diff --git a/make/data/jdwp/jdwp.spec b/make/data/jdwp/jdwp.spec
index 0b7afa76a9c..a33f31ed41c 100644
--- a/make/data/jdwp/jdwp.spec
+++ b/make/data/jdwp/jdwp.spec
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1998, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -869,7 +869,6 @@ JDWP "Java(tm) Debug Wire Protocol"
"section in "
"The Java™ Virtual Machine Specification. "
"Since JDWP version 1.5."
- "
(Out
(referenceType refType "The reference type ID.")
)
@@ -2723,7 +2722,6 @@ JDWP "Java(tm) Debug Wire Protocol"
"
"
"The events that are grouped in a composite event are restricted in the "
"following ways: "
- "
"
"
"
"- Only with other thread start events for the same thread:"
"
"
diff --git a/make/jdk/src/classes/build/tools/jdwpgen/AbstractCommandNode.java b/make/jdk/src/classes/build/tools/jdwpgen/AbstractCommandNode.java
index b4b17196088..d007c584b69 100644
--- a/make/jdk/src/classes/build/tools/jdwpgen/AbstractCommandNode.java
+++ b/make/jdk/src/classes/build/tools/jdwpgen/AbstractCommandNode.java
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -30,8 +30,8 @@ import java.io.*;
class AbstractCommandNode extends AbstractNamedNode {
void document(PrintWriter writer) {
- writer.println("");
+ writer.println("" + name +
+ " Command (" + nameNode.value() + ")
");
writer.println(comment());
writer.println("");
for (Node node : components) {
diff --git a/make/jdk/src/classes/build/tools/jdwpgen/AbstractNamedNode.java b/make/jdk/src/classes/build/tools/jdwpgen/AbstractNamedNode.java
index a71b8949e3d..764558be1a7 100644
--- a/make/jdk/src/classes/build/tools/jdwpgen/AbstractNamedNode.java
+++ b/make/jdk/src/classes/build/tools/jdwpgen/AbstractNamedNode.java
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -62,8 +62,8 @@ abstract class AbstractNamedNode extends Node {
}
void document(PrintWriter writer) {
- writer.println("");
+ writer.println("" + name +
+ " Command Set
");
for (Node node : components) {
node.document(writer);
}
diff --git a/make/jdk/src/classes/build/tools/jdwpgen/AbstractTypeListNode.java b/make/jdk/src/classes/build/tools/jdwpgen/AbstractTypeListNode.java
index eea9b9314a9..5ceae49b811 100644
--- a/make/jdk/src/classes/build/tools/jdwpgen/AbstractTypeListNode.java
+++ b/make/jdk/src/classes/build/tools/jdwpgen/AbstractTypeListNode.java
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -43,11 +43,11 @@ abstract class AbstractTypeListNode extends AbstractNamedNode {
if (components.isEmpty()) {
writer.println("- (None)");
} else {
- writer.println("
");
+ writer.println("");
for (int i = maxStructIndent; i > 0; --i) {
- writer.print("| ");
+ writer.print(" | ");
}
- writer.println(" | | ");
+ writer.println(" | | ");
writer.println("");
for (Node node : components) {
node.document(writer);
diff --git a/make/jdk/src/classes/build/tools/jdwpgen/CommandSetNode.java b/make/jdk/src/classes/build/tools/jdwpgen/CommandSetNode.java
index 738cf61be5b..440e138ccb9 100644
--- a/make/jdk/src/classes/build/tools/jdwpgen/CommandSetNode.java
+++ b/make/jdk/src/classes/build/tools/jdwpgen/CommandSetNode.java
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -38,8 +38,8 @@ class CommandSetNode extends AbstractNamedNode {
}
void document(PrintWriter writer) {
- writer.println("" + name +
- " Command Set (" +
+ writer.println("" + name +
+ " Command Set (" +
nameNode.value() + ")");
writer.println(comment());
for (Node node : components) {
@@ -51,11 +51,13 @@ class CommandSetNode extends AbstractNamedNode {
writer.print("- ");
writer.println(name() + " Command Set (" +
nameNode.value() + ")");
- writer.println("
");
- for (Node node : components) {
- node.documentIndex(writer);
+ if (components.size() > 0) {
+ writer.println("");
+ for (Node node : components) {
+ node.documentIndex(writer);
+ }
+ writer.println(" ");
}
- writer.println(" ");
}
void genJavaClassSpecifics(PrintWriter writer, int depth) {
diff --git a/make/jdk/src/classes/build/tools/jdwpgen/ConstantSetNode.java b/make/jdk/src/classes/build/tools/jdwpgen/ConstantSetNode.java
index 280136766d4..4990cb2740e 100644
--- a/make/jdk/src/classes/build/tools/jdwpgen/ConstantSetNode.java
+++ b/make/jdk/src/classes/build/tools/jdwpgen/ConstantSetNode.java
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -54,15 +54,15 @@ class ConstantSetNode extends AbstractNamedNode {
}
void document(PrintWriter writer) {
- writer.println("");
+ writer.println("" + name +
+ " Constants");
writer.println(comment());
- writer.println("");
- writer.println(" | | ");
+ writer.println("");
+ writer.println(" | | ");
ConstantNode n;
for (Node node : components) {
n = (ConstantNode)node;
- writer.println("");
+ writer.println("");
n.document(writer);
}
writer.println(" |
");
diff --git a/make/jdk/src/classes/build/tools/jdwpgen/ErrorSetNode.java b/make/jdk/src/classes/build/tools/jdwpgen/ErrorSetNode.java
index 2cfe505a858..50dd0af39d4 100644
--- a/make/jdk/src/classes/build/tools/jdwpgen/ErrorSetNode.java
+++ b/make/jdk/src/classes/build/tools/jdwpgen/ErrorSetNode.java
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -43,7 +43,7 @@ class ErrorSetNode extends AbstractSimpleNode {
if (components.isEmpty()) {
writer.println("- (None)");
} else {
- writer.println("
");
+ writer.println("");
for (Node node : components) {
node.document(writer);
}
diff --git a/make/jdk/src/classes/build/tools/jdwpgen/RootNode.java b/make/jdk/src/classes/build/tools/jdwpgen/RootNode.java
index 2361f335949..da485d66a61 100644
--- a/make/jdk/src/classes/build/tools/jdwpgen/RootNode.java
+++ b/make/jdk/src/classes/build/tools/jdwpgen/RootNode.java
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -41,11 +41,22 @@ class RootNode extends AbstractNamedNode {
void document(PrintWriter writer) {
writer.println("");
- writer.println("" + comment() + "");
- writer.println("");
+ writer.println("");
+ writer.println("");
+ writer.println("");
+ writer.println("" + comment() + "");
+ writer.println("");
+ writer.println("");
+ writer.println("");
+ writer.println("");
for (Node node : components) {
node.documentIndex(writer);
}
+ writer.println(" ");
for (Node node : components) {
node.document(writer);
}
diff --git a/make/test/JtregNativeHotspot.gmk b/make/test/JtregNativeHotspot.gmk
index 40df7d1ee42..511f9022304 100644
--- a/make/test/JtregNativeHotspot.gmk
+++ b/make/test/JtregNativeHotspot.gmk
@@ -44,6 +44,7 @@ $(eval $(call IncludeCustomExtension, test/JtregNativeHotspot.gmk))
# Add more directories here when needed.
BUILD_HOTSPOT_JTREG_NATIVE_SRC += \
$(TOPDIR)/test/hotspot/jtreg/gc/g1/TestJNIWeakG1 \
+ $(TOPDIR)/test/hotspot/jtreg/gc/stress/TestJNIBlockFullGC \
$(TOPDIR)/test/hotspot/jtreg/gc/stress/gclocker \
$(TOPDIR)/test/hotspot/jtreg/gc/cslocker \
$(TOPDIR)/test/hotspot/jtreg/native_sanity \
diff --git a/src/hotspot/cpu/aarch64/assembler_aarch64.hpp b/src/hotspot/cpu/aarch64/assembler_aarch64.hpp
index a92e19ab8c6..23d0c691ce1 100644
--- a/src/hotspot/cpu/aarch64/assembler_aarch64.hpp
+++ b/src/hotspot/cpu/aarch64/assembler_aarch64.hpp
@@ -2295,23 +2295,32 @@ public:
rf(Vn, 5), rf(Rd, 0);
}
-#define INSN(NAME, opc, opc2) \
+#define INSN(NAME, opc, opc2, isSHR) \
void NAME(FloatRegister Vd, SIMD_Arrangement T, FloatRegister Vn, int shift){ \
starti; \
- /* The encodings for the immh:immb fields (bits 22:16) are \
- * 0001 xxx 8B/16B, shift = xxx \
- * 001x xxx 4H/8H, shift = xxxx \
- * 01xx xxx 2S/4S, shift = xxxxx \
- * 1xxx xxx 1D/2D, shift = xxxxxx (1D is RESERVED) \
+ /* The encodings for the immh:immb fields (bits 22:16) in *SHR are \
+ * 0001 xxx 8B/16B, shift = 16 - UInt(immh:immb) \
+ * 001x xxx 4H/8H, shift = 32 - UInt(immh:immb) \
+ * 01xx xxx 2S/4S, shift = 64 - UInt(immh:immb) \
+ * 1xxx xxx 1D/2D, shift = 128 - UInt(immh:immb) \
+ * (1D is RESERVED) \
+ * for SHL shift is calculated as: \
+ * 0001 xxx 8B/16B, shift = UInt(immh:immb) - 8 \
+ * 001x xxx 4H/8H, shift = UInt(immh:immb) - 16 \
+ * 01xx xxx 2S/4S, shift = UInt(immh:immb) - 32 \
+ * 1xxx xxx 1D/2D, shift = UInt(immh:immb) - 64 \
+ * (1D is RESERVED) \
*/ \
assert((1 << ((T>>1)+3)) > shift, "Invalid Shift value"); \
+ int cVal = (1 << (((T >> 1) + 3) + (isSHR ? 1 : 0))); \
+ int encodedShift = isSHR ? cVal - shift : cVal + shift; \
f(0, 31), f(T & 1, 30), f(opc, 29), f(0b011110, 28, 23), \
- f((1 << ((T>>1)+3))|shift, 22, 16); f(opc2, 15, 10), rf(Vn, 5), rf(Vd, 0); \
+ f(encodedShift, 22, 16); f(opc2, 15, 10), rf(Vn, 5), rf(Vd, 0); \
}
- INSN(shl, 0, 0b010101);
- INSN(sshr, 0, 0b000001);
- INSN(ushr, 1, 0b000001);
+ INSN(shl, 0, 0b010101, /* isSHR = */ false);
+ INSN(sshr, 0, 0b000001, /* isSHR = */ true);
+ INSN(ushr, 1, 0b000001, /* isSHR = */ true);
#undef INSN
diff --git a/src/hotspot/cpu/arm/templateTable_arm.cpp b/src/hotspot/cpu/arm/templateTable_arm.cpp
index b7195674fb7..3b35418b01a 100644
--- a/src/hotspot/cpu/arm/templateTable_arm.cpp
+++ b/src/hotspot/cpu/arm/templateTable_arm.cpp
@@ -4335,7 +4335,6 @@ void TemplateTable::_new() {
Label done;
Label initialize_header;
Label initialize_object; // including clearing the fields
- Label allocate_shared;
const bool allow_shared_alloc =
Universe::heap()->supports_inline_contig_alloc();
@@ -4380,13 +4379,19 @@ void TemplateTable::_new() {
// Klass::_lh_instance_slow_path_bit is really a bit mask, not bit number
__ tbnz(Rsize, exact_log2(Klass::_lh_instance_slow_path_bit), slow_case);
+ // Allocate the instance:
+ // If TLAB is enabled:
+ // Try to allocate in the TLAB.
+ // If fails, go to the slow path.
+ // Else If inline contiguous allocations are enabled:
+ // Try to allocate in eden.
+ // If fails due to heap end, go to slow path.
//
- // Allocate the instance
- // 1) Try to allocate in the TLAB
- // 2) if fail and the object is large allocate in the shared Eden
- // 3) if the above fails (or is not applicable), go to a slow case
- // (creates a new TLAB, etc.)
-
+ // If TLAB is enabled OR inline contiguous is enabled:
+ // Initialize the allocation.
+ // Exit.
+ //
+ // Go to slow path.
if (UseTLAB) {
const Register Rtlab_top = R1_tmp;
const Register Rtlab_end = R2_tmp;
@@ -4396,7 +4401,7 @@ void TemplateTable::_new() {
__ ldr(Rtlab_end, Address(Rthread, in_bytes(JavaThread::tlab_end_offset())));
__ add(Rtlab_top, Robj, Rsize);
__ cmp(Rtlab_top, Rtlab_end);
- __ b(allow_shared_alloc ? allocate_shared : slow_case, hi);
+ __ b(slow_case, hi);
__ str(Rtlab_top, Address(Rthread, JavaThread::tlab_top_offset()));
if (ZeroTLAB) {
// the fields have been already cleared
@@ -4405,45 +4410,43 @@ void TemplateTable::_new() {
// initialize both the header and fields
__ b(initialize_object);
}
- }
+ } else {
+ // Allocation in the shared Eden, if allowed.
+ if (allow_shared_alloc) {
+ const Register Rheap_top_addr = R2_tmp;
+ const Register Rheap_top = R5_tmp;
+ const Register Rheap_end = Rtemp;
+ assert_different_registers(Robj, Rklass, Rsize, Rheap_top_addr, Rheap_top, Rheap_end, LR);
- // Allocation in the shared Eden, if allowed.
- if (allow_shared_alloc) {
- __ bind(allocate_shared);
+ // heap_end now (re)loaded in the loop since also used as a scratch register in the CAS
+ __ ldr_literal(Rheap_top_addr, Lheap_top_addr);
- const Register Rheap_top_addr = R2_tmp;
- const Register Rheap_top = R5_tmp;
- const Register Rheap_end = Rtemp;
- assert_different_registers(Robj, Rklass, Rsize, Rheap_top_addr, Rheap_top, Rheap_end, LR);
-
- // heap_end now (re)loaded in the loop since also used as a scratch register in the CAS
- __ ldr_literal(Rheap_top_addr, Lheap_top_addr);
-
- Label retry;
- __ bind(retry);
+ Label retry;
+ __ bind(retry);
#ifdef AARCH64
- __ ldxr(Robj, Rheap_top_addr);
+ __ ldxr(Robj, Rheap_top_addr);
#else
- __ ldr(Robj, Address(Rheap_top_addr));
+ __ ldr(Robj, Address(Rheap_top_addr));
#endif // AARCH64
- __ ldr(Rheap_end, Address(Rheap_top_addr, (intptr_t)Universe::heap()->end_addr()-(intptr_t)Universe::heap()->top_addr()));
- __ add(Rheap_top, Robj, Rsize);
- __ cmp(Rheap_top, Rheap_end);
- __ b(slow_case, hi);
+ __ ldr(Rheap_end, Address(Rheap_top_addr, (intptr_t)Universe::heap()->end_addr()-(intptr_t)Universe::heap()->top_addr()));
+ __ add(Rheap_top, Robj, Rsize);
+ __ cmp(Rheap_top, Rheap_end);
+ __ b(slow_case, hi);
- // Update heap top atomically.
- // If someone beats us on the allocation, try again, otherwise continue.
+ // Update heap top atomically.
+ // If someone beats us on the allocation, try again, otherwise continue.
#ifdef AARCH64
- __ stxr(Rtemp2, Rheap_top, Rheap_top_addr);
- __ cbnz_w(Rtemp2, retry);
+ __ stxr(Rtemp2, Rheap_top, Rheap_top_addr);
+ __ cbnz_w(Rtemp2, retry);
#else
- __ atomic_cas_bool(Robj, Rheap_top, Rheap_top_addr, 0, Rheap_end/*scratched*/);
- __ b(retry, ne);
+ __ atomic_cas_bool(Robj, Rheap_top, Rheap_top_addr, 0, Rheap_end/*scratched*/);
+ __ b(retry, ne);
#endif // AARCH64
- __ incr_allocated_bytes(Rsize, Rtemp);
+ __ incr_allocated_bytes(Rsize, Rtemp);
+ }
}
if (UseTLAB || allow_shared_alloc) {
diff --git a/src/hotspot/cpu/ppc/c1_MacroAssembler_ppc.cpp b/src/hotspot/cpu/ppc/c1_MacroAssembler_ppc.cpp
index 875c5dfdfdf..01b910db057 100644
--- a/src/hotspot/cpu/ppc/c1_MacroAssembler_ppc.cpp
+++ b/src/hotspot/cpu/ppc/c1_MacroAssembler_ppc.cpp
@@ -1,6 +1,6 @@
/*
- * Copyright (c) 1999, 2015, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2012, 2015 SAP SE. All rights reserved.
+ * Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2018 SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -34,8 +34,8 @@
#include "runtime/basicLock.hpp"
#include "runtime/biasedLocking.hpp"
#include "runtime/os.hpp"
-#include "runtime/stubRoutines.hpp"
#include "runtime/sharedRuntime.hpp"
+#include "runtime/stubRoutines.hpp"
#include "utilities/align.hpp"
diff --git a/src/hotspot/cpu/ppc/c1_globals_ppc.hpp b/src/hotspot/cpu/ppc/c1_globals_ppc.hpp
index b641852e8a3..66f6f913636 100644
--- a/src/hotspot/cpu/ppc/c1_globals_ppc.hpp
+++ b/src/hotspot/cpu/ppc/c1_globals_ppc.hpp
@@ -1,6 +1,6 @@
/*
- * Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2012, 2015 SAP SE. All rights reserved.
+ * Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2018 SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -33,36 +33,36 @@
// (see c1_globals.hpp)
#ifndef TIERED
-define_pd_global(bool, BackgroundCompilation, true );
-define_pd_global(bool, CICompileOSR, true );
-define_pd_global(bool, InlineIntrinsics, true );
-define_pd_global(bool, PreferInterpreterNativeStubs, false);
-define_pd_global(bool, ProfileTraps, false);
-define_pd_global(bool, UseOnStackReplacement, true );
-define_pd_global(bool, TieredCompilation, false);
-define_pd_global(intx, CompileThreshold, 1000 );
+define_pd_global(bool, BackgroundCompilation, true);
+define_pd_global(bool, CICompileOSR, true);
+define_pd_global(bool, InlineIntrinsics, true);
+define_pd_global(bool, PreferInterpreterNativeStubs, false);
+define_pd_global(bool, ProfileTraps, false);
+define_pd_global(bool, UseOnStackReplacement, true);
+define_pd_global(bool, TieredCompilation, false);
+define_pd_global(intx, CompileThreshold, 1000);
-define_pd_global(intx, OnStackReplacePercentage, 1400 );
-define_pd_global(bool, UseTLAB, true );
-define_pd_global(bool, ProfileInterpreter, false);
-define_pd_global(intx, FreqInlineSize, 325 );
-define_pd_global(bool, ResizeTLAB, true );
-define_pd_global(intx, ReservedCodeCacheSize, 32*M );
-define_pd_global(intx, CodeCacheExpansionSize, 32*K );
-define_pd_global(uintx,CodeCacheMinBlockLength, 1);
-define_pd_global(uintx,MetaspaceSize, 12*M );
-define_pd_global(bool, NeverActAsServerClassMachine, true );
-define_pd_global(intx, NewSizeThreadIncrease, 16*K );
-define_pd_global(uint64_t,MaxRAM, 1ULL*G);
-define_pd_global(intx, InitialCodeCacheSize, 160*K);
+define_pd_global(intx, OnStackReplacePercentage, 1400);
+define_pd_global(bool, UseTLAB, true);
+define_pd_global(bool, ProfileInterpreter, false);
+define_pd_global(intx, FreqInlineSize, 325 );
+define_pd_global(bool, ResizeTLAB, true);
+define_pd_global(uintx, ReservedCodeCacheSize, 32*M);
+define_pd_global(uintx, CodeCacheExpansionSize, 32*K);
+define_pd_global(uintx, CodeCacheMinBlockLength, 1);
+define_pd_global(size_t, MetaspaceSize, 12*M);
+define_pd_global(bool, NeverActAsServerClassMachine, true);
+define_pd_global(size_t, NewSizeThreadIncrease, 16*K);
+define_pd_global(uint64_t, MaxRAM, 1ULL*G);
+define_pd_global(uintx, InitialCodeCacheSize, 160*K);
#endif // !TIERED
-define_pd_global(bool, UseTypeProfile, false);
-define_pd_global(bool, RoundFPResults, false);
+define_pd_global(bool, UseTypeProfile, false);
+define_pd_global(bool, RoundFPResults, false);
-define_pd_global(bool, LIRFillDelaySlots, false);
-define_pd_global(bool, OptimizeSinglePrecision, false);
-define_pd_global(bool, CSEArrayLength, true );
-define_pd_global(bool, TwoOperandLIRForm, false);
+define_pd_global(bool, LIRFillDelaySlots, false);
+define_pd_global(bool, OptimizeSinglePrecision, false);
+define_pd_global(bool, CSEArrayLength, true);
+define_pd_global(bool, TwoOperandLIRForm, false);
#endif // CPU_PPC_VM_C1_GLOBALS_PPC_HPP
diff --git a/src/hotspot/cpu/ppc/c2_globals_ppc.hpp b/src/hotspot/cpu/ppc/c2_globals_ppc.hpp
index fd61e5ddb56..a947e45febf 100644
--- a/src/hotspot/cpu/ppc/c2_globals_ppc.hpp
+++ b/src/hotspot/cpu/ppc/c2_globals_ppc.hpp
@@ -1,6 +1,6 @@
/*
- * Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2012, 2016 SAP SE. All rights reserved.
+ * Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2018 SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -39,7 +39,7 @@ define_pd_global(bool, PreferInterpreterNativeStubs, false);
define_pd_global(bool, ProfileTraps, true);
define_pd_global(bool, UseOnStackReplacement, true);
define_pd_global(bool, ProfileInterpreter, true);
-define_pd_global(bool, TieredCompilation, true);
+define_pd_global(bool, TieredCompilation, trueInTiered);
define_pd_global(intx, CompileThreshold, 10000);
define_pd_global(intx, OnStackReplacePercentage, 140);
@@ -78,27 +78,27 @@ define_pd_global(bool, SuperWordLoopUnrollAnalysis, false);
// x.f = 0
// loc = x.f
// NullCheck loc
-define_pd_global(bool, OptoScheduling, false);
-define_pd_global(bool, IdealizeClearArrayNode, true);
+define_pd_global(bool, OptoScheduling, false);
+define_pd_global(bool, IdealizeClearArrayNode, true);
-define_pd_global(intx, InitialCodeCacheSize, 2048*K); // Integral multiple of CodeCacheExpansionSize
-define_pd_global(intx, ReservedCodeCacheSize, 256*M);
-define_pd_global(intx, NonProfiledCodeHeapSize, 125*M);
-define_pd_global(intx, ProfiledCodeHeapSize, 126*M);
-define_pd_global(intx, NonNMethodCodeHeapSize, 5*M );
-define_pd_global(intx, CodeCacheExpansionSize, 64*K);
+define_pd_global(uintx, InitialCodeCacheSize, 2048*K); // Integral multiple of CodeCacheExpansionSize
+define_pd_global(uintx, ReservedCodeCacheSize, 256*M);
+define_pd_global(uintx, NonProfiledCodeHeapSize, 125*M);
+define_pd_global(uintx, ProfiledCodeHeapSize, 126*M);
+define_pd_global(uintx, NonNMethodCodeHeapSize, 5*M );
+define_pd_global(uintx, CodeCacheExpansionSize, 64*K);
// Ergonomics related flags
-define_pd_global(uint64_t, MaxRAM, 4ULL*G);
-define_pd_global(uintx, CodeCacheMinBlockLength, 4);
-define_pd_global(uintx, CodeCacheMinimumUseSpace, 400*K);
+define_pd_global(uint64_t, MaxRAM, 128ULL*G);
+define_pd_global(uintx, CodeCacheMinBlockLength, 4);
+define_pd_global(uintx, CodeCacheMinimumUseSpace, 400*K);
-define_pd_global(bool, TrapBasedRangeChecks, true);
+define_pd_global(bool, TrapBasedRangeChecks, true);
// Heap related flags
-define_pd_global(size_t, MetaspaceSize, ScaleForWordSize(16*M));
+define_pd_global(size_t, MetaspaceSize, ScaleForWordSize(16*M));
// Ergonomics related flags
-define_pd_global(bool, NeverActAsServerClassMachine, false);
+define_pd_global(bool, NeverActAsServerClassMachine, false);
#endif // CPU_PPC_VM_C2_GLOBALS_PPC_HPP
diff --git a/src/hotspot/cpu/ppc/c2_init_ppc.cpp b/src/hotspot/cpu/ppc/c2_init_ppc.cpp
index 4df27d43d1b..5326bd01a08 100644
--- a/src/hotspot/cpu/ppc/c2_init_ppc.cpp
+++ b/src/hotspot/cpu/ppc/c2_init_ppc.cpp
@@ -1,6 +1,6 @@
/*
- * Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2012, 2015 SAP SE. All rights reserved.
+ * Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2018 SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -29,11 +29,11 @@
#include "runtime/globals.hpp"
#include "utilities/debug.hpp"
-// processor dependent initialization for ppc
+// Processor dependent initialization of C2 compiler for ppc.
void Compile::pd_compiler2_init() {
- // Power7 and later
+ // Power7 and later.
if (PowerArchitecturePPC64 > 6) {
if (FLAG_IS_DEFAULT(UsePopCountInstruction)) {
FLAG_SET_ERGO(bool, UsePopCountInstruction, true);
diff --git a/src/hotspot/cpu/ppc/globals_ppc.hpp b/src/hotspot/cpu/ppc/globals_ppc.hpp
index 1e1fbb6f6f3..6d96ad05ee4 100644
--- a/src/hotspot/cpu/ppc/globals_ppc.hpp
+++ b/src/hotspot/cpu/ppc/globals_ppc.hpp
@@ -1,6 +1,6 @@
/*
- * Copyright (c) 2002, 2017, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2012, 2017 SAP SE. All rights reserved.
+ * Copyright (c) 2002, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2018 SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -86,14 +86,14 @@ define_pd_global(intx, InitArrayShortSize, 9*BytesPerLong);
define_pd_global(bool, ThreadLocalHandshakes, true);
// Platform dependent flag handling: flags only defined on this platform.
-#define ARCH_FLAGS(develop, \
- product, \
- diagnostic, \
+#define ARCH_FLAGS(develop, \
+ product, \
+ diagnostic, \
experimental, \
- notproduct, \
- range, \
- constraint, \
- writeable) \
+ notproduct, \
+ range, \
+ constraint, \
+ writeable) \
\
product(uintx, PowerArchitecturePPC64, 0, \
"CPU Version: x for PowerX. Currently recognizes Power5 to " \
diff --git a/src/hotspot/cpu/ppc/icache_ppc.cpp b/src/hotspot/cpu/ppc/icache_ppc.cpp
index 916d3d72590..6901efc37b7 100644
--- a/src/hotspot/cpu/ppc/icache_ppc.cpp
+++ b/src/hotspot/cpu/ppc/icache_ppc.cpp
@@ -1,6 +1,6 @@
/*
- * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2012, 2013 SAP SE. All rights reserved.
+ * Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2018 SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -24,7 +24,6 @@
*/
#include "precompiled.hpp"
-#include "assembler_ppc.inline.hpp"
#include "runtime/icache.hpp"
// Use inline assembler to implement icache flush.
@@ -32,7 +31,7 @@ int ICache::ppc64_flush_icache(address start, int lines, int magic) {
address end = start + (unsigned int)lines*ICache::line_size;
assert(start <= end, "flush_icache parms");
- // store modified cache lines from data cache
+ // Store modified cache lines from data cache.
for (address a = start; a < end; a += ICache::line_size) {
__asm__ __volatile__(
"dcbst 0, %0 \n"
@@ -48,7 +47,7 @@ int ICache::ppc64_flush_icache(address start, int lines, int magic) {
:
: "memory");
- // invalidate respective cache lines in instruction cache
+ // Invalidate respective cache lines in instruction cache.
for (address a = start; a < end; a += ICache::line_size) {
__asm__ __volatile__(
"icbi 0, %0 \n"
@@ -57,7 +56,7 @@ int ICache::ppc64_flush_icache(address start, int lines, int magic) {
: "memory");
}
- // discard fetched instructions
+ // Discard fetched instructions.
__asm__ __volatile__(
"isync \n"
:
@@ -71,6 +70,8 @@ void ICacheStubGenerator::generate_icache_flush(ICache::flush_icache_stub_t* flu
*flush_icache_stub = (ICache::flush_icache_stub_t)ICache::ppc64_flush_icache;
- // First call to flush itself
+ // First call to flush itself.
+ // Pointless since we call C, but it is expected to get
+ // executed during VM_Version::determine_features().
ICache::invalidate_range((address)(*flush_icache_stub), 0);
}
diff --git a/src/hotspot/cpu/ppc/interp_masm_ppc_64.cpp b/src/hotspot/cpu/ppc/interp_masm_ppc_64.cpp
index 742a8ef5a50..18bb92ed6a9 100644
--- a/src/hotspot/cpu/ppc/interp_masm_ppc_64.cpp
+++ b/src/hotspot/cpu/ppc/interp_masm_ppc_64.cpp
@@ -1,6 +1,6 @@
/*
- * Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2012, 2017 SAP SE. All rights reserved.
+ * Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2018 SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -32,6 +32,10 @@
#include "runtime/safepointMechanism.hpp"
#include "runtime/sharedRuntime.hpp"
+// Implementation of InterpreterMacroAssembler.
+
+// This file specializes the assembler with interpreter-specific macros.
+
#ifdef PRODUCT
#define BLOCK_COMMENT(str) // nothing
#else
diff --git a/src/hotspot/cpu/ppc/jniFastGetField_ppc.cpp b/src/hotspot/cpu/ppc/jniFastGetField_ppc.cpp
index 8447e1c37d9..e696fa1fef4 100644
--- a/src/hotspot/cpu/ppc/jniFastGetField_ppc.cpp
+++ b/src/hotspot/cpu/ppc/jniFastGetField_ppc.cpp
@@ -1,6 +1,6 @@
/*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2012, 2013 SAP SE. All rights reserved.
+ * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2018 SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -24,7 +24,7 @@
*/
#include "precompiled.hpp"
-#include "assembler_ppc.inline.hpp"
+#include "asm/assembler.inline.hpp"
#include "memory/resourceArea.hpp"
#include "prims/jniFastGetField.hpp"
#include "prims/jvm_misc.hpp"
diff --git a/src/hotspot/cpu/ppc/macroAssembler_ppc.cpp b/src/hotspot/cpu/ppc/macroAssembler_ppc.cpp
index a31707f6f2e..cecb696b079 100644
--- a/src/hotspot/cpu/ppc/macroAssembler_ppc.cpp
+++ b/src/hotspot/cpu/ppc/macroAssembler_ppc.cpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2012, 2017, SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
@@ -2883,10 +2883,6 @@ void MacroAssembler::compiler_fast_lock_object(ConditionRegister flag, Register
//assert(ObjectMonitor::recursions_size_in_bytes() == 8, "unexpected size");
asm_assert_mem8_is_zero(ObjectMonitor::recursions_offset_in_bytes(), temp,
"monitor->_recursions should be 0", -1);
- // Invariant 2: OwnerIsThread shouldn't be 0.
- //assert(ObjectMonitor::OwnerIsThread_size_in_bytes() == 4, "unexpected size");
- //asm_assert_mem4_isnot_zero(ObjectMonitor::OwnerIsThread_offset_in_bytes(), temp,
- // "monitor->OwnerIsThread shouldn't be 0", -1);
# endif
#if INCLUDE_RTM_OPT
diff --git a/src/hotspot/cpu/ppc/nativeInst_ppc.hpp b/src/hotspot/cpu/ppc/nativeInst_ppc.hpp
index 8fbd5b4198c..0d386f4134a 100644
--- a/src/hotspot/cpu/ppc/nativeInst_ppc.hpp
+++ b/src/hotspot/cpu/ppc/nativeInst_ppc.hpp
@@ -1,6 +1,6 @@
/*
- * Copyright (c) 2002, 2015, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2012, 2015 SAP SE. All rights reserved.
+ * Copyright (c) 2002, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2018 SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -26,7 +26,6 @@
#ifndef CPU_PPC_VM_NATIVEINST_PPC_HPP
#define CPU_PPC_VM_NATIVEINST_PPC_HPP
-#include "asm/assembler.hpp"
#include "asm/macroAssembler.hpp"
#include "memory/allocation.hpp"
#include "runtime/icache.hpp"
diff --git a/src/hotspot/cpu/ppc/runtime_ppc.cpp b/src/hotspot/cpu/ppc/runtime_ppc.cpp
index 984eb01f53f..9d96d8d35a6 100644
--- a/src/hotspot/cpu/ppc/runtime_ppc.cpp
+++ b/src/hotspot/cpu/ppc/runtime_ppc.cpp
@@ -1,6 +1,6 @@
/*
- * Copyright (c) 1998, 2016, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2012, 2015 SAP SE. All rights reserved.
+ * Copyright (c) 1998, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2018 SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -25,7 +25,6 @@
#include "precompiled.hpp"
#ifdef COMPILER2
-#include "asm/assembler.inline.hpp"
#include "asm/macroAssembler.inline.hpp"
#include "classfile/systemDictionary.hpp"
#include "code/vmreg.hpp"
diff --git a/src/hotspot/cpu/ppc/sharedRuntime_ppc.cpp b/src/hotspot/cpu/ppc/sharedRuntime_ppc.cpp
index f8eab68e7fd..db6169179b6 100644
--- a/src/hotspot/cpu/ppc/sharedRuntime_ppc.cpp
+++ b/src/hotspot/cpu/ppc/sharedRuntime_ppc.cpp
@@ -1,6 +1,6 @@
/*
- * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2012, 2017 SAP SE. All rights reserved.
+ * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2018 SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -1912,8 +1912,8 @@ nmethod *SharedRuntime::generate_native_wrapper(MacroAssembler *masm,
// - *_slot_offset Indicates offset from SP in number of stack slots.
// - *_offset Indicates offset from SP in bytes.
- int stack_slots = c_calling_convention(out_sig_bt, out_regs, out_regs2, total_c_args) // 1+2)
- + SharedRuntime::out_preserve_stack_slots(); // See c_calling_convention.
+ int stack_slots = c_calling_convention(out_sig_bt, out_regs, out_regs2, total_c_args) + // 1+2)
+ SharedRuntime::out_preserve_stack_slots(); // See c_calling_convention.
// Now the space for the inbound oop handle area.
int total_save_slots = num_java_iarg_registers * VMRegImpl::slots_per_word;
@@ -2044,7 +2044,8 @@ nmethod *SharedRuntime::generate_native_wrapper(MacroAssembler *masm,
OopMap *oop_map = new OopMap(stack_slots * 2, 0 /* arg_slots*/);
if (is_critical_native) {
- check_needs_gc_for_critical_native(masm, stack_slots, total_in_args, oop_handle_slot_offset, oop_maps, in_regs, in_sig_bt, r_temp_1);
+ check_needs_gc_for_critical_native(masm, stack_slots, total_in_args, oop_handle_slot_offset,
+ oop_maps, in_regs, in_sig_bt, r_temp_1);
}
// Move arguments from register/stack to register/stack.
diff --git a/src/hotspot/cpu/ppc/stubGenerator_ppc.cpp b/src/hotspot/cpu/ppc/stubGenerator_ppc.cpp
index 16cb6149f77..7c535a4e20f 100644
--- a/src/hotspot/cpu/ppc/stubGenerator_ppc.cpp
+++ b/src/hotspot/cpu/ppc/stubGenerator_ppc.cpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2012, 2017, SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
@@ -40,6 +40,10 @@
#include "runtime/thread.inline.hpp"
#include "utilities/align.hpp"
+// Declaration and definition of StubGenerator (no .hpp file).
+// For a more detailed description of the stub routine structure
+// see the comment in stubRoutines.hpp.
+
#define __ _masm->
#ifdef PRODUCT
diff --git a/src/hotspot/cpu/ppc/stubRoutines_ppc_64.cpp b/src/hotspot/cpu/ppc/stubRoutines_ppc_64.cpp
index f5591669bcd..a310e7ea682 100644
--- a/src/hotspot/cpu/ppc/stubRoutines_ppc_64.cpp
+++ b/src/hotspot/cpu/ppc/stubRoutines_ppc_64.cpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2002, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2002, 2018, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2012, 2017, SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
@@ -23,6 +23,7 @@
*
*/
+#include "precompiled.hpp"
#include "asm/macroAssembler.inline.hpp"
#include "runtime/stubRoutines.hpp"
diff --git a/src/hotspot/cpu/ppc/templateInterpreterGenerator_ppc.cpp b/src/hotspot/cpu/ppc/templateInterpreterGenerator_ppc.cpp
index 27a1d62a7d9..f68593ab635 100644
--- a/src/hotspot/cpu/ppc/templateInterpreterGenerator_ppc.cpp
+++ b/src/hotspot/cpu/ppc/templateInterpreterGenerator_ppc.cpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2014, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2015, 2017, SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
@@ -582,25 +582,6 @@ address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler(con
return entry;
}
-#if 0
-// Call special ClassCastException constructor taking object to cast
-// and target class as arguments.
-address TemplateInterpreterGenerator::generate_ClassCastException_verbose_handler() {
- address entry = __ pc();
-
- // Expression stack must be empty before entering the VM if an
- // exception happened.
- __ empty_expression_stack();
-
- // Thread will be loaded to R3_ARG1.
- // Target class oop is in register R5_ARG3 by convention!
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_ClassCastException_verbose), R17_tos, R5_ARG3);
- // Above call must not return here since exception pending.
- DEBUG_ONLY(__ should_not_reach_here();)
- return entry;
-}
-#endif
-
address TemplateInterpreterGenerator::generate_ClassCastException_handler() {
address entry = __ pc();
// Expression stack must be empty before entering the VM if an
@@ -1896,7 +1877,6 @@ address TemplateInterpreterGenerator::generate_CRC32_update_entry() {
return NULL;
}
-
/**
* Method entry for static native methods:
* int java.util.zip.CRC32.updateBytes( int crc, byte[] b, int off, int len)
diff --git a/src/hotspot/cpu/s390/bytes_s390.hpp b/src/hotspot/cpu/s390/bytes_s390.hpp
index f01ea07a2e2..3b62a2e02ad 100644
--- a/src/hotspot/cpu/s390/bytes_s390.hpp
+++ b/src/hotspot/cpu/s390/bytes_s390.hpp
@@ -1,6 +1,6 @@
/*
- * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2016 SAP SE. All rights reserved.
+ * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 2018 SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -42,11 +42,6 @@ class Bytes: AllStatic {
//
// In short, it makes no sense on z/Architecture to piecemeal get or put unaligned data.
- // Only swap on little endian machines => suffix `_le'.
- static inline u2 swap_u2_le(u2 x) { return x; }
- static inline u4 swap_u4_le(u4 x) { return x; }
- static inline u8 swap_u8_le(u8 x) { return x; }
-
static inline u2 get_native_u2(address p) { return *(u2*)p; }
static inline u4 get_native_u4(address p) { return *(u4*)p; }
static inline u8 get_native_u8(address p) { return *(u8*)p; }
@@ -55,7 +50,8 @@ class Bytes: AllStatic {
static inline void put_native_u4(address p, u4 x) { *(u4*)p = x; }
static inline void put_native_u8(address p, u8 x) { *(u8*)p = x; }
-#include "bytes_linux_s390.inline.hpp"
+ // The following header contains the implementations of swap_u2, swap_u4, and swap_u8.
+#include OS_CPU_HEADER_INLINE(bytes)
// Efficient reading and writing of unaligned unsigned data in Java byte ordering (i.e. big-endian ordering)
static inline u2 get_Java_u2(address p) { return get_native_u2(p); }
diff --git a/src/hotspot/cpu/s390/c1_globals_s390.hpp b/src/hotspot/cpu/s390/c1_globals_s390.hpp
index fac7d539f33..3869fb85342 100644
--- a/src/hotspot/cpu/s390/c1_globals_s390.hpp
+++ b/src/hotspot/cpu/s390/c1_globals_s390.hpp
@@ -1,6 +1,6 @@
/*
- * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2016 SAP SE. All rights reserved.
+ * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 2018 SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -48,7 +48,7 @@ define_pd_global(bool, UseTLAB, true);
define_pd_global(bool, ProfileInterpreter, false);
define_pd_global(intx, FreqInlineSize, 325);
define_pd_global(bool, ResizeTLAB, true);
-define_pd_global(intx, ReservedCodeCacheSize, 32*M);
+define_pd_global(uintx, ReservedCodeCacheSize, 32*M);
define_pd_global(uintx, NonProfiledCodeHeapSize, 13*M);
define_pd_global(uintx, ProfiledCodeHeapSize, 14*M);
define_pd_global(uintx, NonNMethodCodeHeapSize, 5*M);
diff --git a/src/hotspot/cpu/s390/c2_globals_s390.hpp b/src/hotspot/cpu/s390/c2_globals_s390.hpp
index 86a1d102e21..7d944b9481b 100644
--- a/src/hotspot/cpu/s390/c2_globals_s390.hpp
+++ b/src/hotspot/cpu/s390/c2_globals_s390.hpp
@@ -1,6 +1,6 @@
/*
- * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2016 SAP SE. All rights reserved.
+ * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 2018 SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -58,7 +58,7 @@ define_pd_global(intx, LoopUnrollLimit, 60);
define_pd_global(intx, LoopPercentProfileLimit, 10);
define_pd_global(intx, MinJumpTableSize, 18);
-// Peephole and CISC spilling both break the graph, and so makes the
+// Peephole and CISC spilling both break the graph, and so make the
// scheduler sick.
define_pd_global(bool, OptoPeephole, false);
define_pd_global(bool, UseCISCSpill, true);
diff --git a/src/hotspot/cpu/s390/globals_s390.hpp b/src/hotspot/cpu/s390/globals_s390.hpp
index a277d468ae5..2354e5ab045 100644
--- a/src/hotspot/cpu/s390/globals_s390.hpp
+++ b/src/hotspot/cpu/s390/globals_s390.hpp
@@ -1,6 +1,6 @@
/*
* Copyright (c) 2016, 2017 Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2016, 2017 SAP SE. All rights reserved.
+ * Copyright (c) 2016, 2018 SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -87,7 +87,14 @@ define_pd_global(intx, InitArrayShortSize, 1*BytesPerLong);
define_pd_global(bool, ThreadLocalHandshakes, true);
-#define ARCH_FLAGS(develop, product, diagnostic, experimental, notproduct, range, constraint, writeable) \
+#define ARCH_FLAGS(develop, \
+ product, \
+ diagnostic, \
+ experimental, \
+ notproduct, \
+ range, \
+ constraint, \
+ writeable) \
\
/* Reoptimize code-sequences of calls at runtime, e.g. replace an */ \
/* indirect call by a direct call. */ \
diff --git a/src/hotspot/os/aix/os_aix.cpp b/src/hotspot/os/aix/os_aix.cpp
index 0325824e021..b0a5435e3e7 100644
--- a/src/hotspot/os/aix/os_aix.cpp
+++ b/src/hotspot/os/aix/os_aix.cpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2012, 2017 SAP SE. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
@@ -1723,7 +1723,7 @@ void os::signal_notify(int sig) {
local_sem_post();
}
-static int check_pending_signals(bool wait) {
+static int check_pending_signals() {
Atomic::store(0, &sigint_count);
for (;;) {
for (int i = 0; i < NSIG + 1; i++) {
@@ -1732,9 +1732,6 @@ static int check_pending_signals(bool wait) {
return i;
}
}
- if (!wait) {
- return -1;
- }
JavaThread *thread = JavaThread::current();
ThreadBlockInVM tbivm(thread);
@@ -1763,12 +1760,8 @@ static int check_pending_signals(bool wait) {
}
}
-int os::signal_lookup() {
- return check_pending_signals(false);
-}
-
int os::signal_wait() {
- return check_pending_signals(true);
+ return check_pending_signals();
}
////////////////////////////////////////////////////////////////////////////////
diff --git a/src/hotspot/os/bsd/os_bsd.cpp b/src/hotspot/os/bsd/os_bsd.cpp
index 64afc14318c..b04d402f14f 100644
--- a/src/hotspot/os/bsd/os_bsd.cpp
+++ b/src/hotspot/os/bsd/os_bsd.cpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -52,13 +52,13 @@
#include "runtime/orderAccess.inline.hpp"
#include "runtime/osThread.hpp"
#include "runtime/perfMemory.hpp"
+#include "runtime/semaphore.hpp"
#include "runtime/sharedRuntime.hpp"
#include "runtime/statSampler.hpp"
#include "runtime/stubRoutines.hpp"
#include "runtime/thread.inline.hpp"
#include "runtime/threadCritical.hpp"
#include "runtime/timer.hpp"
-#include "semaphore_bsd.hpp"
#include "services/attachListener.hpp"
#include "services/memTracker.hpp"
#include "services/runtimeService.hpp"
@@ -91,7 +91,6 @@
# include
# include
# include
-# include
# include
# include
# include
@@ -1829,135 +1828,28 @@ int os::sigexitnum_pd() {
// a counter for each possible signal value
static volatile jint pending_signals[NSIG+1] = { 0 };
-
-// Bsd(POSIX) specific hand shaking semaphore.
-#ifdef __APPLE__
-typedef semaphore_t os_semaphore_t;
-
- #define SEM_INIT(sem, value) semaphore_create(mach_task_self(), &sem, SYNC_POLICY_FIFO, value)
- #define SEM_WAIT(sem) semaphore_wait(sem)
- #define SEM_POST(sem) semaphore_signal(sem)
- #define SEM_DESTROY(sem) semaphore_destroy(mach_task_self(), sem)
-#else
-typedef sem_t os_semaphore_t;
-
- #define SEM_INIT(sem, value) sem_init(&sem, 0, value)
- #define SEM_WAIT(sem) sem_wait(&sem)
- #define SEM_POST(sem) sem_post(&sem)
- #define SEM_DESTROY(sem) sem_destroy(&sem)
-#endif
-
-#ifdef __APPLE__
-// OS X doesn't support unamed POSIX semaphores, so the implementation in os_posix.cpp can't be used.
-
-static const char* sem_init_strerror(kern_return_t value) {
- switch (value) {
- case KERN_INVALID_ARGUMENT: return "Invalid argument";
- case KERN_RESOURCE_SHORTAGE: return "Resource shortage";
- default: return "Unknown";
- }
-}
-
-OSXSemaphore::OSXSemaphore(uint value) {
- kern_return_t ret = SEM_INIT(_semaphore, value);
-
- guarantee(ret == KERN_SUCCESS, "Failed to create semaphore: %s", sem_init_strerror(ret));
-}
-
-OSXSemaphore::~OSXSemaphore() {
- SEM_DESTROY(_semaphore);
-}
-
-void OSXSemaphore::signal(uint count) {
- for (uint i = 0; i < count; i++) {
- kern_return_t ret = SEM_POST(_semaphore);
-
- assert(ret == KERN_SUCCESS, "Failed to signal semaphore");
- }
-}
-
-void OSXSemaphore::wait() {
- kern_return_t ret;
- while ((ret = SEM_WAIT(_semaphore)) == KERN_ABORTED) {
- // Semaphore was interrupted. Retry.
- }
- assert(ret == KERN_SUCCESS, "Failed to wait on semaphore");
-}
-
-jlong OSXSemaphore::currenttime() {
- struct timeval tv;
- gettimeofday(&tv, NULL);
- return (tv.tv_sec * NANOSECS_PER_SEC) + (tv.tv_usec * 1000);
-}
-
-bool OSXSemaphore::trywait() {
- return timedwait(0, 0);
-}
-
-bool OSXSemaphore::timedwait(unsigned int sec, int nsec) {
- kern_return_t kr = KERN_ABORTED;
- mach_timespec_t waitspec;
- waitspec.tv_sec = sec;
- waitspec.tv_nsec = nsec;
-
- jlong starttime = currenttime();
-
- kr = semaphore_timedwait(_semaphore, waitspec);
- while (kr == KERN_ABORTED) {
- jlong totalwait = (sec * NANOSECS_PER_SEC) + nsec;
-
- jlong current = currenttime();
- jlong passedtime = current - starttime;
-
- if (passedtime >= totalwait) {
- waitspec.tv_sec = 0;
- waitspec.tv_nsec = 0;
- } else {
- jlong waittime = totalwait - (current - starttime);
- waitspec.tv_sec = waittime / NANOSECS_PER_SEC;
- waitspec.tv_nsec = waittime % NANOSECS_PER_SEC;
- }
-
- kr = semaphore_timedwait(_semaphore, waitspec);
- }
-
- return kr == KERN_SUCCESS;
-}
-
-#else
-// Use POSIX implementation of semaphores.
-
-struct timespec PosixSemaphore::create_timespec(unsigned int sec, int nsec) {
- struct timespec ts;
- unpackTime(&ts, false, (sec * NANOSECS_PER_SEC) + nsec);
-
- return ts;
-}
-
-#endif // __APPLE__
-
-static os_semaphore_t sig_sem;
-
-#ifdef __APPLE__
-static OSXSemaphore sr_semaphore;
-#else
-static PosixSemaphore sr_semaphore;
-#endif
+static Semaphore* sig_sem = NULL;
void os::signal_init_pd() {
// Initialize signal structures
::memset((void*)pending_signals, 0, sizeof(pending_signals));
// Initialize signal semaphore
- ::SEM_INIT(sig_sem, 0);
+ sig_sem = new Semaphore();
}
void os::signal_notify(int sig) {
- Atomic::inc(&pending_signals[sig]);
- ::SEM_POST(sig_sem);
+ if (sig_sem != NULL) {
+ Atomic::inc(&pending_signals[sig]);
+ sig_sem->signal();
+ } else {
+ // Signal thread is not created with ReduceSignalUsage and signal_init_pd
+ // initialization isn't called.
+ assert(ReduceSignalUsage, "signal semaphore should be created");
+ }
}
-static int check_pending_signals(bool wait) {
+static int check_pending_signals() {
Atomic::store(0, &sigint_count);
for (;;) {
for (int i = 0; i < NSIG + 1; i++) {
@@ -1966,9 +1858,6 @@ static int check_pending_signals(bool wait) {
return i;
}
}
- if (!wait) {
- return -1;
- }
JavaThread *thread = JavaThread::current();
ThreadBlockInVM tbivm(thread);
@@ -1976,7 +1865,7 @@ static int check_pending_signals(bool wait) {
do {
thread->set_suspend_equivalent();
// cleared by handle_special_suspend_equivalent_condition() or java_suspend_self()
- ::SEM_WAIT(sig_sem);
+ sig_sem->wait();
// were we externally suspended while we were waiting?
threadIsSuspended = thread->handle_special_suspend_equivalent_condition();
@@ -1985,7 +1874,7 @@ static int check_pending_signals(bool wait) {
// another thread suspended us. We don't want to continue running
// while suspended because that would surprise the thread that
// suspended us.
- ::SEM_POST(sig_sem);
+ sig_sem->signal();
thread->java_suspend_self();
}
@@ -1993,12 +1882,8 @@ static int check_pending_signals(bool wait) {
}
}
-int os::signal_lookup() {
- return check_pending_signals(false);
-}
-
int os::signal_wait() {
- return check_pending_signals(true);
+ return check_pending_signals();
}
////////////////////////////////////////////////////////////////////////////////
@@ -2663,6 +2548,12 @@ static void suspend_save_context(OSThread *osthread, siginfo_t* siginfo, ucontex
//
// Currently only ever called on the VMThread or JavaThread
//
+#ifdef __APPLE__
+static OSXSemaphore sr_semaphore;
+#else
+static PosixSemaphore sr_semaphore;
+#endif
+
static void SR_handler(int sig, siginfo_t* siginfo, ucontext_t* context) {
// Save and restore errno to avoid confusing native code with EINTR
// after sigsuspend.
diff --git a/src/hotspot/os/bsd/semaphore_bsd.cpp b/src/hotspot/os/bsd/semaphore_bsd.cpp
new file mode 100644
index 00000000000..fb365911a7f
--- /dev/null
+++ b/src/hotspot/os/bsd/semaphore_bsd.cpp
@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled/precompiled.hpp"
+#include "semaphore_bsd.hpp"
+#include "utilities/debug.hpp"
+
+#include
+
+#ifdef __APPLE__
+// OS X doesn't support unamed POSIX semaphores, so the implementation in os_posix.cpp can't be used.
+
+static const char* sem_init_strerror(kern_return_t value) {
+ switch (value) {
+ case KERN_INVALID_ARGUMENT: return "Invalid argument";
+ case KERN_RESOURCE_SHORTAGE: return "Resource shortage";
+ default: return "Unknown";
+ }
+}
+
+OSXSemaphore::OSXSemaphore(uint value) {
+ kern_return_t ret = semaphore_create(mach_task_self(), &_semaphore, SYNC_POLICY_FIFO, value);
+
+ guarantee(ret == KERN_SUCCESS, "Failed to create semaphore: %s", sem_init_strerror(ret));
+}
+
+OSXSemaphore::~OSXSemaphore() {
+ semaphore_destroy(mach_task_self(), _semaphore);
+}
+
+void OSXSemaphore::signal(uint count) {
+ for (uint i = 0; i < count; i++) {
+ kern_return_t ret = semaphore_signal(_semaphore);
+
+ assert(ret == KERN_SUCCESS, "Failed to signal semaphore");
+ }
+}
+
+void OSXSemaphore::wait() {
+ kern_return_t ret;
+ while ((ret = semaphore_wait(_semaphore)) == KERN_ABORTED) {
+ // Semaphore was interrupted. Retry.
+ }
+ assert(ret == KERN_SUCCESS, "Failed to wait on semaphore");
+}
+
+int64_t OSXSemaphore::currenttime() {
+ struct timeval tv;
+ gettimeofday(&tv, NULL);
+ return (tv.tv_sec * NANOSECS_PER_SEC) + (tv.tv_usec * 1000);
+}
+
+bool OSXSemaphore::trywait() {
+ return timedwait(0, 0);
+}
+
+bool OSXSemaphore::timedwait(unsigned int sec, int nsec) {
+ kern_return_t kr = KERN_ABORTED;
+ mach_timespec_t waitspec;
+ waitspec.tv_sec = sec;
+ waitspec.tv_nsec = nsec;
+
+ int64_t starttime = currenttime();
+
+ kr = semaphore_timedwait(_semaphore, waitspec);
+ while (kr == KERN_ABORTED) {
+ int64_t totalwait = (sec * NANOSECS_PER_SEC) + nsec;
+
+ int64_t current = currenttime();
+ int64_t passedtime = current - starttime;
+
+ if (passedtime >= totalwait) {
+ waitspec.tv_sec = 0;
+ waitspec.tv_nsec = 0;
+ } else {
+ int64_t waittime = totalwait - (current - starttime);
+ waitspec.tv_sec = waittime / NANOSECS_PER_SEC;
+ waitspec.tv_nsec = waittime % NANOSECS_PER_SEC;
+ }
+
+ kr = semaphore_timedwait(_semaphore, waitspec);
+ }
+
+ return kr == KERN_SUCCESS;
+}
+#endif // __APPLE__
diff --git a/src/hotspot/os/bsd/semaphore_bsd.hpp b/src/hotspot/os/bsd/semaphore_bsd.hpp
index 9ee7dbe33ce..901d81eab0b 100644
--- a/src/hotspot/os/bsd/semaphore_bsd.hpp
+++ b/src/hotspot/os/bsd/semaphore_bsd.hpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -53,7 +53,7 @@ class OSXSemaphore : public CHeapObj{
bool timedwait(unsigned int sec, int nsec);
private:
- static jlong currenttime();
+ static int64_t currenttime();
};
typedef OSXSemaphore SemaphoreImpl;
diff --git a/src/hotspot/os/linux/os_linux.cpp b/src/hotspot/os/linux/os_linux.cpp
index a91fac1b9fe..6c64bd21626 100644
--- a/src/hotspot/os/linux/os_linux.cpp
+++ b/src/hotspot/os/linux/os_linux.cpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -95,7 +95,6 @@
# include
# include
# include
-# include
# include
# include
# include
@@ -2479,11 +2478,11 @@ void* os::user_handler() {
return CAST_FROM_FN_PTR(void*, UserHandler);
}
-struct timespec PosixSemaphore::create_timespec(unsigned int sec, int nsec) {
+static struct timespec create_semaphore_timespec(unsigned int sec, int nsec) {
struct timespec ts;
// Semaphore's are always associated with CLOCK_REALTIME
os::Linux::clock_gettime(CLOCK_REALTIME, &ts);
- // see unpackTime for discussion on overflow checking
+ // see os_posix.cpp for discussion on overflow checking
if (sec >= MAX_SECS) {
ts.tv_sec += MAX_SECS;
ts.tv_nsec = 0;
@@ -2535,7 +2534,7 @@ int os::sigexitnum_pd() {
static volatile jint pending_signals[NSIG+1] = { 0 };
// Linux(POSIX) specific hand shaking semaphore.
-static sem_t sig_sem;
+static Semaphore* sig_sem = NULL;
static PosixSemaphore sr_semaphore;
void os::signal_init_pd() {
@@ -2543,15 +2542,21 @@ void os::signal_init_pd() {
::memset((void*)pending_signals, 0, sizeof(pending_signals));
// Initialize signal semaphore
- ::sem_init(&sig_sem, 0, 0);
+ sig_sem = new Semaphore();
}
void os::signal_notify(int sig) {
- Atomic::inc(&pending_signals[sig]);
- ::sem_post(&sig_sem);
+ if (sig_sem != NULL) {
+ Atomic::inc(&pending_signals[sig]);
+ sig_sem->signal();
+ } else {
+ // Signal thread is not created with ReduceSignalUsage and signal_init_pd
+ // initialization isn't called.
+ assert(ReduceSignalUsage, "signal semaphore should be created");
+ }
}
-static int check_pending_signals(bool wait) {
+static int check_pending_signals() {
Atomic::store(0, &sigint_count);
for (;;) {
for (int i = 0; i < NSIG + 1; i++) {
@@ -2560,9 +2565,6 @@ static int check_pending_signals(bool wait) {
return i;
}
}
- if (!wait) {
- return -1;
- }
JavaThread *thread = JavaThread::current();
ThreadBlockInVM tbivm(thread);
@@ -2570,7 +2572,7 @@ static int check_pending_signals(bool wait) {
do {
thread->set_suspend_equivalent();
// cleared by handle_special_suspend_equivalent_condition() or java_suspend_self()
- ::sem_wait(&sig_sem);
+ sig_sem->wait();
// were we externally suspended while we were waiting?
threadIsSuspended = thread->handle_special_suspend_equivalent_condition();
@@ -2579,7 +2581,7 @@ static int check_pending_signals(bool wait) {
// another thread suspended us. We don't want to continue running
// while suspended because that would surprise the thread that
// suspended us.
- ::sem_post(&sig_sem);
+ sig_sem->signal();
thread->java_suspend_self();
}
@@ -2587,12 +2589,8 @@ static int check_pending_signals(bool wait) {
}
}
-int os::signal_lookup() {
- return check_pending_signals(false);
-}
-
int os::signal_wait() {
- return check_pending_signals(true);
+ return check_pending_signals();
}
////////////////////////////////////////////////////////////////////////////////
@@ -4317,7 +4315,7 @@ static bool do_suspend(OSThread* osthread) {
// managed to send the signal and switch to SUSPEND_REQUEST, now wait for SUSPENDED
while (true) {
- if (sr_semaphore.timedwait(0, 2 * NANOSECS_PER_MILLISEC)) {
+ if (sr_semaphore.timedwait(create_semaphore_timespec(0, 2 * NANOSECS_PER_MILLISEC))) {
break;
} else {
// timeout
@@ -4351,7 +4349,7 @@ static void do_resume(OSThread* osthread) {
while (true) {
if (sr_notify(osthread) == 0) {
- if (sr_semaphore.timedwait(0, 2 * NANOSECS_PER_MILLISEC)) {
+ if (sr_semaphore.timedwait(create_semaphore_timespec(0, 2 * NANOSECS_PER_MILLISEC))) {
if (osthread->sr.is_running()) {
return;
}
diff --git a/src/hotspot/os/posix/os_posix.cpp b/src/hotspot/os/posix/os_posix.cpp
index dcee2bd9359..1019b6b1277 100644
--- a/src/hotspot/os/posix/os_posix.cpp
+++ b/src/hotspot/os/posix/os_posix.cpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -31,14 +31,8 @@
#include "utilities/macros.hpp"
#include "utilities/vmError.hpp"
-#ifndef __APPLE__
-// POSIX unamed semaphores are not supported on OS X.
