PostgreSQL Source Code: src/backend/utils/mmgr/mcxt.c Source File (original) (raw)
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47
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49static void BogusFree(void *pointer);
50static void *BogusRealloc(void *pointer, Size size, int flags);
53
54
55
56
57#define BOGUS_MCTX(id) \
58 [id].free_p = BogusFree, \
59 [id].realloc = BogusRealloc, \
60 [id].get_chunk_context = BogusGetChunkContext, \
61 [id].get_chunk_space = BogusGetChunkSpace
62
64
74#ifdef MEMORY_CONTEXT_CHECKING
76#endif
77
78
88#ifdef MEMORY_CONTEXT_CHECKING
90#endif
91
92
102#ifdef MEMORY_CONTEXT_CHECKING
104#endif
105
106
116#ifdef MEMORY_CONTEXT_CHECKING
118#endif
119
120
130#ifdef MEMORY_CONTEXT_CHECKING
132#endif
133
134
135
136
137
138
139
140
152};
153
154#undef BOGUS_MCTX
155
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174
176
180 int max_level, int max_children,
182 bool print_to_stderr);
184 const char *stats_string,
185 bool print_to_stderr);
186
187
188
189
190
191
192#define AssertNotInCriticalSection(context) \
193 Assert(CritSectionCount == 0 || (context)->allowInCritSection)
194
195
196
197
198
199#define MCXT_METHOD(pointer, method) \
200 mcxt_methods[GetMemoryChunkMethodID(pointer)].method
201
202
203
204
205
206
209{
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219
221
222 header = *((const uint64 *) ((const char *) pointer - sizeof(uint64)));
223
224
226
228}
229
230
231
232
233
234
235
238{
240
241
243
244 header = *((const uint64 *) ((const char *) pointer - sizeof(uint64)));
245
246
248
249 return header;
250}
251
252
253
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262
263
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269
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271
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275{
276
279
280
281
282
283
284
285
286
288 {
290 if (curr == top)
291 return NULL;
292 }
294}
295
296
297
298
299
300
301
302static void
304{
305 elog(ERROR, "pfree called with invalid pointer %p (header 0x%016" PRIx64 ")",
307}
308
309static void *
311{
312 elog(ERROR, "repalloc called with invalid pointer %p (header 0x%016" PRIx64 ")",
314 return NULL;
315}
316
319{
320 elog(ERROR, "GetMemoryChunkContext called with invalid pointer %p (header 0x%016" PRIx64 ")",
322 return NULL;
323}
324
327{
328 elog(ERROR, "GetMemoryChunkSpace called with invalid pointer %p (header 0x%016" PRIx64 ")",
330 return 0;
331}
332
333
334
335
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355void
357{
359
360
361
362
364 "TopMemoryContext",
366
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369
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377
378
379
380
381
382
383
384
385
387 "ErrorContext",
388 8 * 1024,
389 8 * 1024,
390 8 * 1024);
392}
393
394
395
396
397
398
399void
401{
403
404
407
408
411}
412
413
414
415
416
417
418void
420{
422
423
425 {
427
428
429
430
431
432
433
434
435
438 }
439}
440
441
442
443
444
445
446
447void
449{
451
453 curr != NULL;
455 {
457 }
458}
459
460
461
462
463
464
465
466
467
468void
470{
472
474
475
476
477
478
479
480
481
482
483 curr = context;
484 for (;;)
485 {
487
488
491
492
493
494
495
496 parent = curr->parent;
498
499 if (curr == context)
500 break;
501 curr = parent;
502 }
503}
504
505
506
507
508
509
510static void
512{
514
516
518
520
521
522
523
524
525
526
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530
531
532
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536
537
538
539
540
541 context->ident = NULL;
542
544}
545
546
547
548
549
550
551void
553{
555
556
557
558
559
562}
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578void
581{
583
584
