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8079792: GC directory structure cleanup
Reviewed-by: brutisso, stefank, david
This commit is contained in:
Per Lidén
parent
042902811c
commit
4dc240f785
521 changed files with 2481 additions and 2573 deletions
377
hotspot/src/share/vm/gc/parallel/pcTasks.cpp
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377
hotspot/src/share/vm/gc/parallel/pcTasks.cpp
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/*
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* Copyright (c) 2005, 2015, 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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*/
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#include "precompiled.hpp"
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#include "classfile/systemDictionary.hpp"
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#include "code/codeCache.hpp"
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#include "gc/parallel/parallelScavengeHeap.hpp"
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#include "gc/parallel/pcTasks.hpp"
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#include "gc/parallel/psCompactionManager.inline.hpp"
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#include "gc/parallel/psParallelCompact.hpp"
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#include "gc/shared/collectedHeap.hpp"
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#include "gc/shared/gcTimer.hpp"
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#include "gc/shared/gcTraceTime.hpp"
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#include "memory/universe.hpp"
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#include "oops/objArrayKlass.inline.hpp"
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#include "oops/oop.inline.hpp"
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#include "prims/jvmtiExport.hpp"
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#include "runtime/fprofiler.hpp"
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#include "runtime/jniHandles.hpp"
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#include "runtime/thread.hpp"
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#include "runtime/vmThread.hpp"
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#include "services/management.hpp"
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#include "utilities/stack.inline.hpp"
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//
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// ThreadRootsMarkingTask
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//
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void ThreadRootsMarkingTask::do_it(GCTaskManager* manager, uint which) {
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assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc");
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ResourceMark rm;
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NOT_PRODUCT(GCTraceTime tm("ThreadRootsMarkingTask",
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PrintGCDetails && TraceParallelOldGCTasks, true, NULL, PSParallelCompact::gc_tracer()->gc_id()));
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ParCompactionManager* cm =
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ParCompactionManager::gc_thread_compaction_manager(which);
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ParCompactionManager::MarkAndPushClosure mark_and_push_closure(cm);
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CLDToOopClosure mark_and_push_from_clds(&mark_and_push_closure, true);
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MarkingCodeBlobClosure mark_and_push_in_blobs(&mark_and_push_closure, !CodeBlobToOopClosure::FixRelocations);
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if (_java_thread != NULL)
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_java_thread->oops_do(
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&mark_and_push_closure,
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&mark_and_push_from_clds,
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&mark_and_push_in_blobs);
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if (_vm_thread != NULL)
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_vm_thread->oops_do(
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&mark_and_push_closure,
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&mark_and_push_from_clds,
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&mark_and_push_in_blobs);
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// Do the real work
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cm->follow_marking_stacks();
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}
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void MarkFromRootsTask::do_it(GCTaskManager* manager, uint which) {
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assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc");
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NOT_PRODUCT(GCTraceTime tm("MarkFromRootsTask",
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PrintGCDetails && TraceParallelOldGCTasks, true, NULL, PSParallelCompact::gc_tracer()->gc_id()));
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ParCompactionManager* cm =
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ParCompactionManager::gc_thread_compaction_manager(which);
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ParCompactionManager::MarkAndPushClosure mark_and_push_closure(cm);
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ParCompactionManager::FollowKlassClosure follow_klass_closure(&mark_and_push_closure);
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switch (_root_type) {
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case universe:
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Universe::oops_do(&mark_and_push_closure);
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break;
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case jni_handles:
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JNIHandles::oops_do(&mark_and_push_closure);
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break;
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case threads:
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{
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ResourceMark rm;
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MarkingCodeBlobClosure each_active_code_blob(&mark_and_push_closure, !CodeBlobToOopClosure::FixRelocations);
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CLDToOopClosure mark_and_push_from_cld(&mark_and_push_closure);
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Threads::oops_do(&mark_and_push_closure, &mark_and_push_from_cld, &each_active_code_blob);
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}
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break;
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case object_synchronizer:
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ObjectSynchronizer::oops_do(&mark_and_push_closure);
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break;
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case flat_profiler:
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FlatProfiler::oops_do(&mark_and_push_closure);
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break;
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case management:
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Management::oops_do(&mark_and_push_closure);
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break;
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case jvmti:
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JvmtiExport::oops_do(&mark_and_push_closure);
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break;
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case system_dictionary:
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SystemDictionary::always_strong_oops_do(&mark_and_push_closure);
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break;
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case class_loader_data:
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ClassLoaderDataGraph::always_strong_oops_do(&mark_and_push_closure, &follow_klass_closure, true);
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break;
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case code_cache:
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// Do not treat nmethods as strong roots for mark/sweep, since we can unload them.
