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 dependency graph for xloginsert.h:
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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 nbuffers, 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)
 
XLogRecPtr log_newpage_buffer (Buffer buffer, 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 37 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

◆ REGBUF_WILL_INIT

◆ XLR_NORMAL_MAX_BLOCK_ID

#define XLR_NORMAL_MAX_BLOCK_ID   4

Definition at line 26 of file xloginsert.h.

Referenced by InitXLogInsert(), and XLogEnsureRecordSpace().

◆ XLR_NORMAL_RDATAS

#define XLR_NORMAL_RDATAS   20

Definition at line 27 of file xloginsert.h.

Referenced by InitXLogInsert(), and XLogEnsureRecordSpace().

Function Documentation

◆ InitXLogInsert()

void InitXLogInsert ( void  )

Definition at line 1028 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().

1029 {
1030  /* Initialize the working areas */
1031  if (xloginsert_cxt == NULL)
1032  {
1034  "WAL record construction",
1036  }
1037 
1038  if (registered_buffers == NULL)
1039  {
1042  sizeof(registered_buffer) * (XLR_NORMAL_MAX_BLOCK_ID + 1));
1044  }
1045  if (rdatas == NULL)
1046  {
1048  sizeof(XLogRecData) * XLR_NORMAL_RDATAS);
1050  }
1051 
1052  /*
1053  * Allocate a buffer to hold the header information for a WAL record.
1054  */
1055  if (hdr_scratch == NULL)
1058 }
#define HEADER_SCRATCH_SIZE
Definition: xloginsert.c:92
#define XLR_NORMAL_RDATAS
Definition: xloginsert.h:27
static int max_registered_buffers
Definition: xloginsert.c:64
#define ALLOCSET_DEFAULT_SIZES
Definition: memutils.h:165
static int max_rdatas
Definition: xloginsert.c:102
MemoryContext TopMemoryContext
Definition: mcxt.c:43
static registered_buffer * registered_buffers
Definition: xloginsert.c:63
MemoryContext AllocSetContextCreate(MemoryContext parent, const char *name, Size minContextSize, Size initBlockSize, Size maxBlockSize)
Definition: aset.c:322
void * MemoryContextAllocZero(MemoryContext context, Size size)
Definition: mcxt.c:741
#define XLR_NORMAL_MAX_BLOCK_ID
Definition: xloginsert.h:26
static char * hdr_scratch
Definition: xloginsert.c:88
void * MemoryContextAlloc(MemoryContext context, Size size)
Definition: mcxt.c:706
static MemoryContext xloginsert_cxt
Definition: xloginsert.c:107
static XLogRecData * rdatas
Definition: xloginsert.c:100

◆ log_newpage()

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

Definition at line 972 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(), copy_relation_data(), end_heap_rewrite(), log_newpage_buffer(), raw_heap_insert(), and spgbuildempty().

974 {
975  int flags;
976  XLogRecPtr recptr;
977 
978  flags = REGBUF_FORCE_IMAGE;
979  if (page_std)
980  flags |= REGBUF_STANDARD;
981 
982  XLogBeginInsert();
983  XLogRegisterBlock(0, rnode, forkNum, blkno, page, flags);
984  recptr = XLogInsert(RM_XLOG_ID, XLOG_FPI);
985 
986  /*
987  * The page may be uninitialized. If so, we can't set the LSN because that
988  * would corrupt the page.
989  */
990  if (!PageIsNew(page))
991  {
992  PageSetLSN(page, recptr);
993  }
994 
995  return recptr;
996 }
void XLogRegisterBlock(uint8 block_id, RelFileNode *rnode, ForkNumber forknum, BlockNumber blknum, Page page, uint8 flags)
Definition: xloginsert.c:266
#define REGBUF_STANDARD
Definition: xloginsert.h:34
#define REGBUF_FORCE_IMAGE
Definition: xloginsert.h:30
XLogRecPtr XLogInsert(RmgrId rmid, uint8 info)
Definition: xloginsert.c:415
uint64 XLogRecPtr
Definition: xlogdefs.h:21
#define XLOG_FPI
Definition: pg_control.h:78
#define PageIsNew(page)
Definition: bufpage.h:225
void XLogBeginInsert(void)
Definition: xloginsert.c:120
#define PageSetLSN(page, lsn)
Definition: bufpage.h:364

◆ log_newpage_buffer()

XLogRecPtr log_newpage_buffer ( Buffer  buffer,
bool  page_std 
)

Definition at line 1009 of file xloginsert.c.