-#include "semaphore_posix.hpp"
-#endif
-
#include
#include
-#include
#include
#include
#include
@@ -1499,67 +1493,6 @@ void os::ThreadCrashProtection::check_crash_protection(int sig,
}
}
-// POSIX unamed semaphores are not supported on OS X.
-#ifndef __APPLE__
-
-PosixSemaphore::PosixSemaphore(uint value) {
- int ret = sem_init(&_semaphore, 0, value);
-
- guarantee_with_errno(ret == 0, "Failed to initialize semaphore");
-}
-
-PosixSemaphore::~PosixSemaphore() {
- sem_destroy(&_semaphore);
-}
-
-void PosixSemaphore::signal(uint count) {
- for (uint i = 0; i < count; i++) {
- int ret = sem_post(&_semaphore);
-
- assert_with_errno(ret == 0, "sem_post failed");
- }
-}
-
-void PosixSemaphore::wait() {
- int ret;
-
- do {
- ret = sem_wait(&_semaphore);
- } while (ret != 0 && errno == EINTR);
-
- assert_with_errno(ret == 0, "sem_wait failed");
-}
-
-bool PosixSemaphore::trywait() {
- int ret;
-
- do {
- ret = sem_trywait(&_semaphore);
- } while (ret != 0 && errno == EINTR);
-
- assert_with_errno(ret == 0 || errno == EAGAIN, "trywait failed");
-
- return ret == 0;
-}
-
-bool PosixSemaphore::timedwait(struct timespec ts) {
- while (true) {
- int result = sem_timedwait(&_semaphore, &ts);
- if (result == 0) {
- return true;
- } else if (errno == EINTR) {
- continue;
- } else if (errno == ETIMEDOUT) {
- return false;
- } else {
- assert_with_errno(false, "timedwait failed");
- return false;
- }
- }
-}
-
-#endif // __APPLE__
-
// Shared pthread_mutex/cond based PlatformEvent implementation.
// Not currently usable by Solaris.
diff --git a/src/hotspot/os/posix/semaphore_posix.cpp b/src/hotspot/os/posix/semaphore_posix.cpp
new file mode 100644
index 00000000000..6e02ea402f6
--- /dev/null
+++ b/src/hotspot/os/posix/semaphore_posix.cpp
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled/precompiled.hpp"
+#ifndef __APPLE__
+#include "runtime/os.hpp"
+// POSIX unamed semaphores are not supported on OS X.
+#include "semaphore_posix.hpp"
+#include
+
+#define check_with_errno(check_type, cond, msg) \
+ do { \
+ int err = errno; \
+ check_type(cond, "%s; error='%s' (errno=%s)", msg, os::strerror(err), \
+ os::errno_name(err)); \
+} while (false)
+
+#define assert_with_errno(cond, msg) check_with_errno(assert, cond, msg)
+#define guarantee_with_errno(cond, msg) check_with_errno(guarantee, cond, msg)
+
+PosixSemaphore::PosixSemaphore(uint value) {
+ int ret = sem_init(&_semaphore, 0, value);
+
+ guarantee_with_errno(ret == 0, "Failed to initialize semaphore");
+}
+
+PosixSemaphore::~PosixSemaphore() {
+ sem_destroy(&_semaphore);
+}
+
+void PosixSemaphore::signal(uint count) {
+ for (uint i = 0; i < count; i++) {
+ int ret = sem_post(&_semaphore);
+
+ assert_with_errno(ret == 0, "sem_post failed");
+ }
+}
+
+void PosixSemaphore::wait() {
+ int ret;
+
+ do {
+ ret = sem_wait(&_semaphore);
+ } while (ret != 0 && errno == EINTR);
+
+ assert_with_errno(ret == 0, "sem_wait failed");
+}
+
+bool PosixSemaphore::trywait() {
+ int ret;
+
+ do {
+ ret = sem_trywait(&_semaphore);
+ } while (ret != 0 && errno == EINTR);
+
+ assert_with_errno(ret == 0 || errno == EAGAIN, "trywait failed");
+
+ return ret == 0;
+}
+
+bool PosixSemaphore::timedwait(struct timespec ts) {
+ while (true) {
+ int result = sem_timedwait(&_semaphore, &ts);
+ if (result == 0) {
+ return true;
+ } else if (errno == EINTR) {
+ continue;
+ } else if (errno == ETIMEDOUT) {
+ return false;
+ } else {
+ assert_with_errno(false, "timedwait failed");
+ return false;
+ }
+ }
+}
+#endif // __APPLE__
+
diff --git a/src/hotspot/os/posix/semaphore_posix.hpp b/src/hotspot/os/posix/semaphore_posix.hpp
index 8d76bf1062e..1fda6741fe0 100644
--- a/src/hotspot/os/posix/semaphore_posix.hpp
+++ b/src/hotspot/os/posix/semaphore_posix.hpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -45,15 +45,7 @@ class PosixSemaphore : public CHeapObj {
void wait();
bool trywait();
- bool timedwait(unsigned int sec, int nsec) {
- return timedwait(create_timespec(sec, nsec));
- }
-
- private:
bool timedwait(struct timespec ts);
-
- // OS specific implementation to create a timespec suitable for semaphores.
- struct timespec create_timespec(unsigned int set, int nsec);
};
typedef PosixSemaphore SemaphoreImpl;
diff --git a/src/hotspot/os/solaris/os_solaris.cpp b/src/hotspot/os/solaris/os_solaris.cpp
index ef7c1deaea4..bb81998b34e 100644
--- a/src/hotspot/os/solaris/os_solaris.cpp
+++ b/src/hotspot/os/solaris/os_solaris.cpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -2062,7 +2062,7 @@ void* os::user_handler() {
return CAST_FROM_FN_PTR(void*, UserHandler);
}
-struct timespec PosixSemaphore::create_timespec(unsigned int sec, int nsec) {
+static struct timespec create_semaphore_timespec(unsigned int sec, int nsec) {
struct timespec ts;
unpackTime(&ts, false, (sec * NANOSECS_PER_SEC) + nsec);
@@ -2100,7 +2100,7 @@ static int Sigexit = 0;
static jint *pending_signals = NULL;
static int *preinstalled_sigs = NULL;
static struct sigaction *chainedsigactions = NULL;
-static sema_t sig_sem;
+static Semaphore* sig_sem = NULL;
typedef int (*version_getting_t)();
version_getting_t os::Solaris::get_libjsig_version = NULL;
@@ -2115,6 +2115,7 @@ void os::Solaris::init_signal_mem() {
Sigexit = Maxsignum+1;
assert(Maxsignum >0, "Unable to obtain max signal number");
+ // Initialize signal structures
// pending_signals has one int per signal
// The additional signal is for SIGEXIT - exit signal to signal_thread
pending_signals = (jint *)os::malloc(sizeof(jint) * (Sigexit+1), mtInternal);
@@ -2132,21 +2133,22 @@ void os::Solaris::init_signal_mem() {
}
void os::signal_init_pd() {
- int ret;
-
- ret = ::sema_init(&sig_sem, 0, NULL, NULL);
- assert(ret == 0, "sema_init() failed");
+ // Initialize signal semaphore
+ sig_sem = new Semaphore();
}
-void os::signal_notify(int signal_number) {
- int ret;
-
- Atomic::inc(&pending_signals[signal_number]);
- ret = ::sema_post(&sig_sem);
- assert(ret == 0, "sema_post() failed");
+void os::signal_notify(int sig) {
+ if (sig_sem != NULL) {
+ Atomic::inc(&pending_signals[sig]);
+ sig_sem->signal();
+ } else {
+ // Signal thread is not created with ReduceSignalUsage and signal_init_pd
+ // initialization isn't called.
+ assert(ReduceSignalUsage, "signal semaphore should be created");
+ }
}
-static int check_pending_signals(bool wait_for_signal) {
+static int check_pending_signals() {
int ret;
while (true) {
for (int i = 0; i < Sigexit + 1; i++) {
@@ -2155,19 +2157,13 @@ static int check_pending_signals(bool wait_for_signal) {
return i;
}
}
- if (!wait_for_signal) {
- return -1;
- }
JavaThread *thread = JavaThread::current();
ThreadBlockInVM tbivm(thread);
bool threadIsSuspended;
do {
thread->set_suspend_equivalent();
- // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self()
- while ((ret = ::sema_wait(&sig_sem)) == EINTR)
- ;
- assert(ret == 0, "sema_wait() failed");
+ sig_sem->wait();
// were we externally suspended while we were waiting?
threadIsSuspended = thread->handle_special_suspend_equivalent_condition();
@@ -2176,8 +2172,7 @@ static int check_pending_signals(bool wait_for_signal) {
// another thread suspended us. We don't want to continue running
// while suspended because that would surprise the thread that
// suspended us.
- ret = ::sema_post(&sig_sem);
- assert(ret == 0, "sema_post() failed");
+ sig_sem->signal();
thread->java_suspend_self();
}
@@ -2185,12 +2180,8 @@ static int check_pending_signals(bool wait_for_signal) {
}
}
-int os::signal_lookup() {
- return check_pending_signals(false);
-}
-
int os::signal_wait() {
- return check_pending_signals(true);
+ return check_pending_signals();
}
////////////////////////////////////////////////////////////////////////////////
@@ -3599,7 +3590,7 @@ static bool do_suspend(OSThread* osthread) {
// managed to send the signal and switch to SUSPEND_REQUEST, now wait for SUSPENDED
while (true) {
- if (sr_semaphore.timedwait(0, 2000 * NANOSECS_PER_MILLISEC)) {
+ if (sr_semaphore.timedwait(create_semaphore_timespec(0, 2000 * NANOSECS_PER_MILLISEC))) {
break;
} else {
// timeout
@@ -3633,7 +3624,7 @@ static void do_resume(OSThread* osthread) {
while (true) {
if (sr_notify(osthread) == 0) {
- if (sr_semaphore.timedwait(0, 2 * NANOSECS_PER_MILLISEC)) {
+ if (sr_semaphore.timedwait(create_semaphore_timespec(0, 2 * NANOSECS_PER_MILLISEC))) {
if (osthread->sr.is_running()) {
return;
}
diff --git a/src/hotspot/os/windows/os_windows.cpp b/src/hotspot/os/windows/os_windows.cpp
index 656a119d4d4..d4202ca878c 100644
--- a/src/hotspot/os/windows/os_windows.cpp
+++ b/src/hotspot/os/windows/os_windows.cpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -62,7 +62,6 @@
#include "runtime/threadCritical.hpp"
#include "runtime/timer.hpp"
#include "runtime/vm_version.hpp"
-#include "semaphore_windows.hpp"
#include "services/attachListener.hpp"
#include "services/memTracker.hpp"
#include "services/runtimeService.hpp"
@@ -1845,36 +1844,6 @@ int os::get_last_error() {
return (int)error;
}
-WindowsSemaphore::WindowsSemaphore(uint value) {
- _semaphore = ::CreateSemaphore(NULL, value, LONG_MAX, NULL);
-
- guarantee(_semaphore != NULL, "CreateSemaphore failed with error code: %lu", GetLastError());
-}
-
-WindowsSemaphore::~WindowsSemaphore() {
- ::CloseHandle(_semaphore);
-}
-
-void WindowsSemaphore::signal(uint count) {
- if (count > 0) {
- BOOL ret = ::ReleaseSemaphore(_semaphore, count, NULL);
-
- assert(ret != 0, "ReleaseSemaphore failed with error code: %lu", GetLastError());
- }
-}
-
-void WindowsSemaphore::wait() {
- DWORD ret = ::WaitForSingleObject(_semaphore, INFINITE);
- assert(ret != WAIT_FAILED, "WaitForSingleObject failed with error code: %lu", GetLastError());
- assert(ret == WAIT_OBJECT_0, "WaitForSingleObject failed with return value: %lu", ret);
-}
-
-bool WindowsSemaphore::trywait() {
- DWORD ret = ::WaitForSingleObject(_semaphore, 0);
- assert(ret != WAIT_FAILED, "WaitForSingleObject failed with error code: %lu", GetLastError());
- return ret == WAIT_OBJECT_0;
-}
-
// sun.misc.Signal
// NOTE that this is a workaround for an apparent kernel bug where if
// a signal handler for SIGBREAK is installed then that signal handler
@@ -1966,13 +1935,14 @@ int os::sigexitnum_pd() {
// a counter for each possible signal value, including signal_thread exit signal
static volatile jint pending_signals[NSIG+1] = { 0 };
-static HANDLE sig_sem = NULL;
+static Semaphore* sig_sem = NULL;
void os::signal_init_pd() {
// Initialize signal structures
memset((void*)pending_signals, 0, sizeof(pending_signals));
- sig_sem = ::CreateSemaphore(NULL, 0, NSIG+1, NULL);
+ // Initialize signal semaphore
+ sig_sem = new Semaphore();
// Programs embedding the VM do not want it to attempt to receive
// events like CTRL_LOGOFF_EVENT, which are used to implement the
@@ -1994,17 +1964,18 @@ void os::signal_init_pd() {
}
}
-void os::signal_notify(int signal_number) {
- BOOL ret;
+void os::signal_notify(int sig) {
if (sig_sem != NULL) {
- Atomic::inc(&pending_signals[signal_number]);
- ret = ::ReleaseSemaphore(sig_sem, 1, NULL);
- assert(ret != 0, "ReleaseSemaphore() failed");
+ Atomic::inc(&pending_signals[sig]);
+ sig_sem->signal();
+ } else {
+ // Signal thread is not created with ReduceSignalUsage and signal_init_pd
+ // initialization isn't called.
+ assert(ReduceSignalUsage, "signal semaphore should be created");
}
}
-static int check_pending_signals(bool wait_for_signal) {
- DWORD ret;
+static int check_pending_signals() {
while (true) {
for (int i = 0; i < NSIG + 1; i++) {
jint n = pending_signals[i];
@@ -2012,10 +1983,6 @@ static int check_pending_signals(bool wait_for_signal) {
return i;
}
}
- if (!wait_for_signal) {
- return -1;
- }
-
JavaThread *thread = JavaThread::current();
ThreadBlockInVM tbivm(thread);
@@ -2024,8 +1991,7 @@ static int check_pending_signals(bool wait_for_signal) {
do {
thread->set_suspend_equivalent();
// cleared by handle_special_suspend_equivalent_condition() or java_suspend_self()
- ret = ::WaitForSingleObject(sig_sem, INFINITE);
- assert(ret == WAIT_OBJECT_0, "WaitForSingleObject() failed");
+ sig_sem->wait();
// were we externally suspended while we were waiting?
threadIsSuspended = thread->handle_special_suspend_equivalent_condition();
@@ -2034,8 +2000,7 @@ static int check_pending_signals(bool wait_for_signal) {
// another thread suspended us. We don't want to continue running
// while suspended because that would surprise the thread that
// suspended us.
- ret = ::ReleaseSemaphore(sig_sem, 1, NULL);
- assert(ret != 0, "ReleaseSemaphore() failed");
+ sig_sem->signal();
thread->java_suspend_self();
}
@@ -2043,12 +2008,8 @@ static int check_pending_signals(bool wait_for_signal) {
}
}
-int os::signal_lookup() {
- return check_pending_signals(false);
-}
-
int os::signal_wait() {
- return check_pending_signals(true);
+ return check_pending_signals();
}
// Implicit OS exception handling
@@ -4394,13 +4355,49 @@ FILE* os::open(int fd, const char* mode) {
// Is a (classpath) directory empty?
bool os::dir_is_empty(const char* path) {
- WIN32_FIND_DATA fd;
- HANDLE f = FindFirstFile(path, &fd);
- if (f == INVALID_HANDLE_VALUE) {
- return true;
+ char* search_path = (char*)os::malloc(strlen(path) + 3, mtInternal);
+ if (search_path == NULL) {
+ errno = ENOMEM;
+ return false;
}
- FindClose(f);
- return false;
+ strcpy(search_path, path);
+ // Append "*", or possibly "\\*", to path
+ if (path[1] == ':' &&
+ (path[2] == '\0' ||
+ (path[2] == '\\' && path[3] == '\0'))) {
+ // No '\\' needed for cases like "Z:" or "Z:\"
+ strcat(search_path, "*");
+ }
+ else {
+ strcat(search_path, "\\*");
+ }
+ errno_t err = ERROR_SUCCESS;
+ wchar_t* wpath = create_unc_path(search_path, err);
+ if (err != ERROR_SUCCESS) {
+ if (wpath != NULL) {
+ destroy_unc_path(wpath);
+ }
+ os::free(search_path);
+ errno = err;
+ return false;
+ }
+ WIN32_FIND_DATAW fd;
+ HANDLE f = ::FindFirstFileW(wpath, &fd);
+ destroy_unc_path(wpath);
+ bool is_empty = true;
+ if (f != INVALID_HANDLE_VALUE) {
+ while (is_empty && ::FindNextFileW(f, &fd)) {
+ // An empty directory contains only the current directory file
+ // and the previous directory file.
+ if ((wcscmp(fd.cFileName, L".") != 0) &&
+ (wcscmp(fd.cFileName, L"..") != 0)) {
+ is_empty = false;
+ }
+ }
+ FindClose(f);
+ }
+ os::free(search_path);
+ return is_empty;
}
// create binary file, rewriting existing file if required
diff --git a/src/hotspot/os/windows/semaphore_windows.cpp b/src/hotspot/os/windows/semaphore_windows.cpp
new file mode 100644
index 00000000000..189184abd7b
--- /dev/null
+++ b/src/hotspot/os/windows/semaphore_windows.cpp
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "semaphore_windows.hpp"
+#include "utilities/debug.hpp"
+
+#include
+#include
+
+WindowsSemaphore::WindowsSemaphore(uint value) {
+ _semaphore = ::CreateSemaphore(NULL, value, LONG_MAX, NULL);
+
+ guarantee(_semaphore != NULL, "CreateSemaphore failed with error code: %lu", GetLastError());
+}
+
+WindowsSemaphore::~WindowsSemaphore() {
+ ::CloseHandle(_semaphore);
+}
+
+void WindowsSemaphore::signal(uint count) {
+ if (count > 0) {
+ BOOL ret = ::ReleaseSemaphore(_semaphore, count, NULL);
+
+ assert(ret != 0, "ReleaseSemaphore failed with error code: %lu", GetLastError());
+ }
+}
+
+void WindowsSemaphore::wait() {
+ DWORD ret = ::WaitForSingleObject(_semaphore, INFINITE);
+ assert(ret != WAIT_FAILED, "WaitForSingleObject failed with error code: %lu", GetLastError());
+ assert(ret == WAIT_OBJECT_0, "WaitForSingleObject failed with return value: %lu", ret);
+}
+
+bool WindowsSemaphore::trywait() {
+ DWORD ret = ::WaitForSingleObject(_semaphore, 0);
+ assert(ret != WAIT_FAILED, "WaitForSingleObject failed with error code: %lu", GetLastError());
+ return ret == WAIT_OBJECT_0;
+}
diff --git a/src/hotspot/share/ci/ciInstanceKlass.cpp b/src/hotspot/share/ci/ciInstanceKlass.cpp
index 088078dd216..3368cc01048 100644
--- a/src/hotspot/share/ci/ciInstanceKlass.cpp
+++ b/src/hotspot/share/ci/ciInstanceKlass.cpp
@@ -34,35 +34,12 @@
#include "oops/oop.inline.hpp"
#include "oops/fieldStreams.hpp"
#include "runtime/fieldDescriptor.hpp"
-#if INCLUDE_ALL_GCS
-# include "gc/g1/g1SATBCardTableModRefBS.hpp"
-#endif
// ciInstanceKlass
//
// This class represents a Klass* in the HotSpot virtual machine
// whose Klass part in an InstanceKlass.
-// ------------------------------------------------------------------
-// ensure_metadata_alive
-//
-// Ensure that the metadata wrapped by the ciMetadata is kept alive by GC.
-// This is primarily useful for metadata which is considered as weak roots
-// by the GC but need to be strong roots if reachable from a current compilation.
-// InstanceKlass are created for both weak and strong metadata. Ensuring this metadata
-// alive covers the cases where there are weak roots without performance cost.
-//
-static void ensure_metadata_alive(oop metadata_holder) {
-#if INCLUDE_ALL_GCS
- if (!UseG1GC) {
- return;
- }
- if (metadata_holder != NULL) {
- G1SATBCardTableModRefBS::enqueue(metadata_holder);
- }
-#endif
-}
-
// ------------------------------------------------------------------
// ciInstanceKlass::ciInstanceKlass
@@ -88,8 +65,12 @@ ciInstanceKlass::ciInstanceKlass(Klass* k) :
_has_injected_fields = -1;
_implementor = NULL; // we will fill these lazily
- oop holder = ik->klass_holder();
- ensure_metadata_alive(holder);
+ // Ensure that the metadata wrapped by the ciMetadata is kept alive by GC.
+ // This is primarily useful for metadata which is considered as weak roots
+ // by the GC but need to be strong roots if reachable from a current compilation.
+ // InstanceKlass are created for both weak and strong metadata. Ensuring this metadata
+ // alive covers the cases where there are weak roots without performance cost.
+ oop holder = ik->klass_holder_phantom();
if (ik->is_anonymous()) {
// Though ciInstanceKlass records class loader oop, it's not enough to keep
// VM anonymous classes alive (loader == NULL). Klass holder should be used instead.
diff --git a/src/hotspot/share/classfile/classLoaderData.cpp b/src/hotspot/share/classfile/classLoaderData.cpp
index fd5c0632143..29801d2033b 100644
--- a/src/hotspot/share/classfile/classLoaderData.cpp
+++ b/src/hotspot/share/classfile/classLoaderData.cpp
@@ -63,6 +63,7 @@
#include "memory/metaspaceShared.hpp"
#include "memory/oopFactory.hpp"
#include "memory/resourceArea.hpp"
+#include "oops/access.inline.hpp"
#include "oops/objArrayOop.inline.hpp"
#include "oops/oop.inline.hpp"
#include "runtime/atomic.hpp"
@@ -75,9 +76,6 @@
#include "utilities/growableArray.hpp"
#include "utilities/macros.hpp"
#include "utilities/ostream.hpp"
-#if INCLUDE_ALL_GCS
-#include "gc/g1/g1SATBCardTableModRefBS.hpp"
-#endif // INCLUDE_ALL_GCS
#if INCLUDE_TRACE
#include "trace/tracing.hpp"
#endif
@@ -759,18 +757,9 @@ void ClassLoaderData::remove_handle(OopHandle h) {
oop* ptr = h.ptr_raw();
if (ptr != NULL) {
assert(_handles.contains(ptr), "Got unexpected handle " PTR_FORMAT, p2i(ptr));
-#if INCLUDE_ALL_GCS
- // This barrier is used by G1 to remember the old oop values, so
- // that we don't forget any objects that were live at the snapshot at
- // the beginning.
- if (UseG1GC) {
- oop obj = *ptr;
- if (obj != NULL) {
- G1SATBCardTableModRefBS::enqueue(obj);
- }
- }
-#endif
- *ptr = NULL;
+ // This root is not walked in safepoints, and hence requires an appropriate
+ // decorator that e.g. maintains the SATB invariant in SATB collectors.
+ RootAccess::oop_store(ptr, oop(NULL));
}
}
diff --git a/src/hotspot/share/classfile/classLoaderData.hpp b/src/hotspot/share/classfile/classLoaderData.hpp
index 6437ecfed5d..41b9a3fa32c 100644
--- a/src/hotspot/share/classfile/classLoaderData.hpp
+++ b/src/hotspot/share/classfile/classLoaderData.hpp
@@ -217,6 +217,7 @@ class ClassLoaderData : public CHeapObj {
friend class ClassLoaderDataGraphKlassIteratorAtomic;
friend class ClassLoaderDataGraphKlassIteratorStatic;
friend class ClassLoaderDataGraphMetaspaceIterator;
+ friend class InstanceKlass;
friend class MetaDataFactory;
friend class Method;
diff --git a/src/hotspot/share/classfile/javaClasses.cpp b/src/hotspot/share/classfile/javaClasses.cpp
index a1c7766d9ff..a7d1e39797a 100644
--- a/src/hotspot/share/classfile/javaClasses.cpp
+++ b/src/hotspot/share/classfile/javaClasses.cpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -33,6 +33,8 @@
#include "code/dependencyContext.hpp"
#include "code/pcDesc.hpp"
#include "interpreter/interpreter.hpp"
+#include "logging/log.hpp"
+#include "logging/logStream.hpp"
#include "memory/oopFactory.hpp"
#include "memory/resourceArea.hpp"
#include "memory/universe.inline.hpp"
@@ -104,52 +106,59 @@ InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
}
-static bool find_field(InstanceKlass* ik,
- Symbol* name_symbol, Symbol* signature_symbol,
- fieldDescriptor* fd,
- bool is_static = false, bool allow_super = false) {
- if (allow_super || is_static) {
- return ik->find_field(name_symbol, signature_symbol, is_static, fd) != NULL;
- } else {
- return ik->find_local_field(name_symbol, signature_symbol, fd);
- }
-}
-
// Helpful routine for computing field offsets at run time rather than hardcoding them
-static void
-compute_offset(int &dest_offset,
- Klass* klass, Symbol* name_symbol, Symbol* signature_symbol,
- bool is_static = false, bool allow_super = false) {
+// Finds local fields only, including static fields. Static field offsets are from the
+// beginning of the mirror.
+static void compute_offset(int &dest_offset,
+ InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
+ bool is_static = false) {
fieldDescriptor fd;
- InstanceKlass* ik = InstanceKlass::cast(klass);
- if (!find_field(ik, name_symbol, signature_symbol, &fd, is_static, allow_super)) {
+ if (ik == NULL) {
ResourceMark rm;
- tty->print_cr("Invalid layout of %s at %s", ik->external_name(), name_symbol->as_C_string());
+ log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
+ vm_exit_during_initialization("Invalid layout of preloaded class");
+ }
+
+ if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
+ ResourceMark rm;
+ log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
+ name_symbol->as_C_string(), signature_symbol->as_C_string());
#ifndef PRODUCT
- ik->print();
- tty->print_cr("all fields:");
- for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
- tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
- }
+ // Prints all fields and offsets
+ Log(class) lt;
+ LogStream ls(lt.error());
+ ik->print_on(&ls);
#endif //PRODUCT
vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
}
dest_offset = fd.offset();
}
+// Overloading to pass name as a string.
+static void compute_offset(int& dest_offset, InstanceKlass* ik,
+ const char* name_string, Symbol* signature_symbol,
+ bool is_static = false) {
+ TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
+ if (name == NULL) {
+ ResourceMark rm;
+ log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
+ vm_exit_during_initialization("Invalid layout of preloaded class", ik->external_name());
+ }
+ compute_offset(dest_offset, ik, name, signature_symbol, is_static);
+}
+
// Same as above but for "optional" offsets that might not be present in certain JDK versions
+// Old versions should be cleaned out since Hotspot only supports the current JDK, and this
+// function should be removed.
static void
compute_optional_offset(int& dest_offset,
- Klass* klass, Symbol* name_symbol, Symbol* signature_symbol,
- bool allow_super = false) {
+ InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol) {
fieldDescriptor fd;
- InstanceKlass* ik = InstanceKlass::cast(klass);
- if (find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
+ if (ik->find_local_field(name_symbol, signature_symbol, &fd)) {
dest_offset = fd.offset();
}
}
-
int java_lang_String::value_offset = 0;
int java_lang_String::hash_offset = 0;
int java_lang_String::coder_offset = 0;
@@ -163,10 +172,10 @@ bool java_lang_String::is_instance(oop obj) {
void java_lang_String::compute_offsets() {
assert(!initialized, "offsets should be initialized only once");
- Klass* k = SystemDictionary::String_klass();
+ InstanceKlass* k = SystemDictionary::String_klass();
compute_offset(value_offset, k, vmSymbols::value_name(), vmSymbols::byte_array_signature());
- compute_offset(hash_offset, k, vmSymbols::hash_name(), vmSymbols::int_signature());
- compute_offset(coder_offset, k, vmSymbols::coder_name(), vmSymbols::byte_signature());
+ compute_offset(hash_offset, k, "hash", vmSymbols::int_signature());
+ compute_offset(coder_offset, k, "coder", vmSymbols::byte_signature());
initialized = true;
}
@@ -619,12 +628,12 @@ char* java_lang_String::as_utf8_string(oop java_string, int start, int len, char
bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
assert(java_string->klass() == SystemDictionary::String_klass(),
"must be java_string");
- typeArrayOop value = java_lang_String::value(java_string);
- int length = java_lang_String::length(java_string);
+ typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
+ int length = java_lang_String::length(java_string);
if (length != len) {
return false;
}
- bool is_latin1 = java_lang_String::is_latin1(java_string);
+ bool is_latin1 = java_lang_String::is_latin1(java_string);
if (!is_latin1) {
for (int i = 0; i < len; i++) {
if (value->char_at(i) != chars[i]) {
@@ -646,12 +655,12 @@ bool java_lang_String::equals(oop str1, oop str2) {
"must be java String");
assert(str2->klass() == SystemDictionary::String_klass(),
"must be java String");
- typeArrayOop value1 = java_lang_String::value(str1);
- int length1 = java_lang_String::length(str1);
- bool is_latin1 = java_lang_String::is_latin1(str1);
- typeArrayOop value2 = java_lang_String::value(str2);
- int length2 = java_lang_String::length(str2);
- bool is_latin2 = java_lang_String::is_latin1(str2);
+ typeArrayOop value1 = java_lang_String::value_no_keepalive(str1);
+ int length1 = java_lang_String::length(value1);
+ bool is_latin1 = java_lang_String::is_latin1(str1);
+ typeArrayOop value2 = java_lang_String::value_no_keepalive(str2);
+ int length2 = java_lang_String::length(value2);
+ bool is_latin2 = java_lang_String::is_latin1(str2);
if ((length1 != length2) || (is_latin1 != is_latin2)) {
// Strings of different size or with different
@@ -659,7 +668,7 @@ bool java_lang_String::equals(oop str1, oop str2) {
return false;
}
int blength1 = value1->length();
- for (int i = 0; i < value1->length(); i++) {
+ for (int i = 0; i < blength1; i++) {
if (value1->byte_at(i) != value2->byte_at(i)) {
return false;
}
@@ -669,7 +678,7 @@ bool java_lang_String::equals(oop str1, oop str2) {
void java_lang_String::print(oop java_string, outputStream* st) {
assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string");
- typeArrayOop value = java_lang_String::value(java_string);
+ typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
if (value == NULL) {
// This can happen if, e.g., printing a String
@@ -1161,25 +1170,11 @@ void java_lang_Class::compute_offsets() {
assert(!offsets_computed, "offsets should be initialized only once");
offsets_computed = true;
- Klass* k = SystemDictionary::Class_klass();
- // The classRedefinedCount field is only present starting in 1.5,
- // so don't go fatal.