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//CodeCache::scavenge_root_nmethods_do(CodeBlobToOopClosure(&mark_and_push_closure));
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break;
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default:
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fatal("Unknown root type");
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}
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// Do the real work
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cm->follow_marking_stacks();
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}
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//
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// RefProcTaskProxy
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//
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void RefProcTaskProxy::do_it(GCTaskManager* manager, uint which)
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{
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assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc");
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NOT_PRODUCT(GCTraceTime tm("RefProcTask",
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PrintGCDetails && TraceParallelOldGCTasks, true, NULL, PSParallelCompact::gc_tracer()->gc_id()));
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ParCompactionManager* cm =
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ParCompactionManager::gc_thread_compaction_manager(which);
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ParCompactionManager::MarkAndPushClosure mark_and_push_closure(cm);
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ParCompactionManager::FollowStackClosure follow_stack_closure(cm);
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_rp_task.work(_work_id, *PSParallelCompact::is_alive_closure(),
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mark_and_push_closure, follow_stack_closure);
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}
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//
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// RefProcTaskExecutor
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//
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void RefProcTaskExecutor::execute(ProcessTask& task)
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{
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ParallelScavengeHeap* heap = ParallelScavengeHeap::heap();
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uint parallel_gc_threads = heap->gc_task_manager()->workers();
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uint active_gc_threads = heap->gc_task_manager()->active_workers();
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RegionTaskQueueSet* qset = ParCompactionManager::region_array();
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ParallelTaskTerminator terminator(active_gc_threads, qset);
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GCTaskQueue* q = GCTaskQueue::create();
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for(uint i=0; i<parallel_gc_threads; i++) {
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q->enqueue(new RefProcTaskProxy(task, i));
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}
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if (task.marks_oops_alive()) {
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if (parallel_gc_threads>1) {
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for (uint j=0; j<active_gc_threads; j++) {
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q->enqueue(new StealMarkingTask(&terminator));
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}
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}
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}
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PSParallelCompact::gc_task_manager()->execute_and_wait(q);
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}
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void RefProcTaskExecutor::execute(EnqueueTask& task)
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{
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ParallelScavengeHeap* heap = ParallelScavengeHeap::heap();
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uint parallel_gc_threads = heap->gc_task_manager()->workers();
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GCTaskQueue* q = GCTaskQueue::create();
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for(uint i=0; i<parallel_gc_threads; i++) {
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q->enqueue(new RefEnqueueTaskProxy(task, i));
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}
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PSParallelCompact::gc_task_manager()->execute_and_wait(q);
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}
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//
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// StealMarkingTask
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//
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StealMarkingTask::StealMarkingTask(ParallelTaskTerminator* t) :
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_terminator(t) {}
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void StealMarkingTask::do_it(GCTaskManager* manager, uint which) {
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assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc");
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NOT_PRODUCT(GCTraceTime tm("StealMarkingTask",
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PrintGCDetails && TraceParallelOldGCTasks, true, NULL, PSParallelCompact::gc_tracer()->gc_id()));
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ParCompactionManager* cm =
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ParCompactionManager::gc_thread_compaction_manager(which);
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ParCompactionManager::MarkAndPushClosure mark_and_push_closure(cm);
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oop obj = NULL;
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ObjArrayTask task;
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int random_seed = 17;
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do {
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while (ParCompactionManager::steal_objarray(which, &random_seed, task)) {
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cm->follow_contents((objArrayOop)task.obj(), task.index());
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cm->follow_marking_stacks();
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}
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while (ParCompactionManager::steal(which, &random_seed, obj)) {
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cm->follow_contents(obj);
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cm->follow_marking_stacks();
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}
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} while (!terminator()->offer_termination());
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}
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//
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// StealRegionCompactionTask
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//
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StealRegionCompactionTask::StealRegionCompactionTask(ParallelTaskTerminator* t):
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_terminator(t) {}
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void StealRegionCompactionTask::do_it(GCTaskManager* manager, uint which) {
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assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc");
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NOT_PRODUCT(GCTraceTime tm("StealRegionCompactionTask",
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PrintGCDetails && TraceParallelOldGCTasks, true, NULL, PSParallelCompact::gc_tracer()->gc_id()));
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ParCompactionManager* cm =
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ParCompactionManager::gc_thread_compaction_manager(which);
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// If not all threads are active, get a draining stack
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// from the list. Else, just use this threads draining stack.