587
588 context->isReset = false;
589}
590
591
592
593
594
595
596
597
598
599
600
601
602
603void
606{
609
611
614 {
615 if (cur != cb)
616 continue;
617 if (prev)
619 else
621 return;
622 }
624}
625
626
627
628
629
630static void
632{
634
635
636
637
638
639
640 while ((cb = context->reset_cbs) != NULL)
641 {
644 }
645}
646
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649
650
651
652
653
654
655
656
657void
659{
661 context->ident = id;
662}
663
664
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673
674
675
676
677
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679
680
681
682void
684{
686 Assert(context != new_parent);
687
688
689 if (new_parent == context->parent)
690 return;
691
692
694 {
696
699 else
700 {
703 }
704
707 }
708
709
710 if (new_parent)
711 {
713 context->parent = new_parent;
719 }
720 else
721 {
722 context->parent = NULL;
725 }
726}
727
728
729
730
731
732
733
734
735
736
737
738
739void
741{
743
745}
746
747
748
749
750
751
754{
755 return MCXT_METHOD(pointer, get_chunk_context) (pointer);
756}
757
758
759
760
761
762
763
764
765
768{
769 return MCXT_METHOD(pointer, get_chunk_space) (pointer);
770}
771
772
773
774
775
778{
780
781 return context->parent;
782}
783
784
785
786
787
788bool
790{
792
793
794
795
796
798 return false;
799
801}
802
803
804
805
806
809{
811
813
814 if (recurse)
815 {
817 curr != NULL;
819 {
820 total += curr->mem_allocated;
821 }
822 }
823
824 return total;
825}
826
827
828
829
830
831void
834{
836
837 memset(consumed, 0, sizeof(*consumed));
838
839
840 context->methods->stats(context, NULL, NULL, consumed, false);
841
842
844 curr != NULL;
846 {
847 curr->methods->stats(curr, NULL, NULL, consumed, false);
848 }
849}
850
851
852
853
854
855
856
857
858
859void
861{
862
864}
865
866
867
868
869
870
871
872
873
874void
876 int max_level, int max_children,
877 bool print_to_stderr)
878{
880
881 memset(&grand_totals, 0, sizeof(grand_totals));
882
884 &grand_totals, print_to_stderr);
885
886 if (print_to_stderr)
888 "Grand total: %zu bytes in %zu blocks; %zu free (%zu chunks); %zu used\n",
892 else
893 {
894
895
896
897
898
899
900
901
902
903
907 errmsg_internal("Grand total: %zu bytes in %zu blocks; %zu free (%zu chunks); %zu used",
911 }
912}
913
914
915
916
917
918
919
920
921static void
923 int max_level, int max_children,
925 bool print_to_stderr)
926{
928 int ichild;
929
931
932
935 &level,
936 totals, print_to_stderr);
937
938
939
940
941
942
943
944
945
947 ichild = 0;
949 {
950 for (; child != NULL && ichild < max_children;
951 child = child->nextchild, ichild++)
952 {
954 max_level, max_children,
955 totals,
956 print_to_stderr);
957 }
958 }
959
960 if (child != NULL)
961 {
962
964
965 memset(&local_totals, 0, sizeof(local_totals));
966
967 ichild = 0;
968 while (child != NULL)
969 {
970 child->methods->stats(child, NULL, NULL, &local_totals, false);
971 ichild++;
973 }
974
975 if (print_to_stderr)
976 {
977 for (int i = 0; i < level; i++)
980 "%d more child contexts containing %zu total in %zu blocks; %zu free (%zu chunks); %zu used\n",
981 ichild,
987 }
988 else
992 errmsg_internal("level: %d; %d more child contexts containing %zu total in %zu blocks; %zu free (%zu chunks); %zu used",
993 level,
994 ichild,
1000
1001 if (totals)
1002 {
1007 }
1008 }
1009}
1010
1011
1012
1013
1014
1015
1016
1017
1018static void
1020 const char *stats_string,
1021 bool print_to_stderr)
1022{
1023 int level = *(int *) passthru;
1024 const char *name = context->name;
1026 char truncated_ident[110];
1027 int i;
1028
1029
1030
1031
1032
1033
1034 if (ident && strcmp(name, "dynahash") == 0)
1035 {
1038 }
1039
1040 truncated_ident[0] = '\0';
1041
1043 {
1044
