PostgreSQL Source Code  git master
xloginsert.h File Reference
#include "access/rmgr.h"
#include "access/xlogdefs.h"
#include "storage/block.h"
#include "storage/buf.h"
#include "storage/relfilenode.h"
#include "utils/relcache.h"
Include dependency graph for xloginsert.h:
This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Macros

#define XLR_NORMAL_MAX_BLOCK_ID   4
 
#define XLR_NORMAL_RDATAS   20
 
#define REGBUF_FORCE_IMAGE   0x01 /* force a full-page image */
 
#define REGBUF_NO_IMAGE   0x02 /* don't take a full-page image */
 
#define REGBUF_WILL_INIT
 
#define REGBUF_STANDARD
 
#define REGBUF_KEEP_DATA
 

Functions

void XLogBeginInsert (void)
 
void XLogSetRecordFlags (uint8 flags)
 
XLogRecPtr XLogInsert (RmgrId rmid, uint8 info)
 
void XLogEnsureRecordSpace (int max_block_id, int ndatas)
 
void XLogRegisterData (char *data, int len)
 
void XLogRegisterBuffer (uint8 block_id, Buffer buffer, uint8 flags)
 
void XLogRegisterBlock (uint8 block_id, RelFileNode *rnode, ForkNumber forknum, BlockNumber blknum, char *page, uint8 flags)
 
void XLogRegisterBufData (uint8 block_id, char *data, int len)
 
void XLogResetInsertion (void)
 
bool XLogCheckBufferNeedsBackup (Buffer buffer)
 
XLogRecPtr log_newpage (RelFileNode *rnode, ForkNumber forkNum, BlockNumber blk, char *page, bool page_std)
 
void log_newpages (RelFileNode *rnode, ForkNumber forkNum, int num_pages, BlockNumber *blknos, char **pages, bool page_std)
 
XLogRecPtr log_newpage_buffer (Buffer buffer, bool page_std)
 
void log_newpage_range (Relation rel, ForkNumber forkNum, BlockNumber startblk, BlockNumber endblk, bool page_std)
 
XLogRecPtr XLogSaveBufferForHint (Buffer buffer, bool buffer_std)
 
void InitXLogInsert (void)
 

Macro Definition Documentation

◆ REGBUF_FORCE_IMAGE

#define REGBUF_FORCE_IMAGE   0x01 /* force a full-page image */

◆ REGBUF_KEEP_DATA

#define REGBUF_KEEP_DATA
Value:
0x10 /* include data even if a full-page image
* is taken */

Definition at line 38 of file xloginsert.h.

Referenced by heap_insert(), heap_multi_insert(), log_heap_update(), and XLogRecordAssemble().

◆ REGBUF_NO_IMAGE

#define REGBUF_NO_IMAGE   0x02 /* don't take a full-page image */

◆ REGBUF_STANDARD

#define REGBUF_STANDARD

◆ REGBUF_WILL_INIT

◆ XLR_NORMAL_MAX_BLOCK_ID

#define XLR_NORMAL_MAX_BLOCK_ID   4

Definition at line 27 of file xloginsert.h.

Referenced by InitXLogInsert(), and XLogEnsureRecordSpace().

◆ XLR_NORMAL_RDATAS

#define XLR_NORMAL_RDATAS   20

Definition at line 28 of file xloginsert.h.

Referenced by InitXLogInsert(), and XLogEnsureRecordSpace().

Function Documentation

◆ InitXLogInsert()

void InitXLogInsert ( void  )

Definition at line 1251 of file xloginsert.c.

References ALLOCSET_DEFAULT_SIZES, AllocSetContextCreate, hdr_scratch, HEADER_SCRATCH_SIZE, max_rdatas, max_registered_buffers, MemoryContextAlloc(), MemoryContextAllocZero(), TopMemoryContext, XLR_NORMAL_MAX_BLOCK_ID, and XLR_NORMAL_RDATAS.

Referenced by CreateCheckPoint(), and InitXLOGAccess().

1252 {
1253  /* Initialize the working areas */
1254  if (xloginsert_cxt == NULL)
1255  {
1257  "WAL record construction",
1259  }
1260 
1261  if (registered_buffers == NULL)
1262  {
1265  sizeof(registered_buffer) * (XLR_NORMAL_MAX_BLOCK_ID + 1));
1267  }
1268  if (rdatas == NULL)
1269  {
1271  sizeof(XLogRecData) * XLR_NORMAL_RDATAS);
1273  }
1274 
1275  /*
1276  * Allocate a buffer to hold the header information for a WAL record.
1277  */
1278  if (hdr_scratch == NULL)
1281 }
#define AllocSetContextCreate
Definition: memutils.h:173
#define HEADER_SCRATCH_SIZE
Definition: xloginsert.c:106
#define XLR_NORMAL_RDATAS
Definition: xloginsert.h:28
static int max_registered_buffers
Definition: xloginsert.c:77
#define ALLOCSET_DEFAULT_SIZES
Definition: memutils.h:195
static int max_rdatas
Definition: xloginsert.c:117
MemoryContext TopMemoryContext
Definition: mcxt.c:48
static registered_buffer * registered_buffers
Definition: xloginsert.c:76
void * MemoryContextAllocZero(MemoryContext context, Size size)
Definition: mcxt.c:906
#define XLR_NORMAL_MAX_BLOCK_ID
Definition: xloginsert.h:27
static char * hdr_scratch
Definition: xloginsert.c:101
void * MemoryContextAlloc(MemoryContext context, Size size)
Definition: mcxt.c:863
static MemoryContext xloginsert_cxt
Definition: xloginsert.c:122
static XLogRecData * rdatas
Definition: xloginsert.c:115

◆ log_newpage()

XLogRecPtr log_newpage ( RelFileNode rnode,
ForkNumber  forkNum,
BlockNumber  blk,
char *  page,
bool  page_std 
)

Definition at line 1050 of file xloginsert.c.

References PageIsNew, PageSetLSN, REGBUF_FORCE_IMAGE, REGBUF_STANDARD, XLOG_FPI, XLogBeginInsert(), XLogInsert(), and XLogRegisterBlock().

Referenced by _bt_blwritepage(), _hash_alloc_buckets(), _hash_init(), blbuildempty(), btbuildempty(), end_heap_rewrite(), gist_indexsortbuild(), log_newpage_buffer(), raw_heap_insert(), RelationCopyStorage(), and spgbuildempty().

