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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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25
src/backend/utils/cache/relcache.c vendored
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/cache/relcache.c,v 1.103 2000/06/19 23:40:48 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/cache/relcache.c,v 1.104 2000/06/28 03:32:24 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -917,10 +917,10 @@ RelationBuildDesc(RelationBuildDescInfo buildinfo,
/* ----------------
* allocate storage for the relation descriptor,
* initialize relation->rd_rel and get the access method id.
* The storage is allocated in memory context CacheCxt.
* The storage is allocated in memory context CacheMemoryContext.
* ----------------
*/
oldcxt = MemoryContextSwitchTo((MemoryContext) CacheCxt);
oldcxt = MemoryContextSwitchTo(CacheMemoryContext);
relation = AllocateRelationDesc(oldrelation, natts, relp);
relam = relation->rd_rel->relam;
@ -1383,7 +1383,7 @@ RelationClearRelation(Relation relation, bool rebuildIt)
if (relation->rd_isnailed)
return;
oldcxt = MemoryContextSwitchTo((MemoryContext) CacheCxt);
oldcxt = MemoryContextSwitchTo(CacheMemoryContext);
/*
* Remove relation from hash tables
@ -1574,7 +1574,7 @@ RelationForgetRelation(Oid rid)
List *curr;
List *prev = NIL;
oldcxt = MemoryContextSwitchTo((MemoryContext) CacheCxt);
oldcxt = MemoryContextSwitchTo(CacheMemoryContext);
foreach(curr, newlyCreatedRelns)
{
@ -1731,10 +1731,7 @@ RelationRegisterRelation(Relation relation)
{
MemoryContext oldcxt;
oldcxt = MemoryContextSwitchTo((MemoryContext) CacheCxt);
if (oldcxt != (MemoryContext) CacheCxt)
elog(NOIND, "RelationRegisterRelation: WARNING: Context != CacheCxt");
oldcxt = MemoryContextSwitchTo(CacheMemoryContext);
RelationInitLockInfo(relation);
@ -1769,7 +1766,7 @@ RelationPurgeLocalRelation(bool xactCommitted)
if (newlyCreatedRelns == NULL)
return;
oldcxt = MemoryContextSwitchTo((MemoryContext) CacheCxt);
oldcxt = MemoryContextSwitchTo(CacheMemoryContext);
while (newlyCreatedRelns)
{
@ -1822,10 +1819,10 @@ RelationInitialize(void)
* switch to cache memory context
* ----------------
*/
if (!CacheCxt)
CacheCxt = CreateGlobalMemory("Cache");
if (!CacheMemoryContext)
CreateCacheMemoryContext();
oldcxt = MemoryContextSwitchTo((MemoryContext) CacheCxt);
oldcxt = MemoryContextSwitchTo(CacheMemoryContext);
/* ----------------
* create global caches
@ -2186,7 +2183,7 @@ RelationGetIndexList(Relation relation)
heap_close(indrel, AccessShareLock);
/* Now save a copy of the completed list in the relcache entry. */
oldcxt = MemoryContextSwitchTo((MemoryContext) CacheCxt);
oldcxt = MemoryContextSwitchTo(CacheMemoryContext);
relation->rd_indexlist = listCopy(result);
relation->rd_indexfound = true;
MemoryContextSwitchTo(oldcxt);