Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.inline.hpp @ 6027:8a2e5a6a19a4
7143490: G1: Remove HeapRegion::_top_at_conc_mark_count
Summary: Removed the HeapRegion::_top_at_conc_mark_count field. It is no longer needed as a result of the changes for 6888336 and 7127706. Refactored the closures that finalize and verify the liveness counting data so that common functionality was placed into a base class.
Reviewed-by: brutisso, tonyp
author | johnc |
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date | Wed, 25 Apr 2012 10:23:12 -0700 |
parents | 6cd6d394f280 |
children | da91efe96a93 |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 2001, 2010, 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 * | |
1552
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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 | |
1972 | 25 #ifndef SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CONCURRENTMARKSWEEPGENERATION_INLINE_HPP |
26 #define SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CONCURRENTMARKSWEEPGENERATION_INLINE_HPP | |
27 | |
28 #include "gc_implementation/concurrentMarkSweep/cmsLockVerifier.hpp" | |
29 #include "gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.hpp" | |
30 #include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp" | |
31 #include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.hpp" | |
32 #include "gc_implementation/shared/gcUtil.hpp" | |
33 #include "memory/defNewGeneration.hpp" | |
34 | |
0 | 35 inline void CMSBitMap::clear_all() { |
36 assert_locked(); | |
37 // CMS bitmaps are usually cover large memory regions | |
38 _bm.clear_large(); | |
39 return; | |
40 } | |
41 | |
42 inline size_t CMSBitMap::heapWordToOffset(HeapWord* addr) const { | |
43 return (pointer_delta(addr, _bmStartWord)) >> _shifter; | |
44 } | |
45 | |
46 inline HeapWord* CMSBitMap::offsetToHeapWord(size_t offset) const { | |
47 return _bmStartWord + (offset << _shifter); | |
48 } | |
49 | |
50 inline size_t CMSBitMap::heapWordDiffToOffsetDiff(size_t diff) const { | |
51 assert((diff & ((1 << _shifter) - 1)) == 0, "argument check"); | |
52 return diff >> _shifter; | |
53 } | |
54 | |
55 inline void CMSBitMap::mark(HeapWord* addr) { | |
56 assert_locked(); | |
57 assert(_bmStartWord <= addr && addr < (_bmStartWord + _bmWordSize), | |
58 "outside underlying space?"); | |
59 _bm.set_bit(heapWordToOffset(addr)); | |
60 } | |
61 | |
62 inline bool CMSBitMap::par_mark(HeapWord* addr) { | |
63 assert_locked(); | |
64 assert(_bmStartWord <= addr && addr < (_bmStartWord + _bmWordSize), | |
65 "outside underlying space?"); | |
66 return _bm.par_at_put(heapWordToOffset(addr), true); | |
67 } | |
68 | |
69 inline void CMSBitMap::par_clear(HeapWord* addr) { | |
70 assert_locked(); | |
71 assert(_bmStartWord <= addr && addr < (_bmStartWord + _bmWordSize), | |
72 "outside underlying space?"); | |
73 _bm.par_at_put(heapWordToOffset(addr), false); | |
74 } | |
75 | |
76 inline void CMSBitMap::mark_range(MemRegion mr) { | |
77 NOT_PRODUCT(region_invariant(mr)); | |
78 // Range size is usually just 1 bit. | |
79 _bm.set_range(heapWordToOffset(mr.start()), heapWordToOffset(mr.end()), | |
80 BitMap::small_range); | |
81 } | |
82 | |
83 inline void CMSBitMap::clear_range(MemRegion mr) { | |
84 NOT_PRODUCT(region_invariant(mr)); | |