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

Referenced by brin_initialize_empty_new_buffer(), brinbuildempty(), FreeSpaceMapTruncateRel(), ginbuildempty(), gistbuildempty(), lazy_scan_heap(), and visibilitymap_truncate().

1010 {
1011  Page page = BufferGetPage(buffer);
1012  RelFileNode rnode;
1013  ForkNumber forkNum;
1014  BlockNumber blkno;
1015 
1016  /* Shared buffers should be modified in a critical section. */
1017  Assert(CritSectionCount > 0);
1018 
1019  BufferGetTag(buffer, &rnode, &forkNum, &blkno);
1020 
1021  return log_newpage(&rnode, forkNum, blkno, page, page_std);
1022 }
uint32 BlockNumber
Definition: block.h:31
volatile uint32 CritSectionCount
Definition: globals.c:37
#define BufferGetPage(buffer)
Definition: bufmgr.h:160
ForkNumber
Definition: relpath.h:24
#define Assert(condition)
Definition: c.h:670
WalTimeSample buffer[LAG_TRACKER_BUFFER_SIZE]
Definition: walsender.c:214
XLogRecPtr log_newpage(RelFileNode *rnode, ForkNumber forkNum, BlockNumber blkno, Page page, bool page_std)
Definition: xloginsert.c:972
void BufferGetTag(Buffer buffer, RelFileNode *rnode, ForkNumber *forknum, BlockNumber *blknum)
Definition: bufmgr.c:2626
Pointer Page
Definition: bufpage.h:74

◆ XLogBeginInsert()

void XLogBeginInsert ( void  )

Definition at line 120 of file xloginsert.c.

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

Referenced by _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(), createPostingTree(), CreateTableSpace(), do_pg_stop_backup(), do_setval(), doPickSplit(), DropTableSpace(), EndPrepare(), fill_seq_with_data(), GenericXLogFinish(), ginbuild(), ginDeletePage(), ginHeapTupleFastInsert(), ginPlaceToPage(), ginUpdateStats(), ginVacuumPostingTreeLeaf(), gistbuild(), 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_update(), log_heap_clean(), log_heap_cleanup_info(), log_heap_freeze(), log_heap_new_cid(), log_heap_update(), log_heap_visible(), log_newpage(), log_smgrcreate(), log_split_page(), LogAccessExclusiveLocks(), LogCurrentRunningXacts(), logical_heap_rewrite_flush_mappings(), LogLogicalMessage(), LogStandbyInvalidations(), movedb(), moveLeafs(), MultiXactIdCreateFromMembers(), nextval_internal(), pg_truncate_visibility_map(), RelationTruncate(), remove_dbtablespaces(), replorigin_advance(), replorigin_drop(), RequestXLogSwitch(), revmap_physical_extend(), shiftList(), spgAddNodeAction(), spgbuild(), spgSplitNodeAction(), UpdateFullPageWrites(), vacuumLeafPage(), vacuumLeafRoot(), vacuumRedirectAndPlaceholder(), write_relmap_file(), writeListPage(), WriteMTruncateXlogRec(), WriteMZeroPageXlogRec(), WriteSetTimestampXlogRec(), WriteTruncateXlogRec(), WriteZeroPageXlogRec(), XactLogAbortRecord(), XactLogCommitRecord(), XLogPutNextOid(), XLogReportParameters(), XLogRestorePoint(), XLogSaveBufferForHint(), and xlogVacuumPage().

121 {
124  Assert(mainrdata_len == 0);
125 
126  /* cross-check on whether we should be here or not */
127  if (!XLogInsertAllowed())
128  elog(ERROR, "cannot make new WAL entries during recovery");
129 
130  if (begininsert_called)
131  elog(ERROR, "XLogBeginInsert was already called");
132 
133  begininsert_called = true;
134 }
static uint32 mainrdata_len
Definition: xloginsert.c:74
static bool begininsert_called
Definition: xloginsert.c:104
#define ERROR
Definition: elog.h:43
static XLogRecData * mainrdata_head
Definition: xloginsert.c:72
bool XLogInsertAllowed(void)
Definition: xlog.c:8024
static XLogRecData * mainrdata_last
Definition: xloginsert.c:73
#define Assert(condition)
Definition: c.h:670
static int max_registered_block_id
Definition: xloginsert.c:65
#define elog
Definition: elog.h:219

◆ XLogCheckBufferNeedsBackup()

bool XLogCheckBufferNeedsBackup ( Buffer  buffer)

Definition at line 855 of file xloginsert.c.