1052 {
1053  int flags;
1054  XLogRecPtr recptr;
1055 
1056  flags = REGBUF_FORCE_IMAGE;
1057  if (page_std)
1058  flags |= REGBUF_STANDARD;
1059 
1060  XLogBeginInsert();
1061  XLogRegisterBlock(0, rnode, forkNum, blkno, page, flags);
1062  recptr = XLogInsert(RM_XLOG_ID, XLOG_FPI);
1063 
1064  /*
1065  * The page may be uninitialized. If so, we can't set the LSN because that
1066  * would corrupt the page.
1067  */
1068  if (!PageIsNew(page))
1069  {
1070  PageSetLSN(page, recptr);
1071  }
1072 
1073  return recptr;
1074 }
void XLogRegisterBlock(uint8 block_id, RelFileNode *rnode, ForkNumber forknum, BlockNumber blknum, Page page, uint8 flags)
Definition: xloginsert.c:285
#define REGBUF_STANDARD
Definition: xloginsert.h:35
#define REGBUF_FORCE_IMAGE
Definition: xloginsert.h:31
XLogRecPtr XLogInsert(RmgrId rmid, uint8 info)
Definition: xloginsert.c:434
uint64 XLogRecPtr
Definition: xlogdefs.h:21
#define XLOG_FPI
Definition: pg_control.h:78
#define PageIsNew(page)
Definition: bufpage.h:229
void XLogBeginInsert(void)
Definition: xloginsert.c:135
#define PageSetLSN(page, lsn)
Definition: bufpage.h:368

◆ log_newpage_buffer()

XLogRecPtr log_newpage_buffer ( Buffer  buffer,
bool  page_std 
)

Definition at line 1144 of file xloginsert.c.

References Assert, BufferGetPage, BufferGetTag(), CritSectionCount, and log_newpage().

Referenced by brin_initialize_empty_new_buffer(), brinbuildempty(), FreeSpaceMapPrepareTruncateRel(), ginbuildempty(), gistbuildempty(), heap_force_common(), lazy_scan_heap(), and visibilitymap_prepare_truncate().

1145 {
1146  Page page = BufferGetPage(buffer);
1147  RelFileNode rnode;
1148  ForkNumber forkNum;
1149  BlockNumber blkno;
1150 
1151  /* Shared buffers should be modified in a critical section. */
1152  Assert(CritSectionCount > 0);
1153 
1154  BufferGetTag(buffer, &rnode, &forkNum, &blkno);
1155 
1156  return log_newpage(&rnode, forkNum, blkno, page, page_std);
1157 }
uint32 BlockNumber
Definition: block.h:31
volatile uint32 CritSectionCount
Definition: globals.c:41
#define BufferGetPage(buffer)
Definition: bufmgr.h:169
ForkNumber
Definition: relpath.h:40
#define Assert(condition)
Definition: c.h:804
XLogRecPtr log_newpage(RelFileNode *rnode, ForkNumber forkNum, BlockNumber blkno, Page page, bool page_std)
Definition: xloginsert.c:1050
void BufferGetTag(Buffer buffer, RelFileNode *rnode, ForkNumber *forknum, BlockNumber *blknum)
Definition: bufmgr.c:2769
Pointer Page
Definition: bufpage.h:78

◆ log_newpage_range()

void log_newpage_range ( Relation  rel,
ForkNumber  forkNum,
BlockNumber  startblk,
BlockNumber  endblk,
bool  page_std 
)

Definition at line 1177 of file xloginsert.c.

References buf, BUFFER_LOCK_EXCLUSIVE, BufferGetPage, CHECK_FOR_INTERRUPTS, END_CRIT_SECTION, i, LockBuffer(), MarkBufferDirty(), PageIsNew, PageSetLSN, RBM_NORMAL, ReadBufferExtended(), REGBUF_FORCE_IMAGE, REGBUF_STANDARD, START_CRIT_SECTION, UnlockReleaseBuffer(), XLOG_FPI, XLogBeginInsert(), XLogEnsureRecordSpace(), XLogInsert(), XLogRegisterBuffer(), and XLR_MAX_BLOCK_ID.

Referenced by ginbuild(), gistbuild(), smgrDoPendingSyncs(), and spgbuild().

1180 {
1181  int flags;
1182  BlockNumber blkno;
1183 
1184  flags = REGBUF_FORCE_IMAGE;
1185  if (page_std)
1186  flags |= REGBUF_STANDARD;
1187 
1188  /*
1189  * Iterate over all the pages in the range. They are collected into
1190  * batches of XLR_MAX_BLOCK_ID pages, and a single WAL-record is written
1191  * for each batch.
1192  */
1194 
1195  blkno = startblk;
1196  while (blkno < endblk)
1197  {
1198  Buffer bufpack[XLR_MAX_BLOCK_ID];
1199  XLogRecPtr recptr;
1200  int nbufs;
1201  int i;
1202 
1204 
1205  /* Collect a batch of blocks. */
1206  nbufs = 0;
1207  while (nbufs < XLR_MAX_BLOCK_ID && blkno < endblk)
1208  {
1209  Buffer buf = ReadBufferExtended(rel, forkNum, blkno,
1210  RBM_NORMAL, NULL);
1211 
1213 
1214  /*
1215  * Completely empty pages are not WAL-logged. Writing a WAL record
1216  * would change the LSN, and we don't want that. We want the page
1217  * to stay empty.
1218  */
1219  if (!PageIsNew(BufferGetPage(buf)))
1220  bufpack[nbufs++] = buf;
1221  else
1222  UnlockReleaseBuffer(buf);
1223  blkno++;
1224  }
1225 
1226  /* Write WAL record for this batch. */
1227  XLogBeginInsert();
1228 
1230  for (i = 0; i < nbufs; i++)
1231  {
1232  XLogRegisterBuffer(i, bufpack[i], flags);
1233  MarkBufferDirty(bufpack[i]);
1234  }
1235 
1236  recptr = XLogInsert(RM_XLOG_ID, XLOG_FPI);
1237 
1238  for (i = 0; i < nbufs; i++)
1239  {
1240  PageSetLSN(BufferGetPage(bufpack[i]), recptr);
1241  UnlockReleaseBuffer(bufpack[i]);
1242  }
1243  END_CRIT_SECTION();
1244  }
1245 }
void MarkBufferDirty(Buffer buffer)
Definition: bufmgr.c:1565
void XLogRegisterBuffer(uint8 block_id, Buffer buffer, uint8 flags)
Definition: xloginsert.c:232
Buffer ReadBufferExtended(Relation reln, ForkNumber forkNum, BlockNumber blockNum, ReadBufferMode mode, BufferAccessStrategy strategy)
Definition: bufmgr.c:741
#define END_CRIT_SECTION()
Definition: miscadmin.h:149
#define START_CRIT_SECTION()
Definition: miscadmin.h:147
uint32 BlockNumber
Definition: block.h:31
#define BUFFER_LOCK_EXCLUSIVE
Definition: bufmgr.h:98
void UnlockReleaseBuffer(Buffer buffer)
Definition: bufmgr.c:3791
static char * buf
Definition: pg_test_fsync.c:68
#define REGBUF_STANDARD
Definition: xloginsert.h:35
#define BufferGetPage(buffer)
Definition: bufmgr.h:169
#define XLR_MAX_BLOCK_ID
Definition: xlogrecord.h:226
#define REGBUF_FORCE_IMAGE
Definition: xloginsert.h:31
XLogRecPtr XLogInsert(RmgrId rmid, uint8 info)
Definition: xloginsert.c:434
void LockBuffer(Buffer buffer, int mode)
Definition: bufmgr.c:4007
uint64 XLogRecPtr
Definition: xlogdefs.h:21
void XLogEnsureRecordSpace(int max_block_id, int ndatas)
Definition: xloginsert.c:161
#define XLOG_FPI
Definition: pg_control.h:78
#define PageIsNew(page)
Definition: bufpage.h:229
int i
#define CHECK_FOR_INTERRUPTS()
Definition: miscadmin.h:120
void XLogBeginInsert(void)
Definition: xloginsert.c:135
#define PageSetLSN(page, lsn)
Definition: bufpage.h:368
int Buffer
Definition: buf.h:23

