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instr_time.h: add INSTR_TIME_SET_CURRENT_LAZY

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Sets the timestamp to current if not already set.  Will acquire more
callers momentarily.

Author: Fabien Coelho
Discussion: https://postgr.es/m/alpine.DEB.2.21.1808111104320.1705@lancre
This commit is contained in:
Alvaro Herrera
2018-11-21 15:02:37 -03:00
parent 7306d5e920
commit 6f7d02aa60
2 changed files with 11 additions and 7 deletions
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10
src/backend/executor/instrument.c
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@ -62,13 +62,9 @@ InstrInit(Instrumentation *instr, int instrument_options)
void
InstrStartNode(Instrumentation *instr)
{
if (instr->need_timer)
{
if (INSTR_TIME_IS_ZERO(instr->starttime))
INSTR_TIME_SET_CURRENT(instr->starttime);
else
elog(ERROR, "InstrStartNode called twice in a row");
}
if (instr->need_timer &&
INSTR_TIME_SET_CURRENT_LAZY(instr->starttime))
elog(ERROR, "InstrStartNode called twice in a row");
/* save buffer usage totals at node entry, if needed */
if (instr->need_bufusage)