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

Referenced by log_heap_update().

856 {
858  bool doPageWrites;
859  Page page;
860 
861  GetFullPageWriteInfo(&RedoRecPtr, &doPageWrites);
862 
863  page = BufferGetPage(buffer);
864 
865  if (doPageWrites && PageGetLSN(page) <= RedoRecPtr)
866  return true; /* buffer requires backup */
867 
868  return false; /* buffer does not need to be backed up */
869 }
static bool doPageWrites
Definition: xlog.c:359
static XLogRecPtr RedoRecPtr
Definition: xlog.c:352
#define BufferGetPage(buffer)
Definition: bufmgr.h:160
uint64 XLogRecPtr
Definition: xlogdefs.h:21
WalTimeSample buffer[LAG_TRACKER_BUFFER_SIZE]
Definition: walsender.c:214
#define PageGetLSN(page)
Definition: bufpage.h:362
void GetFullPageWriteInfo(XLogRecPtr *RedoRecPtr_p, bool *doPageWrites_p)
Definition: xlog.c:8230
Pointer Page
Definition: bufpage.h:74

◆ XLogEnsureRecordSpace()

void XLogEnsureRecordSpace ( int  nbuffers,
int  ndatas 
)

Definition at line 146 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(), and shiftList().

147 {
148  int nbuffers;
149 
150  /*
151  * This must be called before entering a critical section, because
152  * allocating memory inside a critical section can fail. repalloc() will
153  * check the same, but better to check it here too so that we fail
154  * consistently even if the arrays happen to be large enough already.
155  */
156  Assert(CritSectionCount == 0);
157 
158  /* the minimum values can't be decreased */
159  if (max_block_id < XLR_NORMAL_MAX_BLOCK_ID)
160  max_block_id = XLR_NORMAL_MAX_BLOCK_ID;
161  if (ndatas < XLR_NORMAL_RDATAS)
162  ndatas = XLR_NORMAL_RDATAS;
163 
164  if (max_block_id > XLR_MAX_BLOCK_ID)
165  elog(ERROR, "maximum number of WAL record block references exceeded");
166  nbuffers = max_block_id + 1;
167 
168  if (nbuffers > max_registered_buffers)
169  {
171  repalloc(registered_buffers, sizeof(registered_buffer) * nbuffers);
172 
173  /*
174  * At least the padding bytes in the structs must be zeroed, because
175  * they are included in WAL data, but initialize it all for tidiness.
176  */
178  (nbuffers - max_registered_buffers) * sizeof(registered_buffer));
179  max_registered_buffers = nbuffers;
180  }
181 
182  if (ndatas > max_rdatas)
183  {
184  rdatas = (XLogRecData *) repalloc(rdatas, sizeof(XLogRecData) * ndatas);
185  max_rdatas = ndatas;
186  }
187 }
#define XLR_NORMAL_RDATAS
Definition: xloginsert.h:27
#define MemSet(start, val, len)
Definition: c.h:853
#define ERROR
Definition: elog.h:43
static int max_registered_buffers
Definition: xloginsert.c:64
volatile uint32 CritSectionCount
Definition: globals.c:37
static int max_rdatas
Definition: xloginsert.c:102
#define XLR_MAX_BLOCK_ID
Definition: xlogrecord.h:222
static registered_buffer * registered_buffers
Definition: xloginsert.c:63
#define XLR_NORMAL_MAX_BLOCK_ID
Definition: xloginsert.h:26
#define Assert(condition)
Definition: c.h:670
void * repalloc(void *pointer, Size size)
Definition: mcxt.c:962
#define elog
Definition: elog.h:219
static XLogRecData * rdatas
Definition: xloginsert.c:100

◆ XLogInsert()

XLogRecPtr XLogInsert ( RmgrId  rmid,
uint8  info 
)

