database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-11-06 07:49:08 +03:00
Code Activity

Improve the plan cache invalidation mechanism to make it invalidate plans

Browse Source 
when user-defined functions used in a plan are modified.  Also invalidate
plans when schemas, operators, or operator classes are modified; but for these
cases we just invalidate everything rather than tracking exact dependencies,
since these types of objects seldom change in a production database.

Tom Lane; loosely based on a patch by Martin Pihlak.
This commit is contained in:
Tom Lane
2008-09-09 18:58:09 +00:00
parent c06629c72e
commit ee33b95d9c
18 changed files with 522 additions and 275 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
src/backend/optimizer/util/clauses.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/util/clauses.c,v 1.266 2008/08/28 23:09:46 tgl Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/util/clauses.c,v 1.267 2008/09/09 18:58:08 tgl Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@@ -50,6 +50,7 @@
typedef struct
{
ParamListInfo boundParams;
PlannerGlobal *glob;
List *active_fns;
Node *case_val;
bool estimate;
@@ -1890,9 +1891,15 @@ eval_const_expressions(PlannerInfo *root, Node *node)
eval_const_expressions_context context;
if (root)
{
context.boundParams = root->glob->boundParams; /* bound Params */
context.glob = root->glob; /* for inlined-function dependencies */
}
else
{
context.boundParams = NULL;
context.glob = NULL;
}
context.active_fns = NIL; /* nothing being recursively simplified */
context.case_val = NULL; /* no CASE being examined */
context.estimate = false; /* safe transformations only */
@@ -1921,6 +1928,8 @@ estimate_expression_value(PlannerInfo *root, Node *node)
eval_const_expressions_context context;
context.boundParams = root->glob->boundParams; /* bound Params */
/* we do not need to mark the plan as depending on inlined functions */
context.glob = NULL;
context.active_fns = NIL; /* nothing being recursively simplified */
context.case_val = NULL; /* no CASE being examined */
context.estimate = true; /* unsafe transformations OK */
@@ -3468,6 +3477,13 @@ inline_function(Oid funcid, Oid result_type, List *args,
MemoryContextDelete(mycxt);
/*
* Since there is now no trace of the function in the plan tree, we
* must explicitly record the plan's dependency on the function.
*/
if (context->glob)
record_plan_function_dependency(context->glob, funcid);
/*
* Recursively try to simplify the modified expression. Here we must add
* the current function to the context list of active functions.
@@ -3842,6 +3858,12 @@ inline_set_returning_function(PlannerInfo *root, Node *node)
error_context_stack = sqlerrcontext.previous;
ReleaseSysCache(func_tuple);
/*
* Since there is now no trace of the function in the plan tree, we
* must explicitly record the plan's dependency on the function.
*/
record_plan_function_dependency(root->glob, fexpr->funcid);
return querytree;
/* Here if func is not inlinable: release temp memory and return NULL */