Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/g1/g1RemSet.cpp @ 20804:7848fc12602b
Merge with jdk8u40-b25
| author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
|---|---|
| date | Tue, 07 Apr 2015 14:58:49 +0200 |
| parents | 52b4284cb496 6948da6d7c13 |
| children |
| rev | line source |
|---|---|
| 342 | 1 /* |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17844
diff
changeset
|
2 * Copyright (c) 2001, 2014, 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 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1282
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1282
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1282
diff
changeset
|
21 * questions. |
| 342 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "gc_implementation/g1/concurrentG1Refine.hpp" | |
| 27 #include "gc_implementation/g1/concurrentG1RefineThread.hpp" | |
| 28 #include "gc_implementation/g1/g1BlockOffsetTable.inline.hpp" | |
| 29 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" | |
| 30 #include "gc_implementation/g1/g1CollectorPolicy.hpp" | |
|
10246
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
31 #include "gc_implementation/g1/g1HotCardCache.hpp" |
|
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
4839
diff
changeset
|
32 #include "gc_implementation/g1/g1GCPhaseTimes.hpp" |
| 1972 | 33 #include "gc_implementation/g1/g1OopClosures.inline.hpp" |
| 34 #include "gc_implementation/g1/g1RemSet.inline.hpp" | |
|
20377
a8ea2f110d87
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
20337
diff
changeset
|
35 #include "gc_implementation/g1/heapRegionManager.inline.hpp" |
|
10372
e72f7eecc96d
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
10246
diff
changeset
|
36 #include "gc_implementation/g1/heapRegionRemSet.hpp" |
| 1972 | 37 #include "memory/iterator.hpp" |
| 38 #include "oops/oop.inline.hpp" | |
| 39 #include "utilities/intHisto.hpp" | |
| 342 | 40 |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17844
diff
changeset
|
41 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
|
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17844
diff
changeset
|
42 |
| 342 | 43 #define CARD_REPEAT_HISTO 0 |
| 44 | |
| 45 #if CARD_REPEAT_HISTO | |
| 46 static size_t ct_freq_sz; | |
| 47 static jbyte* ct_freq = NULL; | |
| 48 | |
| 49 void init_ct_freq_table(size_t heap_sz_bytes) { | |
| 50 if (ct_freq == NULL) { | |
| 51 ct_freq_sz = heap_sz_bytes/CardTableModRefBS::card_size; | |
| 52 ct_freq = new jbyte[ct_freq_sz]; | |
| 53 for (size_t j = 0; j < ct_freq_sz; j++) ct_freq[j] = 0; | |
| 54 } | |
| 55 } | |
| 56 | |
| 57 void ct_freq_note_card(size_t index) { | |
| 58 assert(0 <= index && index < ct_freq_sz, "Bounds error."); | |
| 59 if (ct_freq[index] < 100) { ct_freq[index]++; } | |
| 60 } | |
| 61 | |
| 62 static IntHistogram card_repeat_count(10, 10); | |
| 63 | |
| 64 void ct_freq_update_histo_and_reset() { | |
| 65 for (size_t j = 0; j < ct_freq_sz; j++) { | |
| 66 card_repeat_count.add_entry(ct_freq[j]); | |
| 67 ct_freq[j] = 0; | |
| 68 } | |
| 69 | |
| 70 } | |
| 71 #endif | |
| 72 | |
| 1861 | 73 G1RemSet::G1RemSet(G1CollectedHeap* g1, CardTableModRefBS* ct_bs) |
| 74 : _g1(g1), _conc_refine_cards(0), | |
| 75 _ct_bs(ct_bs), _g1p(_g1->g1_policy()), | |
| 342 | 76 _cg1r(g1->concurrent_g1_refine()), |
| 1705 | 77 _cset_rs_update_cl(NULL), |
|
10372
e72f7eecc96d
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
10246
diff
changeset
|
78 _cards_scanned(NULL), _total_cards_scanned(0), |
|
e72f7eecc96d
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
10246
diff
changeset
|
79 _prev_period_summary() |
| 342 | 80 { |
| 81 _seq_task = new SubTasksDone(NumSeqTasks); | |
|
616
4f360ec815ba
6720309: G1: don't synchronously update RSet during evacuation pauses
iveresov
parents:
545
diff
changeset
|
82 guarantee(n_workers() > 0, "There should be some workers"); |
| 6197 | 83 _cset_rs_update_cl = NEW_C_HEAP_ARRAY(OopsInHeapRegionClosure*, n_workers(), mtGC); |
|
616
4f360ec815ba
6720309: G1: don't synchronously update RSet during evacuation pauses
iveresov
parents:
545
diff
changeset
|
84 for (uint i = 0; i < n_workers(); i++) { |
| 1705 | 85 _cset_rs_update_cl[i] = NULL; |
|
616
4f360ec815ba
6720309: G1: don't synchronously update RSet during evacuation pauses
iveresov
parents:
545
diff
changeset
|
86 } |
|
12344
7ec10139bf37
8025441: G1: assert "assert(thread < _num_vtimes) failed: just checking" fails when G1ConcRefinementThreads > ParallelGCThreads
tschatzl
parents:
12343
diff
changeset
|
87 if (G1SummarizeRSetStats) { |
|
7ec10139bf37
8025441: G1: assert "assert(thread < _num_vtimes) failed: just checking" fails when G1ConcRefinementThreads > ParallelGCThreads
tschatzl
parents:
12343
diff
changeset
|
88 _prev_period_summary.initialize(this); |
|
7ec10139bf37
8025441: G1: assert "assert(thread < _num_vtimes) failed: just checking" fails when G1ConcRefinementThreads > ParallelGCThreads
tschatzl
parents:
12343
diff
changeset
|
89 } |
| 342 | 90 } |
| 91 | |
| 1861 | 92 G1RemSet::~G1RemSet() { |
| 342 | 93 delete _seq_task; |
|
616
4f360ec815ba
6720309: G1: don't synchronously update RSet during evacuation pauses
iveresov
parents:
545
diff
changeset
|
94 for (uint i = 0; i < n_workers(); i++) { |
| 1705 | 95 assert(_cset_rs_update_cl[i] == NULL, "it should be"); |
|
616
4f360ec815ba
6720309: G1: don't synchronously update RSet during evacuation pauses
iveresov
parents:
545
diff
changeset
|
96 } |
| 6197 | 97 FREE_C_HEAP_ARRAY(OopsInHeapRegionClosure*, _cset_rs_update_cl, mtGC); |
| 342 | 98 } |
| 99 | |
| 100 void CountNonCleanMemRegionClosure::do_MemRegion(MemRegion mr) { | |
