Merge

hotspot/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/runtime/ppc64/PPC64Frame.java

@@ -46,7 +46,6 @@ public class PPC64Frame extends Frame {
   private static final int SENDER_SP_OFFSET           =  0;
 
   // Interpreter frames
-  private static final int INTERPRETER_FRAME_MIRROR_OFFSET = -3; // for native calls only
   private static final int INTERPRETER_FRAME_SENDER_SP_OFFSET = -4;
   private static final int INTERPRETER_FRAME_LAST_SP_OFFSET = INTERPRETER_FRAME_SENDER_SP_OFFSET - 1;
   private static final int INTERPRETER_FRAME_MDX_OFFSET = INTERPRETER_FRAME_LAST_SP_OFFSET -1;
@@ -55,7 +54,8 @@ public class PPC64Frame extends Frame {
   private static final int INTERPRETER_FRAME_CACHE_OFFSET =INTERPRETER_FRAME_BCX_OFFSET - 1;
   private static final int INTERPRETER_FRAME_MONITORS_OFFSET = INTERPRETER_FRAME_CACHE_OFFSET - 1;
   private static final int INTERPRETER_FRAME_LOCALS_OFFSET = INTERPRETER_FRAME_MONITORS_OFFSET - 1;
-  private static final int INTERPRETER_FRAME_METHOD_OFFSET = INTERPRETER_FRAME_LOCALS_OFFSET - 1;
+  private static final int INTERPRETER_FRAME_MIRROR_OFFSET = INTERPRETER_FRAME_LOCALS_OFFSET - 1;
+  private static final int INTERPRETER_FRAME_METHOD_OFFSET = INTERPRETER_FRAME_MIRROR_OFFSET - 1;
   private static final int INTERPRETER_FRAME_INITIAL_SP_OFFSET = INTERPRETER_FRAME_BCX_OFFSET - 1; // FIXME: probably wrong, but unused anyway
   private static final int INTERPRETER_FRAME_MONITOR_BLOCK_TOP_OFFSET = INTERPRETER_FRAME_INITIAL_SP_OFFSET;
   private static final int INTERPRETER_FRAME_MONITOR_BLOCK_BOTTOM_OFFSET = INTERPRETER_FRAME_INITIAL_SP_OFFSET;

hotspot/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/runtime/sparc/SPARCFrame.java

@@ -714,11 +714,7 @@ public class SPARCFrame extends Frame {
   /** 2 words, also used to save float regs across  calls to C */
   public static final int INTERPRETER_FRAME_D_SCRATCH_FP_OFFSET           = -2;
   public static final int INTERPRETER_FRAME_L_SCRATCH_FP_OFFSET           = -4;
-  /** For native calls only */
+  public static final int INTERPRETER_FRAME_MIRROR_OFFSET                 = -5;
-  public static final int INTERPRETER_FRAME_PADDING_OFFSET                = -5;
-  /** For native calls only */
-  public static final int INTERPRETER_FRAME_MIRROR_OFFSET                 = -6;
-  /** Should be same as above, and should be zero mod 8 */
   public static final int INTERPRETER_FRAME_VM_LOCALS_FP_OFFSET           = -6;
   public static final int INTERPRETER_FRAME_VM_LOCAL_WORDS                = -INTERPRETER_FRAME_VM_LOCALS_FP_OFFSET;
 

hotspot/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/runtime/x86/X86Frame.java

@@ -48,10 +48,10 @@ public class X86Frame extends Frame {
   private static final int SENDER_SP_OFFSET           =  2;
 
   // Interpreter frames
-  private static final int INTERPRETER_FRAME_MIRROR_OFFSET    =  2; // for native calls only
   private static final int INTERPRETER_FRAME_SENDER_SP_OFFSET = -1;
   private static final int INTERPRETER_FRAME_LAST_SP_OFFSET   = INTERPRETER_FRAME_SENDER_SP_OFFSET - 1;
   private static final int INTERPRETER_FRAME_METHOD_OFFSET    = INTERPRETER_FRAME_LAST_SP_OFFSET - 1;
+  private static       int INTERPRETER_FRAME_MIRROR_OFFSET;
   private static       int INTERPRETER_FRAME_MDX_OFFSET;         // Non-core builds only
   private static       int INTERPRETER_FRAME_CACHE_OFFSET;
   private static       int INTERPRETER_FRAME_LOCALS_OFFSET;
@@ -74,7 +74,8 @@ public class X86Frame extends Frame {
   }
 