1045
1046
1047
1048
1049
1050 int idlen = strlen(ident);
1051 bool truncated = false;
1052
1053 strcpy(truncated_ident, ": ");
1054 i = strlen(truncated_ident);
1055
1056 if (idlen > 100)
1057 {
1059 truncated = true;
1060 }
1061
1062 while (idlen-- > 0)
1063 {
1064 unsigned char c = *ident++;
1065
1066 if (c < ' ')
1067 c = ' ';
1068 truncated_ident[i++] = c;
1069 }
1070 truncated_ident[i] = '\0';
1071
1072 if (truncated)
1073 strcat(truncated_ident, "...");
1074 }
1075
1076 if (print_to_stderr)
1077 {
1078 for (i = 1; i < level; i++)
1080 fprintf(stderr, "%s: %s%s\n", name, stats_string, truncated_ident);
1081 }
1082 else
1087 level, name, stats_string, truncated_ident)));
1088}
1089
1090
1091
1092
1093
1094
1095
1096#ifdef MEMORY_CONTEXT_CHECKING
1097void
1099{
1101 context->methods->check(context);
1102
1104 curr != NULL;
1106 {
1108 curr->methods->check(curr);
1109 }
1110}
1111#endif
1112
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1144
1145void
1150 const char *name)
1151{
1152
1154
1155
1157 Assert(node != parent);
1158
1159
1160 node->type = tag;
1163 node->parent = parent;
1168 node->ident = NULL;
1170
1171
1172 if (parent)
1173 {
1178
1180 }
1181 else
1182 {
1185 }
1186}
1187
1188
1189
1190
1191
1192
1193
1194void *
1196{
1198 {
1202 (errcode(ERRCODE_OUT_OF_MEMORY),
1203 errmsg("out of memory"),
1204 errdetail("Failed on request of size %zu in memory context \"%s\".",
1205 size, context->name)));
1206 }
1207 return NULL;
1208}
1209
1210
1211
1212
1213
1214
1215void
1217{
1218 elog(ERROR, "invalid memory alloc request size %zu", size);
1219}
1220
1221
1222
1223
1224
1225
1226
1227
1228void *
1230{
1231 void *ret;
1232
1235
1236 context->isReset = false;
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248 ret = context->methods->alloc(context, size, 0);
1249
1251
1252 return ret;
1253}
1254
1255
1256
1257
1258
1259
1260
1261
1262void *
1264{
1265 void *ret;
1266
1269
1270 context->isReset = false;
1271
1272 ret = context->methods->alloc(context, size, 0);
1273
1275
1277
1278 return ret;
1279}
1280
1281
1282
1283
1284
1285void *
1287{
1288 void *ret;
1289
1292
1295 elog(ERROR, "invalid memory alloc request size %zu", size);
1296
1297 context->isReset = false;
1298
1299 ret = context->methods->alloc(context, size, flags);
1301 return NULL;
1302
1304
1307
1308 return ret;
1309}
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319void
1321{
1324
1325}
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336void
1338{
1340
1341
1342
1343
1344
1348 errmsg("logging memory contexts of PID %d", MyProcPid)));
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1362}
1363
1364void *
1366{
1367
1368 void *ret;
1370
1373
1374 context->isReset = false;
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386 ret = context->methods->alloc(context, size, 0);
1387
1388 Assert(ret != NULL);
1390
1391 return ret;
1392}
1393
1394void *
1396{
1397
1398 void *ret;
1400
1403
1404 context->isReset = false;
1405
1406 ret = context->methods->alloc(context, size, 0);
1407
1408 Assert(ret != NULL);
1410
1412
1413 return ret;
1414}
1415
1416void *
1418{
1419
1420 void *ret;
1422
1425
1426 context->isReset = false;
1427
1428 ret = context->methods->alloc(context, size, flags);
1430 {
1431
1433 return NULL;
1434 }
1435
1437
1440
1441 return ret;
1442}
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459void *
1461 Size size, Size alignto, int flags)
1462{
1464 Size alloc_size;
1465 void *unaligned;
1466 void *aligned;
1467
1468
1469
1470
1471
1472
1473
1474
1475 Assert(alignto < (128 * 1024 * 1024));
1476
1477
1478 Assert((alignto & (alignto - 1)) == 0);
1479
1480
1481
1482
1483
1484 if (unlikely(alignto <= MAXIMUM_ALIGNOF))