Definition at line 415 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_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(), createPostingTree(), CreateTableSpace(), do_pg_stop_backup(), do_setval(), doPickSplit(), DropTableSpace(), EndPrepare(), fill_seq_with_data(), GenericXLogFinish(), ginbuild(), ginDeletePage(), ginHeapTupleFastInsert(), ginPlaceToPage(), ginUpdateStats(), ginVacuumPostingTreeLeaf(), gistbuild(), 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_update(), log_heap_clean(), log_heap_cleanup_info(), log_heap_freeze(), log_heap_new_cid(), log_heap_update(), log_heap_visible(), log_newpage(), log_smgrcreate(), log_split_page(), LogAccessExclusiveLocks(), LogCurrentRunningXacts(), logical_heap_rewrite_flush_mappings(), LogLogicalMessage(), LogStandbyInvalidations(), movedb(), moveLeafs(), MultiXactIdCreateFromMembers(), nextval_internal(), pg_truncate_visibility_map(), RelationTruncate(), remove_dbtablespaces(), replorigin_advance(), replorigin_drop(), RequestXLogSwitch(), revmap_physical_extend(), shiftList(), spgAddNodeAction(), spgbuild(), spgSplitNodeAction(), UpdateFullPageWrites(), vacuumLeafPage(), vacuumLeafRoot(), vacuumRedirectAndPlaceholder(), write_relmap_file(), writeListPage(), WriteMTruncateXlogRec(), WriteMZeroPageXlogRec(), WriteSetTimestampXlogRec(), WriteTruncateXlogRec(), WriteZeroPageXlogRec(), XactLogAbortRecord(), XactLogCommitRecord(), XLogPutNextOid(), XLogReportParameters(), XLogRestorePoint(), XLogSaveBufferForHint(), and xlogVacuumPage().

416 {
417  XLogRecPtr EndPos;
418 
419  /* XLogBeginInsert() must have been called. */
420  if (!begininsert_called)
421  elog(ERROR, "XLogBeginInsert was not called");
422 
423  /*
424  * The caller can set rmgr bits, XLR_SPECIAL_REL_UPDATE and
425  * XLR_CHECK_CONSISTENCY; the rest are reserved for use by me.
426  */
427  if ((info & ~(XLR_RMGR_INFO_MASK |
429  XLR_CHECK_CONSISTENCY)) != 0)
430  elog(PANIC, "invalid xlog info mask %02X", info);
431 
432  TRACE_POSTGRESQL_WAL_INSERT(rmid, info);
433 
434  /*
435  * In bootstrap mode, we don't actually log anything but XLOG resources;
436  * return a phony record pointer.
437  */
438  if (IsBootstrapProcessingMode() && rmid != RM_XLOG_ID)
439  {
441  EndPos = SizeOfXLogLongPHD; /* start of 1st chkpt record */
442  return EndPos;
443  }
444 
445  do
446  {
448  bool doPageWrites;
449  XLogRecPtr fpw_lsn;
450  XLogRecData *rdt;
451 
452  /*
453  * Get values needed to decide whether to do full-page writes. Since
454  * we don't yet have an insertion lock, these could change under us,
455  * but XLogInsertRecord will recheck them once it has a lock.
456  */
457  GetFullPageWriteInfo(&RedoRecPtr, &doPageWrites);
458 
459  rdt = XLogRecordAssemble(rmid, info, RedoRecPtr, doPageWrites,
460  &fpw_lsn);
461 
462  EndPos = XLogInsertRecord(rdt, fpw_lsn, curinsert_flags);
463  } while (EndPos == InvalidXLogRecPtr);
464 
466 
467  return EndPos;
468 }
#define InvalidXLogRecPtr
Definition: xlogdefs.h:28
#define XLR_SPECIAL_REL_UPDATE
Definition: xlogrecord.h:71
static bool begininsert_called
Definition: xloginsert.c:104
#define PANIC
Definition: elog.h:53
#define XLR_CHECK_CONSISTENCY
Definition: xlogrecord.h:80
static bool doPageWrites
Definition: xlog.c:359
#define ERROR
Definition: elog.h:43
void XLogResetInsertion(void)
Definition: xloginsert.c:193
XLogRecPtr XLogInsertRecord(XLogRecData *rdata, XLogRecPtr fpw_lsn, uint8 flags)
Definition: xlog.c:960
static XLogRecPtr RedoRecPtr
Definition: xlog.c:352
static XLogRecData * XLogRecordAssemble(RmgrId rmid, uint8 info, XLogRecPtr RedoRecPtr, bool doPageWrites, XLogRecPtr *fpw_lsn)
Definition: xloginsert.c:483
uint64 XLogRecPtr
Definition: xlogdefs.h:21
#define IsBootstrapProcessingMode()
Definition: miscadmin.h:367
void GetFullPageWriteInfo(XLogRecPtr *RedoRecPtr_p, bool *doPageWrites_p)
Definition: xlog.c:8230
#define elog
Definition: elog.h:219
static uint8 curinsert_flags
Definition: xloginsert.c:77
#define SizeOfXLogLongPHD
Definition: xlog_internal.h:72
#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 266 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, REGBUF_FORCE_IMAGE, RelFileNodeEquals, and registered_buffer::rnode.

