955 lines
37 KiB
C++
955 lines
37 KiB
C++
/*
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* Copyright (c) 2012, 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#include "precompiled.hpp"
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#include "asm/codeBuffer.hpp"
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#include "classfile/javaClasses.inline.hpp"
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#include "code/codeCache.hpp"
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#include "compiler/compileBroker.hpp"
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#include "compiler/disassembler.hpp"
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#include "jvmci/jvmciRuntime.hpp"
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#include "jvmci/jvmciCompilerToVM.hpp"
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#include "jvmci/jvmciCompiler.hpp"
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#include "jvmci/jvmciJavaClasses.hpp"
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#include "jvmci/jvmciEnv.hpp"
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#include "logging/log.hpp"
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#include "memory/oopFactory.hpp"
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#include "oops/oop.inline.hpp"
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#include "oops/objArrayOop.inline.hpp"
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#include "prims/jvm.h"
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#include "runtime/biasedLocking.hpp"
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#include "runtime/interfaceSupport.hpp"
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#include "runtime/reflection.hpp"
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#include "runtime/sharedRuntime.hpp"
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#include "utilities/debug.hpp"
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#include "utilities/defaultStream.hpp"
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#if defined(_MSC_VER)
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#define strtoll _strtoi64
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#endif
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jobject JVMCIRuntime::_HotSpotJVMCIRuntime_instance = NULL;
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bool JVMCIRuntime::_HotSpotJVMCIRuntime_initialized = false;
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bool JVMCIRuntime::_well_known_classes_initialized = false;
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const char* JVMCIRuntime::_compiler = NULL;
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int JVMCIRuntime::_trivial_prefixes_count = 0;
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char** JVMCIRuntime::_trivial_prefixes = NULL;
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bool JVMCIRuntime::_shutdown_called = false;
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BasicType JVMCIRuntime::kindToBasicType(Handle kind, TRAPS) {
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if (kind.is_null()) {
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THROW_(vmSymbols::java_lang_NullPointerException(), T_ILLEGAL);
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}
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jchar ch = JavaKind::typeChar(kind);
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switch(ch) {
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case 'z': return T_BOOLEAN;
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case 'b': return T_BYTE;
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case 's': return T_SHORT;
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case 'c': return T_CHAR;
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case 'i': return T_INT;
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case 'f': return T_FLOAT;
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case 'j': return T_LONG;
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case 'd': return T_DOUBLE;
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case 'a': return T_OBJECT;
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case '-': return T_ILLEGAL;
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default:
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JVMCI_ERROR_(T_ILLEGAL, "unexpected Kind: %c", ch);
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}
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}
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// Simple helper to see if the caller of a runtime stub which
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// entered the VM has been deoptimized
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static bool caller_is_deopted() {
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JavaThread* thread = JavaThread::current();
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RegisterMap reg_map(thread, false);
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frame runtime_frame = thread->last_frame();
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frame caller_frame = runtime_frame.sender(®_map);
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assert(caller_frame.is_compiled_frame(), "must be compiled");
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return caller_frame.is_deoptimized_frame();
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}
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// Stress deoptimization
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static void deopt_caller() {
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if ( !caller_is_deopted()) {
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JavaThread* thread = JavaThread::current();
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RegisterMap reg_map(thread, false);
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frame runtime_frame = thread->last_frame();
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frame caller_frame = runtime_frame.sender(®_map);
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Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint);
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assert(caller_is_deopted(), "Must be deoptimized");
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}
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}
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JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_instance(JavaThread* thread, Klass* klass))
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JRT_BLOCK;
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assert(klass->is_klass(), "not a class");
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instanceKlassHandle h(thread, klass);
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h->check_valid_for_instantiation(true, CHECK);
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// make sure klass is initialized
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h->initialize(CHECK);
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// allocate instance and return via TLS
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oop obj = h->allocate_instance(CHECK);
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thread->set_vm_result(obj);
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JRT_BLOCK_END;
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if (ReduceInitialCardMarks) {
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new_store_pre_barrier(thread);
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}
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JRT_END
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JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_array(JavaThread* thread, Klass* array_klass, jint length))
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JRT_BLOCK;
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// Note: no handle for klass needed since they are not used
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// anymore after new_objArray() and no GC can happen before.
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// (This may have to change if this code changes!)
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assert(array_klass->is_klass(), "not a class");
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oop obj;
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if (array_klass->is_typeArray_klass()) {
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BasicType elt_type = TypeArrayKlass::cast(array_klass)->element_type();
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obj = oopFactory::new_typeArray(elt_type, length, CHECK);
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} else {
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Klass* elem_klass = ObjArrayKlass::cast(array_klass)->element_klass();
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obj = oopFactory::new_objArray(elem_klass, length, CHECK);
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}
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thread->set_vm_result(obj);
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// This is pretty rare but this runtime patch is stressful to deoptimization
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// if we deoptimize here so force a deopt to stress the path.
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if (DeoptimizeALot) {
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static int deopts = 0;
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// Alternate between deoptimizing and raising an error (which will also cause a deopt)
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if (deopts++ % 2 == 0) {
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ResourceMark rm(THREAD);
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THROW(vmSymbols::java_lang_OutOfMemoryError());
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} else {
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deopt_caller();
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}
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}
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JRT_BLOCK_END;
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if (ReduceInitialCardMarks) {
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new_store_pre_barrier(thread);
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}
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JRT_END
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void JVMCIRuntime::new_store_pre_barrier(JavaThread* thread) {
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// After any safepoint, just before going back to compiled code,
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// we inform the GC that we will be doing initializing writes to
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// this object in the future without emitting card-marks, so
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// GC may take any compensating steps.