85 // Range size is usually just 1 bit. | |
86 _bm.clear_range(heapWordToOffset(mr.start()), heapWordToOffset(mr.end()), | |
87 BitMap::small_range); | |
88 } | |
89 | |
90 inline void CMSBitMap::par_mark_range(MemRegion mr) { | |
91 NOT_PRODUCT(region_invariant(mr)); | |
92 // Range size is usually just 1 bit. | |
93 _bm.par_set_range(heapWordToOffset(mr.start()), heapWordToOffset(mr.end()), | |
94 BitMap::small_range); | |
95 } | |
96 | |
97 inline void CMSBitMap::par_clear_range(MemRegion mr) { | |
98 NOT_PRODUCT(region_invariant(mr)); | |
99 // Range size is usually just 1 bit. | |
100 _bm.par_clear_range(heapWordToOffset(mr.start()), heapWordToOffset(mr.end()), | |
101 BitMap::small_range); | |
102 } | |
103 | |
104 inline void CMSBitMap::mark_large_range(MemRegion mr) { | |
105 NOT_PRODUCT(region_invariant(mr)); | |
106 // Range size must be greater than 32 bytes. | |
107 _bm.set_range(heapWordToOffset(mr.start()), heapWordToOffset(mr.end()), | |
108 BitMap::large_range); | |
109 } | |
110 | |
111 inline void CMSBitMap::clear_large_range(MemRegion mr) { | |
112 NOT_PRODUCT(region_invariant(mr)); | |
113 // Range size must be greater than 32 bytes. | |
114 _bm.clear_range(heapWordToOffset(mr.start()), heapWordToOffset(mr.end()), | |
115 BitMap::large_range); | |
116 } | |
117 | |
118 inline void CMSBitMap::par_mark_large_range(MemRegion mr) { | |
119 NOT_PRODUCT(region_invariant(mr)); | |
120 // Range size must be greater than 32 bytes. | |
121 _bm.par_set_range(heapWordToOffset(mr.start()), heapWordToOffset(mr.end()), | |
122 BitMap::large_range); | |
123 } | |
124 | |
125 inline void CMSBitMap::par_clear_large_range(MemRegion mr) { | |
126 NOT_PRODUCT(region_invariant(mr)); | |
127 // Range size must be greater than 32 bytes. | |
128 _bm.par_clear_range(heapWordToOffset(mr.start()), heapWordToOffset(mr.end()), | |
129 BitMap::large_range); | |
130 } | |
131 | |
132 // Starting at "addr" (inclusive) return a memory region | |
133 // corresponding to the first maximally contiguous marked ("1") region. | |
134 inline MemRegion CMSBitMap::getAndClearMarkedRegion(HeapWord* addr) { | |
135 return getAndClearMarkedRegion(addr, endWord()); | |
136 } | |
137 | |
138 // Starting at "start_addr" (inclusive) return a memory region | |
139 // corresponding to the first maximal contiguous marked ("1") region | |
140 // strictly less than end_addr. | |
141 inline MemRegion CMSBitMap::getAndClearMarkedRegion(HeapWord* start_addr, | |
142 HeapWord* end_addr) { | |
143 HeapWord *start, *end; | |
144 assert_locked(); | |
145 start = getNextMarkedWordAddress (start_addr, end_addr); | |
146 end = getNextUnmarkedWordAddress(start, end_addr); | |
147 assert(start <= end, "Consistency check"); | |
148 MemRegion mr(start, end); | |
149 if (!mr.is_empty()) { | |
150 clear_range(mr); | |
151 } | |
152 return mr; | |
153 } | |
154 | |
155 inline bool CMSBitMap::isMarked(HeapWord* addr) const { | |
156 assert_locked(); | |
157 assert(_bmStartWord <= addr && addr < (_bmStartWord + _bmWordSize), | |
158 "outside underlying space?"); | |
159 return _bm.at(heapWordToOffset(addr)); | |
160 } | |
161 | |
162 // The same as isMarked() but without a lock check. | |
163 inline bool CMSBitMap::par_isMarked(HeapWord* addr) const { | |
