duke@435: /*
xdono@631:  * Copyright 2005-2008 Sun Microsystems, Inc.  All Rights Reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
duke@435:  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435:  * CA 95054 USA or visit www.sun.com if you need additional information or
duke@435:  * have any questions.
duke@435:  *
duke@435:  */
duke@435: 
duke@435: # include "incls/_precompiled.incl"
duke@435: # include "incls/_pcTasks.cpp.incl"
duke@435: 
duke@435: //
duke@435: // ThreadRootsMarkingTask
duke@435: //
duke@435: 
duke@435: void ThreadRootsMarkingTask::do_it(GCTaskManager* manager, uint which) {
duke@435:   assert(Universe::heap()->is_gc_active(), "called outside gc");
duke@435: 
duke@435:   ResourceMark rm;
duke@435: 
duke@435:   NOT_PRODUCT(TraceTime tm("ThreadRootsMarkingTask",
duke@435:     PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty));
duke@435:   ParCompactionManager* cm =
duke@435:     ParCompactionManager::gc_thread_compaction_manager(which);
duke@435:   PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm);
duke@435: 
duke@435:   if (_java_thread != NULL)
duke@435:     _java_thread->oops_do(&mark_and_push_closure);
duke@435: 
duke@435:   if (_vm_thread != NULL)
duke@435:     _vm_thread->oops_do(&mark_and_push_closure);
duke@435: 
duke@435:   // Do the real work
duke@435:   cm->drain_marking_stacks(&mark_and_push_closure);
duke@435: }
duke@435: 
duke@435: 
duke@435: void MarkFromRootsTask::do_it(GCTaskManager* manager, uint which) {
duke@435:   assert(Universe::heap()->is_gc_active(), "called outside gc");
duke@435: 
duke@435:   NOT_PRODUCT(TraceTime tm("MarkFromRootsTask",
duke@435:     PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty));
duke@435:   ParCompactionManager* cm =
duke@435:     ParCompactionManager::gc_thread_compaction_manager(which);
duke@435:   // cm->allocate_stacks();
duke@435:   assert(cm->stacks_have_been_allocated(),
duke@435:     "Stack space has not been allocated");
duke@435:   PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm);
duke@435: 
duke@435:   switch (_root_type) {
duke@435:     case universe:
duke@435:       Universe::oops_do(&mark_and_push_closure);
duke@435:       break;
duke@435: 
duke@435:     case reference_processing:
duke@435:       ReferenceProcessor::oops_do(&mark_and_push_closure);
duke@435:       break;
duke@435: 
duke@435:     case jni_handles:
duke@435:       JNIHandles::oops_do(&mark_and_push_closure);
duke@435:       break;
duke@435: 
duke@435:     case threads:
duke@435:     {
duke@435:       ResourceMark rm;
duke@435:       Threads::oops_do(&mark_and_push_closure);
duke@435:     }
duke@435:     break;
duke@435: 
duke@435:     case object_synchronizer:
duke@435:       ObjectSynchronizer::oops_do(&mark_and_push_closure);
duke@435:       break;
duke@435: 
duke@435:     case flat_profiler:
duke@435:       FlatProfiler::oops_do(&mark_and_push_closure);
duke@435:       break;
duke@435: 
duke@435:     case management:
duke@435:       Management::oops_do(&mark_and_push_closure);
duke@435:       break;
duke@435: 
duke@435:     case jvmti:
duke@435:       JvmtiExport::oops_do(&mark_and_push_closure);
duke@435:       break;
duke@435: 
duke@435:     case system_dictionary:
duke@435:       SystemDictionary::always_strong_oops_do(&mark_and_push_closure);
duke@435:       break;
duke@435: 
duke@435:     case vm_symbols:
duke@435:       vmSymbols::oops_do(&mark_and_push_closure);
duke@435:       break;
duke@435: 
duke@435:     default:
duke@435:       fatal("Unknown root type");