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// NOTE: Keep this code consistent with GraphKit::store_barrier.
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oop new_obj = thread->vm_result();
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if (new_obj == NULL) return;
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assert(Universe::heap()->can_elide_tlab_store_barriers(),
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"compiler must check this first");
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// GC may decide to give back a safer copy of new_obj.
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new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj);
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thread->set_vm_result(new_obj);
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}
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JRT_ENTRY(void, JVMCIRuntime::new_multi_array(JavaThread* thread, Klass* klass, int rank, jint* dims))
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assert(klass->is_klass(), "not a class");
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assert(rank >= 1, "rank must be nonzero");
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oop obj = ArrayKlass::cast(klass)->multi_allocate(rank, dims, CHECK);
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thread->set_vm_result(obj);
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JRT_END
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JRT_ENTRY(void, JVMCIRuntime::dynamic_new_array(JavaThread* thread, oopDesc* element_mirror, jint length))
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oop obj = Reflection::reflect_new_array(element_mirror, length, CHECK);
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thread->set_vm_result(obj);
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JRT_END
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JRT_ENTRY(void, JVMCIRuntime::dynamic_new_instance(JavaThread* thread, oopDesc* type_mirror))
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instanceKlassHandle klass(THREAD, java_lang_Class::as_Klass(type_mirror));
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if (klass == NULL) {
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ResourceMark rm(THREAD);
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THROW(vmSymbols::java_lang_InstantiationException());
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}
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// Create new instance (the receiver)
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klass->check_valid_for_instantiation(false, CHECK);
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// Make sure klass gets initialized
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klass->initialize(CHECK);
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oop obj = klass->allocate_instance(CHECK);
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thread->set_vm_result(obj);
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JRT_END
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extern void vm_exit(int code);
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// Enter this method from compiled code handler below. This is where we transition
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// to VM mode. This is done as a helper routine so that the method called directly
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// from compiled code does not have to transition to VM. This allows the entry
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// method to see if the nmethod that we have just looked up a handler for has
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// been deoptimized while we were in the vm. This simplifies the assembly code
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// cpu directories.
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//
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// We are entering here from exception stub (via the entry method below)
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// If there is a compiled exception handler in this method, we will continue there;
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// otherwise we will unwind the stack and continue at the caller of top frame method
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// Note: we enter in Java using a special JRT wrapper. This wrapper allows us to
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// control the area where we can allow a safepoint. After we exit the safepoint area we can
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// check to see if the handler we are going to return is now in a nmethod that has
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// been deoptimized. If that is the case we return the deopt blob
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// unpack_with_exception entry instead. This makes life for the exception blob easier
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// because making that same check and diverting is painful from assembly language.
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JRT_ENTRY_NO_ASYNC(static address, exception_handler_for_pc_helper(JavaThread* thread, oopDesc* ex, address pc, nmethod*& nm))
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// Reset method handle flag.
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thread->set_is_method_handle_return(false);
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Handle exception(thread, ex);
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nm = CodeCache::find_nmethod(pc);
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assert(nm != NULL, "this is not a compiled method");
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// Adjust the pc as needed/
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if (nm->is_deopt_pc(pc)) {
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RegisterMap map(thread, false);
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frame exception_frame = thread->last_frame().sender(&map);
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// if the frame isn't deopted then pc must not correspond to the caller of last_frame
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assert(exception_frame.is_deoptimized_frame(), "must be deopted");
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pc = exception_frame.pc();
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}
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#ifdef ASSERT
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assert(exception.not_null(), "NULL exceptions should be handled by throw_exception");
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assert(exception->is_oop(), "just checking");
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// Check that exception is a subclass of Throwable, otherwise we have a VerifyError
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if (!(exception->is_a(SystemDictionary::Throwable_klass()))) {
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if (ExitVMOnVerifyError) vm_exit(-1);
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ShouldNotReachHere();
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}
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#endif
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// Check the stack guard pages and reenable them if necessary and there is
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// enough space on the stack to do so. Use fast exceptions only if the guard
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// pages are enabled.
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bool guard_pages_enabled = thread->stack_guards_enabled();
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if (!guard_pages_enabled) guard_pages_enabled = thread->reguard_stack();
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if (JvmtiExport::can_post_on_exceptions()) {
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// To ensure correct notification of exception catches and throws
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// we have to deoptimize here. If we attempted to notify the
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// catches and throws during this exception lookup it's possible
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// we could deoptimize on the way out of the VM and end back in
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// the interpreter at the throw site. This would result in double
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// notifications since the interpreter would also notify about
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// these same catches and throws as it unwound the frame.
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RegisterMap reg_map(thread);
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frame stub_frame = thread->last_frame();
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frame caller_frame = stub_frame.sender(®_map);
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// We don't really want to deoptimize the nmethod itself since we
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// can actually continue in the exception handler ourselves but I
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// don't see an easy way to have the desired effect.
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Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint);
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assert(caller_is_deopted(), "Must be deoptimized");
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return SharedRuntime::deopt_blob()->unpack_with_exception_in_tls();
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}
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// ExceptionCache is used only for exceptions at call sites and not for implicit exceptions
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if (guard_pages_enabled) {
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address fast_continuation = nm->handler_for_exception_and_pc(exception, pc);
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if (fast_continuation != NULL) {
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// Set flag if return address is a method handle call site.
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thread->set_is_method_handle_return(nm->is_method_handle_return(pc));
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return fast_continuation;
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}
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}
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// If the stack guard pages are enabled, check whether there is a handler in
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// the current method. Otherwise (guard pages disabled), force an unwind and
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// skip the exception cache update (i.e., just leave continuation==NULL).