164 assert(_bmStartWord <= addr && addr < (_bmStartWord + _bmWordSize), | |
165 "outside underlying space?"); | |
166 return _bm.at(heapWordToOffset(addr)); | |
167 } | |
168 | |
169 | |
170 inline bool CMSBitMap::isUnmarked(HeapWord* addr) const { | |
171 assert_locked(); | |
172 assert(_bmStartWord <= addr && addr < (_bmStartWord + _bmWordSize), | |
173 "outside underlying space?"); | |
174 return !_bm.at(heapWordToOffset(addr)); | |
175 } | |
176 | |
177 // Return the HeapWord address corresponding to next "1" bit | |
178 // (inclusive). | |
179 inline HeapWord* CMSBitMap::getNextMarkedWordAddress(HeapWord* addr) const { | |
180 return getNextMarkedWordAddress(addr, endWord()); | |
181 } | |
182 | |
183 // Return the least HeapWord address corresponding to next "1" bit | |
184 // starting at start_addr (inclusive) but strictly less than end_addr. | |
185 inline HeapWord* CMSBitMap::getNextMarkedWordAddress( | |
186 HeapWord* start_addr, HeapWord* end_addr) const { | |
187 assert_locked(); | |
188 size_t nextOffset = _bm.get_next_one_offset( | |
189 heapWordToOffset(start_addr), | |
190 heapWordToOffset(end_addr)); | |
191 HeapWord* nextAddr = offsetToHeapWord(nextOffset); | |
192 assert(nextAddr >= start_addr && | |
193 nextAddr <= end_addr, "get_next_one postcondition"); | |
194 assert((nextAddr == end_addr) || | |
195 isMarked(nextAddr), "get_next_one postcondition"); | |
196 return nextAddr; | |
197 } | |
198 | |
199 | |
200 // Return the HeapWord address corrsponding to the next "0" bit | |
201 // (inclusive). | |
202 inline HeapWord* CMSBitMap::getNextUnmarkedWordAddress(HeapWord* addr) const { | |
203 return getNextUnmarkedWordAddress(addr, endWord()); | |
204 } | |
205 | |
206 // Return the HeapWord address corrsponding to the next "0" bit | |
207 // (inclusive). | |
208 inline HeapWord* CMSBitMap::getNextUnmarkedWordAddress( | |
209 HeapWord* start_addr, HeapWord* end_addr) const { | |
210 assert_locked(); | |
211 size_t nextOffset = _bm.get_next_zero_offset( | |
212 heapWordToOffset(start_addr), | |
213 heapWordToOffset(end_addr)); | |
214 HeapWord* nextAddr = offsetToHeapWord(nextOffset); | |
215 assert(nextAddr >= start_addr && | |
216 nextAddr <= end_addr, "get_next_zero postcondition"); | |
217 assert((nextAddr == end_addr) || | |
218 isUnmarked(nextAddr), "get_next_zero postcondition"); | |
219 return nextAddr; | |
220 } | |
221 | |
222 inline bool CMSBitMap::isAllClear() const { | |
223 assert_locked(); | |
224 return getNextMarkedWordAddress(startWord()) >= endWord(); | |
225 } | |
226 | |
227 inline void CMSBitMap::iterate(BitMapClosure* cl, HeapWord* left, | |
228 HeapWord* right) { | |
229 assert_locked(); | |
230 left = MAX2(_bmStartWord, left); | |
231 right = MIN2(_bmStartWord + _bmWordSize, right); | |
232 if (right > left) { | |
233 _bm.iterate(cl, heapWordToOffset(left), heapWordToOffset(right)); | |
234 } | |
235 } | |
236 | |
237 inline void CMSCollector::start_icms() { | |
238 if (CMSIncrementalMode) { | |
239 ConcurrentMarkSweepThread::start_icms(); | |
240 } | |
241 } | |
242 | |
243 inline void CMSCollector::stop_icms() { | |
244 if (CMSIncrementalMode) { | |
245 ConcurrentMarkSweepThread::stop_icms(); | |
246 } | |
247 } | |
248 | |
249 inline void CMSCollector::disable_icms() { | |
250 if (CMSIncrementalMode) { | |