◆ log_newpages()

void log_newpages ( RelFileNode rnode,
ForkNumber  forkNum,
int  num_pages,
BlockNumber blknos,
char **  pages,
bool  page_std 
)

Definition at line 1082 of file xloginsert.c.

References i, PageIsNew, PageSetLSN, REGBUF_FORCE_IMAGE, REGBUF_STANDARD, XLOG_FPI, XLogBeginInsert(), XLogEnsureRecordSpace(), XLogInsert(), XLogRegisterBlock(), and XLR_MAX_BLOCK_ID.

Referenced by gist_indexsortbuild_flush_ready_pages().

1084 {
1085  int flags;
1086  XLogRecPtr recptr;
1087  int i;
1088  int j;
1089 
1090  flags = REGBUF_FORCE_IMAGE;
1091  if (page_std)
1092  flags |= REGBUF_STANDARD;
1093 
1094  /*
1095  * Iterate over all the pages. They are collected into batches of
1096  * XLR_MAX_BLOCK_ID pages, and a single WAL-record is written for each
1097  * batch.
1098  */
1100 
1101  i = 0;
1102  while (i < num_pages)
1103  {
1104  int batch_start = i;
1105  int nbatch;
1106 
1107  XLogBeginInsert();
1108 
1109  nbatch = 0;
1110  while (nbatch < XLR_MAX_BLOCK_ID && i < num_pages)
1111  {
1112  XLogRegisterBlock(nbatch, rnode, forkNum, blknos[i], pages[i], flags);
1113  i++;
1114  nbatch++;
1115  }
1116 
1117  recptr = XLogInsert(RM_XLOG_ID, XLOG_FPI);
1118 
1119  for (j = batch_start; j < i; j++)
1120  {
1121  /*
1122  * The page may be uninitialized. If so, we can't set the LSN
1123  * because that would corrupt the page.
1124  */
1125  if (!PageIsNew(pages[j]))
1126  {
1127  PageSetLSN(pages[j], recptr);
1128  }
1129  }
1130  }
1131 }
void XLogRegisterBlock(uint8 block_id, RelFileNode *rnode, ForkNumber forknum, BlockNumber blknum, Page page, uint8 flags)
Definition: xloginsert.c:285
#define REGBUF_STANDARD
Definition: xloginsert.h:35
#define XLR_MAX_BLOCK_ID
Definition: xlogrecord.h:226
#define REGBUF_FORCE_IMAGE
Definition: xloginsert.h:31
XLogRecPtr XLogInsert(RmgrId rmid, uint8 info)
Definition: xloginsert.c:434
uint64 XLogRecPtr
Definition: xlogdefs.h:21
void XLogEnsureRecordSpace(int max_block_id, int ndatas)
Definition: xloginsert.c:161
#define XLOG_FPI
Definition: pg_control.h:78
#define PageIsNew(page)
Definition: bufpage.h:229
int i
void XLogBeginInsert(void)
Definition: xloginsert.c:135
#define PageSetLSN(page, lsn)
Definition: bufpage.h:368

◆ XLogBeginInsert()

void XLogBeginInsert ( void  )

Definition at line 135 of file xloginsert.c.

References Assert, begininsert_called, elog, ERROR, mainrdata_len, max_registered_block_id, and XLogInsertAllowed().

Referenced by _bt_dedup_pass(), _bt_delitems_delete(), _bt_delitems_vacuum(), _bt_getroot(), _bt_insertonpg(), _bt_log_reuse_page(), _bt_mark_page_halfdead(), _bt_newroot(), _bt_set_cleanup_info(), _bt_split(), _bt_unlink_halfdead_page(), _hash_addovflpage(), _hash_doinsert(), _hash_expandtable(), _hash_freeovflpage(), _hash_init(), _hash_splitbucket(), _hash_squeezebucket(), _hash_vacuum_one_page(), addLeafTuple(), AssignTransactionId(), brin_doinsert(), brin_doupdate(), brinbuild(), brinRevmapDesummarizeRange(), CreateCheckPoint(), createdb(), CreateEndOfRecoveryRecord(), CreateOverwriteContrecordRecord(), createPostingTree(), CreateTableSpace(), do_pg_stop_backup(), do_setval(), doPickSplit(), DropTableSpace(), EndPrepare(), ExecuteTruncateGuts(), fill_seq_with_data(), GenericXLogFinish(), ginDeletePage(), ginHeapTupleFastInsert(), ginPlaceToPage(), ginUpdateStats(), ginVacuumPostingTreeLeaf(), gistXLogAssignLSN(), gistXLogDelete(), gistXLogPageDelete(), gistXLogPageReuse(), gistXLogSplit(), gistXLogUpdate(), hashbucketcleanup(), hashbulkdelete(), heap_abort_speculative(), heap_delete(), heap_finish_speculative(), heap_inplace_update(), heap_insert(), heap_lock_tuple(), heap_lock_updated_tuple_rec(), heap_multi_insert(), heap_page_prune(), heap_update(), lazy_vacuum_heap_page(), log_heap_freeze(), log_heap_new_cid(), log_heap_update(), log_heap_visible(), log_newpage(), log_newpage_range(), log_newpages(), log_smgrcreate(), log_split_page(), LogAccessExclusiveLocks(), LogCurrentRunningXacts(), logical_heap_rewrite_flush_mappings(), LogLogicalInvalidations(), LogLogicalMessage(), LogStandbyInvalidations(), movedb(), moveLeafs(), MultiXactIdCreateFromMembers(), nextval_internal(), pg_truncate_visibility_map(), RelationTruncate(), remove_dbtablespaces(), replorigin_advance(), replorigin_drop_guts(), RequestXLogSwitch(), revmap_physical_extend(), shiftList(), spgAddNodeAction(), spgSplitNodeAction(), UpdateFullPageWrites(), vacuumLeafPage(), vacuumLeafRoot(), vacuumRedirectAndPlaceholder(), write_relmap_file(), writeListPage(), WriteMTruncateXlogRec(), WriteMZeroPageXlogRec(), WriteTruncateXlogRec(), WriteZeroPageXlogRec(), XactLogAbortRecord(), XactLogCommitRecord(), XLogPutNextOid(), XLogReportParameters(), XLogRestorePoint(), XLogSaveBufferForHint(), and xlogVacuumPage().

