1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/gc_implementation/parallelScavenge/psTasks.hpp Sat Dec 01 00:00:00 2007 +0000
1.3 @@ -0,0 +1,145 @@
1.4 +/*
1.5 + * Copyright 2002-2005 Sun Microsystems, Inc. All Rights Reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.24 + * have any questions.
1.25 + *
1.26 + */
1.27 +
1.28 +//
1.29 +// psTasks.hpp is a collection of GCTasks used by the
1.30 +// parallelScavenge collector.
1.31 +//
1.32 +
1.33 +class GCTask;
1.34 +class OopClosure;
1.35 +class OopStack;
1.36 +class ObjectStartArray;
1.37 +class ParallelTaskTerminator;
1.38 +class MutableSpace;
1.39 +class PSOldGen;
1.40 +class Thread;
1.41 +class VMThread;
1.42 +
1.43 +//
1.44 +// ScavengeRootsTask
1.45 +//
1.46 +// This task scans all the roots of a given type.
1.47 +//
1.48 +//
1.49 +
1.50 +class ScavengeRootsTask : public GCTask {
1.51 + public:
1.52 + enum RootType {
1.53 + universe = 1,
1.54 + jni_handles = 2,
1.55 + threads = 3,
1.56 + object_synchronizer = 4,
1.57 + flat_profiler = 5,
1.58 + system_dictionary = 6,
1.59 + management = 7,
1.60 + jvmti = 8
1.61 + };
1.62 + private:
1.63 + RootType _root_type;
1.64 + public:
1.65 + ScavengeRootsTask(RootType value) : _root_type(value) {}
1.66 +
1.67 + char* name() { return (char *)"scavenge-roots-task"; }
1.68 +
1.69 + virtual void do_it(GCTaskManager* manager, uint which);
1.70 +};
1.71 +
1.72 +//
1.73 +// ThreadRootsTask
1.74 +//
1.75 +// This task scans the roots of a single thread. This task
1.76 +// enables scanning of thread roots in parallel.
1.77 +//
1.78 +
1.79 +class ThreadRootsTask : public GCTask {
1.80 + private:
1.81 + JavaThread* _java_thread;
1.82 + VMThread* _vm_thread;
1.83 + public:
1.84 + ThreadRootsTask(JavaThread* root) : _java_thread(root), _vm_thread(NULL) {}
1.85 + ThreadRootsTask(VMThread* root) : _java_thread(NULL), _vm_thread(root) {}
1.86 +
1.87 + char* name() { return (char *)"thread-roots-task"; }
1.88 +
1.89 + virtual void do_it(GCTaskManager* manager, uint which);
1.90 +};
1.91 +
1.92 +//
1.93 +// StealTask
1.94 +//
1.95 +// This task is used to distribute work to idle threads.
1.96 +//
1.97 +
1.98 +class StealTask : public GCTask {
1.99 + private:
1.100 + ParallelTaskTerminator* const _terminator;
1.101 + public:
1.102 + char* name() { return (char *)"steal-task"; }
1.103 +
1.104 + StealTask(ParallelTaskTerminator* t);
1.105 +
1.106 + ParallelTaskTerminator* terminator() { return _terminator; }
1.107 +
1.108 + virtual void do_it(GCTaskManager* manager, uint which);
1.109 +};
1.110 +
1.111 +//
1.112 +// SerialOldToYoungRootsTask
1.113 +//
1.114 +// This task is used to scan for roots in the perm gen
1.115 +
1.116 +class SerialOldToYoungRootsTask : public GCTask {
1.117 + private:
1.118 + PSOldGen* _gen;
1.119 + HeapWord* _gen_top;
1.120 +
1.121 + public:
1.122 + SerialOldToYoungRootsTask(PSOldGen *gen, HeapWord* gen_top) :
1.123 + _gen(gen), _gen_top(gen_top) { }
1.124 +
1.125 + char* name() { return (char *)"serial-old-to-young-roots-task"; }
1.126 +
1.127 + virtual void do_it(GCTaskManager* manager, uint which);
1.128 +};
1.129 +
1.130 +//
1.131 +// OldToYoungRootsTask
1.132 +//
1.133 +// This task is used to scan old to young roots in parallel
1.134 +
1.135 +class OldToYoungRootsTask : public GCTask {
1.136 + private:
1.137 + PSOldGen* _gen;
1.138 + HeapWord* _gen_top;
1.139 + uint _stripe_number;
1.140 +
1.141 + public:
1.142 + OldToYoungRootsTask(PSOldGen *gen, HeapWord* gen_top, uint stripe_number) :
1.143 + _gen(gen), _gen_top(gen_top), _stripe_number(stripe_number) { }
1.144 +
1.145 + char* name() { return (char *)"old-to-young-roots-task"; }
1.146 +
1.147 + virtual void do_it(GCTaskManager* manager, uint which);
1.148 +};
