Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/parallelScavenge/psCompactionManager.hpp @ 1465:2c754f3a2722
Inlining of static final field values. Java mirror instead of VmID. Support for PrintMetrics option.
author | Thomas Wuerthinger <wuerthinger@ssw.jku.at> |
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date | Thu, 18 Nov 2010 17:27:43 +0100 |
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rev | line source |
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0 | 1 /* |
948 | 2 * Copyright 2005-2009 Sun Microsystems, Inc. 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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 // Move to some global location | |
26 #define HAS_BEEN_MOVED 0x1501d01d | |
27 // End move to some global location | |
28 | |
29 | |
30 class MutableSpace; | |
31 class PSOldGen; | |
32 class ParCompactionManager; | |
33 class ObjectStartArray; | |
34 class ParallelCompactData; | |
35 class ParMarkBitMap; | |
36 | |
37 class ParCompactionManager : public CHeapObj { | |
38 friend class ParallelTaskTerminator; | |
39 friend class ParMarkBitMap; | |
40 friend class PSParallelCompact; | |
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41 friend class StealRegionCompactionTask; |
0 | 42 friend class UpdateAndFillClosure; |
43 friend class RefProcTaskExecutor; | |
44 | |
45 public: | |
46 | |
47 // ------------------------ Don't putback if not needed | |
48 // Actions that the compaction manager should take. | |
49 enum Action { | |
50 Update, | |
51 Copy, | |
52 UpdateAndCopy, | |
53 CopyAndUpdate, | |
54 VerifyUpdate, | |
55 ResetObjects, | |
56 NotValid | |
57 }; | |
58 // ------------------------ End don't putback if not needed | |
59 | |
60 private: | |
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61 // 32-bit: 4K * 8 = 32KiB; 64-bit: 8K * 16 = 128KiB |
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62 #define OBJARRAY_QUEUE_SIZE (1 << NOT_LP64(12) LP64_ONLY(13)) |
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63 typedef GenericTaskQueue<ObjArrayTask, OBJARRAY_QUEUE_SIZE> ObjArrayTaskQueue; |
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64 typedef GenericTaskQueueSet<ObjArrayTaskQueue> ObjArrayTaskQueueSet; |
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65 #undef OBJARRAY_QUEUE_SIZE |
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66 |
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67 static ParCompactionManager** _manager_array; |
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68 static OopTaskQueueSet* _stack_array; |
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69 static ObjArrayTaskQueueSet* _objarray_queues; |
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70 static ObjectStartArray* _start_array; |
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71 static RegionTaskQueueSet* _region_array; |
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72 static PSOldGen* _old_gen; |
0 | 73 |
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74 private: |
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75 OopTaskQueue _marking_stack; |
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76 GrowableArray<oop>* _overflow_stack; |
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77 |
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78 typedef GrowableArray<ObjArrayTask> ObjArrayOverflowStack; |
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79 ObjArrayTaskQueue _objarray_queue; |
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80 ObjArrayOverflowStack* _objarray_overflow_stack; |
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81 |
0 | 82 // Is there a way to reuse the _marking_stack for the |
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83 // saving empty regions? For now just create a different |
0 | 84 // type of TaskQueue. |
85 | |
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86 #ifdef USE_RegionTaskQueueWithOverflow |
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87 RegionTaskQueueWithOverflow _region_stack; |
0 | 88 #else |
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89 RegionTaskQueue _region_stack; |
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90 GrowableArray<size_t>* _region_overflow_stack; |
0 | 91 #endif |
92 | |
93 #if 1 // does this happen enough to need a per thread stack? | |
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94 GrowableArray<Klass*>* _revisit_klass_stack; |
941 | 95 GrowableArray<DataLayout*>* _revisit_mdo_stack; |
0 | 96 #endif |
97 static ParMarkBitMap* _mark_bitmap; | |
98 | |
99 Action _action; | |
100 | |
101 static PSOldGen* old_gen() { return _old_gen; } | |
102 static ObjectStartArray* start_array() { return _start_array; } | |
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103 static OopTaskQueueSet* stack_array() { return _stack_array; } |
0 | 104 |
105 static void initialize(ParMarkBitMap* mbm); | |
106 | |
107 protected: | |
108 // Array of tasks. Needed by the ParallelTaskTerminator. | |
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109 static RegionTaskQueueSet* region_array() { return _region_array; } |
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110 OopTaskQueue* marking_stack() { return &_marking_stack; } |
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111 GrowableArray<oop>* overflow_stack() { return _overflow_stack; } |
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112 #ifdef USE_RegionTaskQueueWithOverflow |
