| /* |
| * Copyright 2005-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| */ |
| |
| # include "incls/_precompiled.incl" |
| # include "incls/_pcTasks.cpp.incl" |
| |
| // |
| // ThreadRootsMarkingTask |
| // |
| |
| void ThreadRootsMarkingTask::do_it(GCTaskManager* manager, uint which) { |
| assert(Universe::heap()->is_gc_active(), "called outside gc"); |
| |
| ResourceMark rm; |
| |
| NOT_PRODUCT(TraceTime tm("ThreadRootsMarkingTask", |
| PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); |
| ParCompactionManager* cm = |
| ParCompactionManager::gc_thread_compaction_manager(which); |
| PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm); |
| |
| if (_java_thread != NULL) |
| _java_thread->oops_do(&mark_and_push_closure); |
| |
| if (_vm_thread != NULL) |
| _vm_thread->oops_do(&mark_and_push_closure); |
| |
| // Do the real work |
| cm->drain_marking_stacks(&mark_and_push_closure); |
| } |
| |
| |
| void MarkFromRootsTask::do_it(GCTaskManager* manager, uint which) { |
| assert(Universe::heap()->is_gc_active(), "called outside gc"); |
| |
| NOT_PRODUCT(TraceTime tm("MarkFromRootsTask", |
| PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); |
| ParCompactionManager* cm = |
| ParCompactionManager::gc_thread_compaction_manager(which); |
| // cm->allocate_stacks(); |
| assert(cm->stacks_have_been_allocated(), |
| "Stack space has not been allocated"); |
| PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm); |
| |
| switch (_root_type) { |
| case universe: |
| Universe::oops_do(&mark_and_push_closure); |
| break; |
| |
| case reference_processing: |
| ReferenceProcessor::oops_do(&mark_and_push_closure); |
| break; |
| |
| case jni_handles: |
| JNIHandles::oops_do(&mark_and_push_closure); |
| break; |
| |
| case threads: |
| { |
| ResourceMark rm; |
| Threads::oops_do(&mark_and_push_closure); |
| } |
| 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 vm_symbols: |
| vmSymbols::oops_do(&mark_and_push_closure); |
| break; |
| |
| default: |
| fatal("Unknown root type"); |
| } |
| |
| // Do the real work |
| cm->drain_marking_stacks(&mark_and_push_closure); |
| // cm->deallocate_stacks(); |
| } |
| |
| |
| // |
| // RefProcTaskProxy |
| // |
| |
| void RefProcTaskProxy::do_it(GCTaskManager* manager, uint which) |
| { |
| assert(Universe::heap()->is_gc_active(), "called outside gc"); |
| |
| NOT_PRODUCT(TraceTime tm("RefProcTask", |
| PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); |
| ParCompactionManager* cm = |
| ParCompactionManager::gc_thread_compaction_manager(which); |
| // cm->allocate_stacks(); |
| assert(cm->stacks_have_been_allocated(), |
| "Stack space has not been allocated"); |
| 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(); |
| TaskQueueSetSuper* qset = ParCompactionManager::chunk_array(); |
| ParallelTaskTerminator terminator(parallel_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<parallel_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(TraceTime tm("StealMarkingTask", |
| PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); |
| |
| ParCompactionManager* cm = |
| ParCompactionManager::gc_thread_compaction_manager(which); |
| PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm); |
| |
| oop obj = NULL; |
| int random_seed = 17; |
| while(true) { |
| if (ParCompactionManager::steal(which, &random_seed, obj)) { |
| obj->follow_contents(cm); |
| cm->drain_marking_stacks(&mark_and_push_closure); |
| } else { |
| if (terminator()->offer_termination()) { |
| break; |
| } |
| } |
| } |
| } |
| |
| // |
| // StealChunkCompactionTask |
| // |
| |
| |
| StealChunkCompactionTask::StealChunkCompactionTask(ParallelTaskTerminator* t) : |
| _terminator(t) {}; |
| |
| void StealChunkCompactionTask::do_it(GCTaskManager* manager, uint which) { |
| assert(Universe::heap()->is_gc_active(), "called outside gc"); |
| |
| NOT_PRODUCT(TraceTime tm("StealChunkCompactionTask", |
| PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); |
| |
| ParCompactionManager* cm = |
| ParCompactionManager::gc_thread_compaction_manager(which); |
| |
| // Has to drain stacks first because there may be chunks on |
| // preloaded onto the stack and this thread may never have |
| // done a draining task. Are the draining tasks needed? |
| |
| cm->drain_chunk_stacks(); |
| |
| size_t chunk_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, chunk_index)) { |
| PSParallelCompact::fill_and_update_chunk(cm, chunk_index); |
| cm->drain_chunk_stacks(); |
| } else { |
| if (terminator()->offer_termination()) { |
| break; |
| } |
| // Go around again. |
| } |
| } |
| return; |
| } |
| |
| UpdateDensePrefixTask::UpdateDensePrefixTask( |
| PSParallelCompact::SpaceId space_id, |
| size_t chunk_index_start, |
| size_t chunk_index_end) : |
| _space_id(space_id), _chunk_index_start(chunk_index_start), |
| _chunk_index_end(chunk_index_end) |
| {} |
| |
| void UpdateDensePrefixTask::do_it(GCTaskManager* manager, uint which) { |
| |
| NOT_PRODUCT(TraceTime tm("UpdateDensePrefixTask", |
| PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); |
| |
| ParCompactionManager* cm = |
| ParCompactionManager::gc_thread_compaction_manager(which); |
| |
| PSParallelCompact::update_and_deadwood_in_dense_prefix(cm, |
| _space_id, |
| _chunk_index_start, |
| _chunk_index_end); |
| } |
| |
| void DrainStacksCompactionTask::do_it(GCTaskManager* manager, uint which) { |
| assert(Universe::heap()->is_gc_active(), "called outside gc"); |
| |
| NOT_PRODUCT(TraceTime tm("DrainStacksCompactionTask", |
| PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); |
| |
| ParCompactionManager* cm = |
| ParCompactionManager::gc_thread_compaction_manager(which); |
| |
| // Process any chunks already in the compaction managers stacks. |
| cm->drain_chunk_stacks(); |
| } |