136 {
139  Assert(mainrdata_len == 0);
140 
141  /* cross-check on whether we should be here or not */
142  if (!XLogInsertAllowed())
143  elog(ERROR, "cannot make new WAL entries during recovery");
144 
145  if (begininsert_called)
146  elog(ERROR, "XLogBeginInsert was already called");
147 
148  begininsert_called = true;
149 }
static uint32 mainrdata_len
Definition: xloginsert.c:87
static bool begininsert_called
Definition: xloginsert.c:119
#define ERROR
Definition: elog.h:46
static XLogRecData * mainrdata_head
Definition: xloginsert.c:85
bool XLogInsertAllowed(void)
Definition: xlog.c:8454
static XLogRecData * mainrdata_last
Definition: xloginsert.c:86
#define Assert(condition)
Definition: c.h:804
static int max_registered_block_id
Definition: xloginsert.c:78
#define elog(elevel,...)
Definition: elog.h:232

◆ XLogCheckBufferNeedsBackup()

bool XLogCheckBufferNeedsBackup ( Buffer  buffer)

Definition at line 934 of file xloginsert.c.

References BufferGetPage, doPageWrites, GetFullPageWriteInfo(), PageGetLSN, and RedoRecPtr.

Referenced by log_heap_update().

935 {
937  bool doPageWrites;
938  Page page;
939 
940  GetFullPageWriteInfo(&RedoRecPtr, &doPageWrites);
941 
942  page = BufferGetPage(buffer);
943 
944  if (doPageWrites && PageGetLSN(page) <= RedoRecPtr)
945  return true; /* buffer requires backup */
946 
947  return false; /* buffer does not need to be backed up */
948 }
static bool doPageWrites
Definition: xlog.c:374
static XLogRecPtr RedoRecPtr
Definition: xlog.c:367
#define BufferGetPage(buffer)
Definition: bufmgr.h:169
uint64 XLogRecPtr
Definition: xlogdefs.h:21
#define PageGetLSN(page)
Definition: bufpage.h:366
void GetFullPageWriteInfo(XLogRecPtr *RedoRecPtr_p, bool *doPageWrites_p)
Definition: xlog.c:8667
Pointer Page
Definition: bufpage.h:78

◆ XLogEnsureRecordSpace()

void XLogEnsureRecordSpace ( int  max_block_id,
int  ndatas 
)

Definition at line 161 of file xloginsert.c.

References Assert, CritSectionCount, elog, ERROR, max_rdatas, max_registered_buffers, MemSet, repalloc(), XLR_MAX_BLOCK_ID, XLR_NORMAL_MAX_BLOCK_ID, and XLR_NORMAL_RDATAS.

Referenced by _hash_freeovflpage(), _hash_squeezebucket(), EndPrepare(), gistplacetopage(), log_newpage_range(), log_newpages(), and shiftList().

162 {
163  int nbuffers;
164 
165  /*
166  * This must be called before entering a critical section, because
167  * allocating memory inside a critical section can fail. repalloc() will
168  * check the same, but better to check it here too so that we fail
169  * consistently even if the arrays happen to be large enough already.
170  */
171  Assert(CritSectionCount == 0);
172 
173  /* the minimum values can't be decreased */
174  if (max_block_id < XLR_NORMAL_MAX_BLOCK_ID)
175  max_block_id = XLR_NORMAL_MAX_BLOCK_ID;
176  if (ndatas < XLR_NORMAL_RDATAS)
177  ndatas = XLR_NORMAL_RDATAS;
178 
179  if (max_block_id > XLR_MAX_BLOCK_ID)
180  elog(ERROR, "maximum number of WAL record block references exceeded");
181  nbuffers = max_block_id + 1;
182 
183  if (nbuffers > max_registered_buffers)
184  {
186  repalloc(registered_buffers, sizeof(registered_buffer) * nbuffers);
187 
188  /*
189  * At least the padding bytes in the structs must be zeroed, because
190  * they are included in WAL data, but initialize it all for tidiness.
191  */
193  (nbuffers - max_registered_buffers) * sizeof(registered_buffer));
194  max_registered_buffers = nbuffers;
195  }
196 
197  if (ndatas > max_rdatas)
198  {
199  rdatas = (XLogRecData *) repalloc(rdatas, sizeof(XLogRecData) * ndatas);
200  max_rdatas = ndatas;
201  }
202 }
#define XLR_NORMAL_RDATAS
Definition: xloginsert.h:28
#define MemSet(start, val, len)
Definition: c.h:1008
#define ERROR
Definition: elog.h:46
static int max_registered_buffers
Definition: xloginsert.c:77
volatile uint32 CritSectionCount
Definition: globals.c:41
static int max_rdatas
Definition: xloginsert.c:117
#define XLR_MAX_BLOCK_ID
Definition: xlogrecord.h:226
static registered_buffer * registered_buffers
Definition: xloginsert.c:76
#define XLR_NORMAL_MAX_BLOCK_ID
Definition: xloginsert.h:27
#define Assert(condition)
Definition: c.h:804
void * repalloc(void *pointer, Size size)
Definition: mcxt.c:1182
#define elog(elevel,...)
Definition: elog.h:232
static XLogRecData * rdatas
Definition: xloginsert.c:115

◆ XLogInsert()

XLogRecPtr XLogInsert ( RmgrId  rmid,
uint8  info 
)

Definition at line 434 of file xloginsert.c.

References begininsert_called, curinsert_flags, doPageWrites, elog, ERROR, GetFullPageWriteInfo(), InvalidXLogRecPtr, IsBootstrapProcessingMode, PANIC, RedoRecPtr, SizeOfXLogLongPHD, XLogInsertRecord(), XLogRecordAssemble(), XLogResetInsertion(), XLR_CHECK_CONSISTENCY, XLR_RMGR_INFO_MASK, and XLR_SPECIAL_REL_UPDATE.

