Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/parallelScavenge/psCompactionManager.cpp @ 1465:2c754f3a2722
Inlining of static final field values. Java mirror instead of VmID. Support for PrintMetrics option.
author | Thomas Wuerthinger <wuerthinger@ssw.jku.at> |
---|---|
date | Thu, 18 Nov 2010 17:27:43 +0100 |
parents | c385bf94cfb8 |
children | c18cbe5936b8 |
rev | line source |
---|---|
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 #include "incls/_precompiled.incl" | |
26 #include "incls/_psCompactionManager.cpp.incl" | |
27 | |
28 PSOldGen* ParCompactionManager::_old_gen = NULL; | |
29 ParCompactionManager** ParCompactionManager::_manager_array = NULL; | |
30 OopTaskQueueSet* ParCompactionManager::_stack_array = NULL; | |
1311
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
31 ParCompactionManager::ObjArrayTaskQueueSet* |
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
32 ParCompactionManager::_objarray_queues = NULL; |
0 | 33 ObjectStartArray* ParCompactionManager::_start_array = NULL; |
34 ParMarkBitMap* ParCompactionManager::_mark_bitmap = NULL; | |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
35 RegionTaskQueueSet* ParCompactionManager::_region_array = NULL; |
0 | 36 |
37 ParCompactionManager::ParCompactionManager() : | |
38 _action(CopyAndUpdate) { | |
39 | |
40 ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap(); | |
41 assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "Sanity"); | |
42 | |
43 _old_gen = heap->old_gen(); | |
44 _start_array = old_gen()->start_array(); | |
45 | |
46 | |
47 marking_stack()->initialize(); | |
48 | |
49 // We want the overflow stack to be permanent | |
50 _overflow_stack = new (ResourceObj::C_HEAP) GrowableArray<oop>(10, true); | |
1311
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
51 |
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
52 _objarray_queue.initialize(); |
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
53 _objarray_overflow_stack = |
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
54 new (ResourceObj::C_HEAP) ObjArrayOverflowStack(10, true); |
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
55 |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
56 #ifdef USE_RegionTaskQueueWithOverflow |
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
57 region_stack()->initialize(); |
0 | 58 #else |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
59 region_stack()->initialize(); |
0 | 60 |
61 // We want the overflow stack to be permanent | |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
62 _region_overflow_stack = |
0 | 63 new (ResourceObj::C_HEAP) GrowableArray<size_t>(10, true); |
64 #endif | |
65 | |
66 // Note that _revisit_klass_stack is allocated out of the | |
67 // C heap (as opposed to out of ResourceArena). | |
68 int size = | |
69 (SystemDictionary::number_of_classes() * 2) * 2 / ParallelGCThreads; | |
70 _revisit_klass_stack = new (ResourceObj::C_HEAP) GrowableArray<Klass*>(size, true); | |
941 | 71 // From some experiments (#klass/k)^2 for k = 10 seems a better fit, but this will |
72 // have to do for now until we are able to investigate a more optimal setting. | |
73 _revisit_mdo_stack = new (ResourceObj::C_HEAP) GrowableArray<DataLayout*>(size*2, true); | |
0 | 74 |
75 } | |
76 | |
77 ParCompactionManager::~ParCompactionManager() { | |
78 delete _overflow_stack; | |
1311
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
79 delete _objarray_overflow_stack; |
0 | 80 delete _revisit_klass_stack; |
941 | 81 delete _revisit_mdo_stack; |
0 | 82 // _manager_array and _stack_array are statics |
83 // shared with all instances of ParCompactionManager | |
84 // should not be deallocated. | |
85 } | |
86 | |
87 void ParCompactionManager::initialize(ParMarkBitMap* mbm) { | |
88 assert(PSParallelCompact::gc_task_manager() != NULL, | |
89 "Needed for initialization"); | |
90 | |
91 _mark_bitmap = mbm; | |
92 | |
93 uint parallel_gc_threads = PSParallelCompact::gc_task_manager()->workers(); | |
94 | |
95 assert(_manager_array == NULL, "Attempt to initialize twice"); | |
96 _manager_array = NEW_C_HEAP_ARRAY(ParCompactionManager*, parallel_gc_threads+1 ); | |
1311
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
97 guarantee(_manager_array != NULL, "Could not allocate manager_array"); |
0 | 98 |
99 _stack_array = new OopTaskQueueSet(parallel_gc_threads); | |
1311
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
100 guarantee(_stack_array != NULL, "Could not allocate stack_array"); |
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
101 _objarray_queues = new ObjArrayTaskQueueSet(parallel_gc_threads); |
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
102 guarantee(_objarray_queues != NULL, "Could not allocate objarray_queues"); |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
103 _region_array = new RegionTaskQueueSet(parallel_gc_threads); |
1311
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
104 guarantee(_region_array != NULL, "Could not allocate region_array"); |
0 | 105 |
106 // Create and register the ParCompactionManager(s) for the worker threads. | |
107 for(uint i=0; i<parallel_gc_threads; i++) { | |
108 _manager_array[i] = new ParCompactionManager(); | |
109 guarantee(_manager_array[i] != NULL, "Could not create ParCompactionManager"); | |
110 stack_array()->register_queue(i, _manager_array[i]->marking_stack()); | |
1311
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
111 _objarray_queues->register_queue(i, &_manager_array[i]->_objarray_queue); |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