   private static synchronized void initialize(TypeDataBase db) {
-    INTERPRETER_FRAME_MDX_OFFSET                  = INTERPRETER_FRAME_METHOD_OFFSET - 1;
+    INTERPRETER_FRAME_MIRROR_OFFSET               = INTERPRETER_FRAME_METHOD_OFFSET - 1;
+    INTERPRETER_FRAME_MDX_OFFSET                  = INTERPRETER_FRAME_MIRROR_OFFSET - 1;
     INTERPRETER_FRAME_CACHE_OFFSET                = INTERPRETER_FRAME_MDX_OFFSET - 1;
     INTERPRETER_FRAME_LOCALS_OFFSET               = INTERPRETER_FRAME_CACHE_OFFSET - 1;
     INTERPRETER_FRAME_BCX_OFFSET                  = INTERPRETER_FRAME_LOCALS_OFFSET - 1;

hotspot/src/share/vm/classfile/classLoaderData.cpp

@@ -126,13 +126,17 @@ bool ClassLoaderData::claim() {
 // ClassLoaderData, no other non-GC thread has knowledge of the anonymous class while
 // it is being defined, therefore _keep_alive is not volatile or atomic.
 void ClassLoaderData::inc_keep_alive() {
-  assert(_keep_alive >= 0, "Invalid keep alive count");
+  if (is_anonymous()) {
-  _keep_alive++;
+    assert(_keep_alive >= 0, "Invalid keep alive increment count");
+    _keep_alive++;
+  }
 }
 
 void ClassLoaderData::dec_keep_alive() {
-  assert(_keep_alive > 0, "Invalid keep alive count");
+  if (is_anonymous()) {
-  _keep_alive--;
+    assert(_keep_alive > 0, "Invalid keep alive decrement count");
+    _keep_alive--;
+  }
 }
 
 void ClassLoaderData::oops_do(OopClosure* f, KlassClosure* klass_closure, bool must_claim) {

hotspot/src/share/vm/classfile/classLoaderData.hpp

@@ -176,9 +176,9 @@ class ClassLoaderData : public CHeapObj<mtClass> {
   Mutex* _metaspace_lock;  // Locks the metaspace for allocations and setup.
   bool _unloading;         // true if this class loader goes away
   bool _is_anonymous;      // if this CLD is for an anonymous class
-  int _keep_alive;         // if this CLD is kept alive without a keep_alive_object().
+  s2 _keep_alive;          // if this CLD is kept alive without a keep_alive_object().
-                           // Currently used solely for anonymous classes.
+                           // Used for anonymous classes and the boot class
-                           // _keep_alive does not need to be volatile or
+                           // loader. _keep_alive does not need to be volatile or
                            // atomic since there is one unique CLD per anonymous class.
   volatile int _claimed;   // true if claimed, for example during GC traces.
                            // To avoid applying oop closure more than once.
@@ -289,6 +289,8 @@ class ClassLoaderData : public CHeapObj<mtClass> {
     return _unloading;
   }
 
+  // Used to refcount an anonymous class's CLD in order to
+  // indicate their aliveness without a keep_alive_object().
   void inc_keep_alive();
   void dec_keep_alive();
 

hotspot/src/share/vm/logging/logTagSet.hpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2016 Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2016, 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

hotspot/src/share/vm/runtime/vmStructs.cpp

@@ -2643,7 +2643,7 @@ typedef CompactHashtable<Symbol*, char>       SymbolCompactHashTable;
   /* DEFAULT_CACHE_LINE_SIZE (globalDefinitions.hpp) */                   \
   /***************************************************/                   \
                                                                           \
-  declare_constant(DEFAULT_CACHE_LINE_SIZE)                               \
+  declare_preprocessor_constant("DEFAULT_CACHE_LINE_SIZE", DEFAULT_CACHE_LINE_SIZE) \
                                                                           \
   declare_constant(Deoptimization::Unpack_deopt)                          \
   declare_constant(Deoptimization::Unpack_exception)                      \