Referenced by _bt_dedup_pass(), _bt_delitems_delete(), _bt_delitems_vacuum(), _bt_getroot(), _bt_insertonpg(), _bt_log_reuse_page(), _bt_mark_page_halfdead(), _bt_newroot(), _bt_set_cleanup_info(), _bt_split(), _bt_unlink_halfdead_page(), _hash_addovflpage(), _hash_doinsert(), _hash_expandtable(), _hash_freeovflpage(), _hash_init(), _hash_splitbucket(), _hash_squeezebucket(), _hash_vacuum_one_page(), addLeafTuple(), AssignTransactionId(), brin_doinsert(), brin_doupdate(), brinbuild(), brinRevmapDesummarizeRange(), CreateCheckPoint(), createdb(), CreateEndOfRecoveryRecord(), CreateOverwriteContrecordRecord(), createPostingTree(), CreateTableSpace(), do_pg_stop_backup(), do_setval(), doPickSplit(), DropTableSpace(), EndPrepare(), ExecuteTruncateGuts(), fill_seq_with_data(), GenericXLogFinish(), ginDeletePage(), ginHeapTupleFastInsert(), ginPlaceToPage(), ginUpdateStats(), ginVacuumPostingTreeLeaf(), gistXLogAssignLSN(), gistXLogDelete(), gistXLogPageDelete(), gistXLogPageReuse(), gistXLogSplit(), gistXLogUpdate(), hashbucketcleanup(), hashbulkdelete(), heap_abort_speculative(), heap_delete(), heap_finish_speculative(), heap_inplace_update(), heap_insert(), heap_lock_tuple(), heap_lock_updated_tuple_rec(), heap_multi_insert(), heap_page_prune(), heap_update(), lazy_vacuum_heap_page(), log_heap_freeze(), log_heap_new_cid(), log_heap_update(), log_heap_visible(), log_newpage(), log_newpage_range(), log_newpages(), log_smgrcreate(), log_split_page(), LogAccessExclusiveLocks(), LogCurrentRunningXacts(), logical_heap_rewrite_flush_mappings(), LogLogicalInvalidations(), LogLogicalMessage(), LogStandbyInvalidations(), movedb(), moveLeafs(), MultiXactIdCreateFromMembers(), nextval_internal(), pg_truncate_visibility_map(), RelationTruncate(), remove_dbtablespaces(), replorigin_advance(), replorigin_drop_guts(), RequestXLogSwitch(), revmap_physical_extend(), shiftList(), spgAddNodeAction(), spgSplitNodeAction(), UpdateFullPageWrites(), vacuumLeafPage(), vacuumLeafRoot(), vacuumRedirectAndPlaceholder(), write_relmap_file(), writeListPage(), WriteMTruncateXlogRec(), WriteMZeroPageXlogRec(), WriteTruncateXlogRec(), WriteZeroPageXlogRec(), XactLogAbortRecord(), XactLogCommitRecord(), XLogPutNextOid(), XLogReportParameters(), XLogRestorePoint(), XLogSaveBufferForHint(), and xlogVacuumPage().

435 {
436  XLogRecPtr EndPos;
437 
438  /* XLogBeginInsert() must have been called. */
439  if (!begininsert_called)
440  elog(ERROR, "XLogBeginInsert was not called");
441 
442  /*
443  * The caller can set rmgr bits, XLR_SPECIAL_REL_UPDATE and
444  * XLR_CHECK_CONSISTENCY; the rest are reserved for use by me.
445  */
446  if ((info & ~(XLR_RMGR_INFO_MASK |
448  XLR_CHECK_CONSISTENCY)) != 0)
449  elog(PANIC, "invalid xlog info mask %02X", info);
450 
451  TRACE_POSTGRESQL_WAL_INSERT(rmid, info);
452 
453  /*
454  * In bootstrap mode, we don't actually log anything but XLOG resources;
455  * return a phony record pointer.
456  */
457  if (IsBootstrapProcessingMode() && rmid != RM_XLOG_ID)
458  {
460  EndPos = SizeOfXLogLongPHD; /* start of 1st chkpt record */
461  return EndPos;
462  }
463 
464  do
465  {
467  bool doPageWrites;
468  XLogRecPtr fpw_lsn;
469  XLogRecData *rdt;
470  int num_fpi = 0;
471 
472  /*
473  * Get values needed to decide whether to do full-page writes. Since
474  * we don't yet have an insertion lock, these could change under us,
475  * but XLogInsertRecord will recheck them once it has a lock.
476  */
477  GetFullPageWriteInfo(&RedoRecPtr, &doPageWrites);
478 
479  rdt = XLogRecordAssemble(rmid, info, RedoRecPtr, doPageWrites,
480  &fpw_lsn, &num_fpi);
481 
482  EndPos = XLogInsertRecord(rdt, fpw_lsn, curinsert_flags, num_fpi);
483  } while (EndPos == InvalidXLogRecPtr);
484 
486 
487  return EndPos;
488 }
#define InvalidXLogRecPtr
Definition: xlogdefs.h:28
#define XLR_SPECIAL_REL_UPDATE
Definition: xlogrecord.h:71
static bool begininsert_called
Definition: xloginsert.c:119
#define PANIC
Definition: elog.h:50
#define XLR_CHECK_CONSISTENCY
Definition: xlogrecord.h:80
static bool doPageWrites
Definition: xlog.c:374
#define ERROR
Definition: elog.h:46
void XLogResetInsertion(void)
Definition: xloginsert.c:208
static XLogRecData * XLogRecordAssemble(RmgrId rmid, uint8 info, XLogRecPtr RedoRecPtr, bool doPageWrites, XLogRecPtr *fpw_lsn, int *num_fpi)
Definition: xloginsert.c:503
static XLogRecPtr RedoRecPtr
Definition: xlog.c:367
uint64 XLogRecPtr
Definition: xlogdefs.h:21
#define IsBootstrapProcessingMode()
Definition: miscadmin.h:406
void GetFullPageWriteInfo(XLogRecPtr *RedoRecPtr_p, bool *doPageWrites_p)
Definition: xlog.c:8667
#define elog(elevel,...)
Definition: elog.h:232
XLogRecPtr XLogInsertRecord(XLogRecData *rdata, XLogRecPtr fpw_lsn, uint8 flags, int num_fpi)
Definition: xlog.c:1014
static uint8 curinsert_flags
Definition: xloginsert.c:90
#define SizeOfXLogLongPHD
Definition: xlog_internal.h:69
#define XLR_RMGR_INFO_MASK
Definition: xlogrecord.h:63

◆ XLogRegisterBlock()

void XLogRegisterBlock ( uint8  block_id,
RelFileNode rnode,
ForkNumber  forknum,
BlockNumber  blknum,
char *  page,
uint8  flags 
)

Definition at line 285 of file xloginsert.c.

References Assert, begininsert_called, registered_buffer::block, elog, ERROR, registered_buffer::flags, registered_buffer::forkno, i, registered_buffer::in_use, max_registered_block_id, max_registered_buffers, registered_buffer::page, registered_buffer::rdata_head, registered_buffer::rdata_len, registered_buffer::rdata_tail, RelFileNodeEquals, and registered_buffer::rnode.

Referenced by log_newpage(), log_newpages(), and XLogSaveBufferForHint().