251 ConcurrentMarkSweepThread::disable_icms(); | |
252 } | |
253 } | |
254 | |
255 inline void CMSCollector::enable_icms() { | |
256 if (CMSIncrementalMode) { | |
257 ConcurrentMarkSweepThread::enable_icms(); | |
258 } | |
259 } | |
260 | |
261 inline void CMSCollector::icms_wait() { | |
262 if (CMSIncrementalMode) { | |
263 cmsThread()->icms_wait(); | |
264 } | |
265 } | |
266 | |
267 inline void CMSCollector::save_sweep_limits() { | |
268 _cmsGen->save_sweep_limit(); | |
269 _permGen->save_sweep_limit(); | |
270 } | |
271 | |
272 inline bool CMSCollector::is_dead_obj(oop obj) const { | |
273 HeapWord* addr = (HeapWord*)obj; | |
274 assert((_cmsGen->cmsSpace()->is_in_reserved(addr) | |
275 && _cmsGen->cmsSpace()->block_is_obj(addr)) | |
276 || | |
277 (_permGen->cmsSpace()->is_in_reserved(addr) | |
278 && _permGen->cmsSpace()->block_is_obj(addr)), | |
279 "must be object"); | |
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280 return should_unload_classes() && |
0 | 281 _collectorState == Sweeping && |
282 !_markBitMap.isMarked(addr); | |
283 } | |
284 | |
285 inline bool CMSCollector::should_abort_preclean() const { | |
286 // We are in the midst of an "abortable preclean" and either | |
287 // scavenge is done or foreground GC wants to take over collection | |
288 return _collectorState == AbortablePreclean && | |
289 (_abort_preclean || _foregroundGCIsActive || | |
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290 GenCollectedHeap::heap()->incremental_collection_will_fail(true /* consult_young */)); |
0 | 291 } |
292 | |
293 inline size_t CMSCollector::get_eden_used() const { | |
294 return _young_gen->as_DefNewGeneration()->eden()->used(); | |
295 } | |
296 | |
297 inline size_t CMSCollector::get_eden_capacity() const { | |
298 return _young_gen->as_DefNewGeneration()->eden()->capacity(); | |
299 } | |
300 | |
301 inline bool CMSStats::valid() const { | |
302 return _valid_bits == _ALL_VALID; | |
303 } | |
304 | |
305 inline void CMSStats::record_gc0_begin() { | |
306 if (_gc0_begin_time.is_updated()) { | |
307 float last_gc0_period = _gc0_begin_time.seconds(); | |
308 _gc0_period = AdaptiveWeightedAverage::exp_avg(_gc0_period, | |
309 last_gc0_period, _gc0_alpha); | |
310 _gc0_alpha = _saved_alpha; | |
311 _valid_bits |= _GC0_VALID; | |
312 } | |
313 _cms_used_at_gc0_begin = _cms_gen->cmsSpace()->used(); | |
314 | |
315 _gc0_begin_time.update(); | |
316 } | |
317 | |
318 inline void CMSStats::record_gc0_end(size_t cms_gen_bytes_used) { | |
319 float last_gc0_duration = _gc0_begin_time.seconds(); | |
320 _gc0_duration = AdaptiveWeightedAverage::exp_avg(_gc0_duration, | |
321 last_gc0_duration, _gc0_alpha); | |
322 | |
323 // Amount promoted. | |
324 _cms_used_at_gc0_end = cms_gen_bytes_used; | |
325 | |
326 size_t promoted_bytes = 0; | |
327 if (_cms_used_at_gc0_end >= _cms_used_at_gc0_begin) { | |
328 promoted_bytes = _cms_used_at_gc0_end - _cms_used_at_gc0_begin; | |
329 } | |
330 | |
331 // If the younger gen collections were skipped, then the | |
332 // number of promoted bytes will be 0 and adding it to the | |
333 // average will incorrectly lessen the average. It is, however, | |
334 // also possible that no promotion was needed. | |
335 // | |
336 // _gc0_promoted used to be calculated as | |
337 // _gc0_promoted = AdaptiveWeightedAverage::exp_avg(_gc0_promoted, | |
