Commit6f7d02a

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instr_time.h: add INSTR_TIME_SET_CURRENT_LAZY

Sets the timestamp to current if not already set. Will acquire morecallers momentarily.Author: Fabien CoelhoDiscussion:https://postgr.es/m/alpine.DEB.2.21.1808111104320.1705@lancre

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+11

-7

lines changed

+11

-7

lines changed

Lines changed: 3 additions & 7 deletions

Original file line number	Diff line number	Diff line change
`@@ -62,13 +62,9 @@ InstrInit(Instrumentation *instr, int instrument_options)`
`62`	`62`	`void`
`63`	`63`	`InstrStartNode(Instrumentation*instr)`
`64`	`64`	`{`
`65`		`-if (instr->need_timer)`
`66`		`-{`
`67`		`-if (INSTR_TIME_IS_ZERO(instr->starttime))`
`68`		`-INSTR_TIME_SET_CURRENT(instr->starttime);`
`69`		`-else`
`70`		`-elog(ERROR,"InstrStartNode called twice in a row");`
`71`		`-}`
	`65`	`+if (instr->need_timer&&`
	`66`	`+INSTR_TIME_SET_CURRENT_LAZY(instr->starttime))`
	`67`	`+elog(ERROR,"InstrStartNode called twice in a row");`
`72`	`68`
`73`	`69`	`/* save buffer usage totals at node entry, if needed */`
`74`	`70`	`if (instr->need_bufusage)`

Lines changed: 8 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -20,6 +20,9 @@`
`20`	`20`	`*`
`21`	`21`	`* INSTR_TIME_SET_CURRENT(t)set t to current time`
`22`	`22`	`*`
	`23`	`+ * INSTR_TIME_SET_CURRENT_LAZY(t)set t to current time if t is zero,`
	`24`	`+ *evaluates to whether t changed`
	`25`	`+ *`
`23`	`26`	`* INSTR_TIME_ADD(x, y)x += y`
`24`	`27`	`*`
`25`	`28`	`* INSTR_TIME_SUBTRACT(x, y)x -= y`
`@@ -245,4 +248,9 @@ GetTimerFrequency(void)`
`245`	`248`
`246`	`249`	`#endif/* WIN32 */`
`247`	`250`
	`251`	`+/* same macro on all platforms */`
	`252`	`+`
	`253`	`+#defineINSTR_TIME_SET_CURRENT_LAZY(t) \`
	`254`	`+(INSTR_TIME_IS_ZERO(t) ? INSTR_TIME_SET_CURRENT(t), true : false)`
	`255`	`+`
`248`	`256`	`#endif/* INSTR_TIME_H */`

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