287 {
288  registered_buffer *regbuf;
289 
291 
292  if (block_id >= max_registered_block_id)
293  max_registered_block_id = block_id + 1;
294 
295  if (block_id >= max_registered_buffers)
296  elog(ERROR, "too many registered buffers");
297 
298  regbuf = &registered_buffers[block_id];
299 
300  regbuf->rnode = *rnode;
301  regbuf->forkno = forknum;
302  regbuf->block = blknum;
303  regbuf->page = page;
304  regbuf->flags = flags;
305  regbuf->rdata_tail = (XLogRecData *) &regbuf->rdata_head;
306  regbuf->rdata_len = 0;
307 
308  /*
309  * Check that this page hasn't already been registered with some other
310  * block_id.
311  */
312 #ifdef USE_ASSERT_CHECKING
313  {
314  int i;
315 
316  for (i = 0; i < max_registered_block_id; i++)
317  {
318  registered_buffer *regbuf_old = &registered_buffers[i];
319 
320  if (i == block_id || !regbuf_old->in_use)
321  continue;
322 
323  Assert(!RelFileNodeEquals(regbuf_old->rnode, regbuf->rnode) ||
324  regbuf_old->forkno != regbuf->forkno ||
325  regbuf_old->block != regbuf->block);
326  }
327  }
328 #endif
329 
330  regbuf->in_use = true;
331 }
BlockNumber block
Definition: xloginsert.c:61
static bool begininsert_called
Definition: xloginsert.c:119
XLogRecData * rdata_head
Definition: xloginsert.c:64
RelFileNode rnode
Definition: xloginsert.c:59
#define ERROR
Definition: elog.h:46
static int max_registered_buffers
Definition: xloginsert.c:77
XLogRecData * rdata_tail
Definition: xloginsert.c:66
static registered_buffer * registered_buffers
Definition: xloginsert.c:76
#define Assert(condition)
Definition: c.h:804
ForkNumber forkno
Definition: xloginsert.c:60
static int max_registered_block_id
Definition: xloginsert.c:78
#define elog(elevel,...)
Definition: elog.h:232
int i
#define RelFileNodeEquals(node1, node2)
Definition: relfilenode.h:88

◆ XLogRegisterBufData()

void XLogRegisterBufData ( uint8  block_id,
char *  data,
int  len 
)

Definition at line 378 of file xloginsert.c.

References Assert, begininsert_called, XLogRecData::data, elog, ERROR, registered_buffer::in_use, XLogRecData::len, max_rdatas, XLogRecData::next, num_rdatas, registered_buffer::rdata_len, and registered_buffer::rdata_tail.

Referenced by _bt_dedup_pass(), _bt_delitems_delete(), _bt_delitems_vacuum(), _bt_getroot(), _bt_insertonpg(), _bt_newroot(), _bt_set_cleanup_info(), _bt_split(), _bt_unlink_halfdead_page(), _hash_addovflpage(), _hash_doinsert(), _hash_expandtable(), _hash_freeovflpage(), _hash_squeezebucket(), brin_doinsert(), brin_doupdate(), dataExecPlaceToPageInternal(), dataExecPlaceToPageLeaf(), entryExecPlaceToPage(), GenericXLogFinish(), ginHeapTupleFastInsert(), ginVacuumPostingTreeLeaf(), gistXLogSplit(), gistXLogUpdate(), hashbucketcleanup(), heap_inplace_update(), heap_insert(), heap_multi_insert(), heap_page_prune(), lazy_vacuum_heap_page(), log_heap_freeze(), log_heap_update(), and writeListPage().

379 {
380  registered_buffer *regbuf;
381  XLogRecData *rdata;
382 
384 
385  /* find the registered buffer struct */
386  regbuf = &registered_buffers[block_id];
387  if (!regbuf->in_use)
388  elog(ERROR, "no block with id %d registered with WAL insertion",
389  block_id);
390 
391  if (num_rdatas >= max_rdatas)
392  elog(ERROR, "too much WAL data");
393  rdata = &rdatas[num_rdatas++];
394 
395  rdata->data = data;
396  rdata->len = len;
397 
398  regbuf->rdata_tail->next = rdata;
399  regbuf->rdata_tail = rdata;
400  regbuf->rdata_len += len;
401 }
static bool begininsert_called
Definition: xloginsert.c:119
#define ERROR
Definition: elog.h:46
XLogRecData * rdata_tail
Definition: xloginsert.c:66
static int max_rdatas
Definition: xloginsert.c:117
static registered_buffer * registered_buffers
Definition: xloginsert.c:76
static int num_rdatas
Definition: xloginsert.c:116
#define Assert(condition)
Definition: c.h:804
struct XLogRecData * next
#define elog(elevel,...)
Definition: elog.h:232
static XLogRecData * rdatas
Definition: xloginsert.c:115

◆ XLogRegisterBuffer()

void XLogRegisterBuffer ( uint8  block_id,
Buffer  buffer,
uint8  flags 
)

Definition at line 232 of file xloginsert.c.

References Assert, begininsert_called, registered_buffer::block, BufferGetPage, BufferGetTag(), elog, ERROR, registered_buffer::flags, registered_buffer::forkno, i, registered_buffer::in_use, max_registered_block_id, max_registered_buffers, registered_buffer::page, registered_buffer::rdata_head, registered_buffer::rdata_len, registered_buffer::rdata_tail, REGBUF_FORCE_IMAGE, REGBUF_NO_IMAGE, RelFileNodeEquals, and registered_buffer::rnode.

Referenced by _bt_dedup_pass(), _bt_delitems_delete(), _bt_delitems_vacuum(), _bt_getroot(), _bt_insertonpg(), _bt_mark_page_halfdead(), _bt_newroot(), _bt_set_cleanup_info(), _bt_split(), _bt_unlink_halfdead_page(), _hash_addovflpage(), _hash_doinsert(), _hash_expandtable(), _hash_freeovflpage(), _hash_init(), _hash_splitbucket(), _hash_squeezebucket(), _hash_vacuum_one_page(), addLeafTuple(), brin_doinsert(), brin_doupdate(), brinbuild(), brinRevmapDesummarizeRange(), createPostingTree(), do_setval(), doPickSplit(), fill_seq_with_data(), GenericXLogFinish(), ginDeletePage(), ginHeapTupleFastInsert(), ginPlaceToPage(), ginUpdateStats(), ginVacuumPostingTreeLeaf(), gistXLogDelete(), gistXLogPageDelete(), gistXLogSplit(), gistXLogUpdate(), hashbucketcleanup(), hashbulkdelete(), heap_abort_speculative(), heap_delete(), heap_finish_speculative(), heap_inplace_update(), heap_insert(), heap_lock_tuple(), heap_lock_updated_tuple_rec(), heap_multi_insert(), heap_page_prune(), heap_update(), lazy_vacuum_heap_page(), log_heap_freeze(), log_heap_update(), log_heap_visible(), log_newpage_range(), log_split_page(), moveLeafs(), nextval_internal(), revmap_physical_extend(), shiftList(), spgAddNodeAction(), spgSplitNodeAction(), vacuumLeafPage(), vacuumLeafRoot(), vacuumRedirectAndPlaceholder(), writeListPage(), and xlogVacuumPage().