338 // promoted_bytes, _gc0_alpha); | |
339 _cms_gen->gc_stats()->avg_promoted()->sample(promoted_bytes); | |
340 _gc0_promoted = (size_t) _cms_gen->gc_stats()->avg_promoted()->average(); | |
341 | |
342 // Amount directly allocated. | |
343 size_t allocated_bytes = _cms_gen->direct_allocated_words() * HeapWordSize; | |
344 _cms_gen->reset_direct_allocated_words(); | |
345 _cms_allocated = AdaptiveWeightedAverage::exp_avg(_cms_allocated, | |
346 allocated_bytes, _gc0_alpha); | |
347 } | |
348 | |
349 inline void CMSStats::record_cms_begin() { | |
350 _cms_timer.stop(); | |
351 | |
352 // This is just an approximate value, but is good enough. | |
353 _cms_used_at_cms_begin = _cms_used_at_gc0_end; | |
354 | |
355 _cms_period = AdaptiveWeightedAverage::exp_avg((float)_cms_period, | |
356 (float) _cms_timer.seconds(), _cms_alpha); | |
357 _cms_begin_time.update(); | |
358 | |
359 _cms_timer.reset(); | |
360 _cms_timer.start(); | |
361 } | |
362 | |
363 inline void CMSStats::record_cms_end() { | |
364 _cms_timer.stop(); | |
365 | |
366 float cur_duration = _cms_timer.seconds(); | |
367 _cms_duration = AdaptiveWeightedAverage::exp_avg(_cms_duration, | |
368 cur_duration, _cms_alpha); | |
369 | |
370 // Avoid division by 0. | |
371 const size_t cms_used_mb = MAX2(_cms_used_at_cms_begin / M, (size_t)1); | |
372 _cms_duration_per_mb = AdaptiveWeightedAverage::exp_avg(_cms_duration_per_mb, | |
373 cur_duration / cms_used_mb, | |
374 _cms_alpha); | |
375 | |
376 _cms_end_time.update(); | |
377 _cms_alpha = _saved_alpha; | |
378 _allow_duty_cycle_reduction = true; | |
379 _valid_bits |= _CMS_VALID; | |
380 | |
381 _cms_timer.start(); | |
382 } | |
383 | |
384 inline double CMSStats::cms_time_since_begin() const { | |
385 return _cms_begin_time.seconds(); | |
386 } | |
387 | |
388 inline double CMSStats::cms_time_since_end() const { | |
389 return _cms_end_time.seconds(); | |
390 } | |
391 | |
392 inline double CMSStats::promotion_rate() const { | |
393 assert(valid(), "statistics not valid yet"); | |
394 return gc0_promoted() / gc0_period(); | |
395 } | |
396 | |
397 inline double CMSStats::cms_allocation_rate() const { | |
398 assert(valid(), "statistics not valid yet"); | |
399 return cms_allocated() / gc0_period(); | |
400 } | |
401 | |
402 inline double CMSStats::cms_consumption_rate() const { | |
403 assert(valid(), "statistics not valid yet"); | |
404 return (gc0_promoted() + cms_allocated()) / gc0_period(); | |
405 } | |
406 | |
407 inline unsigned int CMSStats::icms_update_duty_cycle() { | |
408 // Update the duty cycle only if pacing is enabled and the stats are valid | |
409 // (after at least one young gen gc and one cms cycle have completed). | |
410 if (CMSIncrementalPacing && valid()) { | |
411 return icms_update_duty_cycle_impl(); | |
412 } | |
413 return _icms_duty_cycle; | |
414 } | |
415 | |
416 inline void ConcurrentMarkSweepGeneration::save_sweep_limit() { | |
417 cmsSpace()->save_sweep_limit(); | |
418 } | |
419 | |
420 inline size_t ConcurrentMarkSweepGeneration::capacity() const { | |
421 return _cmsSpace->capacity(); | |
422 } | |
423 | |
424 inline size_t ConcurrentMarkSweepGeneration::used() const { | |
425 return _cmsSpace->used(); | |
426 } | |
427 | |
428 inline size_t ConcurrentMarkSweepGeneration::free() const { | |
