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Use an always-there test, not an Assert, to check for overrun of

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the held_lwlocks[] array.  Per Qingqing Zhou.
This commit is contained in:
Tom Lane 2005-04-08 03:43:54 +00:00
parent eb4b7a0b77
commit e794dfa511
1 changed files with 5 additions and 3 deletions
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8
src/backend/storage/lmgr/lwlock.c
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@ -15,7 +15,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/storage/lmgr/lwlock.c,v 1.25 2004/12/31 22:01:05 pgsql Exp $
* $PostgreSQL: pgsql/src/backend/storage/lmgr/lwlock.c,v 1.26 2005/04/08 03:43:54 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -328,7 +328,8 @@ LWLockAcquire(LWLockId lockid, LWLockMode mode)
SpinLockRelease_NoHoldoff(&lock->mutex);
/* Add lock to list of locks held by this backend */
Assert(num_held_lwlocks < MAX_SIMUL_LWLOCKS);
if (num_held_lwlocks >= MAX_SIMUL_LWLOCKS)
elog(ERROR, "too many LWLocks taken");
held_lwlocks[num_held_lwlocks++] = lockid;
/*
@ -397,7 +398,8 @@ LWLockConditionalAcquire(LWLockId lockid, LWLockMode mode)
else
{
/* Add lock to list of locks held by this backend */
Assert(num_held_lwlocks < MAX_SIMUL_LWLOCKS);
if (num_held_lwlocks >= MAX_SIMUL_LWLOCKS)
elog(ERROR, "too many LWLocks taken");
held_lwlocks[num_held_lwlocks++] = lockid;
}