233 {
234  registered_buffer *regbuf;
235 
236  /* NO_IMAGE doesn't make sense with FORCE_IMAGE */
237  Assert(!((flags & REGBUF_FORCE_IMAGE) && (flags & (REGBUF_NO_IMAGE))));
239 
240  if (block_id >= max_registered_block_id)
241  {
242  if (block_id >= max_registered_buffers)
243  elog(ERROR, "too many registered buffers");
244  max_registered_block_id = block_id + 1;
245  }
246 
247  regbuf = &registered_buffers[block_id];
248 
249  BufferGetTag(buffer, &regbuf->rnode, &regbuf->forkno, &regbuf->block);
250  regbuf->page = BufferGetPage(buffer);
251  regbuf->flags = flags;
252  regbuf->rdata_tail = (XLogRecData *) &regbuf->rdata_head;
253  regbuf->rdata_len = 0;
254 
255  /*
256  * Check that this page hasn't already been registered with some other
257  * block_id.
258  */
259 #ifdef USE_ASSERT_CHECKING
260  {
261  int i;
262 
263  for (i = 0; i < max_registered_block_id; i++)
264  {
265  registered_buffer *regbuf_old = &registered_buffers[i];
266 
267  if (i == block_id || !regbuf_old->in_use)
268  continue;
269 
270  Assert(!RelFileNodeEquals(regbuf_old->rnode, regbuf->rnode) ||
271  regbuf_old->forkno != regbuf->forkno ||
272  regbuf_old->block != regbuf->block);
273  }
274  }
275 #endif
276 
277  regbuf->in_use = true;
278 }
BlockNumber block
Definition: xloginsert.c:61
static bool begininsert_called
Definition: xloginsert.c:119
XLogRecData * rdata_head
Definition: xloginsert.c:64
RelFileNode rnode
Definition: xloginsert.c:59
#define ERROR
Definition: elog.h:46
static int max_registered_buffers
Definition: xloginsert.c:77
#define BufferGetPage(buffer)
Definition: bufmgr.h:169
XLogRecData * rdata_tail
Definition: xloginsert.c:66
static registered_buffer * registered_buffers
Definition: xloginsert.c:76
#define REGBUF_FORCE_IMAGE
Definition: xloginsert.h:31
#define Assert(condition)
Definition: c.h:804
#define REGBUF_NO_IMAGE
Definition: xloginsert.h:32
ForkNumber forkno
Definition: xloginsert.c:60
static int max_registered_block_id
Definition: xloginsert.c:78
#define elog(elevel,...)
Definition: elog.h:232
int i
void BufferGetTag(Buffer buffer, RelFileNode *rnode, ForkNumber *forknum, BlockNumber *blknum)
Definition: bufmgr.c:2769
#define RelFileNodeEquals(node1, node2)
Definition: relfilenode.h:88

◆ XLogRegisterData()

void XLogRegisterData ( char *  data,
int  len 
)

Definition at line 340 of file xloginsert.c.

References Assert, begininsert_called, XLogRecData::data, elog, ERROR, XLogRecData::len, mainrdata_len, max_rdatas, XLogRecData::next, and num_rdatas.

Referenced by _bt_dedup_pass(), _bt_delitems_delete(), _bt_delitems_vacuum(), _bt_getroot(), _bt_insertonpg(), _bt_log_reuse_page(), _bt_mark_page_halfdead(), _bt_newroot(), _bt_split(), _bt_unlink_halfdead_page(), _hash_addovflpage(), _hash_doinsert(), _hash_expandtable(), _hash_freeovflpage(), _hash_init(), _hash_splitbucket(), _hash_squeezebucket(), _hash_vacuum_one_page(), addLeafTuple(), AssignTransactionId(), brin_doinsert(), brin_doupdate(), brinbuild(), brinRevmapDesummarizeRange(), CreateCheckPoint(), createdb(), CreateEndOfRecoveryRecord(), CreateOverwriteContrecordRecord(), createPostingTree(), CreateTableSpace(), do_pg_stop_backup(), do_setval(), doPickSplit(), DropTableSpace(), EndPrepare(), ExecuteTruncateGuts(), fill_seq_with_data(), ginDeletePage(), ginHeapTupleFastInsert(), ginPlaceToPage(), ginUpdateStats(), gistXLogAssignLSN(), gistXLogDelete(), gistXLogPageDelete(), gistXLogPageReuse(), gistXLogSplit(), gistXLogUpdate(), hashbucketcleanup(), hashbulkdelete(), heap_abort_speculative(), heap_delete(), heap_finish_speculative(), heap_inplace_update(), heap_insert(), heap_lock_tuple(), heap_lock_updated_tuple_rec(), heap_multi_insert(), heap_page_prune(), heap_update(), lazy_vacuum_heap_page(), log_heap_freeze(), log_heap_new_cid(), log_heap_update(), log_heap_visible(), log_smgrcreate(), LogAccessExclusiveLocks(), LogCurrentRunningXacts(), logical_heap_rewrite_flush_mappings(), LogLogicalInvalidations(), LogLogicalMessage(), LogStandbyInvalidations(), movedb(), moveLeafs(), MultiXactIdCreateFromMembers(), nextval_internal(), pg_truncate_visibility_map(), RelationTruncate(), remove_dbtablespaces(), replorigin_advance(), replorigin_drop_guts(), revmap_physical_extend(), shiftList(), spgAddNodeAction(), spgSplitNodeAction(), UpdateFullPageWrites(), vacuumLeafPage(), vacuumLeafRoot(), vacuumRedirectAndPlaceholder(), write_relmap_file(), writeListPage(), WriteMTruncateXlogRec(), WriteMZeroPageXlogRec(), WriteTruncateXlogRec(), WriteZeroPageXlogRec(), XactLogAbortRecord(), XactLogCommitRecord(), XLogPutNextOid(), XLogReportParameters(), and XLogRestorePoint().

341 {
342  XLogRecData *rdata;
343 
345 
346  if (num_rdatas >= max_rdatas)
347  elog(ERROR, "too much WAL data");
348  rdata = &rdatas[num_rdatas++];
349 
350  rdata->data = data;
351  rdata->len = len;
352 
353  /*
354  * we use the mainrdata_last pointer to track the end of the chain, so no
355  * need to clear 'next' here.
356  */
357 
358  mainrdata_last->next = rdata;
359  mainrdata_last = rdata;
360 
361  mainrdata_len += len;
362 }
static uint32 mainrdata_len
Definition: xloginsert.c:87
static bool begininsert_called
Definition: xloginsert.c:119
#define ERROR
Definition: elog.h:46
static int max_rdatas
Definition: xloginsert.c:117
static XLogRecData * mainrdata_last
Definition: xloginsert.c:86
static int num_rdatas
Definition: xloginsert.c:116
#define Assert(condition)
Definition: c.h:804
struct XLogRecData * next
#define elog(elevel,...)
Definition: elog.h:232
static XLogRecData * rdatas
Definition: xloginsert.c:115

◆ XLogResetInsertion()

void XLogResetInsertion ( void  )

Definition at line 208 of file xloginsert.c.

