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Commit918e864

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committed
Remove some pre-WAL relics:
 SharedBufferChanged BufferRelidLastDirtied BufferTagLastDirtied BufferDirtiedByMeManfred Koizar
1 parent3c35fac commit918e864

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4 files changed

+6
-37
lines changed

4 files changed

+6
-37
lines changed

‎src/backend/access/transam/xact.c‎

Lines changed: 1 addition & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $Header: /cvsroot/pgsql/src/backend/access/transam/xact.c,v 1.126 2002/06/11 13:40:50 wieck Exp $
11+
* $Header: /cvsroot/pgsql/src/backend/access/transam/xact.c,v 1.127 2002/06/15 19:55:37 momjian Exp $
1212
*
1313
* NOTES
1414
*Transaction aborts can now occur two ways:
@@ -182,8 +182,6 @@
182182
#include"pgstat.h"
183183

184184

185-
externboolSharedBufferChanged;
186-
187185
staticvoidAbortTransaction(void);
188186
staticvoidAtAbort_Cache(void);
189187
staticvoidAtAbort_Locks(void);
@@ -991,8 +989,6 @@ CommitTransaction(void)
991989
AtCommit_Memory();
992990
AtEOXact_Files();
993991

994-
SharedBufferChanged= false;/* safest place to do it */
995-
996992
/* Count transaction commit in statistics collector */
997993
pgstat_count_xact_commit();
998994

@@ -1094,8 +1090,6 @@ AbortTransaction(void)
10941090
AtEOXact_Files();
10951091
AtAbort_Locks();
10961092

1097-
SharedBufferChanged= false;/* safest place to do it */
1098-
10991093
/* Count transaction abort in statistics collector */
11001094
pgstat_count_xact_rollback();
11011095

‎src/backend/storage/buffer/buf_init.c‎

Lines changed: 1 addition & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $Header: /cvsroot/pgsql/src/backend/storage/buffer/buf_init.c,v 1.47 2001/11/05 17:46:27 momjian Exp $
11+
* $Header: /cvsroot/pgsql/src/backend/storage/buffer/buf_init.c,v 1.48 2002/06/15 19:55:37 momjian Exp $
1212
*
1313
*-------------------------------------------------------------------------
1414
*/
@@ -60,9 +60,6 @@ Block *BufferBlockPointers;
6060

6161
long*PrivateRefCount;/* also used in freelist.c */
6262
bits8*BufferLocks;/* flag bits showing locks I have set */
63-
BufferTag*BufferTagLastDirtied;/* tag buffer had when last
64-
* dirtied by me */
65-
bool*BufferDirtiedByMe;/* T if buf has been dirtied in cur xact */
6663

6764

6865
/*
@@ -235,9 +232,6 @@ InitBufferPoolAccess(void)
235232
BufferBlockPointers= (Block*)calloc(NBuffers,sizeof(Block));
236233
PrivateRefCount= (long*)calloc(NBuffers,sizeof(long));
237234
BufferLocks= (bits8*)calloc(NBuffers,sizeof(bits8));
238-
BufferTagLastDirtied= (BufferTag*)calloc(NBuffers,sizeof(BufferTag));
239-
BufferDirtiedByMe= (bool*)calloc(NBuffers,sizeof(bool));
240-
241235
/*
242236
* Convert shmem offsets into addresses as seen by this process. This
243237
* is just to speed up the BufferGetBlock() macro.

‎src/backend/storage/buffer/bufmgr.c‎

Lines changed: 3 additions & 19 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $Header: /cvsroot/pgsql/src/backend/storage/buffer/bufmgr.c,v 1.123 2002/04/1523:47:12 momjian Exp $
11+
* $Header: /cvsroot/pgsql/src/backend/storage/buffer/bufmgr.c,v 1.124 2002/06/1519:55:37 momjian Exp $
1212
*
1313
*-------------------------------------------------------------------------
1414
*/
@@ -67,15 +67,6 @@ extern long int LocalBufferHitCount;
6767
externlongintBufferFlushCount;
6868
externlongintLocalBufferFlushCount;
6969

70-
/*
71-
* It's used to avoid disk writes for read-only transactions
72-
* (i.e. when no one shared buffer was changed by transaction).
73-
* We set it to true in WriteBuffer/WriteNoReleaseBuffer when
74-
* marking shared buffer as dirty. We set it to false in xact.c
75-
* after transaction is committed/aborted.
76-
*/
77-
boolSharedBufferChanged= false;
78-
7970
staticvoidWaitIO(BufferDesc*buf);
8071
staticvoidStartBufferIO(BufferDesc*buf,boolforInput);
8172
staticvoidTerminateBufferIO(BufferDesc*buf);
@@ -593,8 +584,6 @@ WriteBuffer(Buffer buffer)
593584

594585
bufHdr=&BufferDescriptors[buffer-1];
595586

596-
SharedBufferChanged= true;
597-
598587
LWLockAcquire(BufMgrLock,LW_EXCLUSIVE);
599588
Assert(bufHdr->refcount>0);
600589

@@ -623,8 +612,6 @@ WriteNoReleaseBuffer(Buffer buffer)
623612

624613
bufHdr=&BufferDescriptors[buffer-1];
625614

626-
SharedBufferChanged= true;
627-
628615
LWLockAcquire(BufMgrLock,LW_EXCLUSIVE);
629616
Assert(bufHdr->refcount>0);
630617

@@ -1901,12 +1888,9 @@ _bm_die(Oid dbId, Oid relId, int blkNo, int bufNo,
19011888
*
19021889
*Mark a buffer dirty when we have updated tuple commit-status bits in it.
19031890
*
1904-
* This is similar to WriteNoReleaseBuffer, except that we do not set
1905-
* SharedBufferChanged or BufferDirtiedByMe, because we have not made a
1891+
* This is similar to WriteNoReleaseBuffer, except that we have not made a
19061892
* critical change that has to be flushed to disk before xact commit --- the
1907-
* status-bit update could be redone by someone else just as easily. The
1908-
* buffer will be marked dirty, but it will not be written to disk until
1909-
* there is another reason to write it.
1893+
* status-bit update could be redone by someone else just as easily.
19101894
*
19111895
* This routine might get called many times on the same page, if we are making
19121896
* the first scan after commit of an xact that added/deleted many tuples.

‎src/include/storage/buf_internals.h‎

Lines changed: 1 addition & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
88
* Portions Copyright (c) 1994, Regents of the University of California
99
*
10-
* $Id: buf_internals.h,v 1.54 2001/11/05 17:46:35 momjian Exp $
10+
* $Id: buf_internals.h,v 1.55 2002/06/15 19:55:38 momjian Exp $
1111
*
1212
*-------------------------------------------------------------------------
1313
*/
@@ -170,9 +170,6 @@ extern bool BufTableInsert(BufferDesc *buf);
170170
/* bufmgr.c */
171171
externBufferDesc*BufferDescriptors;
172172
externbits8*BufferLocks;
173-
externBufferTag*BufferTagLastDirtied;
174-
externLockRelId*BufferRelidLastDirtied;
175-
externbool*BufferDirtiedByMe;
176173

177174
/* localbuf.c */
178175
externBufferDesc*LocalBufferDescriptors;

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