| 101 if (_g1->is_in_g1_reserved(mr.start())) { | |
| 102 _n += (int) ((mr.byte_size() / CardTableModRefBS::card_size)); | |
| 103 if (_start_first == NULL) _start_first = mr.start(); | |
| 104 } | |
| 105 } | |
| 106 | |
| 107 class ScanRSClosure : public HeapRegionClosure { | |
| 108 size_t _cards_done, _cards; | |
| 109 G1CollectedHeap* _g1h; | |
| 12080 | 110 |
| 342 | 111 OopsInHeapRegionClosure* _oc; |
| 20494 | 112 CodeBlobClosure* _code_root_cl; |
| 12080 | 113 |
| 342 | 114 G1BlockOffsetSharedArray* _bot_shared; |
| 12343 | 115 G1SATBCardTableModRefBS *_ct_bs; |
| 12080 | 116 |
| 117 double _strong_code_root_scan_time_sec; | |
|
17844
8847586c9037
8016302: Change type of the number of GC workers to unsigned int (2)
vkempik
parents:
17757
diff
changeset
|
118 uint _worker_i; |
| 12080 | 119 int _block_size; |
| 120 bool _try_claimed; | |
| 121 | |
| 342 | 122 public: |
| 12080 | 123 ScanRSClosure(OopsInHeapRegionClosure* oc, |
| 20494 | 124 CodeBlobClosure* code_root_cl, |
|
17844
8847586c9037
8016302: Change type of the number of GC workers to unsigned int (2)
vkempik
parents:
17757
diff
changeset
|
125 uint worker_i) : |
| 342 | 126 _oc(oc), |
| 12080 | 127 _code_root_cl(code_root_cl), |
| 128 _strong_code_root_scan_time_sec(0.0), | |
| 342 | 129 _cards(0), |
| 130 _cards_done(0), | |
| 131 _worker_i(worker_i), | |
| 132 _try_claimed(false) | |
| 133 { | |
| 134 _g1h = G1CollectedHeap::heap(); | |
| 135 _bot_shared = _g1h->bot_shared(); | |
| 12343 | 136 _ct_bs = _g1h->g1_barrier_set(); |
| 1261 | 137 _block_size = MAX2<int>(G1RSetScanBlockSize, 1); |
| 342 | 138 } |
| 139 | |
| 140 void set_try_claimed() { _try_claimed = true; } | |
| 141 | |
| 142 void scanCard(size_t index, HeapRegion *r) { | |
| 4023 | 143 // Stack allocate the DirtyCardToOopClosure instance |
| 144 HeapRegionDCTOC cl(_g1h, r, _oc, | |
| 145 CardTableModRefBS::Precise, | |
| 146 HeapRegionDCTOC::IntoCSFilterKind); | |
| 342 | 147 |
| 148 // Set the "from" region in the closure. | |
| 149 _oc->set_region(r); | |
| 150 HeapWord* card_start = _bot_shared->address_for_index(index); | |
| 151 HeapWord* card_end = card_start + G1BlockOffsetSharedArray::N_words; | |
| 152 Space *sp = SharedHeap::heap()->space_containing(card_start); | |
|
3317
063382f9b575
7035144: G1: nightly failure: Non-dirty cards in region that should be dirty (failures still exist...)
tonyp
parents:
2364
diff
changeset
|
153 MemRegion sm_region = sp->used_region_at_save_marks(); |
| 342 | 154 MemRegion mr = sm_region.intersection(MemRegion(card_start,card_end)); |
|
3317
063382f9b575
7035144: G1: nightly failure: Non-dirty cards in region that should be dirty (failures still exist...)
tonyp
parents:
2364
diff
changeset
|
155 if (!mr.is_empty() && !_ct_bs->is_card_claimed(index)) { |
|
063382f9b575
7035144: G1: nightly failure: Non-dirty cards in region that should be dirty (failures still exist...)
tonyp
parents:
2364
diff
changeset
|
156 // We make the card as "claimed" lazily (so races are possible |
|
063382f9b575
7035144: G1: nightly failure: Non-dirty cards in region that should be dirty (failures still exist...)
tonyp
parents:
2364
diff
changeset
|
157 // but they're benign), which reduces the number of duplicate |
|
063382f9b575
7035144: G1: nightly failure: Non-dirty cards in region that should be dirty (failures still exist...)
tonyp
parents:
2364
diff
changeset
|
158 // scans (the rsets of the regions in the cset can intersect). |
|
063382f9b575
7035144: G1: nightly failure: Non-dirty cards in region that should be dirty (failures still exist...)
tonyp
parents:
2364
diff
changeset
|
159 _ct_bs->set_card_claimed(index); |
|
063382f9b575
7035144: G1: nightly failure: Non-dirty cards in region that should be dirty (failures still exist...)
tonyp
parents:
2364
diff
changeset
|
160 _cards_done++; |
| 4023 | 161 cl.do_MemRegion(mr); |
| 342 | 162 } |
| 163 } | |
| 164 | |
| 165 void printCard(HeapRegion* card_region, size_t card_index, | |
| 166 HeapWord* card_start) { | |
|
17844
8847586c9037
8016302: Change type of the number of GC workers to unsigned int (2)
vkempik
parents:
17757
diff
changeset
|
167 gclog_or_tty->print_cr("T " UINT32_FORMAT " Region [" PTR_FORMAT ", " PTR_FORMAT ") " |
| 342 | 168 "RS names card %p: " |
| 169 "[" PTR_FORMAT ", " PTR_FORMAT ")", | |
| 170 _worker_i, | |
| 171 card_region->bottom(), card_region->end(), | |
| 172 card_index, | |
| 173 card_start, card_start + G1BlockOffsetSharedArray::N_words); | |
| 174 } | |
| 175 | |
| 12080 | 176 void scan_strong_code_roots(HeapRegion* r) { |
| 177 double scan_start = os::elapsedTime(); | |
| 178 r->strong_code_roots_do(_code_root_cl); | |
| 179 _strong_code_root_scan_time_sec += (os::elapsedTime() - scan_start); | |
| 180 } | |
| 181 | |
| 342 | 182 bool doHeapRegion(HeapRegion* r) { |
| 183 assert(r->in_collection_set(), "should only be called on elements of CS."); | |
| 184 HeapRegionRemSet* hrrs = r->rem_set(); | |
| 185 if (hrrs->iter_is_complete()) return false; // All done. | |
| 186 if (!_try_claimed && !hrrs->claim_iter()) return false; | |
|
3317
063382f9b575
7035144: G1: nightly failure: Non-dirty cards in region that should be dirty (failures still exist...)
tonyp
parents:
2364
diff
changeset
|
187 // If we ever free the collection set concurrently, we should also |
|
063382f9b575
7035144: G1: nightly failure: Non-dirty cards in region that should be dirty (failures still exist...)
tonyp
parents:
2364
diff
changeset
|
188 // clear the card table concurrently therefore we won't need to |
|
063382f9b575
7035144: G1: nightly failure: Non-dirty cards in region that should be dirty (failures still exist...)