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address continuation = NULL;
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if (guard_pages_enabled) {
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// New exception handling mechanism can support inlined methods
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// with exception handlers since the mappings are from PC to PC
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// debugging support
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// tracing
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if (log_is_enabled(Info, exceptions)) {
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ResourceMark rm;
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log_info(exceptions)("Exception <%s> (" INTPTR_FORMAT ") thrown in"
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" compiled method <%s> at PC " INTPTR_FORMAT
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" for thread " INTPTR_FORMAT,
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exception->print_value_string(),
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p2i((address)exception()),
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nm->method()->print_value_string(), p2i(pc),
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p2i(thread));
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}
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// for AbortVMOnException flag
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NOT_PRODUCT(Exceptions::debug_check_abort(exception));
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// Clear out the exception oop and pc since looking up an
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// exception handler can cause class loading, which might throw an
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// exception and those fields are expected to be clear during
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// normal bytecode execution.
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thread->clear_exception_oop_and_pc();
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continuation = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, false, false);
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// If an exception was thrown during exception dispatch, the exception oop may have changed
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thread->set_exception_oop(exception());
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thread->set_exception_pc(pc);
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// the exception cache is used only by non-implicit exceptions
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if (continuation != NULL && !SharedRuntime::deopt_blob()->contains(continuation)) {
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nm->add_handler_for_exception_and_pc(exception, pc, continuation);
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}
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}
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// Set flag if return address is a method handle call site.
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thread->set_is_method_handle_return(nm->is_method_handle_return(pc));
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if (log_is_enabled(Info, exceptions)) {
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ResourceMark rm;
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log_info(exceptions)("Thread " PTR_FORMAT " continuing at PC " PTR_FORMAT
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" for exception thrown at PC " PTR_FORMAT,
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p2i(thread), p2i(continuation), p2i(pc));
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}
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return continuation;
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JRT_END
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// Enter this method from compiled code only if there is a Java exception handler
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// in the method handling the exception.
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// We are entering here from exception stub. We don't do a normal VM transition here.
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// We do it in a helper. This is so we can check to see if the nmethod we have just
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// searched for an exception handler has been deoptimized in the meantime.
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address JVMCIRuntime::exception_handler_for_pc(JavaThread* thread) {
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oop exception = thread->exception_oop();
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address pc = thread->exception_pc();
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// Still in Java mode
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DEBUG_ONLY(ResetNoHandleMark rnhm);
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nmethod* nm = NULL;
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address continuation = NULL;
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{
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// Enter VM mode by calling the helper
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ResetNoHandleMark rnhm;
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continuation = exception_handler_for_pc_helper(thread, exception, pc, nm);
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}
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// Back in JAVA, use no oops DON'T safepoint
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// Now check to see if the compiled method we were called from is now deoptimized.
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// If so we must return to the deopt blob and deoptimize the nmethod
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if (nm != NULL && caller_is_deopted()) {
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continuation = SharedRuntime::deopt_blob()->unpack_with_exception_in_tls();