112 #ifdef USE_RegionTaskQueueWithOverflow |
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
113 region_array()->register_queue(i, _manager_array[i]->region_stack()->task_queue()); |
0 | 114 #else |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
115 region_array()->register_queue(i, _manager_array[i]->region_stack()); |
0 | 116 #endif |
117 } | |
118 | |
119 // The VMThread gets its own ParCompactionManager, which is not available | |
120 // for work stealing. | |
121 _manager_array[parallel_gc_threads] = new ParCompactionManager(); | |
122 guarantee(_manager_array[parallel_gc_threads] != NULL, | |
123 "Could not create ParCompactionManager"); | |
124 assert(PSParallelCompact::gc_task_manager()->workers() != 0, | |
125 "Not initialized?"); | |
126 } | |
127 | |
128 bool ParCompactionManager::should_update() { | |
129 assert(action() != NotValid, "Action is not set"); | |
130 return (action() == ParCompactionManager::Update) || | |
131 (action() == ParCompactionManager::CopyAndUpdate) || | |
132 (action() == ParCompactionManager::UpdateAndCopy); | |
133 } | |
134 | |
135 bool ParCompactionManager::should_copy() { | |
136 assert(action() != NotValid, "Action is not set"); | |
137 return (action() == ParCompactionManager::Copy) || | |
138 (action() == ParCompactionManager::CopyAndUpdate) || | |
139 (action() == ParCompactionManager::UpdateAndCopy); | |
140 } | |
141 | |
142 bool ParCompactionManager::should_verify_only() { | |
143 assert(action() != NotValid, "Action is not set"); | |
144 return action() == ParCompactionManager::VerifyUpdate; | |
145 } | |
146 | |
147 bool ParCompactionManager::should_reset_only() { | |
148 assert(action() != NotValid, "Action is not set"); | |
149 return action() == ParCompactionManager::ResetObjects; | |
150 } | |
151 | |
152 // For now save on a stack | |
153 void ParCompactionManager::save_for_scanning(oop m) { | |
154 stack_push(m); | |
155 } | |
156 | |
157 void ParCompactionManager::stack_push(oop obj) { | |
158 | |
159 if(!marking_stack()->push(obj)) { | |
160 overflow_stack()->push(obj); | |
161 } | |
162 } | |
163 | |
164 oop ParCompactionManager::retrieve_for_scanning() { | |
165 | |
166 // Should not be used in the parallel case | |
167 ShouldNotReachHere(); | |
168 return NULL; | |
169 } | |
170 | |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
171 // Save region on a stack |
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
172 void ParCompactionManager::save_for_processing(size_t region_index) { |
0 | 173 #ifdef ASSERT |
174 const ParallelCompactData& sd = PSParallelCompact::summary_data(); | |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
175 ParallelCompactData::RegionData* const region_ptr = sd.region(region_index); |
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
176 assert(region_ptr->claimed(), "must be claimed"); |
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
177 assert(region_ptr->_pushed++ == 0, "should only be pushed once"); |
0 | 178 #endif |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
179 region_stack_push(region_index); |
0 | 180 } |
181 | |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
182 void ParCompactionManager::region_stack_push(size_t region_index) { |
0 | 183 |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
184 #ifdef USE_RegionTaskQueueWithOverflow |
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
185 region_stack()->save(region_index); |
0 | 186 #else |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
187 if(!region_stack()->push(region_index)) { |
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
188 region_overflow_stack()->push(region_index); |
0 | 189 } |
190 #endif | |
191 } | |
192 | |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
193 bool ParCompactionManager::retrieve_for_processing(size_t& region_index) { |
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
194 #ifdef USE_RegionTaskQueueWithOverflow |
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
195 return region_stack()->retrieve(region_index); |
0 | 196 #else |
197 // Should not be used in the parallel case | |
198 ShouldNotReachHere(); | |
199 return false; | |
200 #endif | |
201 } | |
202 | |
203 ParCompactionManager* | |
204 ParCompactionManager::gc_thread_compaction_manager(int index) { | |
205 assert(index >= 0 && index < (int)ParallelGCThreads, "index out of range"); | |
206 assert(_manager_array != NULL, "Sanity"); | |
207 return _manager_array[index]; | |
208 } | |
209 | |
210 void ParCompactionManager::reset() { | |
211 for(uint i=0; i<ParallelGCThreads+1; i++) { | |
212 manager_array(i)->revisit_klass_stack()->clear(); | |
941 | 213 manager_array(i)->revisit_mdo_stack()->clear(); |
0 | 214 } |
215 } | |
216 | |
1311
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
217 void ParCompactionManager::follow_marking_stacks() { |
0 | 218 do { |
1311
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
219 // Drain the overflow stack first, to allow stealing from the marking stack. |
1315
c385bf94cfb8
6935839: excessive marking stack growth during full gcs
jcoomes
parents:
1311
diff
changeset
|
220 oop obj; |
1311
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
221 while (!overflow_stack()->is_empty()) { |
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
222 overflow_stack()->pop()->follow_contents(this); |
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
223 } |
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
224 while (marking_stack()->pop_local(obj)) { |
0 | 225 obj->follow_contents(this); |
226 } | |
227 | |
1315
c385bf94cfb8