429 return _cmsSpace->free(); | |
430 } | |
431 | |
432 inline MemRegion ConcurrentMarkSweepGeneration::used_region() const { | |
433 return _cmsSpace->used_region(); | |
434 } | |
435 | |
436 inline MemRegion ConcurrentMarkSweepGeneration::used_region_at_save_marks() const { | |
437 return _cmsSpace->used_region_at_save_marks(); | |
438 } | |
439 | |
440 inline void MarkFromRootsClosure::do_yield_check() { | |
441 if (ConcurrentMarkSweepThread::should_yield() && | |
442 !_collector->foregroundGCIsActive() && | |
443 _yield) { | |
444 do_yield_work(); | |
445 } | |
446 } | |
447 | |
448 inline void Par_MarkFromRootsClosure::do_yield_check() { | |
449 if (ConcurrentMarkSweepThread::should_yield() && | |
450 !_collector->foregroundGCIsActive() && | |
451 _yield) { | |
452 do_yield_work(); | |
453 } | |
454 } | |
455 | |
456 // Return value of "true" indicates that the on-going preclean | |
457 // should be aborted. | |
458 inline bool ScanMarkedObjectsAgainCarefullyClosure::do_yield_check() { | |
459 if (ConcurrentMarkSweepThread::should_yield() && | |
460 !_collector->foregroundGCIsActive() && | |
461 _yield) { | |
462 // Sample young gen size before and after yield | |
463 _collector->sample_eden(); | |
464 do_yield_work(); | |
465 _collector->sample_eden(); | |
466 return _collector->should_abort_preclean(); | |
467 } | |
468 return false; | |
469 } | |
470 | |
471 inline void SurvivorSpacePrecleanClosure::do_yield_check() { | |
472 if (ConcurrentMarkSweepThread::should_yield() && | |
473 !_collector->foregroundGCIsActive() && | |
474 _yield) { | |
475 // Sample young gen size before and after yield | |
476 _collector->sample_eden(); | |
477 do_yield_work(); | |
478 _collector->sample_eden(); | |
479 } | |
480 } | |
481 | |
482 inline void SweepClosure::do_yield_check(HeapWord* addr) { | |
483 if (ConcurrentMarkSweepThread::should_yield() && | |
484 !_collector->foregroundGCIsActive() && | |
485 _yield) { | |
486 do_yield_work(addr); | |
487 } | |
488 } | |
489 | |
490 inline void MarkRefsIntoAndScanClosure::do_yield_check() { | |
491 // The conditions are ordered for the remarking phase | |
492 // when _yield is false. | |
493 if (_yield && | |
494 !_collector->foregroundGCIsActive() && | |
495 ConcurrentMarkSweepThread::should_yield()) { | |
496 do_yield_work(); | |
497 } | |
498 } | |
499 | |
500 | |
501 inline void ModUnionClosure::do_MemRegion(MemRegion mr) { | |
502 // Align the end of mr so it's at a card boundary. | |
503 // This is superfluous except at the end of the space; | |
504 // we should do better than this XXX | |
505 MemRegion mr2(mr.start(), (HeapWord*)round_to((intptr_t)mr.end(), | |
506 CardTableModRefBS::card_size /* bytes */)); | |
507 _t->mark_range(mr2); | |
508 } | |
509 | |
510 inline void ModUnionClosurePar::do_MemRegion(MemRegion mr) { | |
511 // Align the end of mr so it's at a card boundary. | |
512 // This is superfluous except at the end of the space; | |
513 // we should do better than this XXX | |
514 MemRegion mr2(mr.start(), (HeapWord*)round_to((intptr_t)mr.end(), | |
515 CardTableModRefBS::card_size /* bytes */)); | |
516 _t->par_mark_range(mr2); | |
517 } | |
1972 | 518 |
519 #endif // SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CONCURRENTMARKSWEEPGENERATION_INLINE_HPP |