- compute_optional_offset(classRedefinedCount_offset,
- k, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature());
-
- // Needs to be optional because the old build runs Queens during bootstrapping
- // and jdk8-9 doesn't have coordinated pushes yet.
- compute_optional_offset(_class_loader_offset,
- k, vmSymbols::classLoader_name(),
- vmSymbols::classloader_signature());
-
- compute_offset(_component_mirror_offset,
- k, vmSymbols::componentType_name(),
- vmSymbols::class_signature());
-
- compute_offset(_module_offset,
- k, vmSymbols::module_name(),
- vmSymbols::module_signature());
+ InstanceKlass* k = SystemDictionary::Class_klass();
+ compute_offset(classRedefinedCount_offset, k, "classRedefinedCount", vmSymbols::int_signature());
+ compute_offset(_class_loader_offset, k, "classLoader", vmSymbols::classloader_signature());
+ compute_offset(_component_mirror_offset, k, "componentType", vmSymbols::class_signature());
+ compute_offset(_module_offset, k, "module", vmSymbols::module_signature());
// Init lock is a C union with component_mirror. Only instanceKlass mirrors have
// init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops
@@ -1234,24 +1229,22 @@ int java_lang_Thread::_park_event_offset = 0 ;
void java_lang_Thread::compute_offsets() {
assert(_group_offset == 0, "offsets should be initialized only once");
- Klass* k = SystemDictionary::Thread_klass();
+ InstanceKlass* k = SystemDictionary::Thread_klass();
compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature());
- compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature());
- compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature());
+ compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(),
+ vmSymbols::classloader_signature());
+ compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(),
+ vmSymbols::accesscontrolcontext_signature());
compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature());
compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
- compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature());
- compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature());
- // The stackSize field is only present starting in 1.4, so don't go fatal.
- compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature());
- // The tid and thread_status fields are only present starting in 1.5, so don't go fatal.
- compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature());
- compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature());
- // The parkBlocker field is only present starting in 1.6, so don't go fatal.
- compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature());
- compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(),
- vmSymbols::long_signature());
+ compute_offset(_eetop_offset, k, "eetop", vmSymbols::long_signature());
+ compute_offset(_stillborn_offset, k, "stillborn", vmSymbols::bool_signature());
+ compute_offset(_stackSize_offset, k, "stackSize", vmSymbols::long_signature());
+ compute_offset(_tid_offset, k, "tid", vmSymbols::long_signature());
+ compute_offset(_thread_status_offset, k, "threadStatus", vmSymbols::int_signature());
+ compute_offset(_park_blocker_offset, k, "parkBlocker", vmSymbols::object_signature());
+ compute_offset(_park_event_offset, k, "nativeParkEventPointer", vmSymbols::long_signature());
}
@@ -1486,7 +1479,7 @@ bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
void java_lang_ThreadGroup::compute_offsets() {
assert(_parent_offset == 0, "offsets should be initialized only once");
- Klass* k = SystemDictionary::ThreadGroup_klass();
+ InstanceKlass* k = SystemDictionary::ThreadGroup_klass();
compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature());
compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
@@ -1501,8 +1494,13 @@ void java_lang_ThreadGroup::compute_offsets() {
void java_lang_Throwable::compute_offsets() {
- Klass* k = SystemDictionary::Throwable_klass();
- compute_offset(depth_offset, k, vmSymbols::depth_name(), vmSymbols::int_signature());
+ InstanceKlass* k = SystemDictionary::Throwable_klass();
+ compute_offset(backtrace_offset, k, "backtrace", vmSymbols::object_signature());
+ compute_offset(detailMessage_offset, k, "detailMessage", vmSymbols::string_signature());
+ compute_offset(stackTrace_offset, k, "stackTrace", vmSymbols::java_lang_StackTraceElement_array());
+ compute_offset(depth_offset, k, "depth", vmSymbols::int_signature());
+ compute_offset(static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", vmSymbols::java_lang_StackTraceElement_array(),
+ /*is_static*/true);
}
oop java_lang_Throwable::unassigned_stacktrace() {
@@ -2270,23 +2268,23 @@ void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle
}
void java_lang_StackFrameInfo::compute_offsets() {
- Klass* k = SystemDictionary::StackFrameInfo_klass();
- compute_offset(_memberName_offset, k, vmSymbols::memberName_name(), vmSymbols::object_signature());
- compute_offset(_bci_offset, k, vmSymbols::bci_name(), vmSymbols::short_signature());
+ InstanceKlass* k = SystemDictionary::StackFrameInfo_klass();
+ compute_offset(_memberName_offset, k, "memberName", vmSymbols::object_signature());
+ compute_offset(_bci_offset, k, "bci", vmSymbols::short_signature());
STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
}
void java_lang_LiveStackFrameInfo::compute_offsets() {
- Klass* k = SystemDictionary::LiveStackFrameInfo_klass();
- compute_offset(_monitors_offset, k, vmSymbols::monitors_name(), vmSymbols::object_array_signature());
- compute_offset(_locals_offset, k, vmSymbols::locals_name(), vmSymbols::object_array_signature());
- compute_offset(_operands_offset, k, vmSymbols::operands_name(), vmSymbols::object_array_signature());
- compute_offset(_mode_offset, k, vmSymbols::mode_name(), vmSymbols::int_signature());
+ InstanceKlass* k = SystemDictionary::LiveStackFrameInfo_klass();
+ compute_offset(_monitors_offset, k, "monitors", vmSymbols::object_array_signature());
+ compute_offset(_locals_offset, k, "locals", vmSymbols::object_array_signature());
+ compute_offset(_operands_offset, k, "operands", vmSymbols::object_array_signature());
+ compute_offset(_mode_offset, k, "mode", vmSymbols::int_signature());
}
void java_lang_reflect_AccessibleObject::compute_offsets() {
- Klass* k = SystemDictionary::reflect_AccessibleObject_klass();
- compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
+ InstanceKlass* k = SystemDictionary::reflect_AccessibleObject_klass();
+ compute_offset(override_offset, k, "override", vmSymbols::bool_signature());
}
jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
@@ -2300,7 +2298,7 @@ void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean valu
}
void java_lang_reflect_Method::compute_offsets() {
- Klass* k = SystemDictionary::reflect_Method_klass();
+ InstanceKlass* k = SystemDictionary::reflect_Method_klass();
compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature());
@@ -2481,7 +2479,7 @@ void java_lang_reflect_Method::set_type_annotations(oop method, oop value) {
}
void java_lang_reflect_Constructor::compute_offsets() {
- Klass* k = SystemDictionary::reflect_Constructor_klass();
+ InstanceKlass* k = SystemDictionary::reflect_Constructor_klass();
compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
@@ -2623,7 +2621,7 @@ void java_lang_reflect_Constructor::set_type_annotations(oop constructor, oop va
}
void java_lang_reflect_Field::compute_offsets() {
- Klass* k = SystemDictionary::reflect_Field_klass();
+ InstanceKlass* k = SystemDictionary::reflect_Field_klass();
compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature());
@@ -2747,22 +2745,17 @@ void java_lang_reflect_Field::set_type_annotations(oop field, oop value) {
}
void reflect_ConstantPool::compute_offsets() {
- Klass* k = SystemDictionary::reflect_ConstantPool_klass();
- // This null test can be removed post beta
- if (k != NULL) {
- // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
- compute_offset(_oop_offset, k, vmSymbols::ConstantPool_name(), vmSymbols::object_signature());
- }
+ InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
+ // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
+ compute_offset(_oop_offset, k, "constantPoolOop", vmSymbols::object_signature());
}
void java_lang_reflect_Parameter::compute_offsets() {
- Klass* k = SystemDictionary::reflect_Parameter_klass();
- if(NULL != k) {
- compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
- compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
- compute_offset(index_offset, k, vmSymbols::index_name(), vmSymbols::int_signature());
- compute_offset(executable_offset, k, vmSymbols::executable_name(), vmSymbols::executable_signature());
- }
+ InstanceKlass* k = SystemDictionary::reflect_Parameter_klass();
+ compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
+ compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
+ compute_offset(index_offset, k, vmSymbols::index_name(), vmSymbols::int_signature());
+ compute_offset(executable_offset, k, vmSymbols::executable_name(), vmSymbols::executable_signature());
}
Handle java_lang_reflect_Parameter::create(TRAPS) {
@@ -2836,12 +2829,10 @@ Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
}
void java_lang_Module::compute_offsets() {
- Klass* k = SystemDictionary::Module_klass();
- if(NULL != k) {
- compute_offset(loader_offset, k, vmSymbols::loader_name(), vmSymbols::classloader_signature());
- compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
- MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
- }
+ InstanceKlass* k = SystemDictionary::Module_klass();
+ compute_offset(loader_offset, k, vmSymbols::loader_name(), vmSymbols::classloader_signature());
+ compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
+ MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
}
@@ -2921,12 +2912,8 @@ ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
}
void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
- Klass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
- // This null test can be removed post beta
- if (k != NULL) {
- compute_offset(_base_offset, k,
- vmSymbols::base_name(), vmSymbols::object_signature());
- }
+ InstanceKlass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
+ compute_offset(_base_offset, k, "base", vmSymbols::object_signature());
}
oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
@@ -3084,6 +3071,13 @@ bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
}
// Support for java_lang_ref_SoftReference
+//
+
+void java_lang_ref_SoftReference::compute_offsets() {
+ InstanceKlass* k = SystemDictionary::SoftReference_klass();
+ compute_offset(timestamp_offset, k, "timestamp", vmSymbols::long_signature());
+ compute_offset(static_clock_offset, k, "clock", vmSymbols::long_signature(), true);
+}
jlong java_lang_ref_SoftReference::timestamp(oop ref) {
return ref->long_field(timestamp_offset);
@@ -3113,10 +3107,8 @@ oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
}
void java_lang_invoke_DirectMethodHandle::compute_offsets() {
- Klass* k = SystemDictionary::DirectMethodHandle_klass();
- if (k != NULL) {
- compute_offset(_member_offset, k, vmSymbols::member_name(), vmSymbols::java_lang_invoke_MemberName_signature());
- }
+ InstanceKlass* k = SystemDictionary::DirectMethodHandle_klass();
+ compute_offset(_member_offset, k, "member", vmSymbols::java_lang_invoke_MemberName_signature());
}
// Support for java_lang_invoke_MethodHandle
@@ -3137,16 +3129,13 @@ int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
int java_lang_invoke_LambdaForm::_vmentry_offset;
void java_lang_invoke_MethodHandle::compute_offsets() {
- Klass* k = SystemDictionary::MethodHandle_klass();
- if (k != NULL) {
- compute_offset(_type_offset, k, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature());
- compute_offset(_form_offset, k, vmSymbols::form_name(), vmSymbols::java_lang_invoke_LambdaForm_signature());
- }
+ InstanceKlass* k = SystemDictionary::MethodHandle_klass();
+ compute_offset(_type_offset, k, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature());
+ compute_offset(_form_offset, k, "form", vmSymbols::java_lang_invoke_LambdaForm_signature());
}
void java_lang_invoke_MemberName::compute_offsets() {
- Klass* k = SystemDictionary::MemberName_klass();
- assert (k != NULL, "jdk mismatch");
+ InstanceKlass* k = SystemDictionary::MemberName_klass();
compute_offset(_clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
compute_offset(_type_offset, k, vmSymbols::type_name(), vmSymbols::object_signature());
@@ -3156,15 +3145,15 @@ void java_lang_invoke_MemberName::compute_offsets() {
}
void java_lang_invoke_ResolvedMethodName::compute_offsets() {
- Klass* k = SystemDictionary::ResolvedMethodName_klass();
+ InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
assert(k != NULL, "jdk mismatch");
RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
}
void java_lang_invoke_LambdaForm::compute_offsets() {
- Klass* k = SystemDictionary::LambdaForm_klass();
+ InstanceKlass* k = SystemDictionary::LambdaForm_klass();
assert (k != NULL, "jdk mismatch");
- compute_offset(_vmentry_offset, k, vmSymbols::vmentry_name(), vmSymbols::java_lang_invoke_MemberName_signature());
+ compute_offset(_vmentry_offset, k, "vmentry", vmSymbols::java_lang_invoke_MemberName_signature());
}
bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
@@ -3305,11 +3294,9 @@ int java_lang_invoke_MethodType::_rtype_offset;
int java_lang_invoke_MethodType::_ptypes_offset;
void java_lang_invoke_MethodType::compute_offsets() {
- Klass* k = SystemDictionary::MethodType_klass();
- if (k != NULL) {
- compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature());
- compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature());
- }
+ InstanceKlass* k = SystemDictionary::MethodType_klass();
+ compute_offset(_rtype_offset, k, "rtype", vmSymbols::class_signature());
+ compute_offset(_ptypes_offset, k, "ptypes", vmSymbols::class_array_signature());
}
void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
@@ -3392,12 +3379,10 @@ int java_lang_invoke_CallSite::_target_offset;
int java_lang_invoke_CallSite::_context_offset;
void java_lang_invoke_CallSite::compute_offsets() {
- Klass* k = SystemDictionary::CallSite_klass();
- if (k != NULL) {
- compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature());
- compute_offset(_context_offset, k, vmSymbols::context_name(),
- vmSymbols::java_lang_invoke_MethodHandleNatives_CallSiteContext_signature());
- }
+ InstanceKlass* k = SystemDictionary::CallSite_klass();
+ compute_offset(_target_offset, k, "target", vmSymbols::java_lang_invoke_MethodHandle_signature());
+ compute_offset(_context_offset, k, "context",
+ vmSymbols::java_lang_invoke_MethodHandleNatives_CallSiteContext_signature());
}
oop java_lang_invoke_CallSite::context(oop call_site) {
@@ -3412,10 +3397,8 @@ oop java_lang_invoke_CallSite::context(oop call_site) {
int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
- Klass* k = SystemDictionary::Context_klass();
- if (k != NULL) {
- CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
- }
+ InstanceKlass* k = SystemDictionary::Context_klass();
+ CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
}
DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
@@ -3434,28 +3417,12 @@ int java_security_AccessControlContext::_isAuthorized_offset = -1;
void java_security_AccessControlContext::compute_offsets() {
assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
- fieldDescriptor fd;
- InstanceKlass* ik = SystemDictionary::AccessControlContext_klass();
+ InstanceKlass* k = SystemDictionary::AccessControlContext_klass();
- if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) {
- fatal("Invalid layout of java.security.AccessControlContext");
- }
- _context_offset = fd.offset();
-
- if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) {
- fatal("Invalid layout of java.security.AccessControlContext");
- }
- _privilegedContext_offset = fd.offset();
-
- if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) {
- fatal("Invalid layout of java.security.AccessControlContext");
- }
- _isPrivileged_offset = fd.offset();
-
- // The offset may not be present for bootstrapping with older JDK.
- if (ik->find_local_field(vmSymbols::isAuthorized_name(), vmSymbols::bool_signature(), &fd)) {
- _isAuthorized_offset = fd.offset();
- }
+ compute_offset(_context_offset, k, "context", vmSymbols::protectiondomain_signature());
+ compute_offset(_privilegedContext_offset, k, "privilegedContext", vmSymbols::accesscontrolcontext_signature());
+ compute_offset(_isPrivileged_offset, k, "isPrivileged", vmSymbols::bool_signature());
+ compute_offset(_isAuthorized_offset, k, "isAuthorized", vmSymbols::bool_signature());
}
@@ -3504,16 +3471,17 @@ void java_lang_ClassLoader::compute_offsets() {
assert(!offsets_computed, "offsets should be initialized only once");
offsets_computed = true;
- // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
- Klass* k1 = SystemDictionary::ClassLoader_klass();
- compute_optional_offset(parallelCapable_offset,
- k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
+ InstanceKlass* k1 = SystemDictionary::ClassLoader_klass();
+ compute_offset(parallelCapable_offset,
+ k1, "parallelLockMap", vmSymbols::concurrenthashmap_signature());
compute_offset(name_offset,
k1, vmSymbols::name_name(), vmSymbols::string_signature());
compute_offset(unnamedModule_offset,
- k1, vmSymbols::unnamedModule_name(), vmSymbols::module_signature());
+ k1, "unnamedModule", vmSymbols::module_signature());
+
+ compute_offset(parent_offset, k1, "parent", vmSymbols::classloader_signature());
CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
}
@@ -3600,19 +3568,18 @@ oop java_lang_ClassLoader::unnamedModule(oop loader) {
}
// Support for java_lang_System
-int java_lang_System::in_offset_in_bytes() {
- return (InstanceMirrorKlass::offset_of_static_fields() + static_in_offset);
+//
+void java_lang_System::compute_offsets() {
+ InstanceKlass* k = SystemDictionary::System_klass();
+ compute_offset(static_in_offset, k, "in", vmSymbols::input_stream_signature(), true);
+ compute_offset(static_out_offset, k, "out", vmSymbols::print_stream_signature(), true);
+ compute_offset(static_err_offset, k, "err", vmSymbols::print_stream_signature(), true);
+ compute_offset(static_security_offset, k, "security", vmSymbols::security_manager_signature(), true);
}
-
-int java_lang_System::out_offset_in_bytes() {
- return (InstanceMirrorKlass::offset_of_static_fields() + static_out_offset);
-}
-
-
-int java_lang_System::err_offset_in_bytes() {
- return (InstanceMirrorKlass::offset_of_static_fields() + static_err_offset);
-}
+int java_lang_System::in_offset_in_bytes() { return static_in_offset; }
+int java_lang_System::out_offset_in_bytes() { return static_out_offset; }
+int java_lang_System::err_offset_in_bytes() { return static_err_offset; }
bool java_lang_System::has_security_manager() {
@@ -3682,7 +3649,6 @@ int java_lang_ref_Reference::referent_offset;
int java_lang_ref_Reference::queue_offset;
int java_lang_ref_Reference::next_offset;
int java_lang_ref_Reference::discovered_offset;
-int java_lang_ref_Reference::number_of_fake_oop_fields;
int java_lang_ref_SoftReference::timestamp_offset;
int java_lang_ref_SoftReference::static_clock_offset;
int java_lang_ClassLoader::parent_offset;
@@ -3717,6 +3683,17 @@ int reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
// Support for java_lang_StackTraceElement
+void java_lang_StackTraceElement::compute_offsets() {
+ InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
+ compute_offset(declaringClassObject_offset, k, "declaringClassObject", vmSymbols::class_signature());
+ compute_offset(classLoaderName_offset, k, "classLoaderName", vmSymbols::string_signature());
+ compute_offset(moduleName_offset, k, "moduleName", vmSymbols::string_signature());
+ compute_offset(moduleVersion_offset, k, "moduleVersion", vmSymbols::string_signature());
+ compute_offset(declaringClass_offset, k, "declaringClass", vmSymbols::string_signature());
+ compute_offset(methodName_offset, k, "methodName", vmSymbols::string_signature());
+ compute_offset(fileName_offset, k, "fileName", vmSymbols::string_signature());
+ compute_offset(lineNumber_offset, k, "lineNumber", vmSymbols::int_signature());
+}
void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
element->obj_field_put(fileName_offset, value);
@@ -3776,6 +3753,16 @@ void java_lang_LiveStackFrameInfo::set_mode(oop element, int value) {
// Support for java Assertions - java_lang_AssertionStatusDirectives.
+void java_lang_AssertionStatusDirectives::compute_offsets() {
+ InstanceKlass* k = SystemDictionary::AssertionStatusDirectives_klass();
+ compute_offset(classes_offset, k, "classes", vmSymbols::string_array_signature());
+ compute_offset(classEnabled_offset, k, "classEnabled", vmSymbols::bool_array_signature());
+ compute_offset(packages_offset, k, "packages", vmSymbols::string_array_signature());
+ compute_offset(packageEnabled_offset, k, "packageEnabled", vmSymbols::bool_array_signature());
+ compute_offset(deflt_offset, k, "deflt", vmSymbols::bool_signature());
+}
+
+
void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
o->obj_field_put(classes_offset, val);
}
@@ -3804,18 +3791,18 @@ int java_nio_Buffer::limit_offset() {
void java_nio_Buffer::compute_offsets() {
- Klass* k = SystemDictionary::nio_Buffer_klass();
+ InstanceKlass* k = SystemDictionary::nio_Buffer_klass();
assert(k != NULL, "must be loaded in 1.4+");
- compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
+ compute_offset(_limit_offset, k, "limit", vmSymbols::int_signature());
}
void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
if (_owner_offset != 0) return;
SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
- Klass* k = SystemDictionary::abstract_ownable_synchronizer_klass();
+ InstanceKlass* k = SystemDictionary::abstract_ownable_synchronizer_klass();
compute_offset(_owner_offset, k,
- vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature());
+ "exclusiveOwnerThread", vmSymbols::thread_signature());
}
oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
@@ -3823,71 +3810,37 @@ oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(
return obj->obj_field(_owner_offset);
}
+static int member_offset(int hardcoded_offset) {
+ return (hardcoded_offset * heapOopSize) + instanceOopDesc::base_offset_in_bytes();
+}
+
// Compute hard-coded offsets
// Invoked before SystemDictionary::initialize, so pre-loaded classes
// are not available to determine the offset_of_static_fields.
void JavaClasses::compute_hard_coded_offsets() {
- const int x = heapOopSize;
- const int header = instanceOopDesc::base_offset_in_bytes();
-
- // Throwable Class
- java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header;
- java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header;
- java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header;
- java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x;
// java_lang_boxing_object
- java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header;
- java_lang_boxing_object::long_value_offset = align_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong);
-
- // java_lang_ref_Reference:
- java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header;
- java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header;
- java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header;
- java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header;
- // Artificial fields for java_lang_ref_Reference
- // The first field is for the discovered field added in 1.4
- java_lang_ref_Reference::number_of_fake_oop_fields = 1;
-
- // java_lang_ref_SoftReference Class
- java_lang_ref_SoftReference::timestamp_offset = align_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong);
- // Don't multiply static fields because they are always in wordSize units
- java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x;
-
- // java_lang_ClassLoader
- java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header;
-
- // java_lang_System
- java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x;
- java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x;
- java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x;
- java_lang_System::static_security_offset = java_lang_System::hc_static_security_offset * x;
-
- // java_lang_StackTraceElement
- java_lang_StackTraceElement::declaringClassObject_offset = java_lang_StackTraceElement::hc_declaringClassObject_offset * x + header;
- java_lang_StackTraceElement::classLoaderName_offset = java_lang_StackTraceElement::hc_classLoaderName_offset * x + header;
- java_lang_StackTraceElement::moduleName_offset = java_lang_StackTraceElement::hc_moduleName_offset * x + header;
- java_lang_StackTraceElement::moduleVersion_offset = java_lang_StackTraceElement::hc_moduleVersion_offset * x + header;
- java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header;
- java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header;
- java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header;
- java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header;
- java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header;
- java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header;
- java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header;
- java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header;
- java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header;
+ java_lang_boxing_object::value_offset = member_offset(java_lang_boxing_object::hc_value_offset);
+ java_lang_boxing_object::long_value_offset = align_up(member_offset(java_lang_boxing_object::hc_value_offset), BytesPerLong);
+ // java_lang_ref_Reference
+ java_lang_ref_Reference::referent_offset = member_offset(java_lang_ref_Reference::hc_referent_offset);
+ java_lang_ref_Reference::queue_offset = member_offset(java_lang_ref_Reference::hc_queue_offset);
+ java_lang_ref_Reference::next_offset = member_offset(java_lang_ref_Reference::hc_next_offset);
+ java_lang_ref_Reference::discovered_offset = member_offset(java_lang_ref_Reference::hc_discovered_offset);
}
// Compute non-hard-coded field offsets of all the classes in this file
void JavaClasses::compute_offsets() {
// java_lang_Class::compute_offsets was called earlier in bootstrap
+ java_lang_System::compute_offsets();
java_lang_ClassLoader::compute_offsets();
java_lang_Throwable::compute_offsets();
java_lang_Thread::compute_offsets();
java_lang_ThreadGroup::compute_offsets();
+ java_lang_AssertionStatusDirectives::compute_offsets();
+ java_lang_ref_SoftReference::compute_offsets();
java_lang_invoke_MethodHandle::compute_offsets();
java_lang_invoke_DirectMethodHandle::compute_offsets();
java_lang_invoke_MemberName::compute_offsets();
@@ -3910,6 +3863,7 @@ void JavaClasses::compute_offsets() {
reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
java_lang_reflect_Parameter::compute_offsets();
java_lang_Module::compute_offsets();
+ java_lang_StackTraceElement::compute_offsets();
java_lang_StackFrameInfo::compute_offsets();
java_lang_LiveStackFrameInfo::compute_offsets();
@@ -3947,62 +3901,6 @@ bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, con
}
}
-
-bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
- EXCEPTION_MARK;
- fieldDescriptor fd;
- TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
- Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
- InstanceKlass* ik = InstanceKlass::cast(k);
- TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
- TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
- if (!ik->find_local_field(f_name, f_sig, &fd)) {
- tty->print_cr("Static field %s.%s not found", klass_name, field_name);
- return false;
- }
- if (!fd.is_static()) {
- tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name);
- return false;
- }
- if (fd.offset() == hardcoded_offset + InstanceMirrorKlass::offset_of_static_fields()) {
- return true;
- } else {
- tty->print_cr("Offset of static field %s.%s is hardcoded as %d but should really be %d.", klass_name, field_name, hardcoded_offset, fd.offset() - InstanceMirrorKlass::offset_of_static_fields());
- return false;
- }
-}
-
-
-bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) {
- EXCEPTION_MARK;
- fieldDescriptor fd;
- TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
- Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
- InstanceKlass* ik = InstanceKlass::cast(k);
- TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
- TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
- if (!ik->find_local_field(f_name, f_sig, &fd)) {
- tty->print_cr("Static field %s.%s not found", klass_name, field_name);
- return false;
- }
- if (!fd.is_static() || !fd.has_initial_value()) {
- tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name);
- return false;
- }
- if (!fd.initial_value_tag().is_int()) {
- tty->print_cr("Static field %s.%s is not an int", klass_name, field_name);
- return false;
- }
- jint field_value = fd.int_initial_value();
- if (field_value == hardcoded_constant) {
- return true;
- } else {
- tty->print_cr("Constant value of static field %s.%s is hardcoded as %d but should really be %d.", klass_name, field_name, hardcoded_constant, field_value);
- return false;
- }
-}
-
-
// Check the hard-coded field offsets of all the classes in this file
void JavaClasses::check_offsets() {
@@ -4014,31 +3912,6 @@ void JavaClasses::check_offsets() {
#define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
-#define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
- valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig)
-
-#define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \
- valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig)
-
- // java.lang.String
-
- CHECK_OFFSET("java/lang/String", java_lang_String, value, "[B");
- CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
- CHECK_OFFSET("java/lang/String", java_lang_String, coder, "B");
-
- // java.lang.Class
-
- // Fake fields
- // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked
- // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked
-
- // java.lang.Throwable
-
- CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;");
- CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;");
- CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;");
- CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, depth, "I");
-
// Boxed primitive objects (java_lang_boxing_object)
CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
@@ -4050,28 +3923,6 @@ void JavaClasses::check_offsets() {
CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
- // java.lang.ClassLoader
-
- CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;");
-
- // java.lang.System
-
- CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;");
- CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;");
- CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;");
- CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, security, "Ljava/lang/SecurityManager;");
-
- // java.lang.StackTraceElement
-
- CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClassObject, "Ljava/lang/Class;");
- CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, classLoaderName, "Ljava/lang/String;");
- CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, moduleName, "Ljava/lang/String;");
- CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, moduleVersion, "Ljava/lang/String;");
- CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;");
- CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;");
- CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;");
- CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I");
-
// java.lang.ref.Reference
CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
@@ -4080,28 +3931,6 @@ void JavaClasses::check_offsets() {
// Fake field
//CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
- // java.lang.ref.SoftReference
-
- CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J");
- CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J");
-
- // java.lang.AssertionStatusDirectives
- //
- // The CheckAssertionStatusDirectives boolean can be removed from here and
- // globals.hpp after the AssertionStatusDirectives class has been integrated
- // into merlin "for some time." Without it, the vm will fail with early
- // merlin builds.
-
- if (CheckAssertionStatusDirectives) {
- const char* nm = "java/lang/AssertionStatusDirectives";
- const char* sig = "[Ljava/lang/String;";
- CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig);
- CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z");
- CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig);
- CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z");
- CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z");
- }
-
if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
}
diff --git a/src/hotspot/share/classfile/javaClasses.hpp b/src/hotspot/share/classfile/javaClasses.hpp
index 6ff74b80a85..2aa1f886c23 100644
--- a/src/hotspot/share/classfile/javaClasses.hpp
+++ b/src/hotspot/share/classfile/javaClasses.hpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -102,6 +102,7 @@ class java_lang_String : AllStatic {
// Accessors
static inline typeArrayOop value(oop java_string);
+ static inline typeArrayOop value_no_keepalive(oop java_string);
static inline unsigned int hash(oop java_string);
static inline bool is_latin1(oop java_string);
static inline int length(oop java_string);
@@ -444,9 +445,6 @@ class java_lang_Throwable: AllStatic {
hc_cause_offset = 2, // New since 1.4
hc_stackTrace_offset = 3 // New since 1.4
};
- enum {
- hc_static_unassigned_stacktrace_offset = 0 // New since 1.7
- };
// Trace constants
enum {
trace_methods_offset = 0,
@@ -878,7 +876,6 @@ class java_lang_ref_Reference: AllStatic {
static int queue_offset;
static int next_offset;
static int discovered_offset;
- static int number_of_fake_oop_fields;
// Accessors
static inline oop referent(oop ref);
@@ -902,14 +899,6 @@ class java_lang_ref_Reference: AllStatic {
class java_lang_ref_SoftReference: public java_lang_ref_Reference {
public:
- enum {
- // The timestamp is a long field and may need to be adjusted for alignment.