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1505
1506#ifdef MEMORY_CONTEXT_CHECKING
1507
1508 alloc_size += 1;
1509#endif
1510
1511
1512
1513
1514
1515
1518
1519
1520 aligned = (void *) TYPEALIGN(alignto, (char *) unaligned +
1522
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1537
1538
1539 Assert((void *) TYPEALIGN(alignto, aligned) == aligned);
1540
1541#ifdef MEMORY_CONTEXT_CHECKING
1542 alignedchunk->requested_size = size;
1543
1544 set_sentinel(aligned, size);
1545#endif
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1560
1561
1564
1565 return aligned;
1566}
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583void *
1585{
1587}
1588
1589
1590
1591
1592
1593void
1595{
1596#ifdef USE_VALGRIND
1598#endif
1599
1601
1603}
1604
1605
1606
1607
1608
1609void *
1611{
1612#if defined(USE_ASSERT_CHECKING) || defined(USE_VALGRIND)
1614#endif
1615 void *ret;
1616
1618
1619
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1633
1635
1636 return ret;
1637}
1638
1639
1640
1641
1642
1643
1644void *
1646{
1647#if defined(USE_ASSERT_CHECKING) || defined(USE_VALGRIND)
1649#endif
1650 void *ret;
1651
1653
1654
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1669 return NULL;
1670
1672
1673 return ret;
1674}
1675
1676
1677
1678
1679
1680
1681void *
1683{
1684 void *ret;
1685
1686
1687 if (unlikely(oldsize > size))
1688 elog(ERROR, "invalid repalloc0 call: oldsize %zu, new size %zu",
1689 oldsize, size);
1690
1691 ret = repalloc(pointer, size);
1692 memset((char *) ret + oldsize, 0, (size - oldsize));
1693 return ret;
1694}
1695
1696
1697
1698
1699
1700
1701
1702void *
1704{
1705 void *ret;
1706
1709
1710 context->isReset = false;
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1723
1725
1726 return ret;
1727}
1728
1729
1730
1731
1732
1733
1734void *
1736{
1737
1739}
1740
1741
1742
1743
1744
1745char *
1747{
1748 char *nstr;
1749 Size len = strlen(string) + 1;
1750
1752
1753 memcpy(nstr, string, len);
1754
1755 return nstr;
1756}
1757
1758char *
1760{
1762}
1763
1764
1765
1766
1767
1768
1769char *
1771{
1772 char *out;
1773
1775
1777 memcpy(out, in, len);
1778 out[len] = '\0';
1779
1780 return out;
1781}
1782
1783
1784
1785
1786char *
1788{
1789 size_t n;
1790
1791 n = strlen(in);
1792 while (n > 0 && in[n - 1] == '\n')
1793 n--;
1795}
MemoryContext AlignedAllocGetChunkContext(void *pointer)
void * AlignedAllocRealloc(void *pointer, Size size, int flags)
Size AlignedAllocGetChunkSpace(void *pointer)
void AlignedAllocFree(void *pointer)
void AllocSetReset(MemoryContext context)
void * AllocSetRealloc(void *pointer, Size size, int flags)
Size AllocSetGetChunkSpace(void *pointer)
MemoryContext AllocSetGetChunkContext(void *pointer)
void AllocSetStats(MemoryContext context, MemoryStatsPrintFunc printfunc, void *passthru, MemoryContextCounters *totals, bool print_to_stderr)
bool AllocSetIsEmpty(MemoryContext context)
void * AllocSetAlloc(MemoryContext context, Size size, int flags)
void AllocSetFree(void *pointer)
void AllocSetDelete(MemoryContext context)
void BumpFree(void *pointer)
void BumpDelete(MemoryContext context)
Size BumpGetChunkSpace(void *pointer)
void BumpStats(MemoryContext context, MemoryStatsPrintFunc printfunc, void *passthru, MemoryContextCounters *totals, bool print_to_stderr)
MemoryContext BumpGetChunkContext(void *pointer)
void BumpReset(MemoryContext context)
bool BumpIsEmpty(MemoryContext context)
void * BumpRealloc(void *pointer, Size size, int flags)
void * BumpAlloc(MemoryContext context, Size size, int flags)
#define TYPEALIGN(ALIGNVAL, LEN)
#define MemSetAligned(start, val, len)
#define fprintf(file, fmt, msg)
int errmsg_internal(const char *fmt,...)