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113 RegionTaskQueueWithOverflow* region_stack() { return &_region_stack; } |
0 | 114 #else |
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115 RegionTaskQueue* region_stack() { return &_region_stack; } |
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116 GrowableArray<size_t>* region_overflow_stack() { |
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117 return _region_overflow_stack; |
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118 } |
0 | 119 #endif |
120 | |
121 // Pushes onto the marking stack. If the marking stack is full, | |
122 // pushes onto the overflow stack. | |
123 void stack_push(oop obj); | |
124 // Do not implement an equivalent stack_pop. Deal with the | |
125 // marking stack and overflow stack directly. | |
126 | |
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127 // Pushes onto the region stack. If the region stack is full, |
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128 // pushes onto the region overflow stack. |
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129 void region_stack_push(size_t region_index); |
0 | 130 |
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131 public: |
0 | 132 Action action() { return _action; } |
133 void set_action(Action v) { _action = v; } | |
134 | |
135 inline static ParCompactionManager* manager_array(int index); | |
136 | |
137 ParCompactionManager(); | |
138 ~ParCompactionManager(); | |
139 | |
140 void allocate_stacks(); | |
141 void deallocate_stacks(); | |
142 ParMarkBitMap* mark_bitmap() { return _mark_bitmap; } | |
143 | |
144 // Take actions in preparation for a compaction. | |
145 static void reset(); | |
146 | |
147 // void drain_stacks(); | |
148 | |
149 bool should_update(); | |
150 bool should_copy(); | |
151 bool should_verify_only(); | |
152 bool should_reset_only(); | |
153 | |
154 #if 1 | |
155 // Probably stays as a growable array | |
156 GrowableArray<Klass*>* revisit_klass_stack() { return _revisit_klass_stack; } | |
941 | 157 GrowableArray<DataLayout*>* revisit_mdo_stack() { return _revisit_mdo_stack; } |
0 | 158 #endif |
159 | |
160 // Save oop for later processing. Must not fail. | |
161 void save_for_scanning(oop m); | |
162 // Get a oop for scanning. If returns null, no oop were found. | |
163 oop retrieve_for_scanning(); | |
164 | |
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165 inline void push_objarray(oop obj, size_t index); |
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166 |
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167 // Save region for later processing. Must not fail. |
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168 void save_for_processing(size_t region_index); |
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169 // Get a region for processing. If returns null, no region were found. |
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170 bool retrieve_for_processing(size_t& region_index); |
0 | 171 |
172 // Access function for compaction managers | |
173 static ParCompactionManager* gc_thread_compaction_manager(int index); | |
174 | |
175 static bool steal(int queue_num, int* seed, Task& t) { | |
176 return stack_array()->steal(queue_num, seed, t); | |
177 } | |
178 | |
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179 static bool steal_objarray(int queue_num, int* seed, ObjArrayTask& t) { |
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180 return _objarray_queues->steal(queue_num, seed, t); |
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181 } |
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182 |
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183 static bool steal(int queue_num, int* seed, RegionTask& t) { |
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184 return region_array()->steal(queue_num, seed, t); |
0 | 185 } |
186 | |
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187 // Process tasks remaining on any marking stack |
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188 void follow_marking_stacks(); |
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189 inline bool marking_stacks_empty() const; |
0 | 190 |
191 // Process tasks remaining on any stack | |
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192 void drain_region_stacks(); |
0 | 193 |
194 // Process tasks remaining on any stack | |
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195 void drain_region_overflow_stack(); |
0 | 196 |
197 // Debugging support | |
198 #ifdef ASSERT | |
199 bool stacks_have_been_allocated(); | |
200 #endif | |
201 }; | |
202 | |
203 inline ParCompactionManager* ParCompactionManager::manager_array(int index) { | |
204 assert(_manager_array != NULL, "access of NULL manager_array"); | |
205 assert(index >= 0 && index <= (int)ParallelGCThreads, | |
206 "out of range manager_array access"); | |
207 return _manager_array[index]; | |
208 } | |
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209 |
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210 bool ParCompactionManager::marking_stacks_empty() const { |
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211 return _marking_stack.size() == 0 && _overflow_stack->is_empty() && |
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212 _objarray_queue.size() == 0 && _objarray_overflow_stack->is_empty(); |
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213 } |