tonyp
parents:
2364
diff
changeset
|
189 // add regions of the collection set to the dirty cards region. |
|
796
29e7d79232b9
6819065: G1: eliminate high serial card table clearing time
apetrusenko
parents:
794
diff
changeset
|
190 _g1h->push_dirty_cards_region(r); |
| 342 | 191 // If we didn't return above, then |
| 192 // _try_claimed || r->claim_iter() | |
| 193 // is true: either we're supposed to work on claimed-but-not-complete | |
| 194 // regions, or we successfully claimed the region. | |
| 12080 | 195 |
|
10182
5c93c1f61226
8011724: G1: Stack allocate instances of HeapRegionRemSetIterator
johnc
parents:
6725
diff
changeset
|
196 HeapRegionRemSetIterator iter(hrrs); |
| 342 | 197 size_t card_index; |
| 1261 | 198 |
| 199 // We claim cards in block so as to recude the contention. The block size is determined by | |
| 200 // the G1RSetScanBlockSize parameter. | |
| 201 size_t jump_to_card = hrrs->iter_claimed_next(_block_size); | |
|
10182
5c93c1f61226
8011724: G1: Stack allocate instances of HeapRegionRemSetIterator
johnc
parents:
6725
diff
changeset
|
202 for (size_t current_card = 0; iter.has_next(card_index); current_card++) { |
| 1261 | 203 if (current_card >= jump_to_card + _block_size) { |
| 204 jump_to_card = hrrs->iter_claimed_next(_block_size); | |
| 747 | 205 } |
| 1261 | 206 if (current_card < jump_to_card) continue; |
| 342 | 207 HeapWord* card_start = _g1h->bot_shared()->address_for_index(card_index); |
| 208 #if 0 | |
| 209 gclog_or_tty->print("Rem set iteration yielded card [" PTR_FORMAT ", " PTR_FORMAT ").\n", | |
| 210 card_start, card_start + CardTableModRefBS::card_size_in_words); | |
| 211 #endif | |
| 212 | |
| 213 HeapRegion* card_region = _g1h->heap_region_containing(card_start); | |
| 214 _cards++; | |
| 215 | |
|
796
29e7d79232b9
6819065: G1: eliminate high serial card table clearing time
apetrusenko
parents:
794
diff
changeset
|
216 if (!card_region->is_on_dirty_cards_region_list()) { |
|
29e7d79232b9
6819065: G1: eliminate high serial card table clearing time
apetrusenko
parents:
794
diff
changeset
|
217 _g1h->push_dirty_cards_region(card_region); |
|
29e7d79232b9
6819065: G1: eliminate high serial card table clearing time
apetrusenko
parents:
794
diff
changeset
|
218 } |
|
29e7d79232b9
6819065: G1: eliminate high serial card table clearing time
apetrusenko
parents:
794
diff
changeset
|
219 |
|
3317
063382f9b575
7035144: G1: nightly failure: Non-dirty cards in region that should be dirty (failures still exist...)
tonyp
parents:
2364
diff
changeset
|
220 // If the card is dirty, then we will scan it during updateRS. |
|
063382f9b575
7035144: G1: nightly failure: Non-dirty cards in region that should be dirty (failures still exist...)
tonyp
parents:
2364
diff
changeset
|
221 if (!card_region->in_collection_set() && |
|
063382f9b575
7035144: G1: nightly failure: Non-dirty cards in region that should be dirty (failures still exist...)
tonyp
parents:
2364
diff
changeset
|
222 !_ct_bs->is_card_dirty(card_index)) { |
|
063382f9b575
7035144: G1: nightly failure: Non-dirty cards in region that should be dirty (failures still exist...)
tonyp
parents:
2364
diff
changeset
|
223 scanCard(card_index, card_region); |
| 342 | 224 } |
| 225 } | |
| 747 | 226 if (!_try_claimed) { |
| 12080 | 227 // Scan the strong code root list attached to the current region |
| 228 scan_strong_code_roots(r); | |
| 229 | |
| 747 | 230 hrrs->set_iter_complete(); |
| 231 } | |
| 342 | 232 return false; |
| 233 } | |
| 12080 | 234 |
| 235 double strong_code_root_scan_time_sec() { | |
| 236 return _strong_code_root_scan_time_sec; | |
| 237 } | |
| 238 | |
| 342 | 239 size_t cards_done() { return _cards_done;} |
| 240 size_t cards_looked_up() { return _cards;} | |
| 241 }; | |
| 242 | |
| 12080 | 243 void G1RemSet::scanRS(OopsInHeapRegionClosure* oc, |
| 20494 | 244 CodeBlobClosure* code_root_cl, |
|
17844
8847586c9037
8016302: Change type of the number of GC workers to unsigned int (2)
vkempik
parents:
17757
diff
changeset
|
245 uint worker_i) { |
| 342 | 246 double rs_time_start = os::elapsedTime(); |
|
4097
dc467e8b2c5e
7112743: G1: Reduce overhead of marking closure during evacuation pauses
johnc
parents:
4095
diff
changeset
|
247 HeapRegion *startRegion = _g1->start_cset_region_for_worker(worker_i); |
| 342 | 248 |
| 12080 | 249 ScanRSClosure scanRScl(oc, code_root_cl, worker_i); |
|
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3777
diff
changeset
|
250 |
| 342 | 251 _g1->collection_set_iterate_from(startRegion, &scanRScl); |
| 252 scanRScl.set_try_claimed(); | |
| 253 _g1->collection_set_iterate_from(startRegion, &scanRScl); | |
| 254 | |
| 12080 | 255 double scan_rs_time_sec = (os::elapsedTime() - rs_time_start) |
| 256 - scanRScl.strong_code_root_scan_time_sec(); | |
| 342 | 257 |
| 12080 | 258 assert(_cards_scanned != NULL, "invariant"); |
| 342 | 259 _cards_scanned[worker_i] = scanRScl.cards_done(); |
| 260 | |
|
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
4839
diff
changeset
|
261 _g1p->phase_times()->record_scan_rs_time(worker_i, scan_rs_time_sec * 1000.0); |
| 12080 | 262 _g1p->phase_times()->record_strong_code_root_scan_time(worker_i, |
| 263 scanRScl.strong_code_root_scan_time_sec() * 1000.0); | |
| 342 | 264 } |
| 265 | |
| 1705 | 266 // Closure used for updating RSets and recording references that |
| 267 // point into the collection set. Only called during an | |
| 268 // evacuation pause. | |
| 269 | |
| 270 class RefineRecordRefsIntoCSCardTableEntryClosure: public CardTableEntryClosure { | |
| 271 G1RemSet* _g1rs; | |
| 272 DirtyCardQueue* _into_cset_dcq; | |
| 273 public: | |
| 274 RefineRecordRefsIntoCSCardTableEntryClosure(G1CollectedHeap* g1h, | |
| 275 DirtyCardQueue* into_cset_dcq) : | |
| 276 _g1rs(g1h->g1_rem_set()), _into_cset_dcq(into_cset_dcq) | |
| 277 {} | |
|
17844
8847586c9037
8016302: Change type of the number of GC workers to unsigned int (2)
vkempik
parents:
17757
diff
changeset
|
278 bool do_card_ptr(jbyte* card_ptr, uint worker_i) { |
| 1705 | 279 // The only time we care about recording cards that |
| 280 // contain references that point into the collection set | |
| 281 // is during RSet updating within an evacuation pause. | |
| 282 // In this case worker_i should be the id of a GC worker thread. | |
| 283 assert(SafepointSynchronize::is_at_safepoint(), "not during an evacuation pause"); | |
|
17844
8847586c9037
8016302: Change type of the number of GC workers to unsigned int (2)
vkempik
parents:
17757
diff
changeset
|
284 assert(worker_i < (ParallelGCThreads == 0 ? 1 : ParallelGCThreads), "should be a GC worker"); |
| 342 | 285 |
|