Referenced by log_newpage(), and XLogSaveBufferForHint().

268 {
269  registered_buffer *regbuf;
270 
271  /* This is currently only used to WAL-log a full-page image of a page */
272  Assert(flags & REGBUF_FORCE_IMAGE);
274 
275  if (block_id >= max_registered_block_id)
276  max_registered_block_id = block_id + 1;
277 
278  if (block_id >= max_registered_buffers)
279  elog(ERROR, "too many registered buffers");
280 
281  regbuf = &registered_buffers[block_id];
282 
283  regbuf->rnode = *rnode;
284  regbuf->forkno = forknum;
285  regbuf->block = blknum;
286  regbuf->page = page;
287  regbuf->flags = flags;
288  regbuf->rdata_tail = (XLogRecData *) &regbuf->rdata_head;
289  regbuf->rdata_len = 0;
290 
291  /*
292  * Check that this page hasn't already been registered with some other
293  * block_id.
294  */
295 #ifdef USE_ASSERT_CHECKING
296  {
297  int i;
298 
299  for (i = 0; i < max_registered_block_id; i++)
300  {
301  registered_buffer *regbuf_old = &registered_buffers[i];
302 
303  if (i == block_id || !regbuf_old->in_use)
304  continue;
305 
306  Assert(!RelFileNodeEquals(regbuf_old->rnode, regbuf->rnode) ||
307  regbuf_old->forkno != regbuf->forkno ||
308  regbuf_old->block != regbuf->block);
309  }
310  }
311 #endif
312 
313  regbuf->in_use = true;
314 }
BlockNumber block
Definition: xloginsert.c:48
static bool begininsert_called
Definition: xloginsert.c:104
XLogRecData * rdata_head
Definition: xloginsert.c:51
RelFileNode rnode
Definition: xloginsert.c:46
#define ERROR
Definition: elog.h:43
static int max_registered_buffers
Definition: xloginsert.c:64
XLogRecData * rdata_tail
Definition: xloginsert.c:53
static registered_buffer * registered_buffers
Definition: xloginsert.c:63
#define REGBUF_FORCE_IMAGE
Definition: xloginsert.h:30
#define Assert(condition)
Definition: c.h:670
ForkNumber forkno
Definition: xloginsert.c:47
static int max_registered_block_id
Definition: xloginsert.c:65
int i
#define elog
Definition: elog.h:219
#define RelFileNodeEquals(node1, node2)
Definition: relfilenode.h:88

◆ XLogRegisterBufData()

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

Definition at line 361 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_delitems_vacuum(), _bt_getroot(), _bt_insertonpg(), _bt_newroot(), _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(), log_heap_clean(), log_heap_freeze(), log_heap_update(), and writeListPage().

362 {
363  registered_buffer *regbuf;
364  XLogRecData *rdata;
365 
367 
368  /* find the registered buffer struct */
369  regbuf = &registered_buffers[block_id];
370  if (!regbuf->in_use)
371  elog(ERROR, "no block with id %d registered with WAL insertion",
372  block_id);
373 
374  if (num_rdatas >= max_rdatas)
375  elog(ERROR, "too much WAL data");
376  rdata = &rdatas[num_rdatas++];
377 
378  rdata->data = data;
379  rdata->len = len;
380 
381  regbuf->rdata_tail->next = rdata;
382  regbuf->rdata_tail = rdata;
383  regbuf->rdata_len += len;
384 }
static bool begininsert_called
Definition: xloginsert.c:104
#define ERROR
Definition: elog.h:43
XLogRecData * rdata_tail
Definition: xloginsert.c:53
static int max_rdatas
Definition: xloginsert.c:102
static registered_buffer * registered_buffers
Definition: xloginsert.c:63
static int num_rdatas
Definition: xloginsert.c:101
#define Assert(condition)
Definition: c.h:670
struct XLogRecData * next
#define elog
Definition: elog.h:219
static XLogRecData * rdatas
Definition: xloginsert.c:100

◆ XLogRegisterBuffer()

