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Rearrange vacuum-related bits in PGPROC as a bitmask, to better support

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having several of them.  Add two more flags: whether the process is
executing an ANALYZE, and whether a vacuum is for Xid wraparound (which
is obviously only set by autovacuum).

Sneakily move the worker's recently-acquired PostAuthDelay to a more useful
place.
This commit is contained in:
Alvaro Herrera
2007-10-24 20:55:36 +00:00
parent 3ef18797b8
commit 745c1b2c2a
7 changed files with 97 additions and 41 deletions
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16
src/backend/commands/analyze.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/analyze.c,v 1.109 2007/09/24 03:12:23 tgl Exp $
* $PostgreSQL: pgsql/src/backend/commands/analyze.c,v 1.110 2007/10/24 20:55:36 alvherre Exp $
*
*-------------------------------------------------------------------------
*/
@ -31,6 +31,7 @@
#include "parser/parse_relation.h"
#include "pgstat.h"
#include "postmaster/autovacuum.h"
#include "storage/proc.h"
#include "utils/acl.h"
#include "utils/datum.h"
#include "utils/lsyscache.h"
@ -201,6 +202,11 @@ analyze_rel(Oid relid, VacuumStmt *vacstmt,
return;
}
/* let others know what I'm doing */
LWLockAcquire(ProcArrayLock, LW_EXCLUSIVE);
MyProc->vacuumFlags |= PROC_IN_ANALYZE;
LWLockRelease(ProcArrayLock);
/* measure elapsed time iff autovacuum logging requires it */
if (IsAutoVacuumWorkerProcess() && Log_autovacuum_min_duration >= 0)
{
@ -484,6 +490,14 @@ analyze_rel(Oid relid, VacuumStmt *vacstmt,
RelationGetRelationName(onerel),
pg_rusage_show(&ru0))));
}
/*
* Reset my PGPROC flag. Note: we need this here, and not in vacuum_rel,
* because the vacuum flag is cleared by the end-of-xact code.
*/
LWLockAcquire(ProcArrayLock, LW_EXCLUSIVE);
MyProc->vacuumFlags &= ~PROC_IN_ANALYZE;
LWLockRelease(ProcArrayLock);
}
/*