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}
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assert(continuation != NULL, "no handler found");
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return continuation;
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}
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JRT_ENTRY(void, JVMCIRuntime::create_null_exception(JavaThread* thread))
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SharedRuntime::throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException());
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thread->set_vm_result(PENDING_EXCEPTION);
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CLEAR_PENDING_EXCEPTION;
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JRT_END
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JRT_ENTRY(void, JVMCIRuntime::create_out_of_bounds_exception(JavaThread* thread, jint index))
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char message[jintAsStringSize];
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sprintf(message, "%d", index);
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SharedRuntime::throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), message);
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thread->set_vm_result(PENDING_EXCEPTION);
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CLEAR_PENDING_EXCEPTION;
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JRT_END
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JRT_ENTRY_NO_ASYNC(void, JVMCIRuntime::monitorenter(JavaThread* thread, oopDesc* obj, BasicLock* lock))
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IF_TRACE_jvmci_3 {
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char type[O_BUFLEN];
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obj->klass()->name()->as_C_string(type, O_BUFLEN);
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markOop mark = obj->mark();
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TRACE_jvmci_3("%s: entered locking slow case with obj=" INTPTR_FORMAT ", type=%s, mark=" INTPTR_FORMAT ", lock=" INTPTR_FORMAT, thread->name(), p2i(obj), type, p2i(mark), p2i(lock));
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tty->flush();
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}
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#ifdef ASSERT
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if (PrintBiasedLockingStatistics) {
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Atomic::inc(BiasedLocking::slow_path_entry_count_addr());
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}
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#endif
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Handle h_obj(thread, obj);
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assert(h_obj()->is_oop(), "must be NULL or an object");
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if (UseBiasedLocking) {
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// Retry fast entry if bias is revoked to avoid unnecessary inflation
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ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK);
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} else {
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if (JVMCIUseFastLocking) {
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// When using fast locking, the compiled code has already tried the fast case
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ObjectSynchronizer::slow_enter(h_obj, lock, THREAD);
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} else {
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ObjectSynchronizer::fast_enter(h_obj, lock, false, THREAD);
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}
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}
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TRACE_jvmci_3("%s: exiting locking slow with obj=" INTPTR_FORMAT, thread->name(), p2i(obj));
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JRT_END
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JRT_LEAF(void, JVMCIRuntime::monitorexit(JavaThread* thread, oopDesc* obj, BasicLock* lock))
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assert(thread == JavaThread::current(), "threads must correspond");
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assert(thread->last_Java_sp(), "last_Java_sp must be set");
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// monitorexit is non-blocking (leaf routine) => no exceptions can be thrown
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EXCEPTION_MARK;
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#ifdef DEBUG
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if (!obj->is_oop()) {
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ResetNoHandleMark rhm;
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nmethod* method = thread->last_frame().cb()->as_nmethod_or_null();
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if (method != NULL) {
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tty->print_cr("ERROR in monitorexit in method %s wrong obj " INTPTR_FORMAT, method->name(), p2i(obj));
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}
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thread->print_stack_on(tty);
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assert(false, "invalid lock object pointer dected");
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}
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#endif
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if (JVMCIUseFastLocking) {
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// When using fast locking, the compiled code has already tried the fast case
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ObjectSynchronizer::slow_exit(obj, lock, THREAD);
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} else {
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ObjectSynchronizer::fast_exit(obj, lock, THREAD);
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}
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IF_TRACE_jvmci_3 {