10246
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
286 if (_g1rs->refine_card(card_ptr, worker_i, true)) { |
| 1705 | 287 // 'card_ptr' contains references that point into the collection |
| 288 // set. We need to record the card in the DCQS | |
| 289 // (G1CollectedHeap::into_cset_dirty_card_queue_set()) | |
| 290 // that's used for that purpose. | |
| 291 // | |
| 292 // Enqueue the card | |
| 293 _into_cset_dcq->enqueue(card_ptr); | |
| 294 } | |
| 295 return true; | |
| 296 } | |
| 297 }; | |
| 298 | |
|
17844
8847586c9037
8016302: Change type of the number of GC workers to unsigned int (2)
vkempik
parents:
17757
diff
changeset
|
299 void G1RemSet::updateRS(DirtyCardQueue* into_cset_dcq, uint worker_i) { |
| 342 | 300 double start = os::elapsedTime(); |
| 1705 | 301 // Apply the given closure to all remaining log entries. |
| 302 RefineRecordRefsIntoCSCardTableEntryClosure into_cset_update_rs_cl(_g1, into_cset_dcq); | |
|
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3777
diff
changeset
|
303 |
| 1705 | 304 _g1->iterate_dirty_card_closure(&into_cset_update_rs_cl, into_cset_dcq, false, worker_i); |
| 305 | |
| 794 | 306 // Now there should be no dirty cards. |
| 307 if (G1RSLogCheckCardTable) { | |
| 308 CountNonCleanMemRegionClosure cl(_g1); | |
| 309 _ct_bs->mod_card_iterate(&cl); | |
| 310 // XXX This isn't true any more: keeping cards of young regions | |
| 311 // marked dirty broke it. Need some reasonable fix. | |
| 312 guarantee(cl.n() == 0, "Card table should be clean."); | |
| 342 | 313 } |
| 794 | 314 |
|
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
4839
diff
changeset
|
315 _g1p->phase_times()->record_update_rs_time(worker_i, (os::elapsedTime() - start) * 1000.0); |
| 342 | 316 } |
| 317 | |
| 1861 | 318 void G1RemSet::cleanupHRRS() { |
| 342 | 319 HeapRegionRemSet::cleanup(); |
| 320 } | |
| 321 | |
| 1861 | 322 void G1RemSet::oops_into_collection_set_do(OopsInHeapRegionClosure* oc, |
| 20494 | 323 CodeBlobClosure* code_root_cl, |
|
17844
8847586c9037
8016302: Change type of the number of GC workers to unsigned int (2)
vkempik
parents:
17757
diff
changeset
|
324 uint worker_i) { |
| 342 | 325 #if CARD_REPEAT_HISTO |
| 326 ct_freq_update_histo_and_reset(); | |
| 327 #endif | |
| 328 | |
| 1705 | 329 // We cache the value of 'oc' closure into the appropriate slot in the |
| 330 // _cset_rs_update_cl for this worker | |
|
17844
8847586c9037
8016302: Change type of the number of GC workers to unsigned int (2)
vkempik
parents:
17757
diff
changeset
|
331 assert(worker_i < n_workers(), "sanity"); |
| 1705 | 332 _cset_rs_update_cl[worker_i] = oc; |
| 333 | |
| 334 // A DirtyCardQueue that is used to hold cards containing references | |
| 335 // that point into the collection set. This DCQ is associated with a | |
| 336 // special DirtyCardQueueSet (see g1CollectedHeap.hpp). Under normal | |
| 337 // circumstances (i.e. the pause successfully completes), these cards | |
| 338 // are just discarded (there's no need to update the RSets of regions | |
| 339 // that were in the collection set - after the pause these regions | |
| 340 // are wholly 'free' of live objects. In the event of an evacuation | |
|
20504
6948da6d7c13
8052172: Evacuation failure handling in G1 does not evacuate all objects if -XX:-G1DeferredRSUpdate is set
tschatzl
parents:
20494
diff
changeset
|
341 // failure the cards/buffers in this queue set are passed to the |
|
6948da6d7c13
8052172: Evacuation failure handling in G1 does not evacuate all objects if -XX:-G1DeferredRSUpdate is set
tschatzl
parents:
20494
diff
changeset
|
342 // DirtyCardQueueSet that is used to manage RSet updates |
| 1705 | 343 DirtyCardQueue into_cset_dcq(&_g1->into_cset_dirty_card_queue_set()); |
| 344 | |
|
1708
a03ae377b2e8
6930581: G1: assert(ParallelGCThreads > 1 || n_yielded() == _hrrs->occupied(),"Should have yielded all the ..
johnc
parents:
1705
diff
changeset
|
345 assert((ParallelGCThreads > 0) || worker_i == 0, "invariant"); |
|
a03ae377b2e8
6930581: G1: assert(ParallelGCThreads > 1 || n_yielded() == _hrrs->occupied(),"Should have yielded all the ..
johnc
parents:
1705
diff
changeset
|
346 |
|
a03ae377b2e8
6930581: G1: assert(ParallelGCThreads > 1 || n_yielded() == _hrrs->occupied(),"Should have yielded all the ..
johnc
parents:
1705
diff
changeset
|
347 // The two flags below were introduced temporarily to serialize |
|
a03ae377b2e8
6930581: G1: assert(ParallelGCThreads > 1 || n_yielded() == _hrrs->occupied(),"Should have yielded all the ..
johnc
parents:
1705
diff
changeset
|
348 // the updating and scanning of remembered sets. There are some |
|
a03ae377b2e8
6930581: G1: assert(ParallelGCThreads > 1 || n_yielded() == _hrrs->occupied(),"Should have yielded all the ..
johnc
parents:
1705
diff
changeset
|
349 // race conditions when these two operations are done in parallel |
|
a03ae377b2e8
6930581: G1: assert(ParallelGCThreads > 1 || n_yielded() == _hrrs->occupied(),"Should have yielded all the ..
johnc
parents:
1705
diff
changeset
|
350 // and they are causing failures. When we resolve said race |
|
a03ae377b2e8
6930581: G1: assert(ParallelGCThreads > 1 || n_yielded() == _hrrs->occupied(),"Should have yielded all the ..
johnc
parents:
1705
diff
changeset
|
351 // conditions, we'll revert back to parallel remembered set |
|
a03ae377b2e8
6930581: G1: assert(ParallelGCThreads > 1 || n_yielded() == _hrrs->occupied(),"Should have yielded all the ..
johnc
parents:
1705
diff
changeset
|
352 // updating and scanning. See CRs 6677707 and 6677708. |
|
a03ae377b2e8
6930581: G1: assert(ParallelGCThreads > 1 || n_yielded() == _hrrs->occupied(),"Should have yielded all the ..
johnc
parents:
1705
diff
changeset
|
353 if (G1UseParallelRSetUpdating || (worker_i == 0)) { |
|
a03ae377b2e8
6930581: G1: assert(ParallelGCThreads > 1 || n_yielded() == _hrrs->occupied(),"Should have yielded all the ..
johnc
parents:
1705
diff
changeset
|
354 updateRS(&into_cset_dcq, worker_i); |
| 342 | 355 } else { |
|
6628
bb3f6194fedb
7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code
brutisso
parents:
6254
diff
changeset
|
356 _g1p->phase_times()->record_update_rs_processed_buffers(worker_i, 0); |
|
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
4839
diff
changeset
|
357 _g1p->phase_times()->record_update_rs_time(worker_i, 0.0); |
|
1708
a03ae377b2e8
6930581: G1: assert(ParallelGCThreads > 1 || n_yielded() == _hrrs->occupied(),"Should have yielded all the ..
johnc
parents:
1705
diff
changeset
|
358 } |
|
a03ae377b2e8
6930581: G1: assert(ParallelGCThreads > 1 || n_yielded() == _hrrs->occupied(),"Should have yielded all the ..