- hc_timestamp_offset = hc_discovered_offset + 1
- };
- enum {
- hc_static_clock_offset = 0
- };
-
static int timestamp_offset;
static int static_clock_offset;
@@ -919,6 +908,8 @@ class java_lang_ref_SoftReference: public java_lang_ref_Reference {
// Accessors for statics
static jlong clock();
static void set_clock(jlong value);
+
+ static void compute_offsets();
};
// Interface to java.lang.invoke.MethodHandle objects
@@ -1228,10 +1219,6 @@ class java_security_AccessControlContext: AllStatic {
class java_lang_ClassLoader : AllStatic {
private:
- // The fake offsets are added by the class loader when java.lang.Class is loaded
- enum {
- hc_parent_offset = 0
- };
static int _loader_data_offset;
static bool offsets_computed;
static int parent_offset;
@@ -1279,13 +1266,6 @@ class java_lang_ClassLoader : AllStatic {
class java_lang_System : AllStatic {
private:
- enum {
- hc_static_in_offset = 0,
- hc_static_out_offset = 1,
- hc_static_err_offset = 2,
- hc_static_security_offset = 3
- };
-
static int static_in_offset;
static int static_out_offset;
static int static_err_offset;
@@ -1298,6 +1278,8 @@ class java_lang_System : AllStatic {
static bool has_security_manager();
+ static void compute_offsets();
+
// Debugging
friend class JavaClasses;
};
@@ -1307,17 +1289,6 @@ class java_lang_System : AllStatic {
class java_lang_StackTraceElement: AllStatic {
private:
- enum {
- hc_declaringClassObject_offset = 0,
- hc_classLoaderName_offset = 1,
- hc_moduleName_offset = 2,
- hc_moduleVersion_offset = 3,
- hc_declaringClass_offset = 4,
- hc_methodName_offset = 5,
- hc_fileName_offset = 6,
- hc_lineNumber_offset = 7
- };
-
static int declaringClassObject_offset;
static int classLoaderName_offset;
static int moduleName_offset;
@@ -1344,6 +1315,8 @@ class java_lang_StackTraceElement: AllStatic {
static void fill_in(Handle element, InstanceKlass* holder, const methodHandle& method,
int version, int bci, Symbol* name, TRAPS);
+ static void compute_offsets();
+
// Debugging
friend class JavaClasses;
};
@@ -1416,14 +1389,6 @@ class java_lang_LiveStackFrameInfo: AllStatic {
class java_lang_AssertionStatusDirectives: AllStatic {
private:
- enum {
- hc_classes_offset,
- hc_classEnabled_offset,
- hc_packages_offset,
- hc_packageEnabled_offset,
- hc_deflt_offset
- };
-
static int classes_offset;
static int classEnabled_offset;
static int packages_offset;
@@ -1437,6 +1402,9 @@ class java_lang_AssertionStatusDirectives: AllStatic {
static void set_packages(oop obj, oop val);
static void set_packageEnabled(oop obj, oop val);
static void set_deflt(oop obj, bool val);
+
+ static void compute_offsets();
+
// Debugging
friend class JavaClasses;
};
@@ -1508,9 +1476,6 @@ class JavaClasses : AllStatic {
static InjectedField _injected_fields[];
static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
- static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
- static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
-
public:
enum InjectedFieldID {
ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD_ENUM)
diff --git a/src/hotspot/share/classfile/javaClasses.inline.hpp b/src/hotspot/share/classfile/javaClasses.inline.hpp
index f4da4293a90..1ca986a4c48 100644
--- a/src/hotspot/share/classfile/javaClasses.inline.hpp
+++ b/src/hotspot/share/classfile/javaClasses.inline.hpp
@@ -26,6 +26,7 @@
#define SHARE_VM_CLASSFILE_JAVACLASSES_INLINE_HPP
#include "classfile/javaClasses.hpp"
+#include "oops/access.inline.hpp"
#include "oops/oop.inline.hpp"
#include "oops/oopsHierarchy.hpp"
@@ -53,6 +54,11 @@ typeArrayOop java_lang_String::value(oop java_string) {
assert(is_instance(java_string), "must be java_string");
return (typeArrayOop) java_string->obj_field(value_offset);
}
+typeArrayOop java_lang_String::value_no_keepalive(oop java_string) {
+ assert(initialized && (value_offset > 0), "Must be initialized");
+ assert(is_instance(java_string), "must be java_string");
+ return (typeArrayOop) java_string->obj_field_access(value_offset);
+}
unsigned int java_lang_String::hash(oop java_string) {
assert(initialized && (hash_offset > 0), "Must be initialized");
assert(is_instance(java_string), "must be java_string");
@@ -68,11 +74,11 @@ bool java_lang_String::is_latin1(oop java_string) {
int java_lang_String::length(oop java_string) {
assert(initialized, "Must be initialized");
assert(is_instance(java_string), "must be java_string");
- typeArrayOop value_array = ((typeArrayOop)java_string->obj_field(value_offset));
- if (value_array == NULL) {
+ typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
+ if (value == NULL) {
return 0;
}
- int arr_length = value_array->length();
+ int arr_length = value->length();
if (!is_latin1(java_string)) {
assert((arr_length & 1) == 0, "should be even for UTF16 string");
arr_length >>= 1; // convert number of bytes to number of elements
diff --git a/src/hotspot/share/classfile/stringTable.cpp b/src/hotspot/share/classfile/stringTable.cpp
index 307636be560..a4ba7fd7a05 100644
--- a/src/hotspot/share/classfile/stringTable.cpp
+++ b/src/hotspot/share/classfile/stringTable.cpp
@@ -35,6 +35,7 @@
#include "memory/filemap.hpp"
#include "memory/metaspaceShared.hpp"
#include "memory/resourceArea.hpp"
+#include "oops/access.inline.hpp"
#include "oops/oop.inline.hpp"
#include "runtime/atomic.hpp"
#include "runtime/mutexLocker.hpp"
@@ -43,7 +44,6 @@
#include "utilities/macros.hpp"
#if INCLUDE_ALL_GCS
#include "gc/g1/g1CollectedHeap.hpp"
-#include "gc/g1/g1SATBCardTableModRefBS.hpp"
#include "gc/g1/g1StringDedup.hpp"
#endif
@@ -124,6 +124,22 @@ unsigned int StringTable::hash_string(oop string) {
}
}
+oop StringTable::string_object(HashtableEntry* entry) {
+ return RootAccess::oop_load(entry->literal_addr());
+}
+
+oop StringTable::string_object_no_keepalive(HashtableEntry* entry) {
+ // The AS_NO_KEEPALIVE peeks at the oop without keeping it alive.
+ // This is *very dangerous* in general but is okay in this specific
+ // case. The subsequent oop_load keeps the oop alive if it it matched
+ // the jchar* string.
+ return RootAccess::oop_load(entry->literal_addr());
+}
+
+void StringTable::set_string_object(HashtableEntry* entry, oop string) {
+ RootAccess::oop_store(entry->literal_addr(), string);
+}
+
oop StringTable::lookup_shared(jchar* name, int len, unsigned int hash) {
assert(hash == java_lang_String::hash_code(name, len),
"hash must be computed using java_lang_String::hash_code");
@@ -131,13 +147,16 @@ oop StringTable::lookup_shared(jchar* name, int len, unsigned int hash) {
}
oop StringTable::lookup_in_main_table(int index, jchar* name,
- int len, unsigned int hash) {
+ int len, unsigned int hash) {
int count = 0;
for (HashtableEntry* l = bucket(index); l != NULL; l = l->next()) {
count++;
if (l->hash() == hash) {
- if (java_lang_String::equals(l->literal(), name, len)) {
- return l->literal();
+ if (java_lang_String::equals(string_object_no_keepalive(l), name, len)) {
+ // We must perform a new load with string_object() that keeps the string
+ // alive as we must expose the oop as strongly reachable when exiting
+ // this context, in case the oop gets published.
+ return string_object(l);
}
}
}
@@ -192,18 +211,6 @@ oop StringTable::lookup(Symbol* symbol) {
return lookup(chars, length);
}
-// Tell the GC that this string was looked up in the StringTable.
-static void ensure_string_alive(oop string) {
- // A lookup in the StringTable could return an object that was previously
- // considered dead. The SATB part of G1 needs to get notified about this
- // potential resurrection, otherwise the marking might not find the object.
-#if INCLUDE_ALL_GCS
- if (UseG1GC && string != NULL) {
- G1SATBCardTableModRefBS::enqueue(string);
- }
-#endif
-}
-
oop StringTable::lookup(jchar* name, int len) {
// shared table always uses java_lang_String::hash_code
unsigned int hash = java_lang_String::hash_code(name, len);
@@ -217,8 +224,6 @@ oop StringTable::lookup(jchar* name, int len) {
int index = the_table()->hash_to_index(hash);
string = the_table()->lookup_in_main_table(index, name, len, hash);
- ensure_string_alive(string);
-
return string;
}
@@ -238,9 +243,6 @@ oop StringTable::intern(Handle string_or_null, jchar* name,
// Found
if (found_string != NULL) {
- if (found_string != string_or_null()) {
- ensure_string_alive(found_string);
- }
return found_string;
}
@@ -276,10 +278,6 @@ oop StringTable::intern(Handle string_or_null, jchar* name,
hashValue, CHECK_NULL);
}
- if (added_or_found != string()) {
- ensure_string_alive(added_or_found);
- }
-
return added_or_found;
}
@@ -388,9 +386,9 @@ void StringTable::buckets_unlink_or_oops_do(BoolObjectClosure* is_alive, OopClos
while (entry != NULL) {
assert(!entry->is_shared(), "CDS not used for the StringTable");
- if (is_alive->do_object_b(entry->literal())) {
+ if (is_alive->do_object_b(string_object_no_keepalive(entry))) {
if (f != NULL) {
- f->do_oop((oop*)entry->literal_addr());
+ f->do_oop(entry->literal_addr());
}
p = entry->next_addr();
} else {
@@ -429,7 +427,7 @@ void StringTable::verify() {
for (int i = 0; i < the_table()->table_size(); ++i) {
HashtableEntry* p = the_table()->bucket(i);
for ( ; p != NULL; p = p->next()) {
- oop s = p->literal();
+ oop s = string_object_no_keepalive(p);
guarantee(s != NULL, "interned string is NULL");
unsigned int h = hash_string(s);
guarantee(p->hash() == h, "broken hash in string table entry");
@@ -448,10 +446,10 @@ void StringTable::dump(outputStream* st, bool verbose) {
for (int i = 0; i < the_table()->table_size(); ++i) {
HashtableEntry* p = the_table()->bucket(i);
for ( ; p != NULL; p = p->next()) {
- oop s = p->literal();
- typeArrayOop value = java_lang_String::value(s);
- int length = java_lang_String::length(s);
- bool is_latin1 = java_lang_String::is_latin1(s);
+ oop s = string_object_no_keepalive(p);
+ typeArrayOop value = java_lang_String::value_no_keepalive(s);
+ int length = java_lang_String::length(s);
+ bool is_latin1 = java_lang_String::is_latin1(s);
if (length <= 0) {
st->print("%d: ", length);
@@ -484,8 +482,8 @@ StringTable::VerifyRetTypes StringTable::compare_entries(
HashtableEntry* e_ptr2) {
// These entries are sanity checked by verify_and_compare_entries()
// before this function is called.
- oop str1 = e_ptr1->literal();
- oop str2 = e_ptr2->literal();
+ oop str1 = string_object_no_keepalive(e_ptr1);
+ oop str2 = string_object_no_keepalive(e_ptr2);
if (str1 == str2) {
tty->print_cr("ERROR: identical oop values (0x" PTR_FORMAT ") "
@@ -505,12 +503,12 @@ StringTable::VerifyRetTypes StringTable::compare_entries(
}
StringTable::VerifyRetTypes StringTable::verify_entry(int bkt, int e_cnt,
- HashtableEntry* e_ptr,
- StringTable::VerifyMesgModes mesg_mode) {
+ HashtableEntry* e_ptr,
+ StringTable::VerifyMesgModes mesg_mode) {
VerifyRetTypes ret = _verify_pass; // be optimistic
- oop str = e_ptr->literal();
+ oop str = string_object_no_keepalive(e_ptr);
if (str == NULL) {
if (mesg_mode == _verify_with_mesgs) {
tty->print_cr("ERROR: NULL oop value in entry @ bucket[%d][%d]", bkt,
@@ -684,7 +682,7 @@ oop StringTable::create_archived_string(oop s, Thread* THREAD) {
assert(DumpSharedSpaces, "this function is only used with -Xshare:dump");
oop new_s = NULL;
- typeArrayOop v = java_lang_String::value(s);
+ typeArrayOop v = java_lang_String::value_no_keepalive(s);
typeArrayOop new_v = (typeArrayOop)MetaspaceShared::archive_heap_object(v, THREAD);
if (new_v == NULL) {
return NULL;
@@ -708,7 +706,7 @@ bool StringTable::copy_shared_string(GrowableArray *string_space,
for (int i = 0; i < the_table()->table_size(); ++i) {
HashtableEntry* bucket = the_table()->bucket(i);
for ( ; bucket != NULL; bucket = bucket->next()) {
- oop s = bucket->literal();
+ oop s = string_object_no_keepalive(bucket);
unsigned int hash = java_lang_String::hash_code(s);
if (hash == 0) {
continue;
@@ -721,7 +719,7 @@ bool StringTable::copy_shared_string(GrowableArray *string_space,
}
// set the archived string in bucket
- bucket->set_literal(new_s);
+ set_string_object(bucket, new_s);
// add to the compact table
writer->add(hash, new_s);
@@ -763,4 +761,3 @@ void StringTable::shared_oops_do(OopClosure* f) {
_shared_table.oops_do(f);
}
#endif //INCLUDE_CDS_JAVA_HEAP
-
diff --git a/src/hotspot/share/classfile/stringTable.hpp b/src/hotspot/share/classfile/stringTable.hpp
index 77538a53e5c..e0c957c67f4 100644
--- a/src/hotspot/share/classfile/stringTable.hpp
+++ b/src/hotspot/share/classfile/stringTable.hpp
@@ -76,6 +76,13 @@ private:
static unsigned int hash_string(oop string);
static unsigned int alt_hash_string(const jchar* s, int len);
+ // Accessors for the string roots in the hashtable entries.
+ // Use string_object_no_keepalive() only when the value is not returned
+ // outside of a scope where a thread transition is possible.
+ static oop string_object(HashtableEntry* entry);
+ static oop string_object_no_keepalive(HashtableEntry* entry);
+ static void set_string_object(HashtableEntry* entry, oop string);
+
StringTable() : RehashableHashtable((int)StringTableSize,
sizeof (HashtableEntry)) {}
diff --git a/src/hotspot/share/classfile/systemDictionary.hpp b/src/hotspot/share/classfile/systemDictionary.hpp
index af22cf977ee..bf2ecec35ab 100644
--- a/src/hotspot/share/classfile/systemDictionary.hpp
+++ b/src/hotspot/share/classfile/systemDictionary.hpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -173,6 +173,7 @@ class GCTimer;
do_klass(VolatileCallSite_klass, java_lang_invoke_VolatileCallSite, Pre ) \
/* Note: MethodHandle must be first, and VolatileCallSite last in group */ \
\
+ do_klass(AssertionStatusDirectives_klass, java_lang_AssertionStatusDirectives, Pre ) \
do_klass(StringBuffer_klass, java_lang_StringBuffer, Pre ) \
do_klass(StringBuilder_klass, java_lang_StringBuilder, Pre ) \
do_klass(internal_Unsafe_klass, jdk_internal_misc_Unsafe, Pre ) \
diff --git a/src/hotspot/share/classfile/vmSymbols.hpp b/src/hotspot/share/classfile/vmSymbols.hpp
index 0ce801a743c..7048b368d5b 100644
--- a/src/hotspot/share/classfile/vmSymbols.hpp
+++ b/src/hotspot/share/classfile/vmSymbols.hpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -251,7 +251,6 @@
template(compiledLambdaForm_name, "") /*fake name*/ \
template(star_name, "*") /*not really a name*/ \
template(invoke_name, "invoke") \
- template(override_name, "override") \
template(parameterTypes_name, "parameterTypes") \
template(returnType_name, "returnType") \
template(signature_name, "signature") \
@@ -265,7 +264,6 @@
template(parameter_annotations_name, "parameterAnnotations") \
template(annotation_default_name, "annotationDefault") \
template(reflect_ConstantPool, "jdk/internal/reflect/ConstantPool") \
- template(ConstantPool_name, "constantPoolOop") \
template(reflect_UnsafeStaticFieldAccessorImpl, "jdk/internal/reflect/UnsafeStaticFieldAccessorImpl")\
template(base_name, "base") \
/* Type Annotations (JDK 8 and above) */ \
@@ -341,8 +339,6 @@
template(stillborn_name, "stillborn") \
template(group_name, "group") \
template(daemon_name, "daemon") \
- template(eetop_name, "eetop") \
- template(thread_status_name, "threadStatus") \
template(run_method_name, "run") \
template(exit_method_name, "exit") \
template(add_method_name, "add") \
@@ -376,34 +372,21 @@
template(fillInStackTrace_name, "fillInStackTrace") \
template(getCause_name, "getCause") \
template(initCause_name, "initCause") \
- template(depth_name, "depth") \
template(setProperty_name, "setProperty") \
template(getProperty_name, "getProperty") \
template(context_name, "context") \
- template(privilegedContext_name, "privilegedContext") \
template(contextClassLoader_name, "contextClassLoader") \
template(inheritedAccessControlContext_name, "inheritedAccessControlContext") \
- template(isPrivileged_name, "isPrivileged") \
- template(isAuthorized_name, "isAuthorized") \
template(getClassContext_name, "getClassContext") \
template(wait_name, "wait") \
template(checkPackageAccess_name, "checkPackageAccess") \
- template(stackSize_name, "stackSize") \
- template(thread_id_name, "tid") \
template(newInstance0_name, "newInstance0") \
- template(limit_name, "limit") \
- template(member_name, "member") \
template(forName_name, "forName") \
template(forName0_name, "forName0") \
template(isJavaIdentifierStart_name, "isJavaIdentifierStart") \
template(isJavaIdentifierPart_name, "isJavaIdentifierPart") \
- template(exclusive_owner_thread_name, "exclusiveOwnerThread") \
- template(park_blocker_name, "parkBlocker") \
- template(park_event_name, "nativeParkEventPointer") \
template(cache_field_name, "cache") \
template(value_name, "value") \
- template(hash_name, "hash") \
- template(coder_name, "coder") \
template(compact_strings_name, "COMPACT_STRINGS") \
template(numberOfLeadingZeros_name, "numberOfLeadingZeros") \
template(numberOfTrailingZeros_name, "numberOfTrailingZeros") \
@@ -420,27 +403,17 @@
template(method_name, "method") \
template(vmindex_name, "vmindex") \
template(vmcount_name, "vmcount") \
- template(vmentry_name, "vmentry") \
template(flags_name, "flags") \
- template(rtype_name, "rtype") \
- template(ptypes_name, "ptypes") \
- template(form_name, "form") \
template(basicType_name, "basicType") \
template(append_name, "append") \
template(klass_name, "klass") \
template(array_klass_name, "array_klass") \
- template(memberName_name, "memberName") \
template(mid_name, "mid") \
template(cpref_name, "cpref") \
template(version_name, "version") \
- template(bci_name, "bci") \
template(methodName_name, "methodName") \
template(fileName_name, "fileName") \
template(lineNumber_name, "lineNumber") \
- template(monitors_name, "monitors") \
- template(locals_name, "locals") \
- template(operands_name, "operands") \
- template(mode_name, "mode") \
template(oop_size_name, "oop_size") \
template(static_oop_field_count_name, "static_oop_field_count") \
template(protection_domain_name, "protection_domain") \
@@ -448,9 +421,11 @@
template(loader_data_name, "loader_data") \
template(vmdependencies_name, "vmdependencies") \
template(loader_name, "loader") \
- template(module_name, "module") \
template(getModule_name, "getModule") \
template(input_stream_void_signature, "(Ljava/io/InputStream;)V") \
+ template(input_stream_signature, "Ljava/io/InputStream;") \
+ template(print_stream_signature, "Ljava/io/PrintStream;") \
+ template(security_manager_signature, "Ljava/lang/SecurityManager;") \
template(definePackage_name, "definePackage") \
template(definePackage_signature, "(Ljava/lang/String;Ljava/lang/Module;)Ljava/lang/Package;") \
template(defineOrCheckPackage_name, "defineOrCheckPackage") \
@@ -499,6 +474,7 @@
template(short_signature, "S") \
template(bool_signature, "Z") \
template(void_signature, "V") \
+ template(bool_array_signature, "[Z") \
template(byte_array_signature, "[B") \
template(char_array_signature, "[C") \
template(int_array_signature, "[I") \
@@ -553,6 +529,7 @@
template(object_array_signature, "[Ljava/lang/Object;") \
template(class_signature, "Ljava/lang/Class;") \
template(string_signature, "Ljava/lang/String;") \
+ template(string_array_signature, "[Ljava/lang/String;") \
template(reference_signature, "Ljava/lang/ref/Reference;") \
template(sun_misc_Cleaner_signature, "Lsun/misc/Cleaner;") \
template(executable_signature, "Ljava/lang/reflect/Executable;") \
@@ -579,12 +556,6 @@
/* used by ClassFormatError when class name is not known yet */ \
template(unknown_class_name, "") \
\
- /* used to identify class loaders handling parallel class loading */ \
- template(parallelCapable_name, "parallelLockMap") \
- \
- /* used to return a class loader's unnamed module */ \
- template(unnamedModule_name, "unnamedModule") \
- \
/* JVM monitoring and management support */ \
template(java_lang_StackTraceElement_array, "[Ljava/lang/StackTraceElement;") \
template(java_lang_management_ThreadState, "java/lang/management/ThreadState") \
diff --git a/src/hotspot/share/gc/g1/g1CollectedHeap.cpp b/src/hotspot/share/gc/g1/g1CollectedHeap.cpp
index 3fbaa30250b..a77f7942955 100644
--- a/src/hotspot/share/gc/g1/g1CollectedHeap.cpp
+++ b/src/hotspot/share/gc/g1/g1CollectedHeap.cpp
@@ -445,9 +445,7 @@ HeapWord* G1CollectedHeap::allocate_new_tlab(size_t word_size) {
assert_heap_not_locked_and_not_at_safepoint();
assert(!is_humongous(word_size), "we do not allow humongous TLABs");
- uint dummy_gc_count_before;
- uint dummy_gclocker_retry_count = 0;
- return attempt_allocation(word_size, &dummy_gc_count_before, &dummy_gclocker_retry_count);
+ return attempt_allocation(word_size);
}
HeapWord*
@@ -455,62 +453,16 @@ G1CollectedHeap::mem_allocate(size_t word_size,
bool* gc_overhead_limit_was_exceeded) {
assert_heap_not_locked_and_not_at_safepoint();
- // Loop until the allocation is satisfied, or unsatisfied after GC.
- for (uint try_count = 1, gclocker_retry_count = 0; /* we'll return */; try_count += 1) {
- uint gc_count_before;
-
- HeapWord* result = NULL;
- if (!is_humongous(word_size)) {
- result = attempt_allocation(word_size, &gc_count_before, &gclocker_retry_count);
- } else {
- result = attempt_allocation_humongous(word_size, &gc_count_before, &gclocker_retry_count);
- }
- if (result != NULL) {
- return result;
- }
-
- // Create the garbage collection operation...
- VM_G1CollectForAllocation op(gc_count_before, word_size);
- op.set_allocation_context(AllocationContext::current());
-
- // ...and get the VM thread to execute it.
- VMThread::execute(&op);
-
- if (op.prologue_succeeded() && op.pause_succeeded()) {
- // If the operation was successful we'll return the result even
- // if it is NULL. If the allocation attempt failed immediately
- // after a Full GC, it's unlikely we'll be able to allocate now.
- HeapWord* result = op.result();
- if (result != NULL && !is_humongous(word_size)) {
- // Allocations that take place on VM operations do not do any
- // card dirtying and we have to do it here. We only have to do
- // this for non-humongous allocations, though.
- dirty_young_block(result, word_size);
- }
- return result;
- } else {
- if (gclocker_retry_count > GCLockerRetryAllocationCount) {
- return NULL;
- }
- assert(op.result() == NULL,
- "the result should be NULL if the VM op did not succeed");
- }
-
- // Give a warning if we seem to be looping forever.
- if ((QueuedAllocationWarningCount > 0) &&
- (try_count % QueuedAllocationWarningCount == 0)) {
- log_warning(gc)("G1CollectedHeap::mem_allocate retries %d times", try_count);
- }
+ if (is_humongous(word_size)) {
+ return attempt_allocation_humongous(word_size);
}
-
- ShouldNotReachHere();
- return NULL;
+ return attempt_allocation(word_size);
}
HeapWord* G1CollectedHeap::attempt_allocation_slow(size_t word_size,
- AllocationContext_t context,
- uint* gc_count_before_ret,
- uint* gclocker_retry_count_ret) {
+ AllocationContext_t context) {
+ ResourceMark rm; // For retrieving the thread names in log messages.
+
// Make sure you read the note in attempt_allocation_humongous().
assert_heap_not_locked_and_not_at_safepoint();
@@ -525,7 +477,7 @@ HeapWord* G1CollectedHeap::attempt_allocation_slow(size_t word_size,
// fails to perform the allocation. b) is the only case when we'll
// return NULL.
HeapWord* result = NULL;
- for (int try_count = 1; /* we'll return */; try_count += 1) {
+ for (uint try_count = 1, gclocker_retry_count = 0; /* we'll return */; try_count += 1) {
bool should_try_gc;
uint gc_count_before;
@@ -536,30 +488,23 @@ HeapWord* G1CollectedHeap::attempt_allocation_slow(size_t word_size,
return result;
}
- if (GCLocker::is_active_and_needs_gc()) {
- if (g1_policy()->can_expand_young_list()) {
- // No need for an ergo verbose message here,
- // can_expand_young_list() does this when it returns true.
- result = _allocator->attempt_allocation_force(word_size, context);
- if (result != NULL) {
- return result;
- }
- }
- should_try_gc = false;
- } else {
- // The GCLocker may not be active but the GCLocker initiated
- // GC may not yet have been performed (GCLocker::needs_gc()
- // returns true). In this case we do not try this GC and
- // wait until the GCLocker initiated GC is performed, and
- // then retry the allocation.
- if (GCLocker::needs_gc()) {
- should_try_gc = false;
- } else {
- // Read the GC count while still holding the Heap_lock.
- gc_count_before = total_collections();
- should_try_gc = true;
+ // If the GCLocker is active and we are bound for a GC, try expanding young gen.
+ // This is different to when only GCLocker::needs_gc() is set: try to avoid
+ // waiting because the GCLocker is active to not wait too long.
+ if (GCLocker::is_active_and_needs_gc() && g1_policy()->can_expand_young_list()) {
+ // No need for an ergo message here, can_expand_young_list() does this when
+ // it returns true.
+ result = _allocator->attempt_allocation_force(word_size, context);
+ if (result != NULL) {
+ return result;
}
}
+ // Only try a GC if the GCLocker does not signal the need for a GC. Wait until
+ // the GCLocker initiated GC has been performed and then retry. This includes
+ // the case when the GC Locker is not active but has not been performed.
+ should_try_gc = !GCLocker::needs_gc();
+ // Read the GC count while still holding the Heap_lock.
+ gc_count_before = total_collections();
}
if (should_try_gc) {
@@ -568,28 +513,33 @@ HeapWord* G1CollectedHeap::attempt_allocation_slow(size_t word_size,
GCCause::_g1_inc_collection_pause);
if (result != NULL) {
assert(succeeded, "only way to get back a non-NULL result");
+ log_trace(gc, alloc)("%s: Successfully scheduled collection returning " PTR_FORMAT,
+ Thread::current()->name(), p2i(result));
return result;
}
if (succeeded) {
- // If we get here we successfully scheduled a collection which
- // failed to allocate. No point in trying to allocate
- // further. We'll just return NULL.
- MutexLockerEx x(Heap_lock);
- *gc_count_before_ret = total_collections();
+ // We successfully scheduled a collection which failed to allocate. No
+ // point in trying to allocate further. We'll just return NULL.
+ log_trace(gc, alloc)("%s: Successfully scheduled collection failing to allocate "
+ SIZE_FORMAT " words", Thread::current()->name(), word_size);
return NULL;
}
+ log_trace(gc, alloc)("%s: Unsuccessfully scheduled collection allocating " SIZE_FORMAT " words",
+ Thread::current()->name(), word_size);
} else {
- if (*gclocker_retry_count_ret > GCLockerRetryAllocationCount) {
- MutexLockerEx x(Heap_lock);
- *gc_count_before_ret = total_collections();
+ // Failed to schedule a collection.
+ if (gclocker_retry_count > GCLockerRetryAllocationCount) {
+ log_warning(gc, alloc)("%s: Retried waiting for GCLocker too often allocating "
+ SIZE_FORMAT " words", Thread::current()->name(), word_size);
return NULL;
}
+ log_trace(gc, alloc)("%s: Stall until clear", Thread::current()->name());
// The GCLocker is either active or the GCLocker initiated
// GC has not yet been performed. Stall until it is and
// then retry the allocation.
GCLocker::stall_until_clear();
- (*gclocker_retry_count_ret) += 1;
+ gclocker_retry_count += 1;
}
// We can reach here if we were unsuccessful in scheduling a
@@ -600,6 +550,7 @@ HeapWord* G1CollectedHeap::attempt_allocation_slow(size_t word_size,
// first attempt (without holding the Heap_lock) here and the
// follow-on attempt will be at the start of the next loop
// iteration (after taking the Heap_lock).