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char type[O_BUFLEN];
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obj->klass()->name()->as_C_string(type, O_BUFLEN);
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TRACE_jvmci_3("%s: exited locking slow case with obj=" INTPTR_FORMAT ", type=%s, mark=" INTPTR_FORMAT ", lock=" INTPTR_FORMAT, thread->name(), p2i(obj), type, p2i(obj->mark()), p2i(lock));
|
|
tty->flush();
|
|
}
|
|
JRT_END
|
|
|
|
JRT_LEAF(void, JVMCIRuntime::log_object(JavaThread* thread, oopDesc* obj, bool as_string, bool newline))
|
|
ttyLocker ttyl;
|
|
|
|
if (obj == NULL) {
|
|
tty->print("NULL");
|
|
} else if (obj->is_oop_or_null(true) && (!as_string || !java_lang_String::is_instance(obj))) {
|
|
if (obj->is_oop_or_null(true)) {
|
|
char buf[O_BUFLEN];
|
|
tty->print("%s@" INTPTR_FORMAT, obj->klass()->name()->as_C_string(buf, O_BUFLEN), p2i(obj));
|
|
} else {
|
|
tty->print(INTPTR_FORMAT, p2i(obj));
|
|
}
|
|
} else {
|
|
ResourceMark rm;
|
|
assert(obj != NULL && java_lang_String::is_instance(obj), "must be");
|
|
char *buf = java_lang_String::as_utf8_string(obj);
|
|
tty->print_raw(buf);
|
|
}
|
|
if (newline) {
|
|
tty->cr();
|
|
}
|
|
JRT_END
|
|
|
|
JRT_LEAF(void, JVMCIRuntime::write_barrier_pre(JavaThread* thread, oopDesc* obj))
|
|
thread->satb_mark_queue().enqueue(obj);
|
|
JRT_END
|
|
|
|
JRT_LEAF(void, JVMCIRuntime::write_barrier_post(JavaThread* thread, void* card_addr))
|
|
thread->dirty_card_queue().enqueue(card_addr);
|
|
JRT_END
|
|
|
|
JRT_LEAF(jboolean, JVMCIRuntime::validate_object(JavaThread* thread, oopDesc* parent, oopDesc* child))
|
|
bool ret = true;
|
|
if(!Universe::heap()->is_in_closed_subset(parent)) {
|
|
tty->print_cr("Parent Object " INTPTR_FORMAT " not in heap", p2i(parent));
|
|
parent->print();
|
|
ret=false;
|
|
}
|
|
if(!Universe::heap()->is_in_closed_subset(child)) {
|
|
tty->print_cr("Child Object " INTPTR_FORMAT " not in heap", p2i(child));
|
|
child->print();
|
|
ret=false;
|
|
}
|
|
return (jint)ret;
|
|
JRT_END
|
|
|
|
JRT_ENTRY(void, JVMCIRuntime::vm_error(JavaThread* thread, jlong where, jlong format, jlong value))
|
|
ResourceMark rm;
|
|
const char *error_msg = where == 0L ? "<internal JVMCI error>" : (char*) (address) where;
|
|
char *detail_msg = NULL;
|
|
if (format != 0L) {
|
|
const char* buf = (char*) (address) format;
|
|
size_t detail_msg_length = strlen(buf) * 2;
|
|
detail_msg = (char *) NEW_RESOURCE_ARRAY(u_char, detail_msg_length);
|
|
jio_snprintf(detail_msg, detail_msg_length, buf, value);
|
|
report_vm_error(__FILE__, __LINE__, error_msg, "%s", detail_msg);
|
|
} else {
|
|
report_vm_error(__FILE__, __LINE__, error_msg);
|
|
}
|
|
JRT_END
|
|
|
|
JRT_LEAF(oopDesc*, JVMCIRuntime::load_and_clear_exception(JavaThread* thread))
|
|
oop exception = thread->exception_oop();
|
|
assert(exception != NULL, "npe");
|
|
thread->set_exception_oop(NULL);
|
|
thread->set_exception_pc(0);
|
|
return exception;
|
|
JRT_END
|
|
|
|
PRAGMA_DIAG_PUSH
|
|
PRAGMA_FORMAT_NONLITERAL_IGNORED
|
|
JRT_LEAF(void, JVMCIRuntime::log_printf(JavaThread* thread, oopDesc* format, jlong v1, jlong v2, jlong v3))
|
|
ResourceMark rm;
|
|
assert(format != NULL && java_lang_String::is_instance(format), "must be");
|
|
char *buf = java_lang_String::as_utf8_string(format);
|
|
tty->print((const char*)buf, v1, v2, v3);
|
|
JRT_END
|
|
PRAGMA_DIAG_POP
|
|
|
|
static void decipher(jlong v, bool ignoreZero) {
|
|
if (v != 0 || !ignoreZero) {
|
|
void* p = (void *)(address) v;
|
|
CodeBlob* cb = CodeCache::find_blob(p);
|
|
if (cb) {
|
|
if (cb->is_nmethod()) {
|
|
char buf[O_BUFLEN];
|
|
tty->print("%s [" INTPTR_FORMAT "+" JLONG_FORMAT "]", cb->as_nmethod_or_null()->method()->name_and_sig_as_C_string(buf, O_BUFLEN), p2i(cb->code_begin()), (jlong)((address)v - cb->code_begin()));
|
|
return;
|
|
}
|
|
cb->print_value_on(tty);
|
|
return;
|
|
}
|
|
if (Universe::heap()->is_in(p)) {
|
|
oop obj = oop(p);
|
|
obj->print_value_on(tty);
|
|
return;
|
|
}
|
|
tty->print(INTPTR_FORMAT " [long: " JLONG_FORMAT ", double %lf, char %c]",p2i((void *)v), (jlong)v, (jdouble)v, (char)v);
|
|
}
|
|
}
|
|
|
|
PRAGMA_DIAG_PUSH
|
|
PRAGMA_FORMAT_NONLITERAL_IGNORED
|
|
JRT_LEAF(void, JVMCIRuntime::vm_message(jboolean vmError, jlong format, jlong v1, jlong v2, jlong v3))
|
|
ResourceMark rm;
|
|
const char *buf = (const char*) (address) format;
|
|
if (vmError) {
|
|
if (buf != NULL) {
|
|
fatal(buf, v1, v2, v3);
|
|
} else {
|
|
fatal("<anonymous error>");
|
|
}
|
|
} else if (buf != NULL) {
|
|
tty->print(buf, v1, v2, v3);
|
|
} else {
|
|
assert(v2 == 0, "v2 != 0");
|
|
assert(v3 == 0, "v3 != 0");
|
|
decipher(v1, false);
|
|
}
|
|
JRT_END
|
|
PRAGMA_DIAG_POP
|
|
|
|
JRT_LEAF(void, JVMCIRuntime::log_primitive(JavaThread* thread, jchar typeChar, jlong value, jboolean newline))
|
|
union {
|
|
jlong l;
|
|
jdouble d;
|
|
jfloat f;
|
|
} uu;
|
|
uu.l = value;
|
|
switch (typeChar) {
|
|
case 'z': tty->print(value == 0 ? "false" : "true"); break;
|
|
case 'b': tty->print("%d", (jbyte) value); break;
|
|
case 'c': tty->print("%c", (jchar) value); break;
|
|
case 's': tty->print("%d", (jshort) value); break;
|
|
case 'i': tty->print("%d", (jint) value); break;
|
|
case 'f': tty->print("%f", uu.f); break;
|
|
case 'j': tty->print(JLONG_FORMAT, value); break;
|
|
case 'd': tty->print("%lf", uu.d); break;
|
|
default: assert(false, "unknown typeChar"); break;
|
|
}
|
|
if (newline) {
|
|
tty->cr();
|
|
}
|
|
JRT_END
|
|
|
|
JRT_ENTRY(jint, JVMCIRuntime::identity_hash_code(JavaThread* thread, oopDesc* obj))
|
|
return (jint) obj->identity_hash();
|
|
JRT_END
|
|
|
|
JRT_ENTRY(jboolean, JVMCIRuntime::thread_is_interrupted(JavaThread* thread, oopDesc* receiver, jboolean clear_interrupted))
|
|
// Ensure that the C++ Thread and OSThread structures aren't freed before we operate.
|
|
// This locking requires thread_in_vm which is why this method cannot be JRT_LEAF.
|
|
Handle receiverHandle(thread, receiver);
|
|
MutexLockerEx ml(thread->threadObj() == (void*)receiver ? NULL : Threads_lock);
|
|
JavaThread* receiverThread = java_lang_Thread::thread(receiverHandle());
|
|
if (receiverThread == NULL) {
|
|
// The other thread may exit during this process, which is ok so return false.
