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First phase of memory management rewrite (see backend/utils/mmgr/README

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for details).  It doesn't really do that much yet, since there are no
short-term memory contexts in the executor, but the infrastructure is
in place and long-term contexts are handled reasonably.  A few long-
standing bugs have been fixed, such as 'VACUUM; anything' in a single
query string crashing.  Also, out-of-memory is now considered a
recoverable ERROR, not FATAL.
Eliminate a large amount of crufty, now-dead code in and around
memory management.
Fix problem with holding off SIGTRAP, SIGSEGV, etc in postmaster and
backend startup.
This commit is contained in:
Tom Lane
2000-06-28 03:33:33 +00:00
parent b601c8d882
commit 1aebc3618a
74 changed files with 2325 additions and 3296 deletions
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39
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 1.69 2000/06/08 22:37:01 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/trigger.c,v 1.70 2000/06/28 03:31:28 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -1029,8 +1029,8 @@ ltrmark:;
* end.
* ----------
*/
static GlobalMemory deftrig_gcxt = NULL;
static GlobalMemory deftrig_cxt = NULL;
static MemoryContext deftrig_gcxt = NULL;
static MemoryContext deftrig_cxt = NULL;
/* ----------
* Global data that tells which triggers are actually in
@ -1104,7 +1104,7 @@ deferredTriggerCheckState(Oid tgoid, int32 itemstate)
* as the current and return that.
* ----------
*/
oldcxt = MemoryContextSwitchTo((MemoryContext) deftrig_cxt);
oldcxt = MemoryContextSwitchTo(deftrig_cxt);
trigstate = (DeferredTriggerStatus)
palloc(sizeof(DeferredTriggerStatusData));
@ -1366,7 +1366,12 @@ deferredTriggerInvokeEvents(bool immediate_only)
int
DeferredTriggerInit(void)
{
deftrig_gcxt = CreateGlobalMemory("DeferredTriggerSession");
deftrig_gcxt = AllocSetContextCreate(TopMemoryContext,
"DeferredTriggerSession",
ALLOCSET_DEFAULT_MINSIZE,
ALLOCSET_DEFAULT_INITSIZE,
ALLOCSET_DEFAULT_MAXSIZE);
return 0;
}
@ -1395,8 +1400,12 @@ DeferredTriggerBeginXact(void)
* from the per session context to here.
* ----------
*/
deftrig_cxt = CreateGlobalMemory("DeferredTriggerXact");
oldcxt = MemoryContextSwitchTo((MemoryContext) deftrig_cxt);
deftrig_cxt = AllocSetContextCreate(TopTransactionContext,
"DeferredTriggerXact",
ALLOCSET_DEFAULT_MINSIZE,
ALLOCSET_DEFAULT_INITSIZE,
ALLOCSET_DEFAULT_MAXSIZE);
oldcxt = MemoryContextSwitchTo(deftrig_cxt);
deftrig_all_isset = deftrig_dfl_all_isset;
deftrig_all_isdeferred = deftrig_dfl_all_isdeferred;
@ -1461,7 +1470,7 @@ DeferredTriggerEndXact(void)
deferredTriggerInvokeEvents(false);
GlobalMemoryDestroy(deftrig_cxt);
MemoryContextDelete(deftrig_cxt);
deftrig_cxt = NULL;
}
@ -1484,7 +1493,7 @@ DeferredTriggerAbortXact(void)
if (deftrig_cxt == NULL)
return;
GlobalMemoryDestroy(deftrig_cxt);
MemoryContextDelete(deftrig_cxt);
deftrig_cxt = NULL;
}
@ -1521,7 +1530,7 @@ DeferredTriggerSetState(ConstraintsSetStmt *stmt)
* ... outside of a transaction block
* ----------
*/
oldcxt = MemoryContextSwitchTo((MemoryContext) deftrig_gcxt);
oldcxt = MemoryContextSwitchTo(deftrig_gcxt);
/* ----------
* Drop all information about individual trigger states per
@ -1555,7 +1564,7 @@ DeferredTriggerSetState(ConstraintsSetStmt *stmt)
* ... inside of a transaction block
* ----------
*/
oldcxt = MemoryContextSwitchTo((MemoryContext) deftrig_cxt);
oldcxt = MemoryContextSwitchTo(deftrig_cxt);
/* ----------
* Drop all information about individual trigger states per
@ -1701,7 +1710,7 @@ DeferredTriggerSetState(ConstraintsSetStmt *stmt)
* states of individual triggers on session level.
* ----------
*/
oldcxt = MemoryContextSwitchTo((MemoryContext) deftrig_gcxt);
oldcxt = MemoryContextSwitchTo(deftrig_gcxt);
foreach(l, loid)
{
@ -1739,7 +1748,7 @@ DeferredTriggerSetState(ConstraintsSetStmt *stmt)
* states of individual triggers on transaction level.
* ----------
*/
oldcxt = MemoryContextSwitchTo((MemoryContext) deftrig_cxt);
oldcxt = MemoryContextSwitchTo(deftrig_cxt);
foreach(l, loid)
{
@ -1827,7 +1836,7 @@ DeferredTriggerSaveEvent(Relation rel, int event,
* Create a new event
* ----------
*/
oldcxt = MemoryContextSwitchTo((MemoryContext) deftrig_cxt);
oldcxt = MemoryContextSwitchTo(deftrig_cxt);
ntriggers = rel->trigdesc->n_after_row[event];
triggers = rel->trigdesc->tg_after_row[event];
@ -2022,7 +2031,7 @@ DeferredTriggerSaveEvent(Relation rel, int event,
* Anything's fine up to here. Add the new event to the queue.
* ----------
*/
oldcxt = MemoryContextSwitchTo((MemoryContext) deftrig_cxt);
oldcxt = MemoryContextSwitchTo(deftrig_cxt);
deferredTriggerAddEvent(new_event);
MemoryContextSwitchTo(oldcxt);