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1. Vacuum is updated for MVCC.

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2. Much faster btree tuples deletion in the case when first on page
   index tuple is deleted (no movement to the left page(s)).
3. Remember blkno of new root page in BTPageOpaque of
   left/right siblings when root page is splitted.
This commit is contained in:
Vadim B. Mikheev
1999-03-28 20:32:42 +00:00
parent d4ed17842a
commit fdf6be80f9
16 changed files with 802 additions and 352 deletions
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29
src/backend/storage/buffer/bufmgr.c
View File

@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/storage/buffer/bufmgr.c,v 1.49 1999/02/21 03:49:21 scrappy Exp $
* $Header: /cvsroot/pgsql/src/backend/storage/buffer/bufmgr.c,v 1.50 1999/03/28 20:32:17 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@ -95,7 +95,7 @@ static BufferDesc *BufferAlloc(Relation reln, BlockNumber blockNum,
static int FlushBuffer(Buffer buffer, bool release);
static void BufferSync(void);
static int BufferReplace(BufferDesc *bufHdr, bool bufferLockHeld);
static void PrintBufferDescs(void);
void PrintBufferDescs(void);
/* not static but used by vacuum only ... */
int BlowawayRelationBuffers(Relation rel, BlockNumber block);
@ -1208,23 +1208,24 @@ int
BufferPoolCheckLeak()
{
int i;
int error = 0;
int result = 0;
for (i = 1; i <= NBuffers; i++)
{
if (BufferIsValid(i))
{
BufferDesc *buf = &(BufferDescriptors[i - 1]);
elog(NOTICE,
"buffer leak [%d] detected in BufferPoolCheckLeak()", i - 1);
error = 1;
"Buffer Leak: [%03d] (freeNext=%d, freePrev=%d, \
relname=%s, blockNum=%d, flags=0x%x, refcount=%d %d)",
i - 1, buf->freeNext, buf->freePrev,
buf->sb_relname, buf->tag.blockNum, buf->flags,
buf->refcount, PrivateRefCount[i - 1]);
result = 1;
}
}
if (error)
{
PrintBufferDescs();
return 1;
}
return 0;
return (result);
}
/* ------------------------------------------------
@ -1465,7 +1466,7 @@ DropBuffers(Oid dbid)
* use only.
* -----------------------------------------------------------------
*/
static void
void
PrintBufferDescs()
{
int i;
@ -1474,16 +1475,14 @@ PrintBufferDescs()
if (IsUnderPostmaster)
{
SpinAcquire(BufMgrLock);
#ifdef NOT_USED
for (i = 0; i < NBuffers; ++i, ++buf)
{
elog(NOTICE, "[%02d] (freeNext=%d, freePrev=%d, relname=%s, \
elog(DEBUG, "[%02d] (freeNext=%d, freePrev=%d, relname=%s, \
blockNum=%d, flags=0x%x, refcount=%d %d)",
i, buf->freeNext, buf->freePrev,
buf->sb_relname, buf->tag.blockNum, buf->flags,
buf->refcount, PrivateRefCount[i]);
}
#endif
SpinRelease(BufMgrLock);
}
else