|
|
return JNI_FALSE;
|
|
} else {
|
|
return (jint) Thread::is_interrupted(receiverThread, clear_interrupted != 0);
|
|
}
|
|
JRT_END
|
|
|
|
JRT_ENTRY(jint, JVMCIRuntime::test_deoptimize_call_int(JavaThread* thread, int value))
|
|
deopt_caller();
|
|
return value;
|
|
JRT_END
|
|
|
|
// private static JVMCIRuntime JVMCI.initializeRuntime()
|
|
JVM_ENTRY(jobject, JVM_GetJVMCIRuntime(JNIEnv *env, jclass c))
|
|
if (!EnableJVMCI) {
|
|
THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled")
|
|
}
|
|
JVMCIRuntime::initialize_HotSpotJVMCIRuntime(CHECK_NULL);
|
|
jobject ret = JVMCIRuntime::get_HotSpotJVMCIRuntime_jobject(CHECK_NULL);
|
|
return ret;
|
|
JVM_END
|
|
|
|
Handle JVMCIRuntime::callStatic(const char* className, const char* methodName, const char* signature, JavaCallArguments* args, TRAPS) {
|
|
guarantee(!_HotSpotJVMCIRuntime_initialized, "cannot reinitialize HotSpotJVMCIRuntime");
|
|
|
|
TempNewSymbol name = SymbolTable::new_symbol(className, CHECK_(Handle()));
|
|
KlassHandle klass = SystemDictionary::resolve_or_fail(name, true, CHECK_(Handle()));
|
|
TempNewSymbol runtime = SymbolTable::new_symbol(methodName, CHECK_(Handle()));
|
|
TempNewSymbol sig = SymbolTable::new_symbol(signature, CHECK_(Handle()));
|
|
JavaValue result(T_OBJECT);
|
|
if (args == NULL) {
|
|
JavaCalls::call_static(&result, klass, runtime, sig, CHECK_(Handle()));
|
|
} else {
|
|
JavaCalls::call_static(&result, klass, runtime, sig, args, CHECK_(Handle()));
|
|
}
|
|
return Handle((oop)result.get_jobject());
|
|
}
|
|
|
|
void JVMCIRuntime::initialize_HotSpotJVMCIRuntime(TRAPS) {
|
|
if (JNIHandles::resolve(_HotSpotJVMCIRuntime_instance) == NULL) {
|
|
ResourceMark rm;
|
|
#ifdef ASSERT
|
|
// This should only be called in the context of the JVMCI class being initialized
|
|
TempNewSymbol name = SymbolTable::new_symbol("jdk/vm/ci/runtime/JVMCI", CHECK);
|
|
Klass* k = SystemDictionary::resolve_or_null(name, CHECK);
|
|
instanceKlassHandle klass = InstanceKlass::cast(k);
|
|
assert(klass->is_being_initialized() && klass->is_reentrant_initialization(THREAD),
|
|
"HotSpotJVMCIRuntime initialization should only be triggered through JVMCI initialization");
|
|
#endif
|
|
|
|
if (_compiler != NULL) {
|
|
JavaCallArguments args;
|
|
oop compiler = java_lang_String::create_oop_from_str(_compiler, CHECK);
|
|
args.push_oop(compiler);
|
|
callStatic("jdk/vm/ci/hotspot/HotSpotJVMCICompilerConfig",
|
|
"selectCompiler",
|
|
"(Ljava/lang/String;)Ljava/lang/Boolean;", &args, CHECK);
|
|
}
|
|
|
|
Handle result = callStatic("jdk/vm/ci/hotspot/HotSpotJVMCIRuntime",
|
|
"runtime",
|
|
"()Ljdk/vm/ci/hotspot/HotSpotJVMCIRuntime;", NULL, CHECK);
|
|
objArrayOop trivial_prefixes = HotSpotJVMCIRuntime::trivialPrefixes(result);
|
|
if (trivial_prefixes != NULL) {
|
|
char** prefixes = NEW_C_HEAP_ARRAY(char*, trivial_prefixes->length(), mtCompiler);
|
|
for (int i = 0; i < trivial_prefixes->length(); i++) {
|
|
oop str = trivial_prefixes->obj_at(i);
|
|
if (str == NULL) {
|
|
THROW(vmSymbols::java_lang_NullPointerException());
|
|
} else {
|
|
prefixes[i] = strdup(java_lang_String::as_utf8_string(str));
|
|
}
|
|
}
|
|
_trivial_prefixes = prefixes;
|
|
_trivial_prefixes_count = trivial_prefixes->length();
|
|
}
|
|
_HotSpotJVMCIRuntime_initialized = true;
|
|
_HotSpotJVMCIRuntime_instance = JNIHandles::make_global(result());
|
|
}
|
|
}
|
|
|
|
void JVMCIRuntime::initialize_JVMCI(TRAPS) {
|
|
if (JNIHandles::resolve(_HotSpotJVMCIRuntime_instance) == NULL) {
|
|
callStatic("jdk/vm/ci/runtime/JVMCI",
|
|
"getRuntime",
|
|
"()Ljdk/vm/ci/runtime/JVMCIRuntime;", NULL, CHECK);
|
|
}
|
|
assert(_HotSpotJVMCIRuntime_initialized == true, "what?");
|
|
}
|
|
|
|
void JVMCIRuntime::initialize_well_known_classes(TRAPS) {
|
|
if (JVMCIRuntime::_well_known_classes_initialized == false) {
|
|
SystemDictionary::WKID scan = SystemDictionary::FIRST_JVMCI_WKID;
|
|
SystemDictionary::initialize_wk_klasses_through(SystemDictionary::LAST_JVMCI_WKID, scan, CHECK);
|
|
JVMCIJavaClasses::compute_offsets(CHECK);
|
|
JVMCIRuntime::_well_known_classes_initialized = true;
|
|
}
|
|
}
|
|
|
|
void JVMCIRuntime::metadata_do(void f(Metadata*)) {
|
|
// For simplicity, the existence of HotSpotJVMCIMetaAccessContext in
|
|
// the SystemDictionary well known classes should ensure the other
|
|
// classes have already been loaded, so make sure their order in the
|
|
// table enforces that.
|
|
assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotResolvedJavaMethodImpl) <
|
|
SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier");
|
|
assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotConstantPool) <
|
|
SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier");
|
|
assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotResolvedObjectTypeImpl) <
|
|
SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier");
|
|
|
|
if (HotSpotJVMCIMetaAccessContext::klass() == NULL ||
|
|
!HotSpotJVMCIMetaAccessContext::klass()->is_linked()) {
|
|
// Nothing could be registered yet
|
|
return;
|
|
}
|
|
|
|
// WeakReference<HotSpotJVMCIMetaAccessContext>[]
|
|
objArrayOop allContexts = HotSpotJVMCIMetaAccessContext::allContexts();
|
|
if (allContexts == NULL) {
|
|
return;
|
|
}
|
|
|
|
// These must be loaded at this point but the linking state doesn't matter.