int errhidestmt(bool hide_stmt)
int errdetail(const char *fmt,...)
int errhidecontext(bool hide_ctx)
int errcode(int sqlerrcode)
int errmsg(const char *fmt,...)
#define ereport(elevel,...)
#define MCXT_ALLOC_NO_OOM
void * GenerationRealloc(void *pointer, Size size, int flags)
void GenerationReset(MemoryContext context)
void GenerationFree(void *pointer)
MemoryContext GenerationGetChunkContext(void *pointer)
Size GenerationGetChunkSpace(void *pointer)
bool GenerationIsEmpty(MemoryContext context)
void GenerationStats(MemoryContext context, MemoryStatsPrintFunc printfunc, void *passthru, MemoryContextCounters *totals, bool print_to_stderr)
void GenerationDelete(MemoryContext context)
void * GenerationAlloc(MemoryContext context, Size size, int flags)
volatile sig_atomic_t LogMemoryContextPending
volatile sig_atomic_t InterruptPending
volatile uint32 CritSectionCount
Assert(PointerIsAligned(start, uint64))
int pg_mbcliplen(const char *mbstr, int len, int limit)
static void MemoryContextStatsInternal(MemoryContext context, int level, int max_level, int max_children, MemoryContextCounters *totals, bool print_to_stderr)
void MemoryContextUnregisterResetCallback(MemoryContext context, MemoryContextCallback *cb)
void * repalloc0(void *pointer, Size oldsize, Size size)
static void MemoryContextCallResetCallbacks(MemoryContext context)
char * MemoryContextStrdup(MemoryContext context, const char *string)
void * MemoryContextAlloc(MemoryContext context, Size size)
MemoryContext MessageContext
bool MemoryContextIsEmpty(MemoryContext context)
void MemoryContextMemConsumed(MemoryContext context, MemoryContextCounters *consumed)
void MemoryContextReset(MemoryContext context)
void MemoryContextCreate(MemoryContext node, NodeTag tag, MemoryContextMethodID method_id, MemoryContext parent, const char *name)
void * MemoryContextAllocZero(MemoryContext context, Size size)
MemoryContext TopTransactionContext
char * pstrdup(const char *in)
void HandleLogMemoryContextInterrupt(void)
void MemoryContextRegisterResetCallback(MemoryContext context, MemoryContextCallback *cb)
static MemoryContextMethodID GetMemoryChunkMethodID(const void *pointer)
void MemoryContextSetParent(MemoryContext context, MemoryContext new_parent)
static void * BogusRealloc(void *pointer, Size size, int flags)
void * repalloc(void *pointer, Size size)
void pfree(void *pointer)
Size GetMemoryChunkSpace(void *pointer)
void * palloc0(Size size)
static Size BogusGetChunkSpace(void *pointer)
void * MemoryContextAllocAligned(MemoryContext context, Size size, Size alignto, int flags)
void MemoryContextDeleteChildren(MemoryContext context)
MemoryContext TopMemoryContext
char * pchomp(const char *in)
#define AssertNotInCriticalSection(context)
MemoryContext CurTransactionContext
MemoryContext CurrentMemoryContext
static MemoryContext MemoryContextTraverseNext(MemoryContext curr, MemoryContext top)
MemoryContext GetMemoryChunkContext(void *pointer)
void * MemoryContextAllocExtended(MemoryContext context, Size size, int flags)
void MemoryContextStatsDetail(MemoryContext context, int max_level, int max_children, bool print_to_stderr)
Size MemoryContextMemAllocated(MemoryContext context, bool recurse)
char * pnstrdup(const char *in, Size len)
void MemoryContextStats(MemoryContext context)
