Mercurial > hg > truffle
view src/share/vm/gc_implementation/parallelScavenge/psTasks.cpp @ 1294:7de45b5044c3
6932270: Allow Java's ELF symtab reader to use separate debuginfo files
Reviewed-by: never
Contributed-by: Andrew Haley <aph@redhat.com>
author | never |
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date | Tue, 09 Mar 2010 11:02:39 -0800 |
parents | 148e5441d916 |
children | c18cbe5936b8 |
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/* * Copyright 2002-2008 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/_psTasks.cpp.incl" // // ScavengeRootsTask // // Define before use class PSScavengeRootsClosure: public OopClosure { private: PSPromotionManager* _promotion_manager; protected: template <class T> void do_oop_work(T *p) { if (PSScavenge::should_scavenge(p)) { // We never card mark roots, maybe call a func without test? PSScavenge::copy_and_push_safe_barrier(_promotion_manager, p); } } public: PSScavengeRootsClosure(PSPromotionManager* pm) : _promotion_manager(pm) { } void do_oop(oop* p) { PSScavengeRootsClosure::do_oop_work(p); } void do_oop(narrowOop* p) { PSScavengeRootsClosure::do_oop_work(p); } }; void ScavengeRootsTask::do_it(GCTaskManager* manager, uint which) { assert(Universe::heap()->is_gc_active(), "called outside gc"); PSPromotionManager* pm = PSPromotionManager::gc_thread_promotion_manager(which); PSScavengeRootsClosure roots_closure(pm); switch (_root_type) { case universe: Universe::oops_do(&roots_closure); ReferenceProcessor::oops_do(&roots_closure); break; case jni_handles: JNIHandles::oops_do(&roots_closure); break; case threads: { ResourceMark rm; Threads::oops_do(&roots_closure, NULL); } break; case object_synchronizer: ObjectSynchronizer::oops_do(&roots_closure); break; case flat_profiler: FlatProfiler::oops_do(&roots_closure); break; case system_dictionary: SystemDictionary::oops_do(&roots_closure); break; case management: Management::oops_do(&roots_closure); break; case jvmti: JvmtiExport::oops_do(&roots_closure); break; case code_cache: { CodeBlobToOopClosure each_scavengable_code_blob(&roots_closure, /*do_marking=*/ true); CodeCache::scavenge_root_nmethods_do(&each_scavengable_code_blob); } break; default: fatal("Unknown root type"); } // Do the real work pm->drain_stacks(false); } // // ThreadRootsTask // void ThreadRootsTask::do_it(GCTaskManager* manager, uint which) { assert(Universe::heap()->is_gc_active(), "called outside gc"); PSPromotionManager* pm = PSPromotionManager::gc_thread_promotion_manager(which); PSScavengeRootsClosure roots_closure(pm); CodeBlobToOopClosure roots_in_blobs(&roots_closure, /*do_marking=*/ true); if (_java_thread != NULL) _java_thread->oops_do(&roots_closure, &roots_in_blobs); if (_vm_thread != NULL) _vm_thread->oops_do(&roots_closure, &roots_in_blobs); // Do the real work pm->drain_stacks(false); } // // StealTask // StealTask::StealTask(ParallelTaskTerminator* t) : _terminator(t) {} void StealTask::do_it(GCTaskManager* manager, uint which) { assert(Universe::heap()->is_gc_active(), "called outside gc"); PSPromotionManager* pm = PSPromotionManager::gc_thread_promotion_manager(which); pm->drain_stacks(true); guarantee(pm->stacks_empty(), "stacks should be empty at this point"); int random_seed = 17; if (pm->depth_first()) { while(true) { StarTask p; if (PSPromotionManager::steal_depth(which, &random_seed, p)) { #if PS_PM_STATS pm->increment_steals(p); #endif // PS_PM_STATS pm->process_popped_location_depth(p); pm->drain_stacks_depth(true); } else { if (terminator()->offer_termination()) { break; } } } } else { while(true) { oop obj; if (PSPromotionManager::steal_breadth(which, &random_seed, obj)) { #if PS_PM_STATS pm->increment_steals(); #endif // PS_PM_STATS obj->copy_contents(pm); pm->drain_stacks_breadth(true); } else { if (terminator()->offer_termination()) { break; } } } } guarantee(pm->stacks_empty(), "stacks should be empty at this point"); } // // SerialOldToYoungRootsTask // void SerialOldToYoungRootsTask::do_it(GCTaskManager* manager, uint which) { assert(_gen != NULL, "Sanity"); assert(_gen->object_space()->contains(_gen_top) || _gen_top == _gen->object_space()->top(), "Sanity"); { PSPromotionManager* pm = PSPromotionManager::gc_thread_promotion_manager(which); assert(Universe::heap()->kind() == CollectedHeap::ParallelScavengeHeap, "Sanity"); CardTableExtension* card_table = (CardTableExtension *)Universe::heap()->barrier_set(); // FIX ME! Assert that card_table is the type we believe it to be. card_table->scavenge_contents(_gen->start_array(), _gen->object_space(), _gen_top, pm); // Do the real work pm->drain_stacks(false); } } // // OldToYoungRootsTask // void OldToYoungRootsTask::do_it(GCTaskManager* manager, uint which) { assert(_gen != NULL, "Sanity"); assert(_gen->object_space()->contains(_gen_top) || _gen_top == _gen->object_space()->top(), "Sanity"); assert(_stripe_number < ParallelGCThreads, "Sanity"); { PSPromotionManager* pm = PSPromotionManager::gc_thread_promotion_manager(which); assert(Universe::heap()->kind() == CollectedHeap::ParallelScavengeHeap, "Sanity"); CardTableExtension* card_table = (CardTableExtension *)Universe::heap()->barrier_set(); // FIX ME! Assert that card_table is the type we believe it to be. card_table->scavenge_contents_parallel(_gen->start_array(), _gen->object_space(), _gen_top, pm, _stripe_number); // Do the real work pm->drain_stacks(false); } }