duke@435:   }
duke@435: 
duke@435:   // Do the real work
duke@435:   cm->drain_marking_stacks(&mark_and_push_closure);
duke@435:   // cm->deallocate_stacks();
duke@435: }
duke@435: 
duke@435: 
duke@435: //
duke@435: // RefProcTaskProxy
duke@435: //
duke@435: 
duke@435: void RefProcTaskProxy::do_it(GCTaskManager* manager, uint which)
duke@435: {
duke@435:   assert(Universe::heap()->is_gc_active(), "called outside gc");
duke@435: 
duke@435:   NOT_PRODUCT(TraceTime tm("RefProcTask",
duke@435:     PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty));
duke@435:   ParCompactionManager* cm =
duke@435:     ParCompactionManager::gc_thread_compaction_manager(which);
duke@435:   // cm->allocate_stacks();
duke@435:   assert(cm->stacks_have_been_allocated(),
duke@435:     "Stack space has not been allocated");
duke@435:   PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm);
duke@435:   PSParallelCompact::FollowStackClosure follow_stack_closure(cm);
duke@435:   _rp_task.work(_work_id, *PSParallelCompact::is_alive_closure(),
duke@435:                 mark_and_push_closure, follow_stack_closure);
duke@435: }
duke@435: 
duke@435: //
duke@435: // RefProcTaskExecutor
duke@435: //
duke@435: 
duke@435: void RefProcTaskExecutor::execute(ProcessTask& task)
duke@435: {
duke@435:   ParallelScavengeHeap* heap = PSParallelCompact::gc_heap();
duke@435:   uint parallel_gc_threads = heap->gc_task_manager()->workers();
coleenp@548:   ChunkTaskQueueSet* qset = ParCompactionManager::chunk_array();
duke@435:   ParallelTaskTerminator terminator(parallel_gc_threads, qset);
duke@435:   GCTaskQueue* q = GCTaskQueue::create();
duke@435:   for(uint i=0; i<parallel_gc_threads; i++) {
duke@435:     q->enqueue(new RefProcTaskProxy(task, i));
duke@435:   }
duke@435:   if (task.marks_oops_alive()) {
duke@435:     if (parallel_gc_threads>1) {
duke@435:       for (uint j=0; j<parallel_gc_threads; j++) {
duke@435:         q->enqueue(new StealMarkingTask(&terminator));
duke@435:       }
duke@435:     }
duke@435:   }
duke@435:   PSParallelCompact::gc_task_manager()->execute_and_wait(q);
duke@435: }
duke@435: 
duke@435: void RefProcTaskExecutor::execute(EnqueueTask& task)
duke@435: {
duke@435:   ParallelScavengeHeap* heap = PSParallelCompact::gc_heap();
duke@435:   uint parallel_gc_threads = heap->gc_task_manager()->workers();
duke@435:   GCTaskQueue* q = GCTaskQueue::create();
duke@435:   for(uint i=0; i<parallel_gc_threads; i++) {
duke@435:     q->enqueue(new RefEnqueueTaskProxy(task, i));
duke@435:   }
duke@435:   PSParallelCompact::gc_task_manager()->execute_and_wait(q);
duke@435: }
duke@435: 
duke@435: //
duke@435: // StealMarkingTask
duke@435: //
duke@435: 
duke@435: StealMarkingTask::StealMarkingTask(ParallelTaskTerminator* t) :
duke@435:   _terminator(t) {}
duke@435: 
duke@435: void StealMarkingTask::do_it(GCTaskManager* manager, uint which) {
duke@435:   assert(Universe::heap()->is_gc_active(), "called outside gc");
duke@435: 
duke@435:   NOT_PRODUCT(TraceTime tm("StealMarkingTask",
duke@435:     PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty));
duke@435: 
duke@435:   ParCompactionManager* cm =
duke@435:     ParCompactionManager::gc_thread_compaction_manager(which);
duke@435:   PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm);
duke@435: 
duke@435:   oop obj = NULL;
duke@435:   int random_seed = 17;
duke@435:   while(true) {
duke@435:     if (ParCompactionManager::steal(which, &random_seed, obj)) {
duke@435:       obj->follow_contents(cm);
