Mercurial > hg > graal-compiler
view src/share/vm/gc_implementation/parallelScavenge/psCompactionManager.cpp @ 1751:2528b5bd749c
6980262: Memory leak when exception is thrown in static initializer
Summary: Use resource memory instead of c-heap for the exception message
Reviewed-by: phh, jmasa
author | kamg |
---|---|
date | Fri, 27 Aug 2010 15:05:28 -0400 |
parents | b2a00dd3117c |
children | 894b1d7c7e01 |
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/* * Copyright (c) 2005, 2010, 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 "incls/_precompiled.incl" #include "incls/_psCompactionManager.cpp.incl" PSOldGen* ParCompactionManager::_old_gen = NULL; ParCompactionManager** ParCompactionManager::_manager_array = NULL; OopTaskQueueSet* ParCompactionManager::_stack_array = NULL; ParCompactionManager::ObjArrayTaskQueueSet* ParCompactionManager::_objarray_queues = NULL; ObjectStartArray* ParCompactionManager::_start_array = NULL; ParMarkBitMap* ParCompactionManager::_mark_bitmap = NULL; RegionTaskQueueSet* ParCompactionManager::_region_array = NULL; ParCompactionManager::ParCompactionManager() : _action(CopyAndUpdate) { ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap(); assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "Sanity"); _old_gen = heap->old_gen(); _start_array = old_gen()->start_array(); marking_stack()->initialize(); _objarray_stack.initialize(); region_stack()->initialize(); // Note that _revisit_klass_stack is allocated out of the // C heap (as opposed to out of ResourceArena). int size = (SystemDictionary::number_of_classes() * 2) * 2 / ParallelGCThreads; _revisit_klass_stack = new (ResourceObj::C_HEAP) GrowableArray<Klass*>(size, true); // From some experiments (#klass/k)^2 for k = 10 seems a better fit, but this will // have to do for now until we are able to investigate a more optimal setting. _revisit_mdo_stack = new (ResourceObj::C_HEAP) GrowableArray<DataLayout*>(size*2, true); } ParCompactionManager::~ParCompactionManager() { delete _revisit_klass_stack; delete _revisit_mdo_stack; // _manager_array and _stack_array are statics // shared with all instances of ParCompactionManager // should not be deallocated. } void ParCompactionManager::initialize(ParMarkBitMap* mbm) { assert(PSParallelCompact::gc_task_manager() != NULL, "Needed for initialization"); _mark_bitmap = mbm; uint parallel_gc_threads = PSParallelCompact::gc_task_manager()->workers(); assert(_manager_array == NULL, "Attempt to initialize twice"); _manager_array = NEW_C_HEAP_ARRAY(ParCompactionManager*, parallel_gc_threads+1 ); guarantee(_manager_array != NULL, "Could not allocate manager_array"); _stack_array = new OopTaskQueueSet(parallel_gc_threads); guarantee(_stack_array != NULL, "Could not allocate stack_array"); _objarray_queues = new ObjArrayTaskQueueSet(parallel_gc_threads); guarantee(_objarray_queues != NULL, "Could not allocate objarray_queues"); _region_array = new RegionTaskQueueSet(parallel_gc_threads); guarantee(_region_array != NULL, "Could not allocate region_array"); // Create and register the ParCompactionManager(s) for the worker threads. for(uint i=0; i<parallel_gc_threads; i++) { _manager_array[i] = new ParCompactionManager(); guarantee(_manager_array[i] != NULL, "Could not create ParCompactionManager"); stack_array()->register_queue(i, _manager_array[i]->marking_stack()); _objarray_queues->register_queue(i, &_manager_array[i]->_objarray_stack); region_array()->register_queue(i, _manager_array[i]->region_stack()); } // The VMThread gets its own ParCompactionManager, which is not available // for work stealing. _manager_array[parallel_gc_threads] = new ParCompactionManager(); guarantee(_manager_array[parallel_gc_threads] != NULL, "Could not create ParCompactionManager"); assert(PSParallelCompact::gc_task_manager()->workers() != 0, "Not initialized?"); } bool ParCompactionManager::should_update() { assert(action() != NotValid, "Action is not set"); return (action() == ParCompactionManager::Update) || (action() == ParCompactionManager::CopyAndUpdate) || (action() == ParCompactionManager::UpdateAndCopy); } bool ParCompactionManager::should_copy() { assert(action() != NotValid, "Action is not set"); return (action() == ParCompactionManager::Copy) || (action() == ParCompactionManager::CopyAndUpdate) || (action() == ParCompactionManager::UpdateAndCopy); } bool ParCompactionManager::should_verify_only() { assert(action() != NotValid, "Action is not set"); return action() == ParCompactionManager::VerifyUpdate; } bool ParCompactionManager::should_reset_only() { assert(action() != NotValid, "Action is not set"); return action() == ParCompactionManager::ResetObjects; } ParCompactionManager* ParCompactionManager::gc_thread_compaction_manager(int index) { assert(index >= 0 && index < (int)ParallelGCThreads, "index out of range"); assert(_manager_array != NULL, "Sanity"); return _manager_array[index]; } void ParCompactionManager::reset() { for(uint i=0; i<ParallelGCThreads+1; i++) { manager_array(i)->revisit_klass_stack()->clear(); manager_array(i)->revisit_mdo_stack()->clear(); } } void ParCompactionManager::follow_marking_stacks() { do { // Drain the overflow stack first, to allow stealing from the marking stack. oop obj; while (marking_stack()->pop_overflow(obj)) { obj->follow_contents(this); } while (marking_stack()->pop_local(obj)) { obj->follow_contents(this); } // Process ObjArrays one at a time to avoid marking stack bloat. ObjArrayTask task; if (_objarray_stack.pop_overflow(task)) { objArrayKlass* const k = (objArrayKlass*)task.obj()->blueprint(); k->oop_follow_contents(this, task.obj(), task.index()); } else if (_objarray_stack.pop_local(task)) { objArrayKlass* const k = (objArrayKlass*)task.obj()->blueprint(); k->oop_follow_contents(this, task.obj(), task.index()); } } while (!marking_stacks_empty()); assert(marking_stacks_empty(), "Sanity"); } void ParCompactionManager::drain_region_stacks() { do { // Drain overflow stack first so other threads can steal. size_t region_index; while (region_stack()->pop_overflow(region_index)) { PSParallelCompact::fill_and_update_region(this, region_index); } while (region_stack()->pop_local(region_index)) { PSParallelCompact::fill_and_update_region(this, region_index); } } while (!region_stack()->is_empty()); } #ifdef ASSERT bool ParCompactionManager::stacks_have_been_allocated() { return (revisit_klass_stack()->data_addr() != NULL && revisit_mdo_stack()->data_addr() != NULL); } #endif