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

Definition at line 213 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_delitems_delete(), _bt_delitems_vacuum(), _bt_getroot(), _bt_insertonpg(), _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(), brin_doinsert(), brin_doupdate(), brinbuild(), brinRevmapDesummarizeRange(), createPostingTree(), do_setval(), doPickSplit(), fill_seq_with_data(), GenericXLogFinish(), ginbuild(), ginDeletePage(), ginHeapTupleFastInsert(), ginPlaceToPage(), ginUpdateStats(), ginVacuumPostingTreeLeaf(), gistbuild(), 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_update(), log_heap_clean(), log_heap_freeze(), log_heap_update(), log_heap_visible(), log_split_page(), moveLeafs(), nextval_internal(), revmap_physical_extend(), shiftList(), spgAddNodeAction(), spgbuild(), spgSplitNodeAction(), vacuumLeafPage(), vacuumLeafRoot(), vacuumRedirectAndPlaceholder(), writeListPage(), and xlogVacuumPage().

214 {
215  registered_buffer *regbuf;
216 
217  /* NO_IMAGE doesn't make sense with FORCE_IMAGE */
218  Assert(!((flags & REGBUF_FORCE_IMAGE) && (flags & (REGBUF_NO_IMAGE))));
220 
221  if (block_id >= max_registered_block_id)
222  {
223  if (block_id >= max_registered_buffers)
224  elog(ERROR, "too many registered buffers");
225  max_registered_block_id = block_id + 1;
226  }
227 
228  regbuf = &registered_buffers[block_id];
229 
230  BufferGetTag(buffer, &regbuf->rnode, &regbuf->forkno, &regbuf->block);
231  regbuf->page = BufferGetPage(buffer);
232  regbuf->flags = flags;
233  regbuf->rdata_tail = (XLogRecData *) &regbuf->rdata_head;
234  regbuf->rdata_len = 0;
235 
236  /*
237  * Check that this page hasn't already been registered with some other
238  * block_id.
239  */
240 #ifdef USE_ASSERT_CHECKING
241  {
242  int i;
243 
244  for (i = 0; i < max_registered_block_id; i++)
245  {
246  registered_buffer *regbuf_old = &registered_buffers[i];
247 
248  if (i == block_id || !regbuf_old->in_use)
249  continue;
250 
251  Assert(!RelFileNodeEquals(regbuf_old->rnode, regbuf->rnode) ||
252  regbuf_old->forkno != regbuf->forkno ||
253  regbuf_old->block != regbuf->block);
254  }
255  }
256 #endif
257 
258  regbuf->in_use = true;
259 }
BlockNumber block
Definition: xloginsert.c:48
static bool begininsert_called
Definition: xloginsert.c:104
XLogRecData * rdata_head
Definition: xloginsert.c:51
RelFileNode rnode
Definition: xloginsert.c:46
#define ERROR
Definition: elog.h:43
static int max_registered_buffers
Definition: xloginsert.c:64
#define BufferGetPage(buffer)
Definition: bufmgr.h:160
XLogRecData * rdata_tail
Definition: xloginsert.c:53
static registered_buffer * registered_buffers
Definition: xloginsert.c:63
#define REGBUF_FORCE_IMAGE
Definition: xloginsert.h:30
#define Assert(condition)
Definition: c.h:670
WalTimeSample buffer[LAG_TRACKER_BUFFER_SIZE]
Definition: walsender.c:214
#define REGBUF_NO_IMAGE
Definition: xloginsert.h:31
ForkNumber forkno
Definition: xloginsert.c:47
static int max_registered_block_id
Definition: xloginsert.c:65
int i
#define elog
Definition: elog.h:219
void BufferGetTag(Buffer buffer, RelFileNode *rnode, ForkNumber *forknum, BlockNumber *blknum)
Definition: bufmgr.c:2626
#define RelFileNodeEquals(node1, node2)
Definition: relfilenode.h:88

◆ XLogRegisterData()

void XLogRegisterData ( char *  data,
int  len 
)