+
result = _allocator->attempt_allocation(word_size, context);
if (result != NULL) {
return result;
@@ -608,8 +559,8 @@ HeapWord* G1CollectedHeap::attempt_allocation_slow(size_t word_size,
// Give a warning if we seem to be looping forever.
if ((QueuedAllocationWarningCount > 0) &&
(try_count % QueuedAllocationWarningCount == 0)) {
- log_warning(gc)("G1CollectedHeap::attempt_allocation_slow() "
- "retries %d times", try_count);
+ log_warning(gc, alloc)("%s: Retried allocation %u times for " SIZE_FORMAT " words",
+ Thread::current()->name(), try_count, word_size);
}
}
@@ -830,9 +781,7 @@ void G1CollectedHeap::fill_archive_regions(MemRegion* ranges, size_t count) {
}
}
-inline HeapWord* G1CollectedHeap::attempt_allocation(size_t word_size,
- uint* gc_count_before_ret,
- uint* gclocker_retry_count_ret) {
+inline HeapWord* G1CollectedHeap::attempt_allocation(size_t word_size) {
assert_heap_not_locked_and_not_at_safepoint();
assert(!is_humongous(word_size), "attempt_allocation() should not "
"be called for humongous allocation requests");
@@ -841,10 +790,7 @@ inline HeapWord* G1CollectedHeap::attempt_allocation(size_t word_size,
HeapWord* result = _allocator->attempt_allocation(word_size, context);
if (result == NULL) {
- result = attempt_allocation_slow(word_size,
- context,
- gc_count_before_ret,
- gclocker_retry_count_ret);
+ result = attempt_allocation_slow(word_size, context);
}
assert_heap_not_locked();
if (result != NULL) {
@@ -925,9 +871,9 @@ void G1CollectedHeap::dealloc_archive_regions(MemRegion* ranges, size_t count) {
decrease_used(size_used);
}
-HeapWord* G1CollectedHeap::attempt_allocation_humongous(size_t word_size,
- uint* gc_count_before_ret,
- uint* gclocker_retry_count_ret) {
+HeapWord* G1CollectedHeap::attempt_allocation_humongous(size_t word_size) {
+ ResourceMark rm; // For retrieving the thread names in log messages.
+
// The structure of this method has a lot of similarities to
// attempt_allocation_slow(). The reason these two were not merged
// into a single one is that such a method would require several "if
@@ -958,10 +904,11 @@ HeapWord* G1CollectedHeap::attempt_allocation_humongous(size_t word_size,
// fails to perform the allocation. b) is the only case when we'll
// return NULL.
HeapWord* result = NULL;
- for (int try_count = 1; /* we'll return */; try_count += 1) {
+ for (uint try_count = 1, gclocker_retry_count = 0; /* we'll return */; try_count += 1) {
bool should_try_gc;
uint gc_count_before;
+
{
MutexLockerEx x(Heap_lock);
@@ -975,69 +922,63 @@ HeapWord* G1CollectedHeap::attempt_allocation_humongous(size_t word_size,
return result;
}
- if (GCLocker::is_active_and_needs_gc()) {
- should_try_gc = false;
- } else {
- // The GCLocker may not be active but the GCLocker initiated
- // GC may not yet have been performed (GCLocker::needs_gc()
- // returns true). In this case we do not try this GC and
- // wait until the GCLocker initiated GC is performed, and
- // then retry the allocation.
- if (GCLocker::needs_gc()) {
- should_try_gc = false;
- } else {
- // Read the GC count while still holding the Heap_lock.
- gc_count_before = total_collections();
- should_try_gc = true;
- }
- }
+ // Only try a GC if the GCLocker does not signal the need for a GC. Wait until
+ // the GCLocker initiated GC has been performed and then retry. This includes
+ // the case when the GC Locker is not active but has not been performed.
+ should_try_gc = !GCLocker::needs_gc();
+ // Read the GC count while still holding the Heap_lock.
+ gc_count_before = total_collections();
}
if (should_try_gc) {
- // If we failed to allocate the humongous object, we should try to
- // do a collection pause (if we're allowed) in case it reclaims
- // enough space for the allocation to succeed after the pause.
-
bool succeeded;
result = do_collection_pause(word_size, gc_count_before, &succeeded,
GCCause::_g1_humongous_allocation);
if (result != NULL) {
assert(succeeded, "only way to get back a non-NULL result");
+ log_trace(gc, alloc)("%s: Successfully scheduled collection returning " PTR_FORMAT,
+ Thread::current()->name(), p2i(result));
return result;
}
if (succeeded) {
- // If we get here we successfully scheduled a collection which
- // failed to allocate. No point in trying to allocate
- // further. We'll just return NULL.
- MutexLockerEx x(Heap_lock);
- *gc_count_before_ret = total_collections();
+ // We successfully scheduled a collection which failed to allocate. No
+ // point in trying to allocate further. We'll just return NULL.
+ log_trace(gc, alloc)("%s: Successfully scheduled collection failing to allocate "
+ SIZE_FORMAT " words", Thread::current()->name(), word_size);
return NULL;
}
+ log_trace(gc, alloc)("%s: Unsuccessfully scheduled collection allocating " SIZE_FORMAT "",
+ Thread::current()->name(), word_size);
} else {
- if (*gclocker_retry_count_ret > GCLockerRetryAllocationCount) {
- MutexLockerEx x(Heap_lock);
- *gc_count_before_ret = total_collections();
+ // Failed to schedule a collection.
+ if (gclocker_retry_count > GCLockerRetryAllocationCount) {
+ log_warning(gc, alloc)("%s: Retried waiting for GCLocker too often allocating "
+ SIZE_FORMAT " words", Thread::current()->name(), word_size);
return NULL;
}
+ log_trace(gc, alloc)("%s: Stall until clear", Thread::current()->name());
// The GCLocker is either active or the GCLocker initiated
// GC has not yet been performed. Stall until it is and
// then retry the allocation.
GCLocker::stall_until_clear();
- (*gclocker_retry_count_ret) += 1;
+ gclocker_retry_count += 1;
}
+
// We can reach here if we were unsuccessful in scheduling a
// collection (because another thread beat us to it) or if we were
// stalled due to the GC locker. In either can we should retry the
// allocation attempt in case another thread successfully
- // performed a collection and reclaimed enough space. Give a
- // warning if we seem to be looping forever.
+ // performed a collection and reclaimed enough space.
+ // Humongous object allocation always needs a lock, so we wait for the retry
+ // in the next iteration of the loop, unlike for the regular iteration case.
+ // Give a warning if we seem to be looping forever.
if ((QueuedAllocationWarningCount > 0) &&
(try_count % QueuedAllocationWarningCount == 0)) {
- log_warning(gc)("G1CollectedHeap::attempt_allocation_humongous() "
- "retries %d times", try_count);
+ log_warning(gc, alloc)("%s: Retried allocation %u times for " SIZE_FORMAT " words",
+ Thread::current()->name(), try_count, word_size);
}
}
@@ -1339,7 +1280,6 @@ HeapWord* G1CollectedHeap::satisfy_failed_allocation_helper(size_t word_size,
context,
expect_null_mutator_alloc_region);
if (result != NULL) {
- assert(*gc_succeeded, "sanity");
return result;
}
@@ -1349,7 +1289,6 @@ HeapWord* G1CollectedHeap::satisfy_failed_allocation_helper(size_t word_size,
// do something smarter than full collection to satisfy a failed alloc.)
result = expand_and_allocate(word_size, context);
if (result != NULL) {
- assert(*gc_succeeded, "sanity");
return result;
}
@@ -1401,7 +1340,6 @@ HeapWord* G1CollectedHeap::satisfy_failed_allocation(size_t word_size,
succeeded);
if (result != NULL) {
- assert(*succeeded, "sanity");
return result;
}
@@ -1412,7 +1350,6 @@ HeapWord* G1CollectedHeap::satisfy_failed_allocation(size_t word_size,
// space available is large enough for the allocation, then a more
// complete compaction phase than we've tried so far might be
// appropriate.
- assert(*succeeded, "sanity");
return NULL;
}
@@ -2147,7 +2084,7 @@ void G1CollectedHeap::increment_old_marking_cycles_completed(bool concurrent) {
// This notify_all() will ensure that a thread that called
// System.gc() with (with ExplicitGCInvokesConcurrent set or not)
// and it's waiting for a full GC to finish will be woken up. It is
- // waiting in VM_G1IncCollectionPause::doit_epilogue().
+ // waiting in VM_G1CollectForAllocation::doit_epilogue().
FullGCCount_lock->notify_all();
}
@@ -2175,13 +2112,12 @@ void G1CollectedHeap::collect(GCCause::Cause cause) {
// Schedule an initial-mark evacuation pause that will start a
// concurrent cycle. We're setting word_size to 0 which means that
// we are not requesting a post-GC allocation.
- VM_G1IncCollectionPause op(gc_count_before,
- 0, /* word_size */
- true, /* should_initiate_conc_mark */
- g1_policy()->max_pause_time_ms(),
- cause);
- op.set_allocation_context(AllocationContext::current());
-
+ VM_G1CollectForAllocation op(0, /* word_size */
+ gc_count_before,
+ cause,
+ true, /* should_initiate_conc_mark */
+ g1_policy()->max_pause_time_ms(),
+ AllocationContext::current());
VMThread::execute(&op);
if (!op.pause_succeeded()) {
if (old_marking_count_before == _old_marking_cycles_started) {
@@ -2204,11 +2140,12 @@ void G1CollectedHeap::collect(GCCause::Cause cause) {
// Schedule a standard evacuation pause. We're setting word_size
// to 0 which means that we are not requesting a post-GC allocation.
- VM_G1IncCollectionPause op(gc_count_before,
- 0, /* word_size */
- false, /* should_initiate_conc_mark */
- g1_policy()->max_pause_time_ms(),
- cause);
+ VM_G1CollectForAllocation op(0, /* word_size */
+ gc_count_before,
+ cause,
+ false, /* should_initiate_conc_mark */
+ g1_policy()->max_pause_time_ms(),
+ AllocationContext::current());
VMThread::execute(&op);
} else {
// Schedule a Full GC.
@@ -2619,13 +2556,12 @@ HeapWord* G1CollectedHeap::do_collection_pause(size_t word_size,
bool* succeeded,
GCCause::Cause gc_cause) {
assert_heap_not_locked_and_not_at_safepoint();
- VM_G1IncCollectionPause op(gc_count_before,
- word_size,
- false, /* should_initiate_conc_mark */
- g1_policy()->max_pause_time_ms(),
- gc_cause);
-
- op.set_allocation_context(AllocationContext::current());
+ VM_G1CollectForAllocation op(word_size,
+ gc_count_before,
+ gc_cause,
+ false, /* should_initiate_conc_mark */
+ g1_policy()->max_pause_time_ms(),
+ AllocationContext::current());
VMThread::execute(&op);
HeapWord* result = op.result();
diff --git a/src/hotspot/share/gc/g1/g1CollectedHeap.hpp b/src/hotspot/share/gc/g1/g1CollectedHeap.hpp
index d268e2ef7be..ccf57f66dfa 100644
--- a/src/hotspot/share/gc/g1/g1CollectedHeap.hpp
+++ b/src/hotspot/share/gc/g1/g1CollectedHeap.hpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2001, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -125,7 +125,6 @@ class G1CollectedHeap : public CollectedHeap {
friend class VM_CollectForMetadataAllocation;
friend class VM_G1CollectForAllocation;
friend class VM_G1CollectFull;
- friend class VM_G1IncCollectionPause;
friend class VMStructs;
friend class MutatorAllocRegion;
friend class G1FullCollector;
@@ -454,35 +453,20 @@ protected:
virtual HeapWord* mem_allocate(size_t word_size,
bool* gc_overhead_limit_was_exceeded);
- // The following three methods take a gc_count_before_ret
- // parameter which is used to return the GC count if the method
- // returns NULL. Given that we are required to read the GC count
- // while holding the Heap_lock, and these paths will take the
- // Heap_lock at some point, it's easier to get them to read the GC
- // count while holding the Heap_lock before they return NULL instead
- // of the caller (namely: mem_allocate()) having to also take the
- // Heap_lock just to read the GC count.
-
// First-level mutator allocation attempt: try to allocate out of
// the mutator alloc region without taking the Heap_lock. This
// should only be used for non-humongous allocations.
- inline HeapWord* attempt_allocation(size_t word_size,
- uint* gc_count_before_ret,
- uint* gclocker_retry_count_ret);
+ inline HeapWord* attempt_allocation(size_t word_size);
// Second-level mutator allocation attempt: take the Heap_lock and
// retry the allocation attempt, potentially scheduling a GC
// pause. This should only be used for non-humongous allocations.
HeapWord* attempt_allocation_slow(size_t word_size,
- AllocationContext_t context,
- uint* gc_count_before_ret,
- uint* gclocker_retry_count_ret);
+ AllocationContext_t context);
// Takes the Heap_lock and attempts a humongous allocation. It can
// potentially schedule a GC pause.
- HeapWord* attempt_allocation_humongous(size_t word_size,
- uint* gc_count_before_ret,
- uint* gclocker_retry_count_ret);
+ HeapWord* attempt_allocation_humongous(size_t word_size);
// Allocation attempt that should be called during safepoints (e.g.,
// at the end of a successful GC). expect_null_mutator_alloc_region
@@ -1078,6 +1062,11 @@ public:
return _hrm.available() == 0;
}
+ // Returns whether there are any regions left in the heap for allocation.
+ bool has_regions_left_for_allocation() const {
+ return !is_maximal_no_gc() || num_free_regions() != 0;
+ }
+
// The current number of regions in the heap.
uint num_regions() const { return _hrm.length(); }
diff --git a/src/hotspot/share/gc/g1/g1OopClosures.inline.hpp b/src/hotspot/share/gc/g1/g1OopClosures.inline.hpp
index 383c5955f71..f57a9ffac96 100644
--- a/src/hotspot/share/gc/g1/g1OopClosures.inline.hpp
+++ b/src/hotspot/share/gc/g1/g1OopClosures.inline.hpp
@@ -33,6 +33,7 @@
#include "gc/g1/heapRegion.inline.hpp"
#include "gc/g1/heapRegionRemSet.hpp"
#include "memory/iterator.inline.hpp"
+#include "oops/access.inline.hpp"
#include "runtime/prefetch.inline.hpp"
template
@@ -87,13 +88,13 @@ inline void G1ScanEvacuatedObjClosure::do_oop_nv(T* p) {
template
inline void G1CMOopClosure::do_oop_nv(T* p) {
- oop obj = oopDesc::load_decode_heap_oop(p);
+ oop obj = RawAccess::oop_load(p);
_task->deal_with_reference(obj);
}
template
inline void G1RootRegionScanClosure::do_oop_nv(T* p) {
- T heap_oop = oopDesc::load_heap_oop(p);
+ T heap_oop = RawAccess::oop_load(p);
if (oopDesc::is_null(heap_oop)) {
return;
}
@@ -124,7 +125,7 @@ inline static void check_obj_during_refinement(T* p, oop const obj) {
template
inline void G1ConcurrentRefineOopClosure::do_oop_nv(T* p) {
- T o = oopDesc::load_heap_oop(p);
+ T o = RawAccess::oop_load(p);
if (oopDesc::is_null(o)) {
return;
}
diff --git a/src/hotspot/share/gc/g1/g1SATBCardTableModRefBS.inline.hpp b/src/hotspot/share/gc/g1/g1SATBCardTableModRefBS.inline.hpp
index 834d284fec9..980920c28d4 100644
--- a/src/hotspot/share/gc/g1/g1SATBCardTableModRefBS.inline.hpp
+++ b/src/hotspot/share/gc/g1/g1SATBCardTableModRefBS.inline.hpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -27,7 +27,6 @@
#include "gc/shared/accessBarrierSupport.inline.hpp"
#include "gc/g1/g1SATBCardTableModRefBS.hpp"
-#include "oops/oop.inline.hpp"
template
inline void G1SATBCardTableModRefBS::write_ref_field_pre(T* field) {
diff --git a/src/hotspot/share/gc/g1/vm_operations_g1.cpp b/src/hotspot/share/gc/g1/vm_operations_g1.cpp
index 148fe80e3ef..9c560ed7ed1 100644
--- a/src/hotspot/share/gc/g1/vm_operations_g1.cpp
+++ b/src/hotspot/share/gc/g1/vm_operations_g1.cpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2001, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -33,34 +33,21 @@
#include "gc/shared/isGCActiveMark.hpp"
#include "runtime/interfaceSupport.hpp"
-VM_G1CollectForAllocation::VM_G1CollectForAllocation(uint gc_count_before,
- size_t word_size)
- : VM_G1OperationWithAllocRequest(gc_count_before, word_size,
- GCCause::_allocation_failure) {
- guarantee(word_size != 0, "An allocation should always be requested with this operation.");
-}
-
-void VM_G1CollectForAllocation::doit() {
- G1CollectedHeap* g1h = G1CollectedHeap::heap();
- GCCauseSetter x(g1h, _gc_cause);
-
- _result = g1h->satisfy_failed_allocation(_word_size, allocation_context(), &_pause_succeeded);
- assert(_result == NULL || _pause_succeeded,
- "if we get back a result, the pause should have succeeded");
-}
-
void VM_G1CollectFull::doit() {
G1CollectedHeap* g1h = G1CollectedHeap::heap();
GCCauseSetter x(g1h, _gc_cause);
g1h->do_full_collection(false /* clear_all_soft_refs */);
}
-VM_G1IncCollectionPause::VM_G1IncCollectionPause(uint gc_count_before,
- size_t word_size,
- bool should_initiate_conc_mark,
- double target_pause_time_ms,
- GCCause::Cause gc_cause)
- : VM_G1OperationWithAllocRequest(gc_count_before, word_size, gc_cause),
+VM_G1CollectForAllocation::VM_G1CollectForAllocation(size_t word_size,
+ uint gc_count_before,
+ GCCause::Cause gc_cause,
+ bool should_initiate_conc_mark,
+ double target_pause_time_ms,
+ AllocationContext_t allocation_context)
+ : VM_CollectForAllocation(word_size, gc_count_before, gc_cause),
+ _pause_succeeded(false),
+ _allocation_context(allocation_context),
_should_initiate_conc_mark(should_initiate_conc_mark),
_target_pause_time_ms(target_pause_time_ms),
_should_retry_gc(false),
@@ -71,8 +58,8 @@ VM_G1IncCollectionPause::VM_G1IncCollectionPause(uint gc_count_before,
_gc_cause = gc_cause;
}
-bool VM_G1IncCollectionPause::doit_prologue() {
- bool res = VM_G1OperationWithAllocRequest::doit_prologue();
+bool VM_G1CollectForAllocation::doit_prologue() {
+ bool res = VM_CollectForAllocation::doit_prologue();
if (!res) {
if (_should_initiate_conc_mark) {
// The prologue can fail for a couple of reasons. The first is that another GC
@@ -87,7 +74,7 @@ bool VM_G1IncCollectionPause::doit_prologue() {
return res;
}
-void VM_G1IncCollectionPause::doit() {
+void VM_G1CollectForAllocation::doit() {
G1CollectedHeap* g1h = G1CollectedHeap::heap();
assert(!_should_initiate_conc_mark || g1h->should_do_concurrent_full_gc(_gc_cause),
"only a GC locker, a System.gc(), stats update, whitebox, or a hum allocation induced GC should start a cycle");
@@ -95,7 +82,7 @@ void VM_G1IncCollectionPause::doit() {
if (_word_size > 0) {
// An allocation has been requested. So, try to do that first.
_result = g1h->attempt_allocation_at_safepoint(_word_size,
- allocation_context(),
+ _allocation_context,
false /* expect_null_cur_alloc_region */);
if (_result != NULL) {
// If we can successfully allocate before we actually do the
@@ -144,27 +131,34 @@ void VM_G1IncCollectionPause::doit() {
}
}
- _pause_succeeded =
- g1h->do_collection_pause_at_safepoint(_target_pause_time_ms);
- if (_pause_succeeded && _word_size > 0) {
- // An allocation had been requested.
- _result = g1h->attempt_allocation_at_safepoint(_word_size,
- allocation_context(),
- true /* expect_null_cur_alloc_region */);
+ // Try a partial collection of some kind.
+ _pause_succeeded = g1h->do_collection_pause_at_safepoint(_target_pause_time_ms);
+
+ if (_pause_succeeded) {
+ if (_word_size > 0) {
+ // An allocation had been requested. Do it, eventually trying a stronger
+ // kind of GC.
+ _result = g1h->satisfy_failed_allocation(_word_size, _allocation_context, &_pause_succeeded);
+ } else if (!g1h->has_regions_left_for_allocation()) {
+ // There has been a request to perform a GC to free some space. We have no
+ // information on how much memory has been asked for. In case there are
+ // absolutely no regions left to allocate into, do a maximally compacting full GC.
+ log_info(gc, ergo)("Attempting maximally compacting collection");
+ _pause_succeeded = g1h->do_full_collection(false, /* explicit gc */
+ true /* clear_all_soft_refs */);
+ }
+ guarantee(_pause_succeeded, "Elevated collections during the safepoint must always succeed.");
} else {
assert(_result == NULL, "invariant");
- if (!_pause_succeeded) {
- // Another possible reason reason for the pause to not be successful
- // is that, again, the GC locker is active (and has become active
- // since the prologue was executed). In this case we should retry
- // the pause after waiting for the GC locker to become inactive.
- _should_retry_gc = true;
- }
+ // The only reason for the pause to not be successful is that, the GC locker is
+ // active (or has become active since the prologue was executed). In this case
+ // we should retry the pause after waiting for the GC locker to become inactive.
+ _should_retry_gc = true;
}
}
-void VM_G1IncCollectionPause::doit_epilogue() {
- VM_G1OperationWithAllocRequest::doit_epilogue();
+void VM_G1CollectForAllocation::doit_epilogue() {
+ VM_CollectForAllocation::doit_epilogue();
// If the pause was initiated by a System.gc() and
// +ExplicitGCInvokesConcurrent, we have to wait here for the cycle
diff --git a/src/hotspot/share/gc/g1/vm_operations_g1.hpp b/src/hotspot/share/gc/g1/vm_operations_g1.hpp
index 94844f72881..d05836007b6 100644
--- a/src/hotspot/share/gc/g1/vm_operations_g1.hpp
+++ b/src/hotspot/share/gc/g1/vm_operations_g1.hpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2001, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -32,26 +32,8 @@
// VM_operations for the G1 collector.
// VM_GC_Operation:
// - VM_CGC_Operation
+// - VM_G1CollectForAllocation
// - VM_G1CollectFull
-// - VM_G1OperationWithAllocRequest
-// - VM_G1CollectForAllocation
-// - VM_G1IncCollectionPause
-
-class VM_G1OperationWithAllocRequest : public VM_CollectForAllocation {
-protected:
- bool _pause_succeeded;
- AllocationContext_t _allocation_context;
-
-public:
- VM_G1OperationWithAllocRequest(uint gc_count_before,
- size_t word_size,
- GCCause::Cause gc_cause)
- : VM_CollectForAllocation(word_size, gc_count_before, gc_cause),
- _pause_succeeded(false) {}
- bool pause_succeeded() { return _pause_succeeded; }
- void set_allocation_context(AllocationContext_t context) { _allocation_context = context; }
- AllocationContext_t allocation_context() { return _allocation_context; }
-};
class VM_G1CollectFull: public VM_GC_Operation {
public:
@@ -62,41 +44,35 @@ public:
virtual VMOp_Type type() const { return VMOp_G1CollectFull; }
virtual void doit();
virtual const char* name() const {
- return "full garbage-first collection";
+ return "G1 Full collection";
}
};
-class VM_G1CollectForAllocation: public VM_G1OperationWithAllocRequest {
-public:
- VM_G1CollectForAllocation(uint gc_count_before,
- size_t word_size);
- virtual VMOp_Type type() const { return VMOp_G1CollectForAllocation; }
- virtual void doit();
- virtual const char* name() const {
- return "garbage-first collection to satisfy allocation";
- }
-};
-
-class VM_G1IncCollectionPause: public VM_G1OperationWithAllocRequest {
+class VM_G1CollectForAllocation: public VM_CollectForAllocation {
private:
+ bool _pause_succeeded;
+ AllocationContext_t _allocation_context;
+
bool _should_initiate_conc_mark;
bool _should_retry_gc;
double _target_pause_time_ms;
uint _old_marking_cycles_completed_before;
public:
- VM_G1IncCollectionPause(uint gc_count_before,
- size_t word_size,
- bool should_initiate_conc_mark,
- double target_pause_time_ms,
- GCCause::Cause gc_cause);
- virtual VMOp_Type type() const { return VMOp_G1IncCollectionPause; }
+ VM_G1CollectForAllocation(size_t word_size,
+ uint gc_count_before,
+ GCCause::Cause gc_cause,
+ bool should_initiate_conc_mark,
+ double target_pause_time_ms,
+ AllocationContext_t allocation_context);
+ virtual VMOp_Type type() const { return VMOp_G1CollectForAllocation; }
virtual bool doit_prologue();
virtual void doit();
virtual void doit_epilogue();
virtual const char* name() const {
- return "garbage-first incremental collection pause";
+ return "G1 collect for allocation";
}
bool should_retry_gc() const { return _should_retry_gc; }
+ bool pause_succeeded() { return _pause_succeeded; }
};
// Concurrent GC stop-the-world operations such as remark and cleanup;
diff --git a/src/hotspot/share/gc/shared/barrierSet.hpp b/src/hotspot/share/gc/shared/barrierSet.hpp
index 63eeca7f8f3..7e5b93364e4 100644
--- a/src/hotspot/share/gc/shared/barrierSet.hpp
+++ b/src/hotspot/share/gc/shared/barrierSet.hpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -147,9 +147,8 @@ public:
// 3) Provide specializations for BarrierSet::GetName and BarrierSet::GetType.
template
class AccessBarrier: protected RawAccessBarrier {
- protected:
+ private:
typedef RawAccessBarrier Raw;
- typedef typename BarrierSetT::template AccessBarrier CRTPAccessBarrier;
public:
// Primitive heap accesses. These accessors get resolved when
diff --git a/src/hotspot/share/jvmci/jvmciJavaClasses.hpp b/src/hotspot/share/jvmci/jvmciJavaClasses.hpp
index cf5953f9a72..eca9635ec87 100644
--- a/src/hotspot/share/jvmci/jvmciJavaClasses.hpp
+++ b/src/hotspot/share/jvmci/jvmciJavaClasses.hpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2011, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -351,7 +351,7 @@ class name : AllStatic {
static type name() { \
assert(klassName::klass() != NULL && klassName::klass()->is_linked(), "Class not yet linked: " #klassName); \
InstanceKlass* ik = klassName::klass(); \
- address addr = ik->static_field_addr(_##name##_offset - InstanceMirrorKlass::offset_of_static_fields()); \
+ address addr = ik->static_field_addr(_##name##_offset); \
oop result = HeapAccess<>::oop_load((HeapWord*)addr); \
return type(result); \
} \
@@ -359,7 +359,7 @@ class name : AllStatic {
assert(klassName::klass() != NULL && klassName::klass()->is_linked(), "Class not yet linked: " #klassName); \
assert(klassName::klass() != NULL, "Class not yet loaded: " #klassName); \
InstanceKlass* ik = klassName::klass(); \
- address addr = ik->static_field_addr(_##name##_offset - InstanceMirrorKlass::offset_of_static_fields()); \
+ address addr = ik->static_field_addr(_##name##_offset); \
HeapAccess<>::oop_store((HeapWord*)addr, x); \
}
#define STATIC_PRIMITIVE_FIELD(klassName, name, jtypename) \
@@ -367,13 +367,13 @@ class name : AllStatic {
static jtypename name() { \
assert(klassName::klass() != NULL && klassName::klass()->is_linked(), "Class not yet linked: " #klassName); \
InstanceKlass* ik = klassName::klass(); \
- address addr = ik->static_field_addr(_##name##_offset - InstanceMirrorKlass::offset_of_static_fields()); \
+ address addr = ik->static_field_addr(_##name##_offset); \
return HeapAccess<>::load((jtypename*)addr); \
} \
static void set_##name(jtypename x) { \
assert(klassName::klass() != NULL && klassName::klass()->is_linked(), "Class not yet linked: " #klassName); \
InstanceKlass* ik = klassName::klass(); \
- address addr = ik->static_field_addr(_##name##_offset - InstanceMirrorKlass::offset_of_static_fields()); \
+ address addr = ik->static_field_addr(_##name##_offset); \
HeapAccess<>::store((jtypename*)addr, x); \
}
diff --git a/src/hotspot/share/oops/access.hpp b/src/hotspot/share/oops/access.hpp
index 106919d9e8a..7a1842f8a25 100644
--- a/src/hotspot/share/oops/access.hpp
+++ b/src/hotspot/share/oops/access.hpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -342,7 +342,7 @@ class Access: public AllStatic {
template
static void verify_primitive_decorators() {
const DecoratorSet primitive_decorators = (AS_DECORATOR_MASK ^ AS_NO_KEEPALIVE) | IN_HEAP |
- IN_HEAP_ARRAY | MO_DECORATOR_MASK;
+ IN_HEAP_ARRAY;
verify_decorators();
}
@@ -350,7 +350,7 @@ class Access: public AllStatic {
static void verify_oop_decorators() {
const DecoratorSet oop_decorators = AS_DECORATOR_MASK | IN_DECORATOR_MASK |
(ON_DECORATOR_MASK ^ ON_UNKNOWN_OOP_REF) | // no unknown oop refs outside of the heap
- OOP_DECORATOR_MASK | MO_DECORATOR_MASK;
+ OOP_DECORATOR_MASK;
verify_decorators();
}
@@ -358,8 +358,7 @@ class Access: public AllStatic {
static void verify_heap_oop_decorators() {
const DecoratorSet heap_oop_decorators = AS_DECORATOR_MASK | ON_DECORATOR_MASK |
OOP_DECORATOR_MASK | (IN_DECORATOR_MASK ^
- (IN_ROOT ^ IN_CONCURRENT_ROOT)) | // no root accesses in the heap
- MO_DECORATOR_MASK;
+ (IN_ROOT | IN_CONCURRENT_ROOT)); // no root accesses in the heap
verify_decorators();
}
diff --git a/src/hotspot/share/oops/access.inline.hpp b/src/hotspot/share/oops/access.inline.hpp
index 36f709f08f5..aeadfbf58cd 100644
--- a/src/hotspot/share/oops/access.inline.hpp
+++ b/src/hotspot/share/oops/access.inline.hpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -491,11 +491,12 @@ namespace AccessInternal {
// not possible.