|
|
assert(SystemDictionary::HotSpotResolvedJavaMethodImpl_klass() != NULL, "must be loaded");
|
|
assert(SystemDictionary::HotSpotConstantPool_klass() != NULL, "must be loaded");
|
|
assert(SystemDictionary::HotSpotResolvedObjectTypeImpl_klass() != NULL, "must be loaded");
|
|
|
|
for (int i = 0; i < allContexts->length(); i++) {
|
|
oop ref = allContexts->obj_at(i);
|
|
if (ref != NULL) {
|
|
oop referent = java_lang_ref_Reference::referent(ref);
|
|
if (referent != NULL) {
|
|
// Chunked Object[] with last element pointing to next chunk
|
|
objArrayOop metadataRoots = HotSpotJVMCIMetaAccessContext::metadataRoots(referent);
|
|
while (metadataRoots != NULL) {
|
|
for (int typeIndex = 0; typeIndex < metadataRoots->length() - 1; typeIndex++) {
|
|
oop reference = metadataRoots->obj_at(typeIndex);
|
|
if (reference == NULL) {
|
|
continue;
|
|
}
|
|
oop metadataRoot = java_lang_ref_Reference::referent(reference);
|
|
if (metadataRoot == NULL) {
|
|
continue;
|
|
}
|
|
if (metadataRoot->is_a(SystemDictionary::HotSpotResolvedJavaMethodImpl_klass())) {
|
|
Method* method = CompilerToVM::asMethod(metadataRoot);
|
|
f(method);
|
|
} else if (metadataRoot->is_a(SystemDictionary::HotSpotConstantPool_klass())) {
|
|
ConstantPool* constantPool = CompilerToVM::asConstantPool(metadataRoot);
|
|
f(constantPool);
|
|
} else if (metadataRoot->is_a(SystemDictionary::HotSpotResolvedObjectTypeImpl_klass())) {
|
|
Klass* klass = CompilerToVM::asKlass(metadataRoot);
|
|
f(klass);
|
|
} else {
|
|
metadataRoot->print();
|
|
ShouldNotReachHere();
|
|
}
|
|
}
|
|
metadataRoots = (objArrayOop)metadataRoots->obj_at(metadataRoots->length() - 1);
|
|
assert(metadataRoots == NULL || metadataRoots->is_objArray(), "wrong type");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// private static void CompilerToVM.registerNatives()
|
|
JVM_ENTRY(void, JVM_RegisterJVMCINatives(JNIEnv *env, jclass c2vmClass))
|
|
if (!EnableJVMCI) {
|
|
THROW_MSG(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled");
|
|
}
|
|
|
|
#ifdef _LP64
|
|
#ifndef TARGET_ARCH_sparc
|
|
uintptr_t heap_end = (uintptr_t) Universe::heap()->reserved_region().end();
|
|
uintptr_t allocation_end = heap_end + ((uintptr_t)16) * 1024 * 1024 * 1024;
|
|
guarantee(heap_end < allocation_end, "heap end too close to end of address space (might lead to erroneous TLAB allocations)");
|
|
#endif // TARGET_ARCH_sparc
|
|
#else
|
|
fatal("check TLAB allocation code for address space conflicts");
|
|
#endif
|
|
|
|
JVMCIRuntime::initialize_well_known_classes(CHECK);
|
|
|
|
{
|
|
ThreadToNativeFromVM trans(thread);
|
|
env->RegisterNatives(c2vmClass, CompilerToVM::methods, CompilerToVM::methods_count());
|
|
}
|
|
JVM_END
|
|
|
|
/**
|
|
* Closure for parsing a line from a *.properties file in jre/lib/jvmci/properties.
|
|
* The line must match the regular expression "[^=]+=.*". That is one or more
|
|
* characters other than '=' followed by '=' followed by zero or more characters.
|
|
* Everything before the '=' is the property name and everything after '=' is the value.
|
|
* Lines that start with '#' are treated as comments and ignored.
|
|
* No special processing of whitespace or any escape characters is performed.
|
|
* The last definition of a property "wins" (i.e., it overrides all earlier
|
|
* definitions of the property).