johnc
parents:
1705
diff
changeset
|
359 if (G1UseParallelRSetScanning || (worker_i == 0)) { |
| 12080 | 360 scanRS(oc, code_root_cl, worker_i); |
|
1708
a03ae377b2e8
6930581: G1: assert(ParallelGCThreads > 1 || n_yielded() == _hrrs->occupied(),"Should have yielded all the ..
johnc
parents:
1705
diff
changeset
|
361 } else { |
|
6219
922993931b3d
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
4839
diff
changeset
|
362 _g1p->phase_times()->record_scan_rs_time(worker_i, 0.0); |
| 342 | 363 } |
| 1705 | 364 |
| 365 // We now clear the cached values of _cset_rs_update_cl for this worker | |
| 366 _cset_rs_update_cl[worker_i] = NULL; | |
| 342 | 367 } |
| 368 | |
| 1861 | 369 void G1RemSet::prepare_for_oops_into_collection_set_do() { |
| 342 | 370 cleanupHRRS(); |
| 371 _g1->set_refine_cte_cl_concurrency(false); | |
| 372 DirtyCardQueueSet& dcqs = JavaThread::dirty_card_queue_set(); | |
| 373 dcqs.concatenate_logs(); | |
| 374 | |
| 375 guarantee( _cards_scanned == NULL, "invariant" ); | |
| 6197 | 376 _cards_scanned = NEW_C_HEAP_ARRAY(size_t, n_workers(), mtGC); |
| 545 | 377 for (uint i = 0; i < n_workers(); ++i) { |
| 378 _cards_scanned[i] = 0; | |
| 379 } | |
| 342 | 380 _total_cards_scanned = 0; |
| 381 } | |
| 382 | |
| 1861 | 383 void G1RemSet::cleanup_after_oops_into_collection_set_do() { |
| 342 | 384 guarantee( _cards_scanned != NULL, "invariant" ); |
| 385 _total_cards_scanned = 0; | |
|
3777
e8b0b0392037
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
3765
diff
changeset
|
386 for (uint i = 0; i < n_workers(); ++i) { |
| 342 | 387 _total_cards_scanned += _cards_scanned[i]; |
|
3777
e8b0b0392037
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
3765
diff
changeset
|
388 } |
| 6197 | 389 FREE_C_HEAP_ARRAY(size_t, _cards_scanned, mtGC); |
| 342 | 390 _cards_scanned = NULL; |
| 391 // Cleanup after copy | |
| 392 _g1->set_refine_cte_cl_concurrency(true); | |
| 393 // Set all cards back to clean. | |
| 394 _g1->cleanUpCardTable(); | |
| 794 | 395 |
| 1705 | 396 DirtyCardQueueSet& into_cset_dcqs = _g1->into_cset_dirty_card_queue_set(); |
| 397 int into_cset_n_buffers = into_cset_dcqs.completed_buffers_num(); | |
| 398 | |
|
616
4f360ec815ba
6720309: G1: don't synchronously update RSet during evacuation pauses
iveresov
parents:
545
diff
changeset
|
399 if (_g1->evacuation_failed()) { |
|
17757
eff02b5bd56c
8035654: Add times for evacuation failure handling in "Other" time
tschatzl
parents:
13059
diff
changeset
|
400 double restore_remembered_set_start = os::elapsedTime(); |
|
eff02b5bd56c
8035654: Add times for evacuation failure handling in "Other" time
tschatzl
parents:
13059
diff
changeset
|
401 |
| 1705 | 402 // Restore remembered sets for the regions pointing into the collection set. |
|
20504
6948da6d7c13
8052172: Evacuation failure handling in G1 does not evacuate all objects if -XX:-G1DeferredRSUpdate is set
tschatzl
parents:
20494
diff
changeset
|
403 // We just need to transfer the completed buffers from the DirtyCardQueueSet |
|
6948da6d7c13
8052172: Evacuation failure handling in G1 does not evacuate all objects if -XX:-G1DeferredRSUpdate is set
tschatzl
parents:
20494
diff
changeset
|
404 // used to hold cards that contain references that point into the collection set |
|
6948da6d7c13
8052172: Evacuation failure handling in G1 does not evacuate all objects if -XX:-G1DeferredRSUpdate is set
tschatzl
parents:
20494
diff
changeset
|
405 // to the DCQS used to hold the deferred RS updates. |
|
6948da6d7c13
8052172: Evacuation failure handling in G1 does not evacuate all objects if -XX:-G1DeferredRSUpdate is set
tschatzl
parents:
20494
diff
changeset
|
406 _g1->dirty_card_queue_set().merge_bufferlists(&into_cset_dcqs); |
|
17757
eff02b5bd56c
8035654: Add times for evacuation failure handling in "Other" time
tschatzl
parents:
13059
diff
changeset
|
407 _g1->g1_policy()->phase_times()->record_evac_fail_restore_remsets((os::elapsedTime() - restore_remembered_set_start) * 1000.0); |
|
616
4f360ec815ba
6720309: G1: don't synchronously update RSet during evacuation pauses
iveresov
parents:
545
diff
changeset
|
408 } |
| 1705 | 409 |
| 410 // Free any completed buffers in the DirtyCardQueueSet used to hold cards | |
| 411 // which contain references that point into the collection. | |
| 412 _g1->into_cset_dirty_card_queue_set().clear(); | |
| 413 assert(_g1->into_cset_dirty_card_queue_set().completed_buffers_num() == 0, | |
| 414 "all buffers should be freed"); | |
| 415 _g1->into_cset_dirty_card_queue_set().clear_n_completed_buffers(); | |
| 342 | 416 } |
| 417 | |
| 418 class ScrubRSClosure: public HeapRegionClosure { | |
| 419 G1CollectedHeap* _g1h; | |
| 420 BitMap* _region_bm; | |
| 421 BitMap* _card_bm; | |
| 422 CardTableModRefBS* _ctbs; | |
| 423 public: | |
| 424 ScrubRSClosure(BitMap* region_bm, BitMap* card_bm) : | |
| 425 _g1h(G1CollectedHeap::heap()), | |
| 426 _region_bm(region_bm), _card_bm(card_bm), | |
| 12343 | 427 _ctbs(_g1h->g1_barrier_set()) {} |
| 342 | 428 |
| 429 bool doHeapRegion(HeapRegion* r) { | |
| 430 if (!r->continuesHumongous()) { | |
| 431 r->rem_set()->scrub(_ctbs, _region_bm, _card_bm); | |
| 432 } | |
| 433 return false; | |
| 434 } | |
| 435 }; | |
| 436 | |
| 1861 | 437 void G1RemSet::scrub(BitMap* region_bm, BitMap* card_bm) { |
| 342 | 438 ScrubRSClosure scrub_cl(region_bm, card_bm); |
| 439 _g1->heap_region_iterate(&scrub_cl); | |
| 440 } | |
| 441 | |
| 1861 | 442 void G1RemSet::scrub_par(BitMap* region_bm, BitMap* card_bm, |
|
4728
441e946dc1af
7121618: Change type of number of GC workers to unsigned int.
jmasa
parents:
4097
diff
changeset
|
443 uint worker_num, int claim_val) { |
| 342 | 444 ScrubRSClosure scrub_cl(region_bm, card_bm); |
|
4095
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
445 _g1->heap_region_par_iterate_chunked(&scrub_cl, |
|
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
446 worker_num, |
|
4728
441e946dc1af
7121618: Change type of number of GC workers to unsigned int.