6935839: excessive marking stack growth during full gcs
jcoomes
parents:
1311
diff
changeset
|
228 // Process ObjArrays one at a time to avoid marking stack bloat. |
1311
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
229 ObjArrayTask task; |
1315
c385bf94cfb8
6935839: excessive marking stack growth during full gcs
jcoomes
parents:
1311
diff
changeset
|
230 if (!_objarray_overflow_stack->is_empty()) { |
1311
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
231 task = _objarray_overflow_stack->pop(); |
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
232 objArrayKlass* const k = (objArrayKlass*)task.obj()->blueprint(); |
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
233 k->oop_follow_contents(this, task.obj(), task.index()); |
1315
c385bf94cfb8
6935839: excessive marking stack growth during full gcs
jcoomes
parents:
1311
diff
changeset
|
234 } else if (_objarray_queue.pop_local(task)) { |
1311
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
235 objArrayKlass* const k = (objArrayKlass*)task.obj()->blueprint(); |
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
236 k->oop_follow_contents(this, task.obj(), task.index()); |
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
237 } |
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
238 } while (!marking_stacks_empty()); |
0 | 239 |
1311
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
948
diff
changeset
|
240 assert(marking_stacks_empty(), "Sanity"); |
0 | 241 } |
242 | |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
243 void ParCompactionManager::drain_region_overflow_stack() { |
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
244 size_t region_index = (size_t) -1; |
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
245 while(region_stack()->retrieve_from_overflow(region_index)) { |
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
246 PSParallelCompact::fill_and_update_region(this, region_index); |
0 | 247 } |
248 } | |
249 | |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
250 void ParCompactionManager::drain_region_stacks() { |
0 | 251 #ifdef ASSERT |
252 ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap(); | |
253 assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "Sanity"); | |
254 MutableSpace* to_space = heap->young_gen()->to_space(); | |
255 MutableSpace* old_space = heap->old_gen()->object_space(); | |
256 MutableSpace* perm_space = heap->perm_gen()->object_space(); | |
257 #endif /* ASSERT */ | |
258 | |
259 #if 1 // def DO_PARALLEL - the serial code hasn't been updated | |
260 do { | |
261 | |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
262 #ifdef USE_RegionTaskQueueWithOverflow |
0 | 263 // Drain overflow stack first, so other threads can steal from |
264 // claimed stack while we work. | |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
265 size_t region_index = (size_t) -1; |
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
266 while(region_stack()->retrieve_from_overflow(region_index)) { |
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
267 PSParallelCompact::fill_and_update_region(this, region_index); |
0 | 268 } |
269 | |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
270 while (region_stack()->retrieve_from_stealable_queue(region_index)) { |
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
271 PSParallelCompact::fill_and_update_region(this, region_index); |
0 | 272 } |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
273 } while (!region_stack()->is_empty()); |
0 | 274 #else |
275 // Drain overflow stack first, so other threads can steal from | |
276 // claimed stack while we work. | |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
277 while(!region_overflow_stack()->is_empty()) { |
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
278 size_t region_index = region_overflow_stack()->pop(); |
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
279 PSParallelCompact::fill_and_update_region(this, region_index); |
0 | 280 } |
281 | |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
282 size_t region_index = -1; |
0 | 283 // obj is a reference!!! |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
284 while (region_stack()->pop_local(region_index)) { |
0 | 285 // It would be nice to assert about the type of objects we might |
286 // pop, but they can come from anywhere, unfortunately. | |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
287 PSParallelCompact::fill_and_update_region(this, region_index); |
0 | 288 } |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
289 } while((region_stack()->size() != 0) || |
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
290 (region_overflow_stack()->length() != 0)); |
0 | 291 #endif |
292 | |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
293 #ifdef USE_RegionTaskQueueWithOverflow |
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
294 assert(region_stack()->is_empty(), "Sanity"); |
0 | 295 #else |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
296 assert(region_stack()->size() == 0, "Sanity"); |
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
0
diff
changeset
|
297 assert(region_overflow_stack()->length() == 0, "Sanity"); |
0 | 298 #endif |
299 #else | |
300 oop obj; | |
301 while (obj = retrieve_for_scanning()) { | |
302 obj->follow_contents(this); | |
303 } | |
304 #endif | |
305 } | |
306 | |
307 #ifdef ASSERT | |
308 bool ParCompactionManager::stacks_have_been_allocated() { | |
941 | 309 return (revisit_klass_stack()->data_addr() != NULL && |
310 revisit_mdo_stack()->data_addr() != NULL); | |
0 | 311 } |
312 #endif |