struct PreRuntimeDispatch: AllStatic {
template
- static bool can_hardwire_raw() {
- return !HasDecorator::value || // primitive access
- !HasDecorator::value || // don't care about compressed oops (oop* address)
- HasDecorator::value; // we can infer we use compressed oops (narrowOop* address)
- }
+ struct CanHardwireRaw: public IntegralConstant<
+ bool,
+ !HasDecorator::value || // primitive access
+ !HasDecorator::value || // don't care about compressed oops (oop* address)
+ HasDecorator::value> // we can infer we use compressed oops (narrowOop* address)
+ {};
static const DecoratorSet convert_compressed_oops = INTERNAL_RT_USE_COMPRESSED_OOPS | INTERNAL_CONVERT_COMPRESSED_OOP;
@@ -507,16 +508,21 @@ namespace AccessInternal {
template
inline static typename EnableIf<
- HasDecorator::value>::type
+ HasDecorator::value && CanHardwireRaw::value>::type
store(void* addr, T value) {
typedef RawAccessBarrier Raw;
- if (can_hardwire_raw()) {
- if (HasDecorator::value) {
- Raw::oop_store(addr, value);
- } else {
- Raw::store(addr, value);
- }
- } else if (UseCompressedOops) {
+ if (HasDecorator::value) {
+ Raw::oop_store(addr, value);
+ } else {
+ Raw::store(addr, value);
+ }
+ }
+
+ template
+ inline static typename EnableIf<
+ HasDecorator::value && !CanHardwireRaw::value>::type
+ store(void* addr, T value) {
+ if (UseCompressedOops) {
const DecoratorSet expanded_decorators = decorators | convert_compressed_oops;
PreRuntimeDispatch::store(addr, value);
} else {
@@ -558,16 +564,21 @@ namespace AccessInternal {
template
inline static typename EnableIf<
- HasDecorator::value, T>::type
+ HasDecorator::value && CanHardwireRaw::value, T>::type
load(void* addr) {
typedef RawAccessBarrier Raw;
- if (can_hardwire_raw()) {
- if (HasDecorator::value) {
- return Raw::template oop_load(addr);
- } else {
- return Raw::template load(addr);
- }
- } else if (UseCompressedOops) {
+ if (HasDecorator::value) {
+ return Raw::template oop_load(addr);
+ } else {
+ return Raw::template load(addr);
+ }
+ }
+
+ template
+ inline static typename EnableIf<
+ HasDecorator::value && !CanHardwireRaw::value, T>::type
+ load(void* addr) {
+ if (UseCompressedOops) {
const DecoratorSet expanded_decorators = decorators | convert_compressed_oops;
return PreRuntimeDispatch::load(addr);
} else {
@@ -609,16 +620,21 @@ namespace AccessInternal {
template
inline static typename EnableIf<
- HasDecorator::value, T>::type
+ HasDecorator::value && CanHardwireRaw::value, T>::type
atomic_cmpxchg(T new_value, void* addr, T compare_value) {
typedef RawAccessBarrier Raw;
- if (can_hardwire_raw()) {
- if (HasDecorator::value) {
- return Raw::oop_atomic_cmpxchg(new_value, addr, compare_value);
- } else {
- return Raw::atomic_cmpxchg(new_value, addr, compare_value);
- }
- } else if (UseCompressedOops) {
+ if (HasDecorator::value) {
+ return Raw::oop_atomic_cmpxchg(new_value, addr, compare_value);
+ } else {
+ return Raw::atomic_cmpxchg(new_value, addr, compare_value);
+ }
+ }
+
+ template
+ inline static typename EnableIf<
+ HasDecorator::value && !CanHardwireRaw::value, T>::type
+ atomic_cmpxchg(T new_value, void* addr, T compare_value) {
+ if (UseCompressedOops) {
const DecoratorSet expanded_decorators = decorators | convert_compressed_oops;
return PreRuntimeDispatch::atomic_cmpxchg(new_value, addr, compare_value);
} else {
@@ -661,16 +677,21 @@ namespace AccessInternal {
template
inline static typename EnableIf<
- HasDecorator::value, T>::type
+ HasDecorator::value && CanHardwireRaw::value, T>::type
atomic_xchg(T new_value, void* addr) {
typedef RawAccessBarrier Raw;
- if (can_hardwire_raw()) {
- if (HasDecorator::value) {
- return Raw::oop_atomic_xchg(new_value, addr);
- } else {
- return Raw::atomic_xchg(new_value, addr);
- }
- } else if (UseCompressedOops) {
+ if (HasDecorator::value) {
+ return Raw::oop_atomic_xchg(new_value, addr);
+ } else {
+ return Raw::atomic_xchg(new_value, addr);
+ }
+ }
+
+ template
+ inline static typename EnableIf<
+ HasDecorator::value && !CanHardwireRaw::value, T>::type
+ atomic_xchg(T new_value, void* addr) {
+ if (UseCompressedOops) {
const DecoratorSet expanded_decorators = decorators | convert_compressed_oops;
return PreRuntimeDispatch::atomic_xchg(new_value, addr);
} else {
@@ -797,6 +818,13 @@ namespace AccessInternal {
PreRuntimeDispatch::store(addr, value);
}
+ template
+ inline void store_reduce_types(narrowOop* addr, narrowOop value) {
+ const DecoratorSet expanded_decorators = decorators | INTERNAL_CONVERT_COMPRESSED_OOP |
+ INTERNAL_RT_USE_COMPRESSED_OOPS;
+ PreRuntimeDispatch::store(addr, value);
+ }
+
template
inline void store_reduce_types(HeapWord* addr, oop value) {
const DecoratorSet expanded_decorators = decorators | INTERNAL_CONVERT_COMPRESSED_OOP;
@@ -816,7 +844,16 @@ namespace AccessInternal {
}
template
- inline oop atomic_cmpxchg_reduce_types(oop new_value, HeapWord* addr, oop compare_value) {
+ inline narrowOop atomic_cmpxchg_reduce_types(narrowOop new_value, narrowOop* addr, narrowOop compare_value) {
+ const DecoratorSet expanded_decorators = decorators | INTERNAL_CONVERT_COMPRESSED_OOP |
+ INTERNAL_RT_USE_COMPRESSED_OOPS;
+ return PreRuntimeDispatch::atomic_cmpxchg(new_value, addr, compare_value);
+ }
+
+ template
+ inline oop atomic_cmpxchg_reduce_types(oop new_value,
+ HeapWord* addr,
+ oop compare_value) {
const DecoratorSet expanded_decorators = decorators | INTERNAL_CONVERT_COMPRESSED_OOP;
return PreRuntimeDispatch::atomic_cmpxchg(new_value, addr, compare_value);
}
@@ -834,6 +871,13 @@ namespace AccessInternal {
return PreRuntimeDispatch::atomic_xchg(new_value, addr);
}
+ template
+ inline narrowOop atomic_xchg_reduce_types(narrowOop new_value, narrowOop* addr) {
+ const DecoratorSet expanded_decorators = decorators | INTERNAL_CONVERT_COMPRESSED_OOP |
+ INTERNAL_RT_USE_COMPRESSED_OOPS;
+ return PreRuntimeDispatch::atomic_xchg(new_value, addr);
+ }
+
template
inline oop atomic_xchg_reduce_types(oop new_value, HeapWord* addr) {
const DecoratorSet expanded_decorators = decorators | INTERNAL_CONVERT_COMPRESSED_OOP;
@@ -846,9 +890,10 @@ namespace AccessInternal {
}
template
- inline oop load_reduce_types(narrowOop* addr) {
- const DecoratorSet expanded_decorators = decorators | INTERNAL_CONVERT_COMPRESSED_OOP | INTERNAL_RT_USE_COMPRESSED_OOPS;
- return PreRuntimeDispatch::load(addr);
+ inline typename OopOrNarrowOop::type load_reduce_types(narrowOop* addr) {
+ const DecoratorSet expanded_decorators = decorators | INTERNAL_CONVERT_COMPRESSED_OOP |
+ INTERNAL_RT_USE_COMPRESSED_OOPS;
+ return PreRuntimeDispatch::load::type>(addr);
}
template
diff --git a/src/hotspot/share/oops/accessBackend.hpp b/src/hotspot/share/oops/accessBackend.hpp
index d5829376560..cd37c9f8855 100644
--- a/src/hotspot/share/oops/accessBackend.hpp
+++ b/src/hotspot/share/oops/accessBackend.hpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -28,6 +28,7 @@
#include "metaprogramming/conditional.hpp"
#include "metaprogramming/enableIf.hpp"
#include "metaprogramming/integralConstant.hpp"
+#include "metaprogramming/isSame.hpp"
#include "utilities/debug.hpp"
#include "utilities/globalDefinitions.hpp"
@@ -54,11 +55,11 @@ namespace AccessInternal {
BARRIER_CLONE
};
- template
+ template
struct MustConvertCompressedOop: public IntegralConstant::value &&
- HasDecorator::value &&
- HasDecorator::value> {};
+ IsSame::type, narrowOop>::value &&
+ IsSame::value> {};
// This metafunction returns an appropriate oop type if the value is oop-like
// and otherwise returns the same type T.
@@ -172,13 +173,13 @@ protected:
// Only encode if INTERNAL_VALUE_IS_OOP
template
static inline typename EnableIf<
- AccessInternal::MustConvertCompressedOop::value,
+ AccessInternal::MustConvertCompressedOop::value,
typename HeapOopType::type>::type
encode_internal(T value);
template
static inline typename EnableIf<
- !AccessInternal::MustConvertCompressedOop::value, T>::type
+ !AccessInternal::MustConvertCompressedOop::value, T>::type
encode_internal(T value) {
return value;
}
@@ -192,12 +193,12 @@ protected:
// Only decode if INTERNAL_VALUE_IS_OOP
template
static inline typename EnableIf<
- AccessInternal::MustConvertCompressedOop::value, T>::type
+ AccessInternal::MustConvertCompressedOop::value, T>::type
decode_internal(typename HeapOopType::type value);
template
static inline typename EnableIf<
- !AccessInternal::MustConvertCompressedOop::value, T>::type
+ !AccessInternal::MustConvertCompressedOop::value, T>::type
decode_internal(T value) {
return value;
}
diff --git a/src/hotspot/share/oops/accessBackend.inline.hpp b/src/hotspot/share/oops/accessBackend.inline.hpp
index 1d7890271ce..4ba8f506ef7 100644
--- a/src/hotspot/share/oops/accessBackend.inline.hpp
+++ b/src/hotspot/share/oops/accessBackend.inline.hpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -32,7 +32,7 @@
template
template
inline typename EnableIf<
- AccessInternal::MustConvertCompressedOop::value, T>::type
+ AccessInternal::MustConvertCompressedOop::value, T>::type
RawAccessBarrier::decode_internal(typename HeapOopType::type value) {
if (HasDecorator::value) {
return oopDesc::decode_heap_oop_not_null(value);
@@ -44,7 +44,7 @@ RawAccessBarrier::decode_internal(typename HeapOopType:
template
template
inline typename EnableIf<
- AccessInternal::MustConvertCompressedOop::value,
+ AccessInternal::MustConvertCompressedOop::value,
typename HeapOopType::type>::type
RawAccessBarrier::encode_internal(T value) {
if (HasDecorator::value) {
diff --git a/src/hotspot/share/oops/instanceKlass.cpp b/src/hotspot/share/oops/instanceKlass.cpp
index 4888d180e13..201f2988186 100644
--- a/src/hotspot/share/oops/instanceKlass.cpp
+++ b/src/hotspot/share/oops/instanceKlass.cpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -2265,7 +2265,8 @@ void InstanceKlass::set_source_debug_extension(const char* array, int length) {
}
address InstanceKlass::static_field_addr(int offset) {
- return (address)(offset + InstanceMirrorKlass::offset_of_static_fields() + cast_from_oop(java_mirror()));
+ assert(offset >= InstanceMirrorKlass::offset_of_static_fields(), "has already been adjusted");
+ return (address)(offset + cast_from_oop(java_mirror()));
}
@@ -3421,6 +3422,15 @@ void JNIid::verify(Klass* holder) {
}
}
+oop InstanceKlass::klass_holder_phantom() {
+ oop* addr;
+ if (is_anonymous()) {
+ addr = _java_mirror.ptr_raw();
+ } else {
+ addr = &class_loader_data()->_class_loader;
+ }
+ return RootAccess::oop_load(addr);
+}
#ifdef ASSERT
void InstanceKlass::set_init_state(ClassState state) {
diff --git a/src/hotspot/share/oops/instanceKlass.hpp b/src/hotspot/share/oops/instanceKlass.hpp
index fb860b7c616..58656736cdf 100644
--- a/src/hotspot/share/oops/instanceKlass.hpp
+++ b/src/hotspot/share/oops/instanceKlass.hpp
@@ -645,6 +645,11 @@ class InstanceKlass: public Klass {
return is_anonymous() ? java_mirror() : class_loader();
}
+ // Load the klass_holder as a phantom. This is useful when a weak Klass
+ // pointer has been "peeked" and then must be kept alive before it may
+ // be used safely.
+ oop klass_holder_phantom();
+
bool is_contended() const {
return (_misc_flags & _misc_is_contended) != 0;
}
diff --git a/src/hotspot/share/oops/oop.hpp b/src/hotspot/share/oops/oop.hpp
index 0e9384c6291..9f7f0c0a0ea 100644
--- a/src/hotspot/share/oops/oop.hpp
+++ b/src/hotspot/share/oops/oop.hpp
@@ -28,6 +28,7 @@
#include "gc/shared/specialized_oop_closures.hpp"
#include "memory/iterator.hpp"
#include "memory/memRegion.hpp"
+#include "oops/access.hpp"
#include "oops/metadata.hpp"
#include "utilities/macros.hpp"
@@ -178,6 +179,8 @@ class oopDesc {
static inline void encode_store_heap_oop(oop* p, oop v);
// Access to fields in a instanceOop through these methods.
+ template
+ oop obj_field_access(int offset) const;
oop obj_field(int offset) const;
void obj_field_put(int offset, oop value);
void obj_field_put_raw(int offset, oop value);
diff --git a/src/hotspot/share/oops/oop.inline.hpp b/src/hotspot/share/oops/oop.inline.hpp
index a8b8d37f345..6b28c4ddb1b 100644
--- a/src/hotspot/share/oops/oop.inline.hpp
+++ b/src/hotspot/share/oops/oop.inline.hpp
@@ -326,7 +326,10 @@ void oopDesc::encode_store_heap_oop(narrowOop* p, oop v) {
*p = encode_heap_oop(v);
}
+template
+inline oop oopDesc::obj_field_access(int offset) const { return HeapAccess::oop_load_at(as_oop(), offset); }
inline oop oopDesc::obj_field(int offset) const { return HeapAccess<>::oop_load_at(as_oop(), offset); }
+
inline void oopDesc::obj_field_put(int offset, oop value) { HeapAccess<>::oop_store_at(as_oop(), offset, value); }
inline jbyte oopDesc::byte_field(int offset) const { return HeapAccess<>::load_at(as_oop(), offset); }
diff --git a/src/hotspot/share/prims/jvmtiTagMap.cpp b/src/hotspot/share/prims/jvmtiTagMap.cpp
index 6ea720a1e44..78272c45e4d 100644
--- a/src/hotspot/share/prims/jvmtiTagMap.cpp
+++ b/src/hotspot/share/prims/jvmtiTagMap.cpp
@@ -30,6 +30,7 @@
#include "code/codeCache.hpp"
#include "jvmtifiles/jvmtiEnv.hpp"
#include "memory/resourceArea.hpp"
+#include "oops/access.inline.hpp"
#include "oops/instanceMirrorKlass.hpp"
#include "oops/objArrayKlass.hpp"
#include "oops/objArrayOop.inline.hpp"
@@ -52,10 +53,6 @@
#include "runtime/vm_operations.hpp"
#include "services/serviceUtil.hpp"
#include "utilities/macros.hpp"
-#if INCLUDE_ALL_GCS
-#include "gc/g1/g1SATBCardTableModRefBS.hpp"
-#include "gc/parallel/parallelScavengeHeap.hpp"
-#endif // INCLUDE_ALL_GCS
// JvmtiTagHashmapEntry
//
@@ -78,22 +75,31 @@ class JvmtiTagHashmapEntry : public CHeapObj {
}
// constructor
- JvmtiTagHashmapEntry(oop object, jlong tag) { init(object, tag); }
+ JvmtiTagHashmapEntry(oop object, jlong tag) { init(object, tag); }
public:
// accessor methods
- inline oop object() const { return _object; }
- inline oop* object_addr() { return &_object; }
- inline jlong tag() const { return _tag; }
+ inline oop* object_addr() { return &_object; }
+ inline oop object() { return RootAccess::oop_load(object_addr()); }
+ // Peek at the object without keeping it alive. The returned object must be
+ // kept alive using a normal access if it leaks out of a thread transition from VM.
+ inline oop object_peek() {
+ return RootAccess::oop_load(object_addr());
+ }
+ inline jlong tag() const { return _tag; }
inline void set_tag(jlong tag) {
assert(tag != 0, "can't be zero");
_tag = tag;
}
- inline JvmtiTagHashmapEntry* next() const { return _next; }
- inline void set_next(JvmtiTagHashmapEntry* next) { _next = next; }
+ inline bool equals(oop object) {
+ return object == object_peek();
+ }
+
+ inline JvmtiTagHashmapEntry* next() const { return _next; }
+ inline void set_next(JvmtiTagHashmapEntry* next) { _next = next; }
};
@@ -211,7 +217,7 @@ class JvmtiTagHashmap : public CHeapObj {
JvmtiTagHashmapEntry* entry = _table[i];
while (entry != NULL) {
JvmtiTagHashmapEntry* next = entry->next();
- oop key = entry->object();
+ oop key = entry->object_peek();
assert(key != NULL, "jni weak reference cleared!!");
unsigned int h = hash(key, new_size);
JvmtiTagHashmapEntry* anchor = new_table[h];
@@ -304,7 +310,7 @@ class JvmtiTagHashmap : public CHeapObj {
unsigned int h = hash(key);
JvmtiTagHashmapEntry* entry = _table[h];
while (entry != NULL) {
- if (entry->object() == key) {
+ if (entry->equals(key)) {
return entry;
}
entry = entry->next();
@@ -345,7 +351,7 @@ class JvmtiTagHashmap : public CHeapObj {
JvmtiTagHashmapEntry* entry = _table[h];
JvmtiTagHashmapEntry* prev = NULL;
while (entry != NULL) {
- if (key == entry->object()) {
+ if (entry->equals(key)) {
break;
}
prev = entry;
@@ -1535,16 +1541,12 @@ class TagObjectCollector : public JvmtiTagHashmapEntryClosure {
void do_entry(JvmtiTagHashmapEntry* entry) {
for (int i=0; i<_tag_count; i++) {
if (_tags[i] == entry->tag()) {
+ // The reference in this tag map could be the only (implicitly weak)
+ // reference to that object. If we hand it out, we need to keep it live wrt
+ // SATB marking similar to other j.l.ref.Reference referents. This is
+ // achieved by using a phantom load in the object() accessor.
oop o = entry->object();
assert(o != NULL && Universe::heap()->is_in_reserved(o), "sanity check");
-#if INCLUDE_ALL_GCS
- if (UseG1GC) {
- // The reference in this tag map could be the only (implicitly weak)
- // reference to that object. If we hand it out, we need to keep it live wrt
- // SATB marking similar to other j.l.ref.Reference referents.
- G1SATBCardTableModRefBS::enqueue(o);
- }
-#endif
jobject ref = JNIHandles::make_local(JavaThread::current(), o);
_object_results->append(ref);
_tag_results->append((uint64_t)entry->tag());
@@ -3363,10 +3365,8 @@ void JvmtiTagMap::do_weak_oops(BoolObjectClosure* is_alive, OopClosure* f) {
while (entry != NULL) {
JvmtiTagHashmapEntry* next = entry->next();
- oop* obj = entry->object_addr();
-
// has object been GC'ed
- if (!is_alive->do_object_b(entry->object())) {
+ if (!is_alive->do_object_b(entry->object_peek())) {
// grab the tag
jlong tag = entry->tag();
guarantee(tag != 0, "checking");
@@ -3384,7 +3384,7 @@ void JvmtiTagMap::do_weak_oops(BoolObjectClosure* is_alive, OopClosure* f) {
++freed;
} else {
f->do_oop(entry->object_addr());
- oop new_oop = entry->object();
+ oop new_oop = entry->object_peek();
// if the object has moved then re-hash it and move its
// entry to its new location.
@@ -3418,7 +3418,7 @@ void JvmtiTagMap::do_weak_oops(BoolObjectClosure* is_alive, OopClosure* f) {
// Re-add all the entries which were kept aside
while (delayed_add != NULL) {
JvmtiTagHashmapEntry* next = delayed_add->next();
- unsigned int pos = JvmtiTagHashmap::hash(delayed_add->object(), size);
+ unsigned int pos = JvmtiTagHashmap::hash(delayed_add->object_peek(), size);
delayed_add->set_next(table[pos]);
table[pos] = delayed_add;
delayed_add = next;
diff --git a/src/hotspot/share/prims/resolvedMethodTable.cpp b/src/hotspot/share/prims/resolvedMethodTable.cpp
index 095fbb942c3..40cb4f85678 100644
--- a/src/hotspot/share/prims/resolvedMethodTable.cpp
+++ b/src/hotspot/share/prims/resolvedMethodTable.cpp
@@ -25,6 +25,7 @@
#include "precompiled.hpp"
#include "gc/shared/gcLocker.hpp"
#include "memory/allocation.hpp"
+#include "oops/access.inline.hpp"
#include "oops/oop.inline.hpp"
#include "oops/method.hpp"
#include "oops/symbol.hpp"
@@ -33,24 +34,39 @@
#include "runtime/mutexLocker.hpp"
#include "utilities/hashtable.inline.hpp"
#include "utilities/macros.hpp"
-#if INCLUDE_ALL_GCS
-#include "gc/g1/g1SATBCardTableModRefBS.hpp"
-#endif
+oop ResolvedMethodEntry::object() {
+ return RootAccess::oop_load(literal_addr());
+}
+
+oop ResolvedMethodEntry::object_no_keepalive() {
+ // The AS_NO_KEEPALIVE peeks at the oop without keeping it alive.
+ // This is dangerous in general but is okay if the loaded oop does
+ // not leak out past a thread transition where a safepoint can happen.
+ // A subsequent oop_load without AS_NO_KEEPALIVE (the object() accessor)
+ // keeps the oop alive before doing so.
+ return RootAccess::oop_load(literal_addr());
+}
+
ResolvedMethodTable::ResolvedMethodTable()
: Hashtable(_table_size, sizeof(ResolvedMethodEntry)) { }
oop ResolvedMethodTable::lookup(int index, unsigned int hash, Method* method) {
for (ResolvedMethodEntry* p = bucket(index); p != NULL; p = p->next()) {
if (p->hash() == hash) {
- oop target = p->literal();
+
+ // Peek the object to check if it is the right target.
+ oop target = p->object_no_keepalive();
+
// The method is in the table as a target already
if (java_lang_invoke_ResolvedMethodName::vmtarget(target) == method) {
ResourceMark rm;
log_debug(membername, table) ("ResolvedMethod entry found for %s index %d",
method->name_and_sig_as_C_string(), index);
- return target;
+ // The object() accessor makes sure the target object is kept alive before
+ // leaking out.
+ return p->object();
}
}
}
@@ -70,18 +86,6 @@ oop ResolvedMethodTable::lookup(Method* method) {
return lookup(index, hash, method);
}
-// Tell the GC that this oop was looked up in the table
-static void ensure_oop_alive(oop mname) {
- // A lookup in the ResolvedMethodTable could return an object that was previously
- // considered dead. The SATB part of G1 needs to get notified about this
- // potential resurrection, otherwise the marking might not find the object.
-#if INCLUDE_ALL_GCS
- if (UseG1GC && mname != NULL) {
- G1SATBCardTableModRefBS::enqueue(mname);
- }
-#endif
-}
-
oop ResolvedMethodTable::basic_add(Method* method, oop rmethod_name) {
assert_locked_or_safepoint(ResolvedMethodTable_lock);
@@ -91,7 +95,6 @@ oop ResolvedMethodTable::basic_add(Method* method, oop rmethod_name) {
// One was added while aquiring the lock
oop entry = lookup(index, hash, method);
if (entry != NULL) {
- ensure_oop_alive(entry);
return entry;
}
@@ -100,14 +103,13 @@ oop ResolvedMethodTable::basic_add(Method* method, oop rmethod_name) {
ResourceMark rm;
log_debug(membername, table) ("ResolvedMethod entry added for %s index %d",
method->name_and_sig_as_C_string(), index);
- return p->literal();
+ return rmethod_name;
}
ResolvedMethodTable* ResolvedMethodTable::_the_table = NULL;
oop ResolvedMethodTable::find_method(Method* method) {
oop entry = _the_table->lookup(method);
- ensure_oop_alive(entry);
return entry;
}
@@ -147,12 +149,12 @@ void ResolvedMethodTable::unlink(BoolObjectClosure* is_alive) {
ResolvedMethodEntry* entry = _the_table->bucket(i);
while (entry != NULL) {
_oops_counted++;
- if (is_alive->do_object_b(entry->literal())) {
+ if (is_alive->do_object_b(entry->object_no_keepalive())) {
p = entry->next_addr();
} else {
_oops_removed++;
if (log_is_enabled(Debug, membername, table)) {
- Method* m = (Method*)java_lang_invoke_ResolvedMethodName::vmtarget(entry->literal());
+ Method* m = (Method*)java_lang_invoke_ResolvedMethodName::vmtarget(entry->object_no_keepalive());
ResourceMark rm;
log_debug(membername, table) ("ResolvedMethod entry removed for %s index %d",
m->name_and_sig_as_C_string(), i);
@@ -185,7 +187,7 @@ void ResolvedMethodTable::print() {
ResolvedMethodEntry* entry = bucket(i);
while (entry != NULL) {
tty->print("%d : ", i);
- oop rmethod_name = entry->literal();
+ oop rmethod_name = entry->object_no_keepalive();
rmethod_name->print();
Method* m = (Method*)java_lang_invoke_ResolvedMethodName::vmtarget(rmethod_name);
m->print();
@@ -203,8 +205,7 @@ void ResolvedMethodTable::adjust_method_entries(bool * trace_name_printed) {
for (int i = 0; i < _the_table->table_size(); ++i) {
ResolvedMethodEntry* entry = _the_table->bucket(i);
while (entry != NULL) {
-
- oop mem_name = entry->literal();
+ oop mem_name = entry->object_no_keepalive();
Method* old_method = (Method*)java_lang_invoke_ResolvedMethodName::vmtarget(mem_name);
if (old_method->is_old()) {
diff --git a/src/hotspot/share/prims/resolvedMethodTable.hpp b/src/hotspot/share/prims/resolvedMethodTable.hpp
index 122040b5132..ba863fc3590 100644
--- a/src/hotspot/share/prims/resolvedMethodTable.hpp
+++ b/src/hotspot/share/prims/resolvedMethodTable.hpp
@@ -44,6 +44,9 @@ class ResolvedMethodEntry : public HashtableEntry {
return (ResolvedMethodEntry**)HashtableEntry::next_addr();
}
+ oop object();
+ oop object_no_keepalive();
+
void print_on(outputStream* st) const;
};
diff --git a/src/hotspot/share/runtime/arguments.cpp b/src/hotspot/share/runtime/arguments.cpp
index 8509dcb7a27..7decb80ccde 100644
--- a/src/hotspot/share/runtime/arguments.cpp
+++ b/src/hotspot/share/runtime/arguments.cpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -527,6 +527,7 @@ static SpecialFlag const special_jvm_flags[] = {
{ "ConvertSleepToYield", JDK_Version::jdk(9), JDK_Version::jdk(10), JDK_Version::jdk(11) },
{ "ConvertYieldToSleep", JDK_Version::jdk(9), JDK_Version::jdk(10), JDK_Version::jdk(11) },
{ "MinSleepInterval", JDK_Version::jdk(9), JDK_Version::jdk(10), JDK_Version::jdk(11) },
+ { "CheckAssertionStatusDirectives",JDK_Version::undefined(), JDK_Version::jdk(11), JDK_Version::jdk(12) },
{ "PermSize", JDK_Version::undefined(), JDK_Version::jdk(8), JDK_Version::undefined() },
{ "MaxPermSize", JDK_Version::undefined(), JDK_Version::jdk(8), JDK_Version::undefined() },
{ "SharedReadWriteSize", JDK_Version::undefined(), JDK_Version::jdk(10), JDK_Version::undefined() },
diff --git a/src/hotspot/share/runtime/globals.hpp b/src/hotspot/share/runtime/globals.hpp
index ad4b27a3b0b..6f17cd18bfe 100644
--- a/src/hotspot/share/runtime/globals.hpp
+++ b/src/hotspot/share/runtime/globals.hpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -893,9 +893,6 @@ public:
develop(bool, TraceJavaAssertions, false, \
"Trace java language assertions") \
\
- notproduct(bool, CheckAssertionStatusDirectives, false, \
- "Temporary - see javaClasses.cpp") \
- \
notproduct(bool, PrintMallocFree, false, \
"Trace calls to C heap malloc/free allocation") \
\
diff --git a/src/hotspot/share/runtime/init.cpp b/src/hotspot/share/runtime/init.cpp
index ff31ac9da77..d995a2fbf10 100644
--- a/src/hotspot/share/runtime/init.cpp
+++ b/src/hotspot/share/runtime/init.cpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -131,6 +131,7 @@ jint init_globals() {
InterfaceSupport_init();
SharedRuntime::generate_stubs();
universe2_init(); // dependent on codeCache_init and stubRoutines_init1
+ javaClasses_init();// must happen after vtable initialization, before referenceProcessor_init
referenceProcessor_init();
jni_handles_init();
#if INCLUDE_VM_STRUCTS
@@ -150,7 +151,6 @@ jint init_globals() {
if (!universe_post_init()) {
return JNI_ERR;
}
- javaClasses_init(); // must happen after vtable initialization
stubRoutines_init2(); // note: StubRoutines need 2-phase init
MethodHandles::generate_adapters();
diff --git a/src/hotspot/share/runtime/os.hpp b/src/hotspot/share/runtime/os.hpp
index 83b24f574ed..8dc6735af28 100644
--- a/src/hotspot/share/runtime/os.hpp
+++ b/src/hotspot/share/runtime/os.hpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -778,7 +778,6 @@ class os: AllStatic {
static void* signal(int signal_number, void* handler);
static void signal_raise(int signal_number);
static int signal_wait();
- static int signal_lookup();
static void* user_handler();
static void terminate_signal_thread();
static int sigexitnum_pd();
diff --git a/src/hotspot/share/runtime/vm_operations.hpp b/src/hotspot/share/runtime/vm_operations.hpp
index 145337a8d01..3d81e71aefd 100644
--- a/src/hotspot/share/runtime/vm_operations.hpp
+++ b/src/hotspot/share/runtime/vm_operations.hpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -67,9 +67,8 @@
template(CGC_Operation) \
template(CMS_Initial_Mark) \
template(CMS_Final_Remark) \
- template(G1CollectFull) \
template(G1CollectForAllocation) \
- template(G1IncCollectionPause) \
+ template(G1CollectFull) \
template(HandshakeOneThread) \
template(HandshakeAllThreads) \
template(HandshakeFallback) \
diff --git a/src/hotspot/share/utilities/vmError.cpp b/src/hotspot/share/utilities/vmError.cpp
index 8d127605e13..9d1e7ded38d 100644
--- a/src/hotspot/share/utilities/vmError.cpp
+++ b/src/hotspot/share/utilities/vmError.cpp
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -243,11 +243,12 @@ void VMError::print_native_stack(outputStream* st, frame fr, Thread* t, char* bu
RegisterMap map((JavaThread*)t, false); // No update
fr = fr.sender(&map);
} else {
+ // is_first_C_frame() does only simple checks for frame pointer,
+ // it will pass if java compiled code has a pointer in EBP.