void MemoryContextInit(void)
static void BogusFree(void *pointer)
void * palloc_extended(Size size, int flags)
MemoryContext PostmasterContext
void * MemoryContextAllocationFailure(MemoryContext context, Size size, int flags)
static const MemoryContextMethods mcxt_methods[]
void * repalloc_extended(void *pointer, Size size, int flags)
MemoryContext MemoryContextGetParent(MemoryContext context)
void ProcessLogMemoryContextInterrupt(void)
MemoryContext ErrorContext
static MemoryContext BogusGetChunkContext(void *pointer)
MemoryContext CacheMemoryContext
void MemoryContextSizeFailure(MemoryContext context, Size size, int flags)
void * MemoryContextAllocHuge(MemoryContext context, Size size)
void MemoryContextDelete(MemoryContext context)
void MemoryContextAllowInCriticalSection(MemoryContext context, bool allow)
static void MemoryContextDeleteOnly(MemoryContext context)
void MemoryContextResetChildren(MemoryContext context)
static void MemoryContextStatsPrint(MemoryContext context, void *passthru, const char *stats_string, bool print_to_stderr)
void * repalloc_huge(void *pointer, Size size)
void MemoryContextSetIdentifier(MemoryContext context, const char *id)
void MemoryContextResetOnly(MemoryContext context)
static uint64 GetMemoryChunkHeader(const void *pointer)
MemoryContext PortalContext
void * palloc_aligned(Size size, Size alignto, int flags)
#define MCXT_METHOD(pointer, method)
#define VALGRIND_MAKE_MEM_DEFINED(addr, size)
#define VALGRIND_MEMPOOL_CHANGE(context, optr, nptr, size)
#define VALGRIND_MEMPOOL_ALLOC(context, addr, size)
#define VALGRIND_MEMPOOL_FREE(context, addr)
#define VALGRIND_MAKE_MEM_NOACCESS(addr, size)
#define MemoryContextIsValid(context)
#define AllocSetContextCreate
#define ALLOCSET_DEFAULT_SIZES
#define AllocHugeSizeIsValid(size)
#define AllocSizeIsValid(size)
#define MEMORY_CONTEXT_METHODID_MASK
#define PallocAlignedExtraBytes(alignto)
@ MCTX_15_RESERVED_WIPEDMEM_ID
@ MCTX_1_RESERVED_GLIBC_ID
@ MCTX_0_RESERVED_UNUSEDMEM_ID
@ MCTX_2_RESERVED_GLIBC_ID
@ MCTX_ALIGNED_REDIRECT_ID
struct MemoryChunk MemoryChunk
#define PointerGetMemoryChunk(p)
static void MemoryChunkSetHdrMask(MemoryChunk *chunk, void *block, Size value, MemoryContextMethodID methodid)
size_t strnlen(const char *str, size_t maxlen)
void * SlabAlloc(MemoryContext context, Size size, int flags)
void SlabFree(void *pointer)
void SlabReset(MemoryContext context)
Size SlabGetChunkSpace(void *pointer)
bool SlabIsEmpty(MemoryContext context)
MemoryContext SlabGetChunkContext(void *pointer)
void * SlabRealloc(void *pointer, Size size, int flags)
void SlabStats(MemoryContext context, MemoryStatsPrintFunc printfunc, void *passthru, MemoryContextCounters *totals, bool print_to_stderr)
void SlabDelete(MemoryContext context)
bool stack_is_too_deep(void)
struct MemoryContextCallback * next
MemoryContextCallbackFunction func
MemoryContextCallback * reset_cbs
const MemoryContextMethods * methods
void(* delete_context)(MemoryContext context)
void(* stats)(MemoryContext context, MemoryStatsPrintFunc printfunc, void *passthru, MemoryContextCounters *totals, bool print_to_stderr)
bool(* is_empty)(MemoryContext context)
void *(* alloc)(MemoryContext context, Size size, int flags)
void(* reset)(MemoryContext context)