duke@435:       cm->drain_marking_stacks(&mark_and_push_closure);
duke@435:     } else {
duke@435:       if (terminator()->offer_termination()) {
duke@435:         break;
duke@435:       }
duke@435:     }
duke@435:   }
duke@435: }
duke@435: 
duke@435: //
duke@435: // StealChunkCompactionTask
duke@435: //
duke@435: 
duke@435: 
duke@435: StealChunkCompactionTask::StealChunkCompactionTask(ParallelTaskTerminator* t) :
duke@435:   _terminator(t) {};
duke@435: 
duke@435: void StealChunkCompactionTask::do_it(GCTaskManager* manager, uint which) {
duke@435:   assert(Universe::heap()->is_gc_active(), "called outside gc");
duke@435: 
duke@435:   NOT_PRODUCT(TraceTime tm("StealChunkCompactionTask",
duke@435:     PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty));
duke@435: 
duke@435:   ParCompactionManager* cm =
duke@435:     ParCompactionManager::gc_thread_compaction_manager(which);
duke@435: 
duke@435:   // Has to drain stacks first because there may be chunks on
duke@435:   // preloaded onto the stack and this thread may never have
duke@435:   // done a draining task.  Are the draining tasks needed?
duke@435: 
duke@435:   cm->drain_chunk_stacks();
duke@435: 
duke@435:   size_t chunk_index = 0;
duke@435:   int random_seed = 17;
duke@435: 
duke@435:   // If we're the termination task, try 10 rounds of stealing before
duke@435:   // setting the termination flag
duke@435: 
duke@435:   while(true) {
duke@435:     if (ParCompactionManager::steal(which, &random_seed, chunk_index)) {
duke@435:       PSParallelCompact::fill_and_update_chunk(cm, chunk_index);
duke@435:       cm->drain_chunk_stacks();
duke@435:     } else {
duke@435:       if (terminator()->offer_termination()) {
duke@435:         break;
duke@435:       }
duke@435:       // Go around again.
duke@435:     }
duke@435:   }
duke@435:   return;
duke@435: }
duke@435: 
duke@435: UpdateDensePrefixTask::UpdateDensePrefixTask(
duke@435:                                    PSParallelCompact::SpaceId space_id,
duke@435:                                    size_t chunk_index_start,
duke@435:                                    size_t chunk_index_end) :
duke@435:   _space_id(space_id), _chunk_index_start(chunk_index_start),
duke@435:   _chunk_index_end(chunk_index_end)
duke@435: {}
duke@435: 
duke@435: void UpdateDensePrefixTask::do_it(GCTaskManager* manager, uint which) {
duke@435: 
duke@435:   NOT_PRODUCT(TraceTime tm("UpdateDensePrefixTask",
duke@435:     PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty));
duke@435: 
duke@435:   ParCompactionManager* cm =
duke@435:     ParCompactionManager::gc_thread_compaction_manager(which);
duke@435: 
duke@435:   PSParallelCompact::update_and_deadwood_in_dense_prefix(cm,
duke@435:                                                          _space_id,
duke@435:                                                          _chunk_index_start,
duke@435:                                                          _chunk_index_end);
duke@435: }
duke@435: 
duke@435: void DrainStacksCompactionTask::do_it(GCTaskManager* manager, uint which) {
duke@435:   assert(Universe::heap()->is_gc_active(), "called outside gc");
duke@435: 
duke@435:   NOT_PRODUCT(TraceTime tm("DrainStacksCompactionTask",
duke@435:     PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty));
duke@435: 
duke@435:   ParCompactionManager* cm =
duke@435:     ParCompactionManager::gc_thread_compaction_manager(which);
duke@435: 
duke@435:   // Process any chunks already in the compaction managers stacks.
duke@435:   cm->drain_chunk_stacks();
duke@435: }