jmasa
parents:
4097
diff
changeset
|
447 n_workers(), |
|
4095
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
448 claim_val); |
| 342 | 449 } |
| 450 | |
| 4839 | 451 G1TriggerClosure::G1TriggerClosure() : |
| 452 _triggered(false) { } | |
| 453 | |
| 454 G1InvokeIfNotTriggeredClosure::G1InvokeIfNotTriggeredClosure(G1TriggerClosure* t_cl, | |
| 455 OopClosure* oop_cl) : | |
| 456 _trigger_cl(t_cl), _oop_cl(oop_cl) { } | |
| 1705 | 457 |
| 4839 | 458 G1Mux2Closure::G1Mux2Closure(OopClosure *c1, OopClosure *c2) : |
| 459 _c1(c1), _c2(c2) { } | |
| 1705 | 460 |
| 4839 | 461 G1UpdateRSOrPushRefOopClosure:: |
| 462 G1UpdateRSOrPushRefOopClosure(G1CollectedHeap* g1h, | |
| 463 G1RemSet* rs, | |
| 464 OopsInHeapRegionClosure* push_ref_cl, | |
| 465 bool record_refs_into_cset, | |
|
17844
8847586c9037
8016302: Change type of the number of GC workers to unsigned int (2)
vkempik
parents:
17757
diff
changeset
|
466 uint worker_i) : |
| 4839 | 467 _g1(g1h), _g1_rem_set(rs), _from(NULL), |
| 468 _record_refs_into_cset(record_refs_into_cset), | |
| 469 _push_ref_cl(push_ref_cl), _worker_i(worker_i) { } | |
| 1705 | 470 |
|
10246
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
471 // Returns true if the given card contains references that point |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
472 // into the collection set, if we're checking for such references; |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
473 // false otherwise. |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
474 |
|
17844
8847586c9037
8016302: Change type of the number of GC workers to unsigned int (2)
vkempik
parents:
17757
diff
changeset
|
475 bool G1RemSet::refine_card(jbyte* card_ptr, uint worker_i, |
|
10246
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
476 bool check_for_refs_into_cset) { |
| 20337 | 477 assert(_g1->is_in_exact(_ct_bs->addr_for(card_ptr)), |
| 478 err_msg("Card at "PTR_FORMAT" index "SIZE_FORMAT" representing heap at "PTR_FORMAT" (%u) must be in committed heap", | |
| 479 p2i(card_ptr), | |
| 480 _ct_bs->index_for(_ct_bs->addr_for(card_ptr)), | |
| 481 _ct_bs->addr_for(card_ptr), | |
| 482 _g1->addr_to_region(_ct_bs->addr_for(card_ptr)))); | |
|
10246
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
483 |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
484 // If the card is no longer dirty, nothing to do. |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
485 if (*card_ptr != CardTableModRefBS::dirty_card_val()) { |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
486 // No need to return that this card contains refs that point |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
487 // into the collection set. |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
488 return false; |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
489 } |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
490 |
|
890
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
491 // Construct the region representing the card. |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
492 HeapWord* start = _ct_bs->addr_for(card_ptr); |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
493 // And find the region containing it. |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
494 HeapRegion* r = _g1->heap_region_containing(start); |
|
10246
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
495 |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
496 // Why do we have to check here whether a card is on a young region, |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
497 // given that we dirty young regions and, as a result, the |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
498 // post-barrier is supposed to filter them out and never to enqueue |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
499 // them? When we allocate a new region as the "allocation region" we |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
500 // actually dirty its cards after we release the lock, since card |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
501 // dirtying while holding the lock was a performance bottleneck. So, |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
502 // as a result, it is possible for other threads to actually |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
503 // allocate objects in the region (after the acquire the lock) |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
504 // before all the cards on the region are dirtied. This is unlikely, |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
505 // and it doesn't happen often, but it can happen. So, the extra |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
506 // check below filters out those cards. |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
507 if (r->is_young()) { |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
508 return false; |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
509 } |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
510 |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
511 // While we are processing RSet buffers during the collection, we |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
512 // actually don't want to scan any cards on the collection set, |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
513 // since we don't want to update remebered sets with entries that |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
514 // point into the collection set, given that live objects from the |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
515 // collection set are about to move and such entries will be stale |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
516 // very soon. This change also deals with a reliability issue which |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
517 // involves scanning a card in the collection set and coming across |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
518 // an array that was being chunked and looking malformed. Note, |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
519 // however, that if evacuation fails, we have to scan any objects |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
520 // that were not moved and create any missing entries. |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
521 if (r->in_collection_set()) { |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
522 return false; |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
523 } |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
524 |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
525 // The result from the hot card cache insert call is either: |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
526 // * pointer to the current card |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
527 // (implying that the current card is not 'hot'), |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
528 // * null |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
529 // (meaning we had inserted the card ptr into the "hot" card cache, |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
530 // which had some headroom), |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
531 // * a pointer to a "hot" card that was evicted from the "hot" cache. |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
532 // |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
533 |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
534 G1HotCardCache* hot_card_cache = _cg1r->hot_card_cache(); |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
535 if (hot_card_cache->use_cache()) { |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
536 assert(!check_for_refs_into_cset, "sanity"); |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
537 assert(!SafepointSynchronize::is_at_safepoint(), "sanity"); |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
538 |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
539 card_ptr = hot_card_cache->insert(card_ptr); |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
540 if (card_ptr == NULL) { |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
541 // There was no eviction. Nothing to do. |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
542 return false; |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
543 } |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
544 |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
545 start = _ct_bs->addr_for(card_ptr); |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
546 r = _g1->heap_region_containing(start); |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
547 |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
548 // Checking whether the region we got back from the cache |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
549 // is young here is inappropriate. The region could have been |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
550 // freed, reallocated and tagged as young while in the cache. |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
551 // Hence we could see its young type change at any time. |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
552 } |
|
890
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
553 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
554 // Don't use addr_for(card_ptr + 1) which can ask for |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
555 // a card beyond the heap. This is not safe without a perm |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
556 // gen at the upper end of the heap. |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
557 HeapWord* end = start + CardTableModRefBS::card_size_in_words; |
|
890
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
558 MemRegion dirtyRegion(start, end); |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
559 |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
560 #if CARD_REPEAT_HISTO |
|
2188
c33825b68624
6923430: G1: assert(res != 0,"This should have worked.")
