Mercurial > hg > truffle
view src/share/vm/gc_implementation/parallelScavenge/psTasks.hpp @ 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 2002-2005 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. * */ // // psTasks.hpp is a collection of GCTasks used by the // parallelScavenge collector. // class GCTask; class OopClosure; class OopStack; class ObjectStartArray; class ParallelTaskTerminator; class MutableSpace; class PSOldGen; class Thread; class VMThread; // // ScavengeRootsTask // // This task scans all the roots of a given type. // // class ScavengeRootsTask : public GCTask { public: enum RootType { universe = 1, jni_handles = 2, threads = 3, object_synchronizer = 4, flat_profiler = 5, system_dictionary = 6, management = 7, jvmti = 8, code_cache = 9 }; private: RootType _root_type; public: ScavengeRootsTask(RootType value) : _root_type(value) {} char* name() { return (char *)"scavenge-roots-task"; } virtual void do_it(GCTaskManager* manager, uint which); }; // // ThreadRootsTask // // This task scans the roots of a single thread. This task // enables scanning of thread roots in parallel. // class ThreadRootsTask : public GCTask { private: JavaThread* _java_thread; VMThread* _vm_thread; public: ThreadRootsTask(JavaThread* root) : _java_thread(root), _vm_thread(NULL) {} ThreadRootsTask(VMThread* root) : _java_thread(NULL), _vm_thread(root) {} char* name() { return (char *)"thread-roots-task"; } virtual void do_it(GCTaskManager* manager, uint which); }; // // StealTask // // This task is used to distribute work to idle threads. // class StealTask : public GCTask { private: ParallelTaskTerminator* const _terminator; public: char* name() { return (char *)"steal-task"; } StealTask(ParallelTaskTerminator* t); ParallelTaskTerminator* terminator() { return _terminator; } virtual void do_it(GCTaskManager* manager, uint which); }; // // SerialOldToYoungRootsTask // // This task is used to scan for roots in the perm gen class SerialOldToYoungRootsTask : public GCTask { private: PSOldGen* _gen; HeapWord* _gen_top; public: SerialOldToYoungRootsTask(PSOldGen *gen, HeapWord* gen_top) : _gen(gen), _gen_top(gen_top) { } char* name() { return (char *)"serial-old-to-young-roots-task"; } virtual void do_it(GCTaskManager* manager, uint which); }; // // OldToYoungRootsTask // // This task is used to scan old to young roots in parallel class OldToYoungRootsTask : public GCTask { private: PSOldGen* _gen; HeapWord* _gen_top; uint _stripe_number; public: OldToYoungRootsTask(PSOldGen *gen, HeapWord* gen_top, uint stripe_number) : _gen(gen), _gen_top(gen_top), _stripe_number(stripe_number) { } char* name() { return (char *)"old-to-young-roots-task"; } virtual void do_it(GCTaskManager* manager, uint which); };