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Lmgr cleanup, new locking modes for LLL.

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This commit is contained in:
Vadim B. Mikheev
1998-08-01 15:26:38 +00:00
parent 83d3626b1f
commit 0d78e8c112
8 changed files with 125 additions and 380 deletions
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12
src/backend/storage/buffer/bufmgr.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/storage/buffer/bufmgr.c,v 1.39 1998/07/13 16:34:49 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/storage/buffer/bufmgr.c,v 1.40 1998/08/01 15:26:12 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@ -114,18 +114,18 @@ RelationGetBufferWithBuffer(Relation relation,
Buffer buffer)
{
BufferDesc *bufHdr;
LockRelId lrelId;
if (BufferIsValid(buffer))
{
if (!BufferIsLocal(buffer))
{
LockRelId *lrelId = &(((LockInfo)(relation->lockInfo))->lockRelId);
bufHdr = &BufferDescriptors[buffer - 1];
lrelId = RelationGetLockRelId(relation);
SpinAcquire(BufMgrLock);
if (bufHdr->tag.blockNum == blockNumber &&
bufHdr->tag.relId.relId == lrelId.relId &&
bufHdr->tag.relId.dbId == lrelId.dbId)
bufHdr->tag.relId.relId == lrelId->relId &&
bufHdr->tag.relId.dbId == lrelId->dbId)
{
SpinRelease(BufMgrLock);
return (buffer);
@ -1282,7 +1282,7 @@ BufferGetRelation(Buffer buffer)
Assert(!BufferIsLocal(buffer)); /* not supported for local buffers */
/* XXX should be a critical section */
relid = LockRelIdGetRelationId(BufferDescriptors[buffer - 1].tag.relId);
relid = BufferDescriptors[buffer - 1].tag.relId.relId;
relation = RelationIdGetRelation(relid);
RelationDecrementReferenceCount(relation);