Definition at line 323 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_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(), createPostingTree(), CreateTableSpace(), do_pg_stop_backup(), do_setval(), doPickSplit(), DropTableSpace(), EndPrepare(), fill_seq_with_data(), ginDeletePage(), ginHeapTupleFastInsert(), ginPlaceToPage(), ginUpdateStats(), 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_update(), log_heap_clean(), log_heap_cleanup_info(), log_heap_freeze(), log_heap_new_cid(), log_heap_update(), log_heap_visible(), log_smgrcreate(), LogAccessExclusiveLocks(), LogCurrentRunningXacts(), logical_heap_rewrite_flush_mappings(), LogLogicalMessage(), LogStandbyInvalidations(), movedb(), moveLeafs(), MultiXactIdCreateFromMembers(), nextval_internal(), pg_truncate_visibility_map(), RelationTruncate(), remove_dbtablespaces(), replorigin_advance(), replorigin_drop(), revmap_physical_extend(), shiftList(), spgAddNodeAction(), spgSplitNodeAction(), UpdateFullPageWrites(), vacuumLeafPage(), vacuumLeafRoot(), vacuumRedirectAndPlaceholder(), write_relmap_file(), writeListPage(), WriteMTruncateXlogRec(), WriteMZeroPageXlogRec(), WriteSetTimestampXlogRec(), WriteTruncateXlogRec(), WriteZeroPageXlogRec(), XactLogAbortRecord(), XactLogCommitRecord(), XLogPutNextOid(), XLogReportParameters(), and XLogRestorePoint().

324 {
325  XLogRecData *rdata;
326 
328 
329  if (num_rdatas >= max_rdatas)
330  elog(ERROR, "too much WAL data");
331  rdata = &rdatas[num_rdatas++];
332 
333  rdata->data = data;
334  rdata->len = len;
335 
336  /*
337  * we use the mainrdata_last pointer to track the end of the chain, so no
338  * need to clear 'next' here.
339  */
340 
341  mainrdata_last->next = rdata;
342  mainrdata_last = rdata;
343 
344  mainrdata_len += len;
345 }
static uint32 mainrdata_len
Definition: xloginsert.c:74
static bool begininsert_called
Definition: xloginsert.c:104
#define ERROR
Definition: elog.h:43
static int max_rdatas
Definition: xloginsert.c:102
static XLogRecData * mainrdata_last
Definition: xloginsert.c:73
static int num_rdatas
Definition: xloginsert.c:101
#define Assert(condition)
Definition: c.h:670
struct XLogRecData * next
#define elog
Definition: elog.h:219
static XLogRecData * rdatas
Definition: xloginsert.c:100

◆ XLogResetInsertion()

void XLogResetInsertion ( void  )

Definition at line 193 of file xloginsert.c.

References begininsert_called, curinsert_flags, i, mainrdata_len, max_registered_block_id, and num_rdatas.

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

194 {
195  int i;
196 
197  for (i = 0; i < max_registered_block_id; i++)
198  registered_buffers[i].in_use = false;
199 
200  num_rdatas = 0;
201  max_registered_block_id = 0;
202  mainrdata_len = 0;
204  curinsert_flags = 0;
205  begininsert_called = false;
206 }
static uint32 mainrdata_len
Definition: xloginsert.c:74
static bool begininsert_called
Definition: xloginsert.c:104
static XLogRecData * mainrdata_head
Definition: xloginsert.c:72
static registered_buffer * registered_buffers
Definition: xloginsert.c:63
static XLogRecData * mainrdata_last
Definition: xloginsert.c:73
static int num_rdatas
Definition: xloginsert.c:101
static int max_registered_block_id
Definition: xloginsert.c:65
int i
static uint8 curinsert_flags
Definition: xloginsert.c:77

◆ XLogSaveBufferForHint()

XLogRecPtr XLogSaveBufferForHint ( Buffer  buffer,
bool  buffer_std 
)

Definition at line 893 of file xloginsert.c.

References Assert, BufferGetBlock, BufferGetLSNAtomic(), BufferGetPage, BufferGetTag(), PGXACT::delayChkpt, GetRedoRecPtr(), InvalidXLogRecPtr, lower(), MyPgXact, RedoRecPtr, REGBUF_FORCE_IMAGE, REGBUF_STANDARD, upper(), XLOG_FPI_FOR_HINT, XLogBeginInsert(), XLogInsert(), and XLogRegisterBlock().

Referenced by MarkBufferDirtyHint().

