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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2007-03-13 00:33:44 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2007-03-13 00:33:44 +0000 |
| commit | b9527e984092e838790b543b014c0c2720ea4f11 (patch) | |
| tree | 60a6063280d446701e1b93e1149eaeb9ce13a128 /src/include/utils/resowner.h | |
| parent | f84308f1958313f6cd1644d74b6a8ff49a871f8d (diff) | |
| download | postgresql-b9527e984092e838790b543b014c0c2720ea4f11.tar.gz | |
First phase of plan-invalidation project: create a plan cache management
module and teach PREPARE and protocol-level prepared statements to use it.
In service of this, rearrange utility-statement processing so that parse
analysis does not assume table schemas can't change before execution for
utility statements (necessary because we don't attempt to re-acquire locks
for utility statements when reusing a stored plan). This requires some
refactoring of the ProcessUtility API, but it ends up cleaner anyway,
for instance we can get rid of the QueryContext global.
Still to do: fix up SPI and related code to use the plan cache; I'm tempted to
try to make SQL functions use it too. Also, there are at least some aspects
of system state that we want to ensure remain the same during a replan as in
the original processing; search_path certainly ought to behave that way for
instance, and perhaps there are others.
Diffstat (limited to 'src/include/utils/resowner.h')
| -rw-r--r-- | src/include/utils/resowner.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/include/utils/resowner.h b/src/include/utils/resowner.h index 663096a333..ea0d6a7406 100644 --- a/src/include/utils/resowner.h +++ b/src/include/utils/resowner.h @@ -12,7 +12,7 @@ * Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/utils/resowner.h,v 1.10 2007/01/05 22:19:59 momjian Exp $ + * $PostgreSQL: pgsql/src/include/utils/resowner.h,v 1.11 2007/03/13 00:33:43 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -21,6 +21,7 @@ #include "storage/buf.h" #include "utils/catcache.h" +#include "utils/plancache.h" /* @@ -106,6 +107,13 @@ extern void ResourceOwnerRememberRelationRef(ResourceOwner owner, extern void ResourceOwnerForgetRelationRef(ResourceOwner owner, Relation rel); +/* support for plancache refcount management */ +extern void ResourceOwnerEnlargePlanCacheRefs(ResourceOwner owner); +extern void ResourceOwnerRememberPlanCacheRef(ResourceOwner owner, + CachedPlan *plan); +extern void ResourceOwnerForgetPlanCacheRef(ResourceOwner owner, + CachedPlan *plan); + /* support for tupledesc refcount management */ extern void ResourceOwnerEnlargeTupleDescs(ResourceOwner owner); extern void ResourceOwnerRememberTupleDesc(ResourceOwner owner, |