database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-13 07:41:39 +03:00
Code Activity

Remove pg_plan_queries()'s now-useless needSnapshot parameter. It's useless

Browse Source 
in 8.3, too, but I'm not back-patching this change since it would break any
extension modules that might be calling that function.
This commit is contained in:
Tom Lane
2008-12-13 02:29:22 +00:00
parent c98a923786
commit b69bde7749
5 changed files with 15 additions and 37 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
src/backend/tcop/postgres.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/tcop/postgres.c,v 1.561 2008/12/13 02:00:19 tgl Exp $
* $PostgreSQL: pgsql/src/backend/tcop/postgres.c,v 1.562 2008/12/13 02:29:21 tgl Exp $
*
* NOTES
* this is the "main" module of the postgres backend and
@ -732,24 +732,14 @@ pg_plan_query(Query *querytree, int cursorOptions, ParamListInfo boundParams)
/*
* Generate plans for a list of already-rewritten queries.
*
* If needSnapshot is TRUE, we haven't yet set a snapshot for the current
* query. A snapshot must be set before invoking the planner, since it
* might try to evaluate user-defined functions. But we must not set a
* snapshot if the list contains only utility statements, because some
* utility statements depend on not having frozen the snapshot yet.
* (We assume that such statements cannot appear together with plannable
* statements in the rewriter's output.)
*
* Normal optimizable statements generate PlannedStmt entries in the result
* list. Utility statements are simply represented by their statement nodes.
*/
List *
pg_plan_queries(List *querytrees, int cursorOptions, ParamListInfo boundParams,
bool needSnapshot)
pg_plan_queries(List *querytrees, int cursorOptions, ParamListInfo boundParams)
{
List *stmt_list = NIL;
ListCell *query_list;
bool snapshot_set = false;
foreach(query_list, querytrees)
{
@ -763,22 +753,12 @@ pg_plan_queries(List *querytrees, int cursorOptions, ParamListInfo boundParams,
}
else
{
if (needSnapshot && !snapshot_set)
{
PushActiveSnapshot(GetTransactionSnapshot());
snapshot_set = true;
}
stmt = (Node *) pg_plan_query(query, cursorOptions,
boundParams);
stmt = (Node *) pg_plan_query(query, cursorOptions, boundParams);
}
stmt_list = lappend(stmt_list, stmt);
}
if (snapshot_set)
PopActiveSnapshot();
return stmt_list;
}
@ -937,7 +917,7 @@ exec_simple_query(const char *query_string)
querytree_list = pg_analyze_and_rewrite(parsetree, query_string,
NULL, 0);
plantree_list = pg_plan_queries(querytree_list, 0, NULL, false);
plantree_list = pg_plan_queries(querytree_list, 0, NULL);
/* Done with the snapshot used for parsing/