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Adjust input value to WaitEventSetWait() in ExecAppendAsyncEventWait().

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Adjust the number of events given to WaitEventSetWait() so that it
doesn't exceed the maximum number of events in the WaitEventSet given
to that function (set->nevents_space) in hopes of making the buildfarm
green.

Per valgrind failure report from Tom Lane and the buildfarm.

Author: Etsuro Fujita
Discussion: https://postgr.es/m/3411577.1617289776%40sss.pgh.pa.us
This commit is contained in:
Etsuro Fujita 2021-04-06 19:15:00 +09:00
parent 82ed7748b7
commit a8af856d32
1 changed files with 3 additions and 1 deletions
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4
src/backend/executor/nodeAppend.c
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@ -1001,6 +1001,7 @@ ExecAppendAsyncEventWait(AppendState *node)
long timeout = node->as_syncdone ? -1 : 0;
WaitEvent occurred_event[EVENT_BUFFER_SIZE];
int noccurred;
int nevents;
int i;
/* We should never be called when there are no valid async subplans. */
@ -1022,8 +1023,9 @@ ExecAppendAsyncEventWait(AppendState *node)
}
/* Wait for at least one event to occur. */
nevents = Min(node->as_nasyncplans + 1, EVENT_BUFFER_SIZE);
noccurred = WaitEventSetWait(node->as_eventset, timeout, occurred_event,
EVENT_BUFFER_SIZE, WAIT_EVENT_APPEND_READY);
nevents, WAIT_EVENT_APPEND_READY);
FreeWaitEventSet(node->as_eventset);
node->as_eventset = NULL;
if (noccurred == 0)