+ if (os::is_first_C_frame(&fr)) break;
fr = os::get_sender_for_C_frame(&fr);
}
} else {
- // is_first_C_frame() does only simple checks for frame pointer,
- // it will pass if java compiled code has a pointer in EBP.
if (os::is_first_C_frame(&fr)) break;
fr = os::get_sender_for_C_frame(&fr);
}
diff --git a/src/jdk.attach/share/classes/sun/tools/attach/HotSpotVirtualMachine.java b/src/jdk.attach/share/classes/sun/tools/attach/HotSpotVirtualMachine.java
index a475bf42a38..8bccd6bad9d 100644
--- a/src/jdk.attach/share/classes/sun/tools/attach/HotSpotVirtualMachine.java
+++ b/src/jdk.attach/share/classes/sun/tools/attach/HotSpotVirtualMachine.java
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -86,6 +86,10 @@ public abstract class HotSpotVirtualMachine extends VirtualMachine {
private void loadAgentLibrary(String agentLibrary, boolean isAbsolute, String options)
throws AgentLoadException, AgentInitializationException, IOException
{
+ if (agentLibrary == null) {
+ throw new NullPointerException("agentLibrary cannot be null");
+ }
+
String msgPrefix = "return code: ";
InputStream in = execute("load",
agentLibrary,
@@ -131,6 +135,10 @@ public abstract class HotSpotVirtualMachine extends VirtualMachine {
public void loadAgent(String agent, String options)
throws AgentLoadException, AgentInitializationException, IOException
{
+ if (agent == null) {
+ throw new NullPointerException("agent cannot be null");
+ }
+
String args = agent;
if (options != null) {
args = args + "=" + options;
diff --git a/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/CommandProcessor.java b/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/CommandProcessor.java
index 83a9b05479f..6bed5311602 100644
--- a/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/CommandProcessor.java
+++ b/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/CommandProcessor.java
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -1607,7 +1607,9 @@ public class CommandProcessor {
if (!all) return;
}
}
- out.println("Couldn't find thread " + name);
+ if (!all) {
+ out.println("Couldn't find thread " + name);
+ }
}
}
},
diff --git a/src/utils/LogCompilation/src/main/java/com/sun/hotspot/tools/compiler/CallSite.java b/src/utils/LogCompilation/src/main/java/com/sun/hotspot/tools/compiler/CallSite.java
index 650d58a9e3a..4e6b12c3937 100644
--- a/src/utils/LogCompilation/src/main/java/com/sun/hotspot/tools/compiler/CallSite.java
+++ b/src/utils/LogCompilation/src/main/java/com/sun/hotspot/tools/compiler/CallSite.java
@@ -104,6 +104,11 @@ public class CallSite {
*/
private List traps;
+ /**
+ * The name of the intrinsic at this call site.
+ */
+ private String intrinsicName;
+
/**
* Default constructor: used to create an instance that represents the top
* scope of a compilation.
@@ -179,6 +184,7 @@ public class CallSite {
} else {
stream.print(" @ " + getBci() + " " + m + " " + getReason());
}
+ stream.print(getIntrinsicOrEmptyString());
stream.printf(" (end time: %6.4f", getTimeStamp());
if (getEndNodes() > 0) {
stream.printf(" nodes: %d live: %d", getEndNodes(), getEndLiveNodes());
@@ -368,4 +374,19 @@ public class CallSite {
public void setInlineId(long inlineId) {
this.inlineId = inlineId;
}
+
+ public String getIntrinsicName() {
+ return intrinsicName;
+ }
+
+ public void setIntrinsicName(String name) {
+ this.intrinsicName = name;
+ }
+
+ public String getIntrinsicOrEmptyString() {
+ if (intrinsicName != null) {
+ return " (intrinsic: " + getIntrinsicName() + ")";
+ }
+ return "";
+ }
}
diff --git a/src/utils/LogCompilation/src/main/java/com/sun/hotspot/tools/compiler/LogParser.java b/src/utils/LogCompilation/src/main/java/com/sun/hotspot/tools/compiler/LogParser.java
index 85ce379e16f..561c932fefe 100644
--- a/src/utils/LogCompilation/src/main/java/com/sun/hotspot/tools/compiler/LogParser.java
+++ b/src/utils/LogCompilation/src/main/java/com/sun/hotspot/tools/compiler/LogParser.java
@@ -975,6 +975,12 @@ public class LogParser extends DefaultHandler implements ErrorHandler {
// track of it but don't add it to the list yet.
methodHandleSite = site;
}
+ } else if (qname.equals("intrinsic")) {
+ String id = atts.getValue("id");
+ assert id != null : "intrinsic id is null";
+ CallSite cs = (site != null) ? site : scopes.peek();
+ assert cs != null : "no CallSite?";
+ cs.setIntrinsicName(id);
} else if (qname.equals("regalloc")) {
compile.setAttempts(Integer.parseInt(search(atts, "attempts")));
} else if (qname.equals("inline_fail")) {
diff --git a/test/hotspot/jtreg/Makefile b/test/hotspot/jtreg/Makefile
index 3e4ac3117d4..95656290157 100644
--- a/test/hotspot/jtreg/Makefile
+++ b/test/hotspot/jtreg/Makefile
@@ -1,5 +1,5 @@
#
-# Copyright (c) 1995, 2016, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 1995, 2018, Oracle and/or its affiliates. All rights reserved.
# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
#
# This code is free software; you can redistribute it and/or modify it
@@ -66,13 +66,15 @@ ifndef CONCURRENCY_FACTOR
CONCURRENCY_FACTOR = 1
endif
-# Concurrency based on min(cores / 2, 12)
-CONCURRENCY := $(shell awk 'BEGIN { printf "%.0f", $(NUM_CORES) / 2 * $(CONCURRENCY_FACTOR) }')
-ifeq ($(CONCURRENCY), 0)
- CONCURRENCY := 1
-else ifeq ($(shell expr $(CONCURRENCY) \> 12), 1)
- CONCURRENCY := 12
-endif
+# Concurrency based on min(cores / 2, 12) * CONCURRENCY_FACTOR
+CONCURRENCY := $(shell awk \
+ 'BEGIN { \
+ c = $(NUM_CORES) / 2; \
+ if (c > 12) c = 12; \
+ c = c * $(CONCURRENCY_FACTOR); \
+ if (c < 1) c = 1; \
+ printf "%.0f", c; \
+ }')
# Make sure MaxRAMPercentage is high enough to not cause OOM or swapping since we may end up with a lot of JVM's
JTREG_BASIC_OPTIONS += -vmoption:-XX:MaxRAMPercentage=$(shell expr 25 / $(CONCURRENCY))
diff --git a/test/hotspot/jtreg/ProblemList.txt b/test/hotspot/jtreg/ProblemList.txt
index e170022c8f2..cbd31df98cc 100644
--- a/test/hotspot/jtreg/ProblemList.txt
+++ b/test/hotspot/jtreg/ProblemList.txt
@@ -71,6 +71,7 @@ gc/g1/TestVerifyGCType.java 8193067 generic-all
gc/stress/gclocker/TestGCLockerWithParallel.java 8180622 generic-all
gc/stress/gclocker/TestGCLockerWithG1.java 8179226 generic-all
gc/survivorAlignment/TestPromotionFromSurvivorToTenuredAfterMinorGC.java 8177765 generic-all
+gc/stress/TestJNIBlockFullGC/TestJNIBlockFullGC.java 8192647 generic-all
#############################################################################
diff --git a/test/hotspot/jtreg/gc/stress/TestJNIBlockFullGC/TestJNIBlockFullGC.java b/test/hotspot/jtreg/gc/stress/TestJNIBlockFullGC/TestJNIBlockFullGC.java
new file mode 100644
index 00000000000..9a817e668f5
--- /dev/null
+++ b/test/hotspot/jtreg/gc/stress/TestJNIBlockFullGC/TestJNIBlockFullGC.java
@@ -0,0 +1,181 @@
+/*
+ * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, SAP SE and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test TestJNIBlockFullGC
+ * @summary Check that in G1 a Full GC to reclaim space can not be blocked out by the GC locker.
+ * @key gc
+ * @requires vm.gc.G1
+ * @run main/othervm/native -Xmx64m -XX:+UseG1GC -Xlog:gc=info,gc+alloc=trace -XX:MaxGCPauseMillis=10 TestJNIBlockFullGC 10 10000 10000 10000 30000 10000 0.7
+ */
+
+import java.lang.ref.SoftReference;
+
+public class TestJNIBlockFullGC {
+
+ static {
+ System.loadLibrary("TestJNIBlockFullGC");
+ }
+
+ public static volatile Object tmp;
+
+ public static volatile boolean hadError = false;
+
+ private static native int TestCriticalArray0(int[] x);
+
+ public static class Node {
+ public SoftReference next;
+ long payload1;
+ long payload2;
+ long payload3;
+ long payload4;
+
+ public Node(int load) {
+ payload1 = payload2 = payload3 = payload4 = load;
+ }
+ }
+
+ public static void warmUp(long warmupEndTime, int size) {
+ // First let the GC assume most of our objects will die.
+ Node[] roots = new Node[size];
+
+ while (System.currentTimeMillis() < warmupEndTime) {
+ int index = (int) (Math.random() * roots.length);
+ roots[index] = new Node(1);
+ }
+
+ // Make sure the young generation is empty.
+ for (int i = 0; i < roots.length; ++i) {
+ roots[i] = null;
+ }
+ }
+
+ public static void runTest(long endTime, int size, double alive) {
+ final int length = 10000;
+ int[] array1 = new int[length];
+ for (int x = 1; x < length; x++) {
+ array1[x] = x;
+ }
+
+ Node[] roots = new Node[size];
+ try {
+ int index = 0;
+ roots[0] = new Node(0);
+
+ while (!hadError && (System.currentTimeMillis() < endTime)) {
+ int test_val1 = TestCriticalArray0(array1);
+
+ if (Math.random() > alive) {
+ tmp = new Node(test_val1);
+ } else {
+ index = (int) (Math.random() * roots.length);
+
+ if (roots[index] != null) {
+ Node node = new Node(test_val1);
+ node.next = new SoftReference(roots[index]);
+ roots[index] = node;
+ } else {
+ roots[index] = new Node(test_val1);
+ }
+ }
+ }
+ } catch (OutOfMemoryError e) {
+ hadError = true;
+ e.printStackTrace();
+ }
+ }
+
+ private static void joinThreads(Thread[] threads) throws Exception {
+ for (int i = 0; i < threads.length; i++) {
+ try {
+ if (threads[i] != null) {
+ threads[i].join();
+ }
+ } catch (InterruptedException e) {
+ e.printStackTrace();
+ throw e;
+ }
+ }
+ }
+
+ public static void main(String[] args) throws Exception {
+ if (args.length < 7){
+ System.out.println("Usage: java TestJNIBlockFullGC ");
+ System.exit(0);
+ }
+
+ int warmupThreads = Integer.parseInt(args[0]);
+ System.out.println("# Warmup Threads = " + warmupThreads);
+
+ int warmupDuration = Integer.parseInt(args[1]);
+ System.out.println("WarmUp Duration = " + warmupDuration);
+ int warmupIterations = Integer.parseInt(args[2]);
+ System.out.println("# Warmup Iterations = "+ warmupIterations);
+
+ int mainThreads = Integer.parseInt(args[3]);
+ System.out.println("# Main Threads = " + mainThreads);
+ int mainDuration = Integer.parseInt(args[4]);
+ System.out.println("Main Duration = " + mainDuration);
+ int mainIterations = Integer.parseInt(args[5]);
+ System.out.println("# Main Iterations = " + mainIterations);
+
+ double liveFrac = Double.parseDouble(args[6]);
+ System.out.println("Live Fraction = " + liveFrac);
+
+ Thread threads[] = new Thread[Math.max(warmupThreads, mainThreads)];
+
+ System.out.println("Start warm-up threads!");
+ long warmupStartTime = System.currentTimeMillis();
+ for (int i = 0; i < warmupThreads; i++) {
+ threads[i] = new Thread() {
+ public void run() {
+ warmUp(warmupStartTime + warmupDuration, warmupIterations);
+ };
+ };
+ threads[i].start();
+ }
+
+ joinThreads(threads);
+
+ System.gc();
+ System.out.println("Keep alive a lot");
+
+ long startTime = System.currentTimeMillis();
+ for (int i = 0; i < mainThreads; i++) {
+ threads[i] = new Thread() {
+ public void run() {
+ runTest(startTime + mainDuration, mainIterations, liveFrac);
+ };
+ };
+ threads[i].start();
+ }
+ System.out.println("All threads started");
+
+ joinThreads(threads);
+
+ if (hadError) {
+ throw new RuntimeException("Experienced an OoME during execution.");
+ }
+ }
+}
diff --git a/test/hotspot/jtreg/gc/stress/TestJNIBlockFullGC/libTestJNIBlockFullGC.c b/test/hotspot/jtreg/gc/stress/TestJNIBlockFullGC/libTestJNIBlockFullGC.c
new file mode 100644
index 00000000000..96ea8c01ca9
--- /dev/null
+++ b/test/hotspot/jtreg/gc/stress/TestJNIBlockFullGC/libTestJNIBlockFullGC.c
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, SAP SE and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#include "jni.h"
+
+JNIEXPORT jint JNICALL
+Java_TestJNIBlockFullGC_TestCriticalArray0(JNIEnv *env, jclass jCls, jintArray jIn) {
+ jint *bufIn = NULL;
+ jint jInLen = (*env)->GetArrayLength(env, jIn);
+ jint result = 0;
+ jint i;
+
+ if (jInLen != 0) {
+ bufIn = (jint*)(*env)->GetPrimitiveArrayCritical(env, jIn, 0);
+ }
+
+ for (i = 0; i < jInLen; ++i) {
+ result += bufIn[i]; // result = sum of all array elements
+ }
+
+ if (bufIn != NULL) {
+ (*env)->ReleasePrimitiveArrayCritical(env, jIn, bufIn, 0);
+ }
+
+ return result;
+}
+
diff --git a/test/hotspot/jtreg/gc/stress/TestReclaimStringsLeaksMemory.java b/test/hotspot/jtreg/gc/stress/TestReclaimStringsLeaksMemory.java
new file mode 100644
index 00000000000..d22447921c4
--- /dev/null
+++ b/test/hotspot/jtreg/gc/stress/TestReclaimStringsLeaksMemory.java
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test TestReclaimStringsLeaksMemory
+ * @bug 8180048
+ * @summary Ensure that during a Full GC interned string memory is reclaimed completely.
+ * @requires vm.gc=="null"
+ * @requires !vm.debug
+ * @key gc
+ * @library /test/lib
+ * @modules java.base/jdk.internal.misc
+ * @run main/othervm TestReclaimStringsLeaksMemory
+ * @run main/othervm TestReclaimStringsLeaksMemory -XX:+UseSerialGC
+ * @run main/othervm TestReclaimStringsLeaksMemory -XX:+UseParallelGC
+ * @run main/othervm TestReclaimStringsLeaksMemory -XX:+UseParallelGC -XX:-UseParallelOldGC
+ * @run main/othervm TestReclaimStringsLeaksMemory -XX:+UseConcMarkSweepGC
+ * @run main/othervm TestReclaimStringsLeaksMemory -XX:+UseG1GC
+ */
+
+import java.util.Arrays;
+import java.util.ArrayList;
+import java.util.regex.Pattern;
+import java.util.regex.Matcher;
+
+import jdk.test.lib.Asserts;
+import jdk.test.lib.process.OutputAnalyzer;
+import jdk.test.lib.process.ProcessTools;
+
+public class TestReclaimStringsLeaksMemory {
+
+ // The amount of memory in kB reserved in the "Symbol" category that indicates a memory leak for
+ // this test.
+ public static final int ReservedThreshold = 70000;
+
+ public static void main(String[] args) throws Exception {
+ ArrayList baseargs = new ArrayList(Arrays.asList( "-Xms256M",
+ "-Xmx256M",
+ "-Xlog:gc*",
+ "-XX:NativeMemoryTracking=summary",
+ "-XX:+UnlockDiagnosticVMOptions",
+ "-XX:+PrintNMTStatistics" ));
+ baseargs.addAll(Arrays.asList(args));
+ baseargs.add(GCTest.class.getName());
+ ProcessBuilder pb_default =
+ ProcessTools.createJavaProcessBuilder(baseargs.toArray(new String[] {}));
+ verifySymbolMemoryUsageNotTooHigh(new OutputAnalyzer(pb_default.start()));
+ }
+
+ private static void verifySymbolMemoryUsageNotTooHigh(OutputAnalyzer output) throws Exception {
+ String stdout = output.getStdout();
+ System.out.println(stdout);
+
+ Pattern p = Pattern.compile("Symbol \\(reserved=(\\d*)");
+ Matcher m = p.matcher(stdout);
+
+ if (!m.find()) {
+ throw new RuntimeException("Could not find Symbol memory usage in NMT output");
+ }
+
+ int reserved = Integer.parseInt(m.group(1));
+ Asserts.assertLT(reserved, ReservedThreshold, "Reserved memory size is " + reserved + "KB which is greater than or equal to " + ReservedThreshold + "KB indicating a memory leak");
+
+ output.shouldHaveExitValue(0);
+ }
+
+ static class GCTest {
+ public static final String BaseName = "SomeRandomBaseString";
+ public static volatile String lastString;
+
+ public static void main(String [] args) {
+ for (int iterations = 0; iterations < 20;) {
+ for (int i = 0; i < 1000000; i++) {
+ lastString = (BaseName + i).intern();
+ }
+ if (++iterations % 5 == 0) {
+ System.gc();
+ }
+ }
+ }
+ }
+}
+
diff --git a/test/hotspot/jtreg/runtime/ErrorHandling/BadNativeStackInErrorHandlingTest.java b/test/hotspot/jtreg/runtime/ErrorHandling/BadNativeStackInErrorHandlingTest.java
new file mode 100644
index 00000000000..42f081aa83c
--- /dev/null
+++ b/test/hotspot/jtreg/runtime/ErrorHandling/BadNativeStackInErrorHandlingTest.java
@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.InputStreamReader;
+import java.util.regex.Pattern;
+
+import jdk.test.lib.Platform;
+import jdk.test.lib.process.OutputAnalyzer;
+import jdk.test.lib.process.ProcessTools;
+
+/*
+ * @test
+ * @bug 8194652
+ * @summary Printing native stack shows an "error occurred during error reporting".
+ * @modules java.base/jdk.internal.misc
+ * @library /test/lib
+ */
+
+// This test was adapted from SafeFetchInErrorHandlingTest.java.
+public class BadNativeStackInErrorHandlingTest {
+ public static void main(String[] args) throws Exception {
+ if (!Platform.isDebugBuild() || Platform.isZero()) {
+ return;
+ }
+
+ ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
+ "-XX:+UnlockDiagnosticVMOptions",
+ "-Xmx100M",
+ "-XX:ErrorHandlerTest=14",
+ "-XX:-CreateCoredumpOnCrash",
+ "-version");
+
+ OutputAnalyzer output_detail = new OutputAnalyzer(pb.start());
+
+ // we should have crashed with a SIGSEGV
+ output_detail.shouldMatch("# A fatal error has been detected by the Java Runtime Environment:.*");
+ output_detail.shouldMatch("# +(?:SIGSEGV|EXCEPTION_ACCESS_VIOLATION).*");
+
+ // extract hs-err file
+ String hs_err_file = output_detail.firstMatch("# *(\\S*hs_err_pid\\d+\\.log)", 1);
+ if (hs_err_file == null) {
+ throw new RuntimeException("Did not find hs-err file in output.\n");
+ }
+
+ File f = new File(hs_err_file);
+ if (!f.exists()) {
+ throw new RuntimeException("hs-err file missing at " +
+ f.getAbsolutePath() + ".\n");
+ }
+
+ System.out.println("Found hs_err file. Scanning...");
+
+ FileInputStream fis = new FileInputStream(f);
+ BufferedReader br = new BufferedReader(new InputStreamReader(fis));
+ String line = null;
+
+ // The failing line looks like this:
+ // [error occurred during error reporting (printing native stack), id 0xb]
+ Pattern pattern =
+ Pattern.compile("\\[error occurred during error reporting \\(printing native stack\\), id .*\\]");
+
+ String lastLine = null;
+ while ((line = br.readLine()) != null) {
+ if (pattern.matcher(line).matches()) {
+ System.out.println("Found: " + line + ".");
+ throw new RuntimeException("hs-err file should not contain: '" +
+ pattern + "'");
+ }
+ lastLine = line;
+ }
+ br.close();
+
+ if (!lastLine.equals("END.")) {
+ throw new RuntimeException("hs-err file incomplete (missing END marker.)");
+ } else {
+ System.out.println("End marker found.");
+ }
+
+ System.out.println("OK.");
+ }
+}
diff --git a/test/hotspot/jtreg/runtime/NMT/PrintNMTStatistics.java b/test/hotspot/jtreg/runtime/NMT/PrintNMTStatistics.java
index 93dfd571496..160f70484c5 100644
--- a/test/hotspot/jtreg/runtime/NMT/PrintNMTStatistics.java
+++ b/test/hotspot/jtreg/runtime/NMT/PrintNMTStatistics.java
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -46,7 +46,6 @@ public class PrintNMTStatistics {
OutputAnalyzer output_detail = new OutputAnalyzer(pb.start());
output_detail.shouldContain("Virtual memory map:");
output_detail.shouldContain("Details:");
- output_detail.shouldNotContain("error");
output_detail.shouldHaveExitValue(0);
// Make sure memory reserved for Module processing is recorded.
@@ -62,7 +61,6 @@ public class PrintNMTStatistics {
output_summary.shouldContain("Java Heap (reserved=");
output_summary.shouldNotContain("Virtual memory map:");
output_summary.shouldNotContain("Details:");
- output_summary.shouldNotContain("error");
output_summary.shouldHaveExitValue(0);
}
}
diff --git a/test/hotspot/jtreg/runtime/appcds/DirClasspathTest.java b/test/hotspot/jtreg/runtime/appcds/DirClasspathTest.java
index 0c78b6d4a05..f2ea456ee70 100644
--- a/test/hotspot/jtreg/runtime/appcds/DirClasspathTest.java
+++ b/test/hotspot/jtreg/runtime/appcds/DirClasspathTest.java
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -33,8 +33,13 @@
import jdk.test.lib.Platform;
import jdk.test.lib.process.OutputAnalyzer;
import java.io.File;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.Arrays;
public class DirClasspathTest {
+ private static final int MAX_PATH = 260;
+
public static void main(String[] args) throws Exception {
File dir = new File(System.getProperty("user.dir"));
File emptydir = new File(dir, "emptydir");
@@ -42,15 +47,36 @@ public class DirClasspathTest {
// Empty dir in -cp: should be OK
OutputAnalyzer output;
- if (!Platform.isWindows()) {
- // This block fails on Windows because of JDK-8192927
- output = TestCommon.dump(emptydir.getPath(), TestCommon.list("DoesntMatter"), "-Xlog:class+path=info");
- TestCommon.checkDump(output);
+ String classList[] = {"java/lang/Object"};
+ output = TestCommon.dump(emptydir.getPath(), classList, "-Xlog:class+path=info");
+ TestCommon.checkDump(output);
+
+ // Long path to empty dir in -cp: should be OK
+ Path classDir = Paths.get(System.getProperty("test.classes"));
+ Path destDir = classDir;
+ int subDirLen = MAX_PATH - classDir.toString().length() - 2;
+ if (subDirLen > 0) {
+ char[] chars = new char[subDirLen];
+ Arrays.fill(chars, 'x');
+ String subPath = new String(chars);
+ destDir = Paths.get(System.getProperty("test.classes"), subPath);
}
+ File longDir = destDir.toFile();
+ longDir.mkdir();
+ File subDir = new File(longDir, "subdir");
+ subDir.mkdir();
+ output = TestCommon.dump(subDir.getPath(), classList, "-Xlog:class+path=info");
+ TestCommon.checkDump(output);
// Non-empty dir in -cp: should fail
// is not empty because it has at least one subdirectory, i.e.,
- output = TestCommon.dump(dir.getPath(), TestCommon.list("DoesntMatter"), "-Xlog:class+path=info");
+ output = TestCommon.dump(dir.getPath(), classList, "-Xlog:class+path=info");
+ output.shouldNotHaveExitValue(0);
+ output.shouldContain("CDS allows only empty directories in archived classpaths");
+
+ // Long path to non-empty dir in -cp: should fail
+ // is not empty because it has at least one subdirectory, i.e.,
+ output = TestCommon.dump(longDir.getPath(), classList, "-Xlog:class+path=info");
output.shouldNotHaveExitValue(0);
output.shouldContain("CDS allows only empty directories in archived classpaths");
}
diff --git a/test/hotspot/jtreg/serviceability/sa/ClhsdbThread.java b/test/hotspot/jtreg/serviceability/sa/ClhsdbThread.java
new file mode 100644
index 00000000000..67a8a29d979
--- /dev/null
+++ b/test/hotspot/jtreg/serviceability/sa/ClhsdbThread.java
@@ -0,0 +1,118 @@
+/*
+ * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import jdk.test.lib.apps.LingeredApp;
+
+/*
+ * @test
+ * @bug 8193352
+ * @summary Test clhsdb 'thread' and 'threads' commands
+ * @library /test/lib
+ * @run main/othervm ClhsdbThread
+ */
+
+public class ClhsdbThread {
+
+ public static void main(String[] args) throws Exception {
+ System.out.println("Starting ClhsdbThread test");
+
+ LingeredApp theApp = null;
+ try {
+ ClhsdbLauncher test = new ClhsdbLauncher();
+ theApp = LingeredApp.startApp();
+ System.out.println("Started LingeredApp with pid " + theApp.getPid());
+
+ List cmds = List.of("thread", "thread -a", "threads");
+
+ Map> expStrMap = new HashMap<>();
+ // Check for the presence of the usage string
+ expStrMap.put("thread", List.of( "Usage: thread { -a | id }"));
+ expStrMap.put("thread -a", List.of(
+ "State: BLOCKED",
+ "Stack in use by Java",
+ "Base of Stack",
+ "Last_Java_SP:",
+ "Address"));
+ expStrMap.put("threads", List.of(
+ "Finalizer",
+ "Signal Dispatcher",
+ "Common-Cleaner",
+ "Stack in use by Java:",
+ "State:",
+ "Base of Stack:",
+ "main"));
+ Map> unExpStrMap = new HashMap<>();
+ unExpStrMap.put(
+ "thread -a",
+ List.of("Couldn't find thread -a"));
+
+ String consolidatedOutput = test.run(
+ theApp.getPid(),
+ cmds,
+ expStrMap,
+ unExpStrMap);
+
+ if (consolidatedOutput == null) {
+ // Output could be null due to attach permission issues.
+ System.out.println(
+ "Output is empty. Probably due to attach permission issues.");
+ LingeredApp.stopApp(theApp);
+ return;
+ }
+
+ // Test the thread command now. Obtain from the
+ // output of the previous 'threads' command. The word before
+ // the token 'Finalizer' should denote the thread id of the
+ // 'Finalizer' thread.
+
+ String[] snippets = consolidatedOutput.split("Finalizer");
+ String[] wordTokens = snippets[0].split(" ");
+ String threadIdObtained = wordTokens[wordTokens.length - 1];
+
+ // Weed out newlines and blurb before that.
+ if (threadIdObtained.contains("\n")) {
+ String[] threadIdTokens = threadIdObtained.split("\n");
+ threadIdObtained = threadIdTokens[threadIdTokens.length - 1];
+ }
+
+ expStrMap = new HashMap<>();
+ System.out.println("Thread Id obtained is: " + threadIdObtained);
+
+ String cmd = "thread " + threadIdObtained;
+ expStrMap.put(cmd, List.of(
+ "Base of Stack:",
+ "State:",
+ "Last_Java_SP"));
+ cmds = List.of(cmd);
+ test.run(theApp.getPid(), cmds, expStrMap, null);
+ } catch (Exception ex) {
+ throw new RuntimeException("Test ERROR " + ex, ex);
+ } finally {
+ LingeredApp.stopApp(theApp);
+ }
+ System.out.println("Test PASSED");
+ }
+}
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