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Remove AMI_OVERRIDE tests from tqual.c routines; they aren't necessary

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and just slow down normal operations (only fractionally, but a cycle saved
is a cycle earned).  Improve documentation of AMI_OVERRIDE behavior.
This commit is contained in:
Tom Lane
2002-05-25 20:00:12 +00:00
parent 29737d83d9
commit 4d567013cf
5 changed files with 41 additions and 51 deletions
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9
src/backend/access/transam/varsup.c
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@@ -6,7 +6,7 @@
* Copyright (c) 2000, PostgreSQL Global Development Group
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/transam/varsup.c,v 1.48 2001/10/28 06:25:42 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/access/transam/varsup.c,v 1.49 2002/05/25 20:00:11 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -93,13 +93,6 @@ ReadNewTransactionId(void)
{
TransactionId xid;
/*
* During bootstrap initialization, we return the special bootstrap
* transaction id.
*/
if (AMI_OVERRIDE)
return BootstrapTransactionId;
LWLockAcquire(XidGenLock, LW_SHARED);
xid = ShmemVariableCache->nextXid;
LWLockRelease(XidGenLock);