johnc
parents:
1972
diff
changeset
|
561 init_ct_freq_table(_g1->max_capacity()); |
|
890
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
562 ct_freq_note_card(_ct_bs->index_for(start)); |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
563 #endif |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
564 |
|
4071
ed80554efa25
7106751: G1: gc/gctests/nativeGC03 crashes VM with SIGSEGV
brutisso
parents:
4023
diff
changeset
|
565 OopsInHeapRegionClosure* oops_in_heap_closure = NULL; |
|
ed80554efa25
7106751: G1: gc/gctests/nativeGC03 crashes VM with SIGSEGV
brutisso
parents:
4023
diff
changeset
|
566 if (check_for_refs_into_cset) { |
|
ed80554efa25
7106751: G1: gc/gctests/nativeGC03 crashes VM with SIGSEGV
brutisso
parents:
4023
diff
changeset
|
567 // ConcurrentG1RefineThreads have worker numbers larger than what |
|
ed80554efa25
7106751: G1: gc/gctests/nativeGC03 crashes VM with SIGSEGV
brutisso
parents:
4023
diff
changeset
|
568 // _cset_rs_update_cl[] is set up to handle. But those threads should |
|
ed80554efa25
7106751: G1: gc/gctests/nativeGC03 crashes VM with SIGSEGV
brutisso
parents:
4023
diff
changeset
|
569 // only be active outside of a collection which means that when they |
|
ed80554efa25
7106751: G1: gc/gctests/nativeGC03 crashes VM with SIGSEGV
brutisso
parents:
4023
diff
changeset
|
570 // reach here they should have check_for_refs_into_cset == false. |
|
ed80554efa25
7106751: G1: gc/gctests/nativeGC03 crashes VM with SIGSEGV
brutisso
parents:
4023
diff
changeset
|
571 assert((size_t)worker_i < n_workers(), "index of worker larger than _cset_rs_update_cl[].length"); |
|
ed80554efa25
7106751: G1: gc/gctests/nativeGC03 crashes VM with SIGSEGV
brutisso
parents:
4023
diff
changeset
|
572 oops_in_heap_closure = _cset_rs_update_cl[worker_i]; |
|
ed80554efa25
7106751: G1: gc/gctests/nativeGC03 crashes VM with SIGSEGV
brutisso
parents:
4023
diff
changeset
|
573 } |
| 4839 | 574 G1UpdateRSOrPushRefOopClosure update_rs_oop_cl(_g1, |
| 575 _g1->g1_rem_set(), | |
| 576 oops_in_heap_closure, | |
| 577 check_for_refs_into_cset, | |
| 578 worker_i); | |
|
890
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
579 update_rs_oop_cl.set_from(r); |
| 1705 | 580 |
| 4839 | 581 G1TriggerClosure trigger_cl; |
|
3983
811ec3d0833b
7097053: G1: assert(da ? referent->is_oop() : referent->is_oop_or_null()) failed: referenceProcessor.cpp:1054
johnc
parents:
3979
diff
changeset
|
582 FilterIntoCSClosure into_cs_cl(NULL, _g1, &trigger_cl); |
| 4839 | 583 G1InvokeIfNotTriggeredClosure invoke_cl(&trigger_cl, &into_cs_cl); |
| 584 G1Mux2Closure mux(&invoke_cl, &update_rs_oop_cl); | |
| 1705 | 585 |
| 586 FilterOutOfRegionClosure filter_then_update_rs_oop_cl(r, | |
| 587 (check_for_refs_into_cset ? | |
| 588 (OopClosure*)&mux : | |
| 589 (OopClosure*)&update_rs_oop_cl)); | |
|
890
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
590 |
|
1666
5cbac8938c4c
6956639: G1: assert(cached_ptr != card_ptr) failed: shouldn't be, concurrentG1Refine.cpp:307
johnc
parents:
1611
diff
changeset
|
591 // The region for the current card may be a young region. The |
|
5cbac8938c4c
6956639: G1: assert(cached_ptr != card_ptr) failed: shouldn't be, concurrentG1Refine.cpp:307
johnc
parents:
1611
diff
changeset
|
592 // current card may have been a card that was evicted from the |
|
5cbac8938c4c
6956639: G1: assert(cached_ptr != card_ptr) failed: shouldn't be, concurrentG1Refine.cpp:307
johnc
parents:
1611
diff
changeset
|
593 // card cache. When the card was inserted into the cache, we had |
|
5cbac8938c4c
6956639: G1: assert(cached_ptr != card_ptr) failed: shouldn't be, concurrentG1Refine.cpp:307
johnc
parents:
1611
diff
changeset
|
594 // determined that its region was non-young. While in the cache, |
|
5cbac8938c4c
6956639: G1: assert(cached_ptr != card_ptr) failed: shouldn't be, concurrentG1Refine.cpp:307
johnc
parents:
1611
diff
changeset
|
595 // the region may have been freed during a cleanup pause, reallocated |
|
5cbac8938c4c
6956639: G1: assert(cached_ptr != card_ptr) failed: shouldn't be, concurrentG1Refine.cpp:307
johnc
parents:
1611
diff
changeset
|
596 // and tagged as young. |
|
5cbac8938c4c
6956639: G1: assert(cached_ptr != card_ptr) failed: shouldn't be, concurrentG1Refine.cpp:307
johnc
parents:
1611
diff
changeset
|
597 // |
|
5cbac8938c4c
6956639: G1: assert(cached_ptr != card_ptr) failed: shouldn't be, concurrentG1Refine.cpp:307
johnc
parents:
1611
diff
changeset
|
598 // We wish to filter out cards for such a region but the current |
|
3317
063382f9b575
7035144: G1: nightly failure: Non-dirty cards in region that should be dirty (failures still exist...)
tonyp
parents:
2364
diff
changeset
|
599 // thread, if we're running concurrently, may "see" the young type |
|
1666
5cbac8938c4c
6956639: G1: assert(cached_ptr != card_ptr) failed: shouldn't be, concurrentG1Refine.cpp:307
johnc
parents:
1611
diff
changeset
|
600 // change at any time (so an earlier "is_young" check may pass or |
|
5cbac8938c4c
6956639: G1: assert(cached_ptr != card_ptr) failed: shouldn't be, concurrentG1Refine.cpp:307
johnc
parents:
1611
diff
changeset
|
601 // fail arbitrarily). We tell the iteration code to perform this |
|
5cbac8938c4c
6956639: G1: assert(cached_ptr != card_ptr) failed: shouldn't be, concurrentG1Refine.cpp:307
johnc
parents:
1611
diff
changeset
|
602 // filtering when it has been determined that there has been an actual |
|
5cbac8938c4c
6956639: G1: assert(cached_ptr != card_ptr) failed: shouldn't be, concurrentG1Refine.cpp:307
johnc
parents:
1611
diff
changeset
|
603 // allocation in this region and making it safe to check the young type. |
|
5cbac8938c4c
6956639: G1: assert(cached_ptr != card_ptr) failed: shouldn't be, concurrentG1Refine.cpp:307
johnc
parents:
1611
diff
changeset
|
604 bool filter_young = true; |
|
5cbac8938c4c
6956639: G1: assert(cached_ptr != card_ptr) failed: shouldn't be, concurrentG1Refine.cpp:307
johnc
parents:
1611
diff
changeset
|
605 |
|
890
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
606 HeapWord* stop_point = |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
607 r->oops_on_card_seq_iterate_careful(dirtyRegion, |
|
1666
5cbac8938c4c
6956639: G1: assert(cached_ptr != card_ptr) failed: shouldn't be, concurrentG1Refine.cpp:307
johnc
parents:
1611
diff
changeset
|
608 &filter_then_update_rs_oop_cl, |
|
3317
063382f9b575
7035144: G1: nightly failure: Non-dirty cards in region that should be dirty (failures still exist...)
tonyp
parents:
2364
diff
changeset
|
609 filter_young, |
|
063382f9b575
7035144: G1: nightly failure: Non-dirty cards in region that should be dirty (failures still exist...)
