Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/parallelScavenge/psTasks.hpp @ 1562:dfe27f03244a
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author | trims |
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date | Tue, 01 Jun 2010 11:48:33 -0700 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
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0 | 1 /* |
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2 * Copyright (c) 2002, 2005, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 // | |
26 // psTasks.hpp is a collection of GCTasks used by the | |
27 // parallelScavenge collector. | |
28 // | |
29 | |
30 class GCTask; | |
31 class OopClosure; | |
32 class OopStack; | |
33 class ObjectStartArray; | |
34 class ParallelTaskTerminator; | |
35 class MutableSpace; | |
36 class PSOldGen; | |
37 class Thread; | |
38 class VMThread; | |
39 | |
40 // | |
41 // ScavengeRootsTask | |
42 // | |
43 // This task scans all the roots of a given type. | |
44 // | |
45 // | |
46 | |
47 class ScavengeRootsTask : public GCTask { | |
48 public: | |
49 enum RootType { | |
50 universe = 1, | |
51 jni_handles = 2, | |
52 threads = 3, | |
53 object_synchronizer = 4, | |
54 flat_profiler = 5, | |
55 system_dictionary = 6, | |
56 management = 7, | |
989 | 57 jvmti = 8, |
58 code_cache = 9 | |
0 | 59 }; |
60 private: | |
61 RootType _root_type; | |
62 public: | |
63 ScavengeRootsTask(RootType value) : _root_type(value) {} | |
64 | |
65 char* name() { return (char *)"scavenge-roots-task"; } | |
66 | |
67 virtual void do_it(GCTaskManager* manager, uint which); | |
68 }; | |
69 | |
70 // | |
71 // ThreadRootsTask | |
72 // | |
73 // This task scans the roots of a single thread. This task | |
74 // enables scanning of thread roots in parallel. | |
75 // | |
76 | |
77 class ThreadRootsTask : public GCTask { | |
78 private: | |
79 JavaThread* _java_thread; | |
80 VMThread* _vm_thread; | |
81 public: | |
82 ThreadRootsTask(JavaThread* root) : _java_thread(root), _vm_thread(NULL) {} | |
83 ThreadRootsTask(VMThread* root) : _java_thread(NULL), _vm_thread(root) {} | |
84 | |
85 char* name() { return (char *)"thread-roots-task"; } | |
86 | |
87 virtual void do_it(GCTaskManager* manager, uint which); | |
88 }; | |
89 | |
90 // | |
91 // StealTask | |
92 // | |
93 // This task is used to distribute work to idle threads. | |
94 // | |
95 | |
96 class StealTask : public GCTask { | |
97 private: | |
98 ParallelTaskTerminator* const _terminator; | |
99 public: | |
100 char* name() { return (char *)"steal-task"; } | |
101 | |
102 StealTask(ParallelTaskTerminator* t); | |
103 | |
104 ParallelTaskTerminator* terminator() { return _terminator; } | |
105 | |
106 virtual void do_it(GCTaskManager* manager, uint which); | |
107 }; | |
108 | |
109 // | |
110 // SerialOldToYoungRootsTask | |
111 // | |
112 // This task is used to scan for roots in the perm gen | |
113 | |
114 class SerialOldToYoungRootsTask : public GCTask { | |
115 private: | |
116 PSOldGen* _gen; | |
117 HeapWord* _gen_top; | |
118 | |
119 public: | |
120 SerialOldToYoungRootsTask(PSOldGen *gen, HeapWord* gen_top) : | |
121 _gen(gen), _gen_top(gen_top) { } | |
122 | |
123 char* name() { return (char *)"serial-old-to-young-roots-task"; } | |
124 | |
125 virtual void do_it(GCTaskManager* manager, uint which); | |
126 }; | |
127 | |
128 // | |
129 // OldToYoungRootsTask | |
130 // | |
131 // This task is used to scan old to young roots in parallel | |
132 | |
133 class OldToYoungRootsTask : public GCTask { | |
134 private: | |
135 PSOldGen* _gen; | |
136 HeapWord* _gen_top; | |
137 uint _stripe_number; | |
138 | |
139 public: | |
140 OldToYoungRootsTask(PSOldGen *gen, HeapWord* gen_top, uint stripe_number) : | |
141 _gen(gen), _gen_top(gen_top), _stripe_number(stripe_number) { } | |
142 | |
143 char* name() { return (char *)"old-to-young-roots-task"; } | |
144 | |
145 virtual void do_it(GCTaskManager* manager, uint which); | |
146 }; |