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uint which_stack_index;
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bool use_all_workers = manager->all_workers_active();
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if (use_all_workers) {
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which_stack_index = which;
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assert(manager->active_workers() == ParallelGCThreads,
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err_msg("all_workers_active has been incorrectly set: "
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" active %d ParallelGCThreads " UINTX_FORMAT, manager->active_workers(),
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ParallelGCThreads));
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} else {
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which_stack_index = ParCompactionManager::pop_recycled_stack_index();
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}
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cm->set_region_stack_index(which_stack_index);
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cm->set_region_stack(ParCompactionManager::region_list(which_stack_index));
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if (TraceDynamicGCThreads) {
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gclog_or_tty->print_cr("StealRegionCompactionTask::do_it "
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"region_stack_index %d region_stack = " PTR_FORMAT " "
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" empty (%d) use all workers %d",
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which_stack_index, p2i(ParCompactionManager::region_list(which_stack_index)),
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cm->region_stack()->is_empty(),
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use_all_workers);
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}
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// Has to drain stacks first because there may be regions on
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// preloaded onto the stack and this thread may never have
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// done a draining task. Are the draining tasks needed?
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cm->drain_region_stacks();
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size_t region_index = 0;
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int random_seed = 17;
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// If we're the termination task, try 10 rounds of stealing before
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// setting the termination flag
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while(true) {
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if (ParCompactionManager::steal(which, &random_seed, region_index)) {
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PSParallelCompact::fill_and_update_region(cm, region_index);
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cm->drain_region_stacks();
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} else {
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if (terminator()->offer_termination()) {
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break;
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}
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// Go around again.
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}
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}
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return;
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}
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UpdateDensePrefixTask::UpdateDensePrefixTask(
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PSParallelCompact::SpaceId space_id,
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size_t region_index_start,
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size_t region_index_end) :
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_space_id(space_id), _region_index_start(region_index_start),
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_region_index_end(region_index_end) {}
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void UpdateDensePrefixTask::do_it(GCTaskManager* manager, uint which) {
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NOT_PRODUCT(GCTraceTime tm("UpdateDensePrefixTask",
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PrintGCDetails && TraceParallelOldGCTasks, true, NULL, PSParallelCompact::gc_tracer()->gc_id()));
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ParCompactionManager* cm =
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ParCompactionManager::gc_thread_compaction_manager(which);
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PSParallelCompact::update_and_deadwood_in_dense_prefix(cm,
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_space_id,
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_region_index_start,
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_region_index_end);
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}
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void DrainStacksCompactionTask::do_it(GCTaskManager* manager, uint which) {
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assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc");
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NOT_PRODUCT(GCTraceTime tm("DrainStacksCompactionTask",
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PrintGCDetails && TraceParallelOldGCTasks, true, NULL, PSParallelCompact::gc_tracer()->gc_id()));
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ParCompactionManager* cm =
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ParCompactionManager::gc_thread_compaction_manager(which);
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uint which_stack_index;
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bool use_all_workers = manager->all_workers_active();
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if (use_all_workers) {
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which_stack_index = which;
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assert(manager->active_workers() == ParallelGCThreads,
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err_msg("all_workers_active has been incorrectly set: "
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" active %d ParallelGCThreads " UINTX_FORMAT, manager->active_workers(),
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ParallelGCThreads));
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} else {
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which_stack_index = stack_index();
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}
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cm->set_region_stack(ParCompactionManager::region_list(which_stack_index));
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if (TraceDynamicGCThreads) {
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gclog_or_tty->print_cr("DrainStacksCompactionTask::do_it which = %d "
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"which_stack_index = %d/empty(%d) "
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"use all workers %d",
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which, which_stack_index,
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cm->region_stack()->is_empty(),
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use_all_workers);
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}
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cm->set_region_stack_index(which_stack_index);
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// Process any regions already in the compaction managers stacks.
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cm->drain_region_stacks();
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assert(cm->region_stack()->is_empty(), "Not empty");
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if (!use_all_workers) {
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// Always give up the region stack.
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assert(cm->region_stack() ==
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ParCompactionManager::region_list(cm->region_stack_index()),
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"region_stack and region_stack_index are inconsistent");
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ParCompactionManager::push_recycled_stack_index(cm->region_stack_index());
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if (TraceDynamicGCThreads) {
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void* old_region_stack = (void*) cm->region_stack();
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int old_region_stack_index = cm->region_stack_index();
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gclog_or_tty->print_cr("Pushing region stack " PTR_FORMAT "/%d",
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p2i(old_region_stack), old_region_stack_index);
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}
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cm->set_region_stack(NULL);
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cm->set_region_stack_index((uint)max_uintx);
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}
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}
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