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The following patch cleans up the deferred trigger mechanism. There is

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an unneeded memory context and some variables that are not used anymore.
It's pretty trivial and the regression tests pass fine.  There's no
change in functionality, only deletion of unused code.  I left an empty
function because maybe I'll need it for nested transactions.

Alvaro Herrera
This commit is contained in:
Bruce Momjian 2003-03-31 20:47:51 +00:00
parent 7cd30e1590
commit 50be3e5efe
1 changed files with 10 additions and 37 deletions
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47
src/backend/commands/trigger.c
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/trigger.c,v 1.146 2003/03/27 14:33:11 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/trigger.c,v 1.147 2003/03/31 20:47:51 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -15,6 +15,7 @@
#include "access/genam.h"
#include "access/heapam.h"
#include "access/xact.h"
#include "catalog/catalog.h"
#include "catalog/catname.h"
#include "catalog/dependency.h"
@ -1601,14 +1602,12 @@ ltrmark:;
*/
/* ----------
* Internal data to the deferred trigger mechanism is held
* during entire session in a global context created at startup and
* over statements/commands in a separate context which
* is created at transaction start and destroyed at transaction end.
* ----------
/*
* Internal data to the deferred trigger mechanism is held over
* statements/commands in a context which is created at transaction
* start and destroyed at transaction end.
*/
static MemoryContext deftrig_gcxt = NULL;
static MemoryContext deftrig_cxt = NULL;
/* ----------
@ -1616,8 +1615,6 @@ static MemoryContext deftrig_cxt = NULL;
* state IMMEDIATE or DEFERRED.
* ----------
*/
static List *deftrig_dfl_trigstates = NIL;
static bool deftrig_all_isset = false;
static bool deftrig_all_isdeferred = false;
static List *deftrig_trigstates;
@ -2017,11 +2014,8 @@ deferredTriggerInvokeEvents(bool immediate_only)
void
DeferredTriggerInit(void)
{
deftrig_gcxt = AllocSetContextCreate(TopMemoryContext,
"DeferredTriggerSession",
ALLOCSET_DEFAULT_MINSIZE,
ALLOCSET_DEFAULT_INITSIZE,
ALLOCSET_DEFAULT_MAXSIZE);
/* Nothing to do */
;
}
@ -2035,26 +2029,18 @@ DeferredTriggerInit(void)
void
DeferredTriggerBeginXact(void)
{
MemoryContext oldcxt;
List *l;
DeferredTriggerStatus dflstat;
DeferredTriggerStatus stat;
if (deftrig_cxt != NULL)
elog(ERROR,
"DeferredTriggerBeginXact() called while inside transaction");
/*
* Create the per transaction memory context and copy all states from
* the per session context to here.
* Create the per transaction memory context
*/
deftrig_cxt = AllocSetContextCreate(TopTransactionContext,
"DeferredTriggerXact",
ALLOCSET_DEFAULT_MINSIZE,
ALLOCSET_DEFAULT_INITSIZE,
ALLOCSET_DEFAULT_MAXSIZE);
oldcxt = MemoryContextSwitchTo(deftrig_cxt);
deftrig_all_isset = false;
/*
@ -2063,19 +2049,6 @@ DeferredTriggerBeginXact(void)
deftrig_all_isdeferred = false;
deftrig_trigstates = NIL;
foreach(l, deftrig_dfl_trigstates)
{
dflstat = (DeferredTriggerStatus) lfirst(l);
stat = (DeferredTriggerStatus)
palloc(sizeof(DeferredTriggerStatusData));
stat->dts_tgoid = dflstat->dts_tgoid;
stat->dts_tgisdeferred = dflstat->dts_tgisdeferred;
deftrig_trigstates = lappend(deftrig_trigstates, stat);
}
MemoryContextSwitchTo(oldcxt);
deftrig_events = NULL;
deftrig_event_tail = NULL;