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Remove redundant gettimeofday() calls to the extent practical without

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changing semantics too much.  statement_timestamp is now set immediately
upon receipt of a client command message, and the various places that used
to do their own gettimeofday() calls to mark command startup are referenced
to that instead.  I have also made stats_command_string use that same
value for pg_stat_activity.query_start for both the command itself and
its eventual replacement by <IDLE> or <idle in transaction>.  There was
some debate about that, but no argument that seemed convincing enough to
justify an extra gettimeofday() call.
This commit is contained in:
Tom Lane
2006-06-20 22:52:00 +00:00
parent 47a37aeebd
commit 27c3e3de09
11 changed files with 269 additions and 226 deletions
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9
src/backend/utils/error/elog.c
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@ -42,7 +42,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/error/elog.c,v 1.169 2006/03/05 15:58:46 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/error/elog.c,v 1.170 2006/06/20 22:52:00 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -1408,7 +1408,7 @@ log_line_prefix(StringInfo buf)
if (MyProcPort)
{
appendStringInfo(buf, "%lx.%x",
(long) (MyProcPort->session_start.tv_sec),
(long) (MyProcPort->session_start),
MyProcPid);
}
break;
@ -1440,7 +1440,7 @@ log_line_prefix(StringInfo buf)
strftime(strfbuf, sizeof(strfbuf),
/* leave room for milliseconds... */
/* Win32 timezone names are too long so don't print them. */
/* Win32 timezone names are too long so don't print them */
#ifndef WIN32
"%Y-%m-%d %H:%M:%S %Z",
#else
@ -1474,12 +1474,11 @@ log_line_prefix(StringInfo buf)
case 's':
if (MyProcPort)
{
time_t stamp_time = MyProcPort->session_start.tv_sec;
char strfbuf[128];
strftime(strfbuf, sizeof(strfbuf),
"%Y-%m-%d %H:%M:%S %Z",
localtime(&stamp_time));
localtime(&MyProcPort->session_start));
appendStringInfoString(buf, strfbuf);
}
break;