Mercurial > hg > graal-compiler
view src/share/vm/gc_implementation/parallelScavenge/pcTasks.cpp @ 19739:6a3832494e24
Check for derived pointers before passing BytecodeFrame into HotSpot
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Mon, 09 Mar 2015 13:07:18 -0700 |
parents | 78bbf4d43a14 |
children | 0982ec23da03 |
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/* * Copyright (c) 2005, 2014, 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 "classfile/systemDictionary.hpp" #include "code/codeCache.hpp" #include "gc_implementation/parallelScavenge/pcTasks.hpp" #include "gc_implementation/parallelScavenge/psParallelCompact.hpp" #include "gc_implementation/shared/gcTimer.hpp" #include "gc_implementation/shared/gcTraceTime.hpp" #include "gc_interface/collectedHeap.hpp" #include "memory/universe.hpp" #include "oops/objArrayKlass.inline.hpp" #include "oops/oop.inline.hpp" #include "oops/oop.pcgc.inline.hpp" #include "prims/jvmtiExport.hpp" #include "runtime/fprofiler.hpp" #include "runtime/jniHandles.hpp" #include "runtime/thread.hpp" #include "runtime/vmThread.hpp" #include "services/management.hpp" PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC // // ThreadRootsMarkingTask // void ThreadRootsMarkingTask::do_it(GCTaskManager* manager, uint which) { assert(Universe::heap()->is_gc_active(), "called outside gc"); ResourceMark rm; NOT_PRODUCT(GCTraceTime tm("ThreadRootsMarkingTask", PrintGCDetails && TraceParallelOldGCTasks, true, NULL)); ParCompactionManager* cm = ParCompactionManager::gc_thread_compaction_manager(which); PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm); CLDToOopClosure mark_and_push_from_clds(&mark_and_push_closure, true); CodeBlobToOopClosure mark_and_push_in_blobs(&mark_and_push_closure, /*do_marking=*/ true); if (_java_thread != NULL) _java_thread->oops_do( &mark_and_push_closure, &mark_and_push_from_clds, &mark_and_push_in_blobs); if (_vm_thread != NULL) _vm_thread->oops_do( &mark_and_push_closure, &mark_and_push_from_clds, &mark_and_push_in_blobs); // Do the real work cm->follow_marking_stacks(); } void MarkFromRootsTask::do_it(GCTaskManager* manager, uint which) { assert(Universe::heap()->is_gc_active(), "called outside gc"); NOT_PRODUCT(GCTraceTime tm("MarkFromRootsTask", PrintGCDetails && TraceParallelOldGCTasks, true, NULL)); ParCompactionManager* cm = ParCompactionManager::gc_thread_compaction_manager(which); PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm); PSParallelCompact::FollowKlassClosure follow_klass_closure(&mark_and_push_closure); switch (_root_type) { case universe: Universe::oops_do(&mark_and_push_closure); break; case jni_handles: JNIHandles::oops_do(&mark_and_push_closure); break; case threads: { ResourceMark rm; CodeBlobToOopClosure each_active_code_blob(&mark_and_push_closure, /*do_marking=*/ true); CLDToOopClosure mark_and_push_from_cld(&mark_and_push_closure); Threads::oops_do(&mark_and_push_closure, &mark_and_push_from_cld, &each_active_code_blob); } break; case object_synchronizer: ObjectSynchronizer::oops_do(&mark_and_push_closure); break; case flat_profiler: FlatProfiler::oops_do(&mark_and_push_closure); break; case management: Management::oops_do(&mark_and_push_closure); break; case jvmti: JvmtiExport::oops_do(&mark_and_push_closure); break; case system_dictionary: SystemDictionary::always_strong_oops_do(&mark_and_push_closure); break; case class_loader_data: ClassLoaderDataGraph::always_strong_oops_do(&mark_and_push_closure, &follow_klass_closure, true); break; case code_cache: // Do not treat nmethods as strong roots for mark/sweep, since we can unload