tonyp
parents:
2364
diff
changeset
|
610 card_ptr); |
|
1666
5cbac8938c4c
6956639: G1: assert(cached_ptr != card_ptr) failed: shouldn't be, concurrentG1Refine.cpp:307
johnc
parents:
1611
diff
changeset
|
611 |
|
890
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
612 // If stop_point is non-null, then we encountered an unallocated region |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
613 // (perhaps the unfilled portion of a TLAB.) For now, we'll dirty the |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
614 // card and re-enqueue: if we put off the card until a GC pause, then the |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
615 // unallocated portion will be filled in. Alternatively, we might try |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
616 // the full complexity of the technique used in "regular" precleaning. |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
617 if (stop_point != NULL) { |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
618 // The card might have gotten re-dirtied and re-enqueued while we |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
619 // worked. (In fact, it's pretty likely.) |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
620 if (*card_ptr != CardTableModRefBS::dirty_card_val()) { |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
621 *card_ptr = CardTableModRefBS::dirty_card_val(); |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
622 MutexLockerEx x(Shared_DirtyCardQ_lock, |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
623 Mutex::_no_safepoint_check_flag); |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
624 DirtyCardQueue* sdcq = |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
625 JavaThread::dirty_card_queue_set().shared_dirty_card_queue(); |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
626 sdcq->enqueue(card_ptr); |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
627 } |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
628 } else { |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
629 _conc_refine_cards++; |
|
6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
johnc
parents:
845
diff
changeset
|
630 } |
| 1705 | 631 |
|
10246
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
632 // This gets set to true if the card being refined has |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
633 // references that point into the collection set. |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
634 bool has_refs_into_cset = trigger_cl.triggered(); |
| 342 | 635 |
|
10246
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
636 // We should only be detecting that the card contains references |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
637 // that point into the collection set if the current thread is |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
638 // a GC worker thread. |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
639 assert(!has_refs_into_cset || SafepointSynchronize::is_at_safepoint(), |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
640 "invalid result at non safepoint"); |
| 1705 | 641 |
|
10246
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
642 return has_refs_into_cset; |
| 342 | 643 } |
| 644 | |
|
12339
c319b188c7b2
8014078: G1: improve remembered set summary information by providing per region type information
tschatzl
parents:
12080
diff
changeset
|
645 void G1RemSet::print_periodic_summary_info(const char* header) { |
|
10372
e72f7eecc96d
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
10246
diff
changeset
|
646 G1RemSetSummary current; |
|
12344
7ec10139bf37
8025441: G1: assert "assert(thread < _num_vtimes) failed: just checking" fails when G1ConcRefinementThreads > ParallelGCThreads
tschatzl
parents:
12343
diff
changeset
|
647 current.initialize(this); |
| 342 | 648 |
|
10372
e72f7eecc96d
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
10246
diff
changeset
|
649 _prev_period_summary.subtract_from(¤t); |
|
12339
c319b188c7b2
8014078: G1: improve remembered set summary information by providing per region type information
tschatzl
parents:
12080
diff
changeset
|
650 print_summary_info(&_prev_period_summary, header); |
| 342 | 651 |
|
10372
e72f7eecc96d
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
10246
diff
changeset
|
652 _prev_period_summary.set(¤t); |
|
e72f7eecc96d
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
10246
diff
changeset
|
653 } |
| 794 | 654 |
| 1861 | 655 void G1RemSet::print_summary_info() { |
|
10372
e72f7eecc96d
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
10246
diff
changeset
|
656 G1RemSetSummary current; |
|
12344
7ec10139bf37
8025441: G1: assert "assert(thread < _num_vtimes) failed: just checking" fails when G1ConcRefinementThreads > ParallelGCThreads
tschatzl
parents:
12343
diff
changeset
|
657 current.initialize(this); |
|
10372
e72f7eecc96d
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
10246
diff
changeset
|
658 |
|
e72f7eecc96d
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
10246
diff
changeset
|
659 print_summary_info(¤t, " Cumulative RS summary"); |
|
e72f7eecc96d
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
10246
diff
changeset
|
660 } |
|
e72f7eecc96d
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
10246
diff
changeset
|
661 |
|
e72f7eecc96d
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
10246
diff
changeset
|
662 void G1RemSet::print_summary_info(G1RemSetSummary * summary, const char * header) { |
|
e72f7eecc96d
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
10246
diff
changeset
|
663 assert(summary != NULL, "just checking"); |
|
e72f7eecc96d
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
10246
diff
changeset
|
664 |
|
e72f7eecc96d
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
10246
diff
changeset
|
665 if (header != NULL) { |
|
e72f7eecc96d
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
10246
diff
changeset
|
666 gclog_or_tty->print_cr("%s", header); |
|
e72f7eecc96d
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
10246
diff
changeset
|
667 } |
| 342 | 668 |
| 669 #if CARD_REPEAT_HISTO | |
| 670 gclog_or_tty->print_cr("\nG1 card_repeat count histogram: "); | |
| 671 gclog_or_tty->print_cr(" # of repeats --> # of cards with that number."); | |
| 672 card_repeat_count.print_on(gclog_or_tty); | |
| 673 #endif | |
| 674 | |
|
10372
e72f7eecc96d
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
10246
diff
changeset
|
675 summary->print_on(gclog_or_tty); |
| 342 | 676 } |
| 1705 | 677 |
| 1861 | 678 void G1RemSet::prepare_for_verify() { |
|
637
25e146966e7c
6817419: G1: Enable extensive verification for humongous regions
iveresov
parents:
626
diff
changeset
|
679 if (G1HRRSFlushLogBuffersOnVerify && |
|
25e146966e7c
6817419: G1: Enable extensive verification for humongous regions
iveresov
parents:
626
diff
changeset
|
680 (VerifyBeforeGC || VerifyAfterGC) |
|
10373
3a4805ad0005
8015244: G1: Verification after a full GC is incorrectly placed.
johnc
parents:
10372
diff
changeset
|
681 && (!_g1->full_collection() || G1VerifyRSetsDuringFullGC)) { |
| 342 | 682 cleanupHRRS(); |
| 683 _g1->set_refine_cte_cl_concurrency(false); | |
| 684 if (SafepointSynchronize::is_at_safepoint()) { | |
| 685 DirtyCardQueueSet& dcqs = JavaThread::dirty_card_queue_set(); | |
| 686 dcqs.concatenate_logs(); | |
| 687 } | |
|
10246
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
688 |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
689 G1HotCardCache* hot_card_cache = _cg1r->hot_card_cache(); |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
690 bool use_hot_card_cache = hot_card_cache->use_cache(); |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
691 hot_card_cache->set_use_cache(false); |
|
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
692 |
| 1705 | 693 DirtyCardQueue into_cset_dcq(&_g1->into_cset_dirty_card_queue_set()); |
| 694 updateRS(&into_cset_dcq, 0); | |
| 695 _g1->into_cset_dirty_card_queue_set().clear(); | |
|
637
25e146966e7c
6817419: G1: Enable extensive verification for humongous regions
iveresov
parents:
626
diff
changeset
|
696 |
|
10246
194f52aa2f23
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
10182
diff
changeset
|
697 hot_card_cache->set_use_cache(use_hot_card_cache); |
|
637
25e146966e7c
6817419: G1: Enable extensive verification for humongous regions
iveresov
parents:
626
diff
changeset
|
698 assert(JavaThread::dirty_card_queue_set().completed_buffers_num() == 0, "All should be consumed"); |
| 342 | 699 } |
| 700 } |