Mercurial > hg > graal-jvmci-8
annotate src/share/vm/gc_implementation/g1/vm_operations_g1.hpp @ 20619:b12a2a9b05ca
8056240: Investigate increased GC remark time after class unloading changes in CRM Fuse
Reviewed-by: mgerdin, coleenp, bdelsart
author | stefank |
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date | Thu, 02 Oct 2014 10:55:36 +0200 |
parents | 1d6eb209432a |
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342 | 1 /* |
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2 * Copyright (c) 2001, 2012, 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 | |
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28 #include "gc_implementation/g1/g1AllocationContext.hpp" |
1972 | 29 #include "gc_implementation/shared/vmGCOperations.hpp" |
30 | |
342 | 31 // VM_operations for the G1 collector. |
32 // VM_GC_Operation: | |
33 // - VM_CGC_Operation | |
34 // - VM_G1CollectFull | |
1973 | 35 // - VM_G1OperationWithAllocRequest |
36 // - VM_G1CollectForAllocation | |
37 // - VM_G1IncCollectionPause | |
38 | |
39 class VM_G1OperationWithAllocRequest: public VM_GC_Operation { | |
40 protected: | |
41 size_t _word_size; | |
42 HeapWord* _result; | |
43 bool _pause_succeeded; | |
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44 AllocationContext_t _allocation_context; |
1973 | 45 |
46 public: | |
47 VM_G1OperationWithAllocRequest(unsigned int gc_count_before, | |
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48 size_t word_size, |
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49 GCCause::Cause gc_cause) |
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50 : VM_GC_Operation(gc_count_before, gc_cause), |
1973 | 51 _word_size(word_size), _result(NULL), _pause_succeeded(false) { } |
52 HeapWord* result() { return _result; } | |
53 bool pause_succeeded() { return _pause_succeeded; } | |
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54 void set_allocation_context(AllocationContext_t context) { _allocation_context = context; } |
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55 AllocationContext_t allocation_context() { return _allocation_context; } |
1973 | 56 }; |
342 | 57 |
58 class VM_G1CollectFull: public VM_GC_Operation { | |
1973 | 59 public: |
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60 VM_G1CollectFull(unsigned int gc_count_before, |
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61 unsigned int full_gc_count_before, |
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62 GCCause::Cause cause) |
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63 : VM_GC_Operation(gc_count_before, cause, full_gc_count_before, true) { } |
342 | 64 virtual VMOp_Type type() const { return VMOp_G1CollectFull; } |
65 virtual void doit(); | |
66 virtual const char* name() const { | |
67 return "full garbage-first collection"; | |
68 } | |
69 }; | |
70 | |
1973 | 71 class VM_G1CollectForAllocation: public VM_G1OperationWithAllocRequest { |
72 public: | |
73 VM_G1CollectForAllocation(unsigned int gc_count_before, | |
74 size_t word_size); | |
342 | 75 virtual VMOp_Type type() const { return VMOp_G1CollectForAllocation; } |
76 virtual void doit(); | |
77 virtual const char* name() const { | |
78 return "garbage-first collection to satisfy allocation"; | |
79 } | |
80 }; | |
81 | |
1973 | 82 class VM_G1IncCollectionPause: public VM_G1OperationWithAllocRequest { |
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83 private: |
1973 | 84 bool _should_initiate_conc_mark; |
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85 bool _should_retry_gc; |
1973 | 86 double _target_pause_time_ms; |
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87 unsigned int _old_marking_cycles_completed_before; |
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88 public: |
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89 VM_G1IncCollectionPause(unsigned int gc_count_before, |
1973 | 90 size_t word_size, |
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91 bool should_initiate_conc_mark, |
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92 double target_pause_time_ms, |
1973 | 93 GCCause::Cause gc_cause); |
342 | 94 virtual VMOp_Type type() const { return VMOp_G1IncCollectionPause; } |
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95 virtual bool doit_prologue(); |
342 | 96 virtual void doit(); |
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97 virtual void doit_epilogue(); |
342 | 98 virtual const char* name() const { |
99 return "garbage-first incremental collection pause"; | |
100 } | |
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101 bool should_retry_gc() const { return _should_retry_gc; } |
342 | 102 }; |
103 | |
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104 // Concurrent GC stop-the-world operations such as remark and cleanup; |
342 | 105 // consider sharing these with CMS's counterparts. |
106 class VM_CGC_Operation: public VM_Operation { | |
107 VoidClosure* _cl; | |
108 const char* _printGCMessage; | |
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109 bool _needs_pll; |
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110 |
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111 protected: |
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112 // java.lang.ref.Reference support |
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113 void acquire_pending_list_lock(); |
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114 void release_and_notify_pending_list_lock(); |
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115 |
1973 | 116 public: |
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117 VM_CGC_Operation(VoidClosure* cl, const char *printGCMsg, bool needs_pll) |
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118 : _cl(cl), _printGCMessage(printGCMsg), _needs_pll(needs_pll) { } |
342 | 119 virtual VMOp_Type type() const { return VMOp_CGC_Operation; } |
120 virtual void doit(); | |
121 virtual bool doit_prologue(); | |
122 virtual void doit_epilogue(); | |
123 virtual const char* name() const { | |
124 return "concurrent gc"; | |
125 } | |
126 }; | |
1972 | 127 |
128 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_VM_OPERATIONS_G1_HPP |