894 {
895  XLogRecPtr recptr = InvalidXLogRecPtr;
896  XLogRecPtr lsn;
898 
899  /*
900  * Ensure no checkpoint can change our view of RedoRecPtr.
901  */
903 
904  /*
905  * Update RedoRecPtr so that we can make the right decision
906  */
907  RedoRecPtr = GetRedoRecPtr();
908 
909  /*
910  * We assume page LSN is first data on *every* page that can be passed to
911  * XLogInsert, whether it has the standard page layout or not. Since we're
912  * only holding a share-lock on the page, we must take the buffer header
913  * lock when we look at the LSN.
914  */
915  lsn = BufferGetLSNAtomic(buffer);
916 
917  if (lsn <= RedoRecPtr)
918  {
919  int flags;
920  char copied_buffer[BLCKSZ];
921  char *origdata = (char *) BufferGetBlock(buffer);
922  RelFileNode rnode;
923  ForkNumber forkno;
924  BlockNumber blkno;
925 
926  /*
927  * Copy buffer so we don't have to worry about concurrent hint bit or
928  * lsn updates. We assume pd_lower/upper cannot be changed without an
929  * exclusive lock, so the contents bkp are not racy.
930  */
931  if (buffer_std)
932  {
933  /* Assume we can omit data between pd_lower and pd_upper */
934  Page page = BufferGetPage(buffer);
935  uint16 lower = ((PageHeader) page)->pd_lower;
936  uint16 upper = ((PageHeader) page)->pd_upper;
937 
938  memcpy(copied_buffer, origdata, lower);
939  memcpy(copied_buffer + upper, origdata + upper, BLCKSZ - upper);
940  }
941  else
942  memcpy(copied_buffer, origdata, BLCKSZ);
943 
944  XLogBeginInsert();
945 
946  flags = REGBUF_FORCE_IMAGE;
947  if (buffer_std)
948  flags |= REGBUF_STANDARD;
949 
950  BufferGetTag(buffer, &rnode, &forkno, &blkno);
951  XLogRegisterBlock(0, &rnode, forkno, blkno, copied_buffer, flags);
952 
953  recptr = XLogInsert(RM_XLOG_ID, XLOG_FPI_FOR_HINT);
954  }
955 
956  return recptr;
957 }
#define InvalidXLogRecPtr
Definition: xlogdefs.h:28
Datum lower(PG_FUNCTION_ARGS)
Definition: oracle_compat.c:43
uint32 BlockNumber
Definition: block.h:31
Datum upper(PG_FUNCTION_ARGS)
Definition: oracle_compat.c:74
PGXACT * MyPgXact
Definition: proc.c:68
void XLogRegisterBlock(uint8 block_id, RelFileNode *rnode, ForkNumber forknum, BlockNumber blknum, Page page, uint8 flags)
Definition: xloginsert.c:266
unsigned short uint16
Definition: c.h:295
static XLogRecPtr RedoRecPtr
Definition: xlog.c:352
XLogRecPtr BufferGetLSNAtomic(Buffer buffer)
Definition: bufmgr.c:2832
#define REGBUF_STANDARD
Definition: xloginsert.h:34
#define BufferGetPage(buffer)
Definition: bufmgr.h:160
bool delayChkpt
Definition: proc.h:232
ForkNumber
Definition: relpath.h:24
#define REGBUF_FORCE_IMAGE
Definition: xloginsert.h:30
XLogRecPtr XLogInsert(RmgrId rmid, uint8 info)
Definition: xloginsert.c:415
PageHeaderData * PageHeader
Definition: bufpage.h:162
uint64 XLogRecPtr
Definition: xlogdefs.h:21
#define Assert(condition)
Definition: c.h:670
#define XLOG_FPI_FOR_HINT
Definition: pg_control.h:77
WalTimeSample buffer[LAG_TRACKER_BUFFER_SIZE]
Definition: walsender.c:214
XLogRecPtr GetRedoRecPtr(void)
Definition: xlog.c:8202
void BufferGetTag(Buffer buffer, RelFileNode *rnode, ForkNumber *forknum, BlockNumber *blknum)
Definition: bufmgr.c:2626
void XLogBeginInsert(void)
Definition: xloginsert.c:120
#define BufferGetBlock(buffer)
Definition: bufmgr.h:127
Pointer Page
Definition: bufpage.h:74

◆ XLogSetRecordFlags()

void XLogSetRecordFlags ( uint8  flags)

Definition at line 397 of file xloginsert.c.

References Assert, begininsert_called, and curinsert_flags.

Referenced by heap_delete(), heap_finish_speculative(), heap_insert(), heap_multi_insert(), log_heap_update(), LogAccessExclusiveLocks(), LogCurrentRunningXacts(), LogLogicalMessage(), RequestXLogSwitch(), and XactLogCommitRecord().

398 {
400  curinsert_flags = flags;
401 }
static bool begininsert_called
Definition: xloginsert.c:104
#define Assert(condition)
Definition: c.h:670
static uint8 curinsert_flags
Definition: xloginsert.c:77