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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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4
src/backend/commands/prepare.c
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@ -10,7 +10,7 @@
* Copyright (c) 2002-2006, PostgreSQL Global Development Group
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/prepare.c,v 1.52 2006/04/25 14:11:54 momjian Exp $
* $PostgreSQL: pgsql/src/backend/commands/prepare.c,v 1.53 2006/06/20 22:51:59 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -373,7 +373,7 @@ StorePreparedStatement(const char *stmt_name,
entry->plan_list = plan_list;
entry->argtype_list = argtype_list;
entry->context = entrycxt;
entry->prepare_time = GetCurrentTimestamp();
entry->prepare_time = GetCurrentStatementStartTimestamp();
entry->from_sql = from_sql;
MemoryContextSwitchTo(oldcxt);