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Try to save a kernel call in ResolveRecoveryConflictWithVirtualXIDs.

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If there's no work to be done, just exit quickly, before initialization.
This commit is contained in:
Robert Haas 2010-12-17 11:32:02 -05:00
parent 611fed3712
commit 8bd4b89e24
1 changed files with 4 additions and 0 deletions
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4
src/backend/storage/ipc/standby.c
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@ -193,6 +193,10 @@ ResolveRecoveryConflictWithVirtualXIDs(VirtualTransactionId *waitlist,
TimestampTz waitStart;
char *new_status;
/* Fast exit, to avoid a kernel call if there's no work to be done. */
if (!VirtualTransactionIdIsValid(*waitlist))
return;
waitStart = GetCurrentTimestamp();
new_status = NULL; /* we haven't changed the ps display */