database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-29 10:41:53 +03:00
Code Activity

Invent ResourceOwner mechanism as per my recent proposal, and use it to

Browse Source 
keep track of portal-related resources separately from transaction-related
resources.  This allows cursors to work in a somewhat sane fashion with
nested transactions.  For now, cursor behavior is non-subtransactional,
that is a cursor's state does not roll back if you abort a subtransaction
that fetched from the cursor.  We might want to change that later.
This commit is contained in:
Tom Lane
2004-07-17 03:32:14 +00:00
parent f4c069ca8f
commit fe548629c5
41 changed files with 2086 additions and 1192 deletions
Download Patch File Download Diff File Expand all files Collapse all files

50
src/backend/bootstrap/bootstrap.c
View File

@ -8,7 +8,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/bootstrap/bootstrap.c,v 1.186 2004/07/11 00:18:43 momjian Exp $
* $PostgreSQL: pgsql/src/backend/bootstrap/bootstrap.c,v 1.187 2004/07/17 03:28:37 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -54,7 +54,6 @@ static void usage(void);
static void bootstrap_signals(void);
static hashnode *AddStr(char *str, int strlength, int mderef);
static Form_pg_attribute AllocateAttribute(void);
static bool BootstrapAlreadySeen(Oid id);
static int CompHash(char *str, int len);
static hashnode *FindStr(char *str, int length, hashnode *mderef);
static Oid gettype(char *type);
@ -880,34 +879,6 @@ InsertOneNull(int i)
Blanks[i] = 'n';
}
#define MORE_THAN_THE_NUMBER_OF_CATALOGS 256
static bool
BootstrapAlreadySeen(Oid id)
{
static Oid seenArray[MORE_THAN_THE_NUMBER_OF_CATALOGS];
static int nseen = 0;
bool seenthis;
int i;
seenthis = false;
for (i = 0; i < nseen; i++)
{
if (seenArray[i] == id)
{
seenthis = true;
break;
}
}
if (!seenthis)
{
seenArray[nseen] = id;
nseen++;
}
return seenthis;
}
/* ----------------
* cleanup
* ----------------
@ -1270,25 +1241,6 @@ build_indices(void)
* index, but in bootstrap mode it will not.
*/
/*
* All of the rest of this routine is needed only because in
* bootstrap processing we don't increment xact id's. The normal
* DefineIndex code replaces a pg_class tuple with updated info
* including the relhasindex flag (which we need to have updated).
* Unfortunately, there are always two indices defined on each
* catalog causing us to update the same pg_class tuple twice for
* each catalog getting an index during bootstrap resulting in the
* ghost tuple problem (see heap_update). To get around this we
* change the relhasindex field ourselves in this routine keeping
* track of what catalogs we already changed so that we don't
* modify those tuples twice. The normal mechanism for updating
* pg_class is disabled during bootstrap.
*
* -mer
*/
if (!BootstrapAlreadySeen(RelationGetRelid(heap)))
UpdateStats(RelationGetRelid(heap), 0);
/* XXX Probably we ought to close the heap and index here? */
}
}