|
|
*/
|
|
class JVMCIPropertiesFileClosure : public ParseClosure {
|
|
SystemProperty** _plist;
|
|
public:
|
|
JVMCIPropertiesFileClosure(SystemProperty** plist) : _plist(plist) {}
|
|
void do_line(char* line) {
|
|
if (line[0] == '#') {
|
|
// skip comment
|
|
return;
|
|
}
|
|
size_t len = strlen(line);
|
|
char* sep = strchr(line, '=');
|
|
if (sep == NULL) {
|
|
warn_and_abort("invalid format: could not find '=' character");
|
|
return;
|
|
}
|
|
if (sep == line) {
|
|
warn_and_abort("invalid format: name cannot be empty");
|
|
return;
|
|
}
|
|
*sep = '\0';
|
|
const char* name = line;
|
|
char* value = sep + 1;
|
|
Arguments::PropertyList_unique_add(_plist, name, value);
|
|
}
|
|
};
|
|
|
|
void JVMCIRuntime::init_system_properties(SystemProperty** plist) {
|
|
char jvmciDir[JVM_MAXPATHLEN];
|
|
const char* fileSep = os::file_separator();
|
|
jio_snprintf(jvmciDir, sizeof(jvmciDir), "%s%slib%sjvmci",
|
|
Arguments::get_java_home(), fileSep, fileSep, fileSep);
|
|
DIR* dir = os::opendir(jvmciDir);
|
|
if (dir != NULL) {
|
|
struct dirent *entry;
|
|
char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(jvmciDir), mtInternal);
|
|
JVMCIPropertiesFileClosure closure(plist);
|
|
const unsigned suffix_len = (unsigned)strlen(".properties");
|
|
while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL && !closure.is_aborted()) {
|
|
const char* name = entry->d_name;
|
|
if (strlen(name) > suffix_len && strcmp(name + strlen(name) - suffix_len, ".properties") == 0) {
|
|
char propertiesFilePath[JVM_MAXPATHLEN];
|
|
jio_snprintf(propertiesFilePath, sizeof(propertiesFilePath), "%s%s%s",jvmciDir, fileSep, name);
|
|
JVMCIRuntime::parse_lines(propertiesFilePath, &closure, false);
|
|
}
|
|
}
|
|
FREE_C_HEAP_ARRAY(char, dbuf);
|
|
os::closedir(dir);
|
|
}
|
|
}
|
|
|
|
#define CHECK_WARN_ABORT_(message) THREAD); \
|
|
if (HAS_PENDING_EXCEPTION) { \
|
|
warning(message); \
|
|
char buf[512]; \
|
|
jio_snprintf(buf, 512, "Uncaught exception at %s:%d", __FILE__, __LINE__); \
|
|
JVMCIRuntime::abort_on_pending_exception(PENDING_EXCEPTION, buf); \
|
|
return; \
|
|
} \
|
|
(void)(0
|
|
|
|
void JVMCIRuntime::save_compiler(const char* compiler) {
|
|
assert(compiler != NULL, "npe");
|
|
assert(_compiler == NULL, "cannot reassign JVMCI compiler");
|
|
_compiler = compiler;
|
|
}
|
|
|
|
void JVMCIRuntime::shutdown(TRAPS) {
|
|
if (_HotSpotJVMCIRuntime_instance != NULL) {
|
|
_shutdown_called = true;
|
|
HandleMark hm(THREAD);
|
|
Handle receiver = get_HotSpotJVMCIRuntime(CHECK);
|
|
JavaValue result(T_VOID);
|
|
JavaCallArguments args;
|
|
args.push_oop(receiver);
|
|
JavaCalls::call_special(&result, receiver->klass(), vmSymbols::shutdown_method_name(), vmSymbols::void_method_signature(), &args, CHECK);
|
|
}
|
|
}
|
|
|
|
bool JVMCIRuntime::treat_as_trivial(Method* method) {
|
|
if (_HotSpotJVMCIRuntime_initialized) {
|
|
oop loader = method->method_holder()->class_loader();
|
|
if (loader == NULL) {
|
|
for (int i = 0; i < _trivial_prefixes_count; i++) {
|
|
if (method->method_holder()->name()->starts_with(_trivial_prefixes[i])) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void JVMCIRuntime::parse_lines(char* path, ParseClosure* closure, bool warnStatFailure) {
|
|
struct stat st;
|
|
if (::stat(path, &st) == 0 && (st.st_mode & S_IFREG) == S_IFREG) { // exists & is regular file
|
|
int file_handle = ::open(path, os::default_file_open_flags(), 0);
|
|
if (file_handle != -1) {
|
|
char* buffer = NEW_C_HEAP_ARRAY(char, st.st_size + 1, mtInternal);
|
|
int num_read;
|
|
num_read = (int) ::read(file_handle, (char*) buffer, st.st_size);
|
|
if (num_read == -1) {
|
|
warning("Error reading file %s due to %s", path, strerror(errno));
|
|
} else if (num_read != st.st_size) {
|
|
warning("Only read %d of " SIZE_FORMAT " bytes from %s", num_read, (size_t) st.st_size, path);
|
|
}
|
|
::close(file_handle);
|
|
closure->set_filename(path);
|
|
if (num_read == st.st_size) {
|
|
buffer[num_read] = '\0';
|
|
|
|
char* line = buffer;
|
|
while (line - buffer < num_read && !closure->is_aborted()) {
|
|
// find line end (\r, \n or \r\n)
|
|
char* nextline = NULL;
|
|
char* cr = strchr(line, '\r');
|
|
char* lf = strchr(line, '\n');
|
|
if (cr != NULL && lf != NULL) {
|
|
char* min = MIN2(cr, lf);
|
|
*min = '\0';
|
|
if (lf == cr + 1) {
|
|
nextline = lf + 1;
|
|
} else {
|
|
nextline = min + 1;
|
|
}
|
|
} else if (cr != NULL) {
|
|
*cr = '\0';
|
|
nextline = cr + 1;
|
|
} else if (lf != NULL) {
|
|
*lf = '\0';
|
|
nextline = lf + 1;
|
|
}
|
|
// trim left
|
|
while (*line == ' ' || *line == '\t') line++;
|
|
char* end = line + strlen(line);
|
|
// trim right
|
|
while (end > line && (*(end -1) == ' ' || *(end -1) == '\t')) end--;
|
|
*end = '\0';
|
|
// skip comments and empty lines
|
|
if (*line != '#' && strlen(line) > 0) {
|
|
closure->parse_line(line);
|
|
}
|
|
if (nextline != NULL) {
|
|
line = nextline;
|
|
} else {
|
|
// File without newline at the end
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
FREE_C_HEAP_ARRAY(char, buffer);
|
|
} else {
|
|
warning("Error opening file %s due to %s", path, strerror(errno));
|
|
}
|
|
} else if (warnStatFailure) {
|
|
warning("Could not stat file %s due to %s", path, strerror(errno));
|
|
}
|
|
}
|