References begininsert_called, curinsert_flags, i, mainrdata_len, MarkSubTransactionAssigned(), max_registered_block_id, num_rdatas, and XLOG_INCLUDE_XID.

Referenced by AbortSubTransaction(), AbortTransaction(), and XLogInsert().

209 {
210  int i;
211 
212  /* reset the subxact assignment flag (if needed) */
215 
216  for (i = 0; i < max_registered_block_id; i++)
217  registered_buffers[i].in_use = false;
218 
219  num_rdatas = 0;
220  max_registered_block_id = 0;
221  mainrdata_len = 0;
223  curinsert_flags = 0;
224  begininsert_called = false;
225 }
void MarkSubTransactionAssigned(void)
Definition: xact.c:6150
static uint32 mainrdata_len
Definition: xloginsert.c:87
static bool begininsert_called
Definition: xloginsert.c:119
static XLogRecData * mainrdata_head
Definition: xloginsert.c:85
static registered_buffer * registered_buffers
Definition: xloginsert.c:76
#define XLOG_INCLUDE_XID
Definition: xlog.h:215
static XLogRecData * mainrdata_last
Definition: xloginsert.c:86
static int num_rdatas
Definition: xloginsert.c:116
static int max_registered_block_id
Definition: xloginsert.c:78
int i
static uint8 curinsert_flags
Definition: xloginsert.c:90

◆ XLogSaveBufferForHint()

XLogRecPtr XLogSaveBufferForHint ( Buffer  buffer,
bool  buffer_std 
)

Definition at line 972 of file xloginsert.c.

References Assert, BufferGetBlock, BufferGetLSNAtomic(), BufferGetPage, BufferGetTag(), PGAlignedBlock::data, PGPROC::delayChkpt, GetRedoRecPtr(), InvalidXLogRecPtr, lower(), MyProc, RedoRecPtr, REGBUF_STANDARD, upper(), XLOG_FPI_FOR_HINT, XLogBeginInsert(), XLogInsert(), and XLogRegisterBlock().

Referenced by MarkBufferDirtyHint().

973 {
974  XLogRecPtr recptr = InvalidXLogRecPtr;
975  XLogRecPtr lsn;
977 
978  /*
979  * Ensure no checkpoint can change our view of RedoRecPtr.
980  */
982 
983  /*
984  * Update RedoRecPtr so that we can make the right decision
985  */
986  RedoRecPtr = GetRedoRecPtr();
987 
988  /*
989  * We assume page LSN is first data on *every* page that can be passed to
990  * XLogInsert, whether it has the standard page layout or not. Since we're
991  * only holding a share-lock on the page, we must take the buffer header
992  * lock when we look at the LSN.
993  */
994  lsn = BufferGetLSNAtomic(buffer);
995 
996  if (lsn <= RedoRecPtr)
997  {
998  int flags = 0;
999  PGAlignedBlock copied_buffer;
1000  char *origdata = (char *) BufferGetBlock(buffer);
1001  RelFileNode rnode;
1002  ForkNumber forkno;
1003  BlockNumber blkno;
1004 
1005  /*
1006  * Copy buffer so we don't have to worry about concurrent hint bit or
1007  * lsn updates. We assume pd_lower/upper cannot be changed without an
1008  * exclusive lock, so the contents bkp are not racy.
1009  */
1010  if (buffer_std)
1011  {
1012  /* Assume we can omit data between pd_lower and pd_upper */
1013  Page page = BufferGetPage(buffer);
1014  uint16 lower = ((PageHeader) page)->pd_lower;
1015  uint16 upper = ((PageHeader) page)->pd_upper;
1016 
1017  memcpy(copied_buffer.data, origdata, lower);
1018  memcpy(copied_buffer.data + upper, origdata + upper, BLCKSZ - upper);
1019  }
1020  else
1021  memcpy(copied_buffer.data, origdata, BLCKSZ);
1022 
1023  XLogBeginInsert();
1024 
1025  if (buffer_std)
1026  flags |= REGBUF_STANDARD;
1027 
1028  BufferGetTag(buffer, &rnode, &forkno, &blkno);
1029  XLogRegisterBlock(0, &rnode, forkno, blkno, copied_buffer.data, flags);
1030 
1031  recptr = XLogInsert(RM_XLOG_ID, XLOG_FPI_FOR_HINT);
1032  }
1033 
1034  return recptr;
1035 }
#define InvalidXLogRecPtr
Definition: xlogdefs.h:28
Datum lower(PG_FUNCTION_ARGS)
Definition: oracle_compat.c:46
PGPROC * MyProc
Definition: proc.c:68
uint32 BlockNumber
Definition: block.h:31
Datum upper(PG_FUNCTION_ARGS)
Definition: oracle_compat.c:77
char data[BLCKSZ]
Definition: c.h:1141
void XLogRegisterBlock(uint8 block_id, RelFileNode *rnode, ForkNumber forknum, BlockNumber blknum, Page page, uint8 flags)
Definition: xloginsert.c:285
unsigned short uint16
Definition: c.h:440
bool delayChkpt
Definition: proc.h:187
static XLogRecPtr RedoRecPtr
Definition: xlog.c:367
XLogRecPtr BufferGetLSNAtomic(Buffer buffer)
Definition: bufmgr.c:3008
#define REGBUF_STANDARD
Definition: xloginsert.h:35
#define BufferGetPage(buffer)
Definition: bufmgr.h:169
ForkNumber
Definition: relpath.h:40
XLogRecPtr XLogInsert(RmgrId rmid, uint8 info)
Definition: xloginsert.c:434
PageHeaderData * PageHeader
Definition: bufpage.h:166
uint64 XLogRecPtr
Definition: xlogdefs.h:21
#define Assert(condition)
Definition: c.h:804
#define XLOG_FPI_FOR_HINT
Definition: pg_control.h:77
XLogRecPtr GetRedoRecPtr(void)
Definition: xlog.c:8638
void BufferGetTag(Buffer buffer, RelFileNode *rnode, ForkNumber *forknum, BlockNumber *blknum)
Definition: bufmgr.c:2769
void XLogBeginInsert(void)
Definition: xloginsert.c:135
#define BufferGetBlock(buffer)
Definition: bufmgr.h:136
Pointer Page
Definition: bufpage.h:78

◆ XLogSetRecordFlags()