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On Windows, use QueryPerformanceCounter instead of gettimeofday for

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EXPLAIN ANALYZE instrumentation.  Magnus Hagander
This commit is contained in:
Tom Lane
2005-03-20 22:27:52 +00:00
parent 354049c709
commit 9e0dd84596
3 changed files with 72 additions and 30 deletions
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26
src/backend/commands/explain.c
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1994-5, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/explain.c,v 1.129 2004/12/31 21:59:41 pgsql Exp $
* $PostgreSQL: pgsql/src/backend/commands/explain.c,v 1.130 2005/03/20 22:27:51 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -46,7 +46,7 @@ typedef struct ExplainState
static void ExplainOneQuery(Query *query, ExplainStmt *stmt,
TupOutputState *tstate);
static double elapsed_time(struct timeval * starttime);
static double elapsed_time(instr_time * starttime);
static void explain_outNode(StringInfo str,
Plan *plan, PlanState *planstate,
Plan *outer_plan,
@ -212,12 +212,12 @@ void
ExplainOnePlan(QueryDesc *queryDesc, ExplainStmt *stmt,
TupOutputState *tstate)
{
struct timeval starttime;
instr_time starttime;
double totaltime = 0;
ExplainState *es;
StringInfo str;
gettimeofday(&starttime, NULL);
INSTR_TIME_SET_CURRENT(starttime);
/* If analyzing, we need to cope with queued triggers */
if (stmt->analyze)
@ -275,7 +275,7 @@ ExplainOnePlan(QueryDesc *queryDesc, ExplainStmt *stmt,
* Close down the query and free resources; also run any queued
* AFTER triggers. Include time for this in the total runtime.
*/
gettimeofday(&starttime, NULL);
INSTR_TIME_SET_CURRENT(starttime);
ExecutorEnd(queryDesc);
@ -303,14 +303,15 @@ ExplainOnePlan(QueryDesc *queryDesc, ExplainStmt *stmt,
pfree(es);
}
/* Compute elapsed time in seconds since given gettimeofday() timestamp */
/* Compute elapsed time in seconds since given timestamp */
static double
elapsed_time(struct timeval * starttime)
elapsed_time(instr_time * starttime)
{
struct timeval endtime;
instr_time endtime;
gettimeofday(&endtime, NULL);
INSTR_TIME_SET_CURRENT(endtime);
#ifndef WIN32
endtime.tv_sec -= starttime->tv_sec;
endtime.tv_usec -= starttime->tv_usec;
while (endtime.tv_usec < 0)
@ -318,8 +319,11 @@ elapsed_time(struct timeval * starttime)
endtime.tv_usec += 1000000;
endtime.tv_sec--;
}
return (double) endtime.tv_sec +
(double) endtime.tv_usec / 1000000.0;
#else /* WIN32 */
endtime.QuadPart -= starttime->QuadPart;
#endif
return INSTR_TIME_GET_DOUBLE(endtime);
}
/*