them. //CodeCache::scavenge_root_nmethods_do(CodeBlobToOopClosure(&mark_and_push_closure)); break; default: fatal("Unknown root type"); } // Do the real work cm->follow_marking_stacks(); } // // RefProcTaskProxy // void RefProcTaskProxy::do_it(GCTaskManager* manager, uint which) { assert(Universe::heap()->is_gc_active(), "called outside gc"); NOT_PRODUCT(GCTraceTime tm("RefProcTask", PrintGCDetails && TraceParallelOldGCTasks, true, NULL)); ParCompactionManager* cm = ParCompactionManager::gc_thread_compaction_manager(which); PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm); PSParallelCompact::FollowStackClosure follow_stack_closure(cm); _rp_task.work(_work_id, *PSParallelCompact::is_alive_closure(), mark_and_push_closure, follow_stack_closure); } // // RefProcTaskExecutor // void RefProcTaskExecutor::execute(ProcessTask& task) { ParallelScavengeHeap* heap = PSParallelCompact::gc_heap(); uint parallel_gc_threads = heap->gc_task_manager()->workers(); uint active_gc_threads = heap->gc_task_manager()->active_workers(); RegionTaskQueueSet* qset = ParCompactionManager::region_array(); ParallelTaskTerminator terminator(active_gc_threads, qset); GCTaskQueue* q = GCTaskQueue::create(); for(uint i=0; i<parallel_gc_threads; i++) { q->enqueue(new RefProcTaskProxy(task, i)); } if (task.marks_oops_alive()) { if (parallel_gc_threads>1) { for (uint j=0; j<active_gc_threads; j++) { q->enqueue(new StealMarkingTask(&terminator)); } } } PSParallelCompact::gc_task_manager()->execute_and_wait(q); } void RefProcTaskExecutor::execute(EnqueueTask& task) { ParallelScavengeHeap* heap = PSParallelCompact::gc_heap(); uint parallel_gc_threads = heap->gc_task_manager()->workers(); GCTaskQueue* q = GCTaskQueue::create(); for(uint i=0; i<parallel_gc_threads; i++) { q->enqueue(new RefEnqueueTaskProxy(task, i)); } PSParallelCompact::gc_task_manager()->execute_and_wait(q); } // // StealMarkingTask // StealMarkingTask::StealMarkingTask(ParallelTaskTerminator* t) : _terminator(t) {} void StealMarkingTask::do_it(GCTaskManager* manager, uint which) { assert(Universe::heap()->is_gc_active(), "called outside gc"); NOT_PRODUCT(GCTraceTime tm("StealMarkingTask", PrintGCDetails && TraceParallelOldGCTasks, true, NULL)); ParCompactionManager* cm = ParCompactionManager::gc_thread_compaction_manager(which); PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm); oop obj = NULL; ObjArrayTask task; int random_seed = 17; do { while (ParCompactionManager::steal_objarray(which, &random_seed, task)) { ObjArrayKlass* k = (ObjArrayKlass*)task.obj()->klass(); k->oop_follow_contents(cm, task.obj(), task.index()); cm->follow_marking_stacks(); } while (ParCompactionManager::steal(which, &random_seed, obj)) { obj->follow_contents(cm); cm->follow_marking_stacks(); } } while (!terminator()->offer_termination()); } // // StealRegionCompactionTask // StealRegionCompactionTask::StealRegionCompactionTask(ParallelTaskTerminator* t): _terminator(t) {} void StealRegionCompactionTask::do_it(GCTaskManager* manager, uint which) { assert(Universe::heap()->is_gc_active(), "called outside gc"); NOT_PRODUCT(GCTraceTime tm("StealRegionCompactionTask", PrintGCDetails && TraceParallelOldGCTasks, true, NULL)); ParCompactionManager* cm = ParCompactionManager::gc_thread_compaction_manager(which); // If not all threads are active, get a draining stack // from the list. Else, just use this threads draining stack. uint which_stack_index; bool use_all_workers = manager->all_workers_active(); if (use_all_workers) { which_stack_index = which; assert(manager->active_workers() == ParallelGCThreads, err_msg("all_workers_active has been incorrectly set: " " active %d ParallelGCThreads %d", manager->active_workers(), ParallelGCThreads)); } else { which_stack_index = ParCompactionManager::pop_recycled_stack_index(); } cm->set_region_stack_index(which_stack_index); cm->set_region_stack(ParCompactionManager::region_list(which_stack_index)); if (TraceDynamicGCThreads) { gclog_or_tty->print_cr("StealRegionCompactionTask::do_it " "region_stack_index %d region_stack = 0x%x " " empty (%d) use all workers %d", which_stack_index, ParCompactionManager::region_list(which_stack_index), cm->region_stack()->is_empty(), use_all_workers); } // Has to drain stacks first because there may be regions on // preloaded onto the stack and this thread may never have // done a draining task. Are the draining tasks needed? cm->drain_region_stacks(); size_t region_index = 0; int random_seed = 17; // If we're the termination task, try 10 rounds of stealing before // setting the termination flag while(true) { if (ParCompactionManager::steal(which, &random_seed, region_index)) { PSParallelCompact::fill_and_update_region(cm, region_index); cm->drain_region_stacks(); } else { if (terminator()->offer_termination()) { break; } // Go around again. } } return; } UpdateDensePrefixTask::UpdateDensePrefixTask( PSParallelCompact::SpaceId space_id, size_t region_index_start, size_t region_index_end) : _space_id(space_id), _region_index_start(region_index_start), _region_index_end(region_index_end) {} void UpdateDensePrefixTask::do_it(GCTaskManager* manager, uint which) { NOT_PRODUCT(GCTraceTime tm("UpdateDensePrefixTask", PrintGCDetails && TraceParallelOldGCTasks, true, NULL)); ParCompactionManager* cm = ParCompactionManager::gc_thread_compaction_manager(which); PSParallelCompact::update_and_deadwood_in_dense_prefix(cm, _space_id, _region_index_start, _region_index_end); } void DrainStacksCompactionTask::do_it(GCTaskManager* manager, uint which) { assert(Universe::heap()->is_gc_active(), "called outside gc"); NOT_PRODUCT(GCTraceTime tm("DrainStacksCompactionTask", PrintGCDetails && TraceParallelOldGCTasks, true, NULL)); ParCompactionManager* cm = ParCompactionManager::gc_thread_compaction_manager(which); uint which_stack_index; bool use_all_workers = manager->all_workers_active(); if (use_all_workers) { which_stack_index = which; assert(manager->active_workers() == ParallelGCThreads, err_msg("all_workers_active has been incorrectly set: " " active %d ParallelGCThreads %d", manager->active_workers(), ParallelGCThreads)); } else { which_stack_index = stack_index(); } cm->set_region_stack(ParCompactionManager::region_list(which_stack_index)); if (TraceDynamicGCThreads) { gclog_or_tty->print_cr("DrainStacksCompactionTask::do_it which = %d " "which_stack_index = %d/empty(%d) " "use all workers %d", which, which_stack_index, cm->region_stack()->is_empty(), use_all_workers); } cm->set_region_stack_index(which_stack_index); // Process any regions already in the compaction managers stacks. cm->drain_region_stacks(); assert(cm->region_stack()->is_empty(), "Not empty"); if (!use_all_workers) { // Always give up the region stack. assert(cm->region_stack() == ParCompactionManager::region_list(cm->region_stack_index()), "region_stack and region_stack_index are inconsistent"); ParCompactionManager::push_recycled_stack_index(cm->region_stack_index()); if (TraceDynamicGCThreads) { void* old_region_stack = (void*) cm->region_stack(); int old_region_stack_index = cm->region_stack_index(); gclog_or_tty->print_cr("Pushing region stack 0x%x/%d", old_region_stack, old_region_stack_index); } cm->set_region_stack(NULL); cm->set_region_stack_index((uint)max_uintx); } }