Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/g1/vm_operations_g1.hpp @ 3886:eeae91c9baba
7080389: G1: refactor marking code in evacuation pause copy closures
Summary: Refactor code marking code in the evacuation pause copy closures so that an evacuated object is only marked by the thread that successfully copies it.
Reviewed-by: stefank, brutisso, tonyp
author | johnc |
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date | Mon, 29 Aug 2011 10:13:06 -0700 |
parents | c798c277ddd1 |
children | db89aa49298f |
rev | line source |
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342 | 1 /* |
2225 | 2 * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved. |
342 | 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. |
342 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_VM_OPERATIONS_G1_HPP |
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_VM_OPERATIONS_G1_HPP | |
27 | |
28 #include "gc_implementation/shared/vmGCOperations.hpp" | |
29 | |
342 | 30 // VM_operations for the G1 collector. |
31 // VM_GC_Operation: | |
32 // - VM_CGC_Operation | |
33 // - VM_G1CollectFull | |
1973 | 34 // - VM_G1OperationWithAllocRequest |
35 // - VM_G1CollectForAllocation | |
36 // - VM_G1IncCollectionPause | |
37 | |
38 class VM_G1OperationWithAllocRequest: public VM_GC_Operation { | |
39 protected: | |
40 size_t _word_size; | |
41 HeapWord* _result; | |
42 bool _pause_succeeded; | |
43 | |
44 public: | |
45 VM_G1OperationWithAllocRequest(unsigned int gc_count_before, | |
46 size_t word_size) | |
2225 | 47 : VM_GC_Operation(gc_count_before, GCCause::_allocation_failure), |
1973 | 48 _word_size(word_size), _result(NULL), _pause_succeeded(false) { } |
49 HeapWord* result() { return _result; } | |
50 bool pause_succeeded() { return _pause_succeeded; } | |
51 }; | |
342 | 52 |
53 class VM_G1CollectFull: public VM_GC_Operation { | |
1973 | 54 public: |
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55 VM_G1CollectFull(unsigned int gc_count_before, |
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56 unsigned int full_gc_count_before, |
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57 GCCause::Cause cause) |
2225 | 58 : VM_GC_Operation(gc_count_before, cause, full_gc_count_before) { } |
342 | 59 virtual VMOp_Type type() const { return VMOp_G1CollectFull; } |
60 virtual void doit(); | |
61 virtual const char* name() const { | |
62 return "full garbage-first collection"; | |
63 } | |
64 }; | |
65 | |
1973 | 66 class VM_G1CollectForAllocation: public VM_G1OperationWithAllocRequest { |
67 public: | |
68 VM_G1CollectForAllocation(unsigned int gc_count_before, | |
69 size_t word_size); | |
342 | 70 virtual VMOp_Type type() const { return VMOp_G1CollectForAllocation; } |
71 virtual void doit(); | |
72 virtual const char* name() const { | |
73 return "garbage-first collection to satisfy allocation"; | |
74 } | |
75 }; | |
76 | |
1973 | 77 class VM_G1IncCollectionPause: public VM_G1OperationWithAllocRequest { |
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78 private: |
1973 | 79 bool _should_initiate_conc_mark; |
80 double _target_pause_time_ms; | |
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81 unsigned int _full_collections_completed_before; |
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82 public: |
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83 VM_G1IncCollectionPause(unsigned int gc_count_before, |
1973 | 84 size_t word_size, |
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85 bool should_initiate_conc_mark, |
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86 double target_pause_time_ms, |
1973 | 87 GCCause::Cause gc_cause); |
342 | 88 virtual VMOp_Type type() const { return VMOp_G1IncCollectionPause; } |
89 virtual void doit(); | |
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90 virtual void doit_epilogue(); |
342 | 91 virtual const char* name() const { |
92 return "garbage-first incremental collection pause"; | |
93 } | |
94 }; | |
95 | |
96 // Concurrent GC stop-the-world operations such as initial and final mark; | |
97 // consider sharing these with CMS's counterparts. | |
98 class VM_CGC_Operation: public VM_Operation { | |
99 VoidClosure* _cl; | |
100 const char* _printGCMessage; | |
1973 | 101 public: |
102 VM_CGC_Operation(VoidClosure* cl, const char *printGCMsg) | |
103 : _cl(cl), _printGCMessage(printGCMsg) { } | |
342 | 104 virtual VMOp_Type type() const { return VMOp_CGC_Operation; } |
105 virtual void doit(); | |
106 virtual bool doit_prologue(); | |
107 virtual void doit_epilogue(); | |
108 virtual const char* name() const { | |
109 return "concurrent gc"; | |
110 } | |
111 }; | |
1972 | 112 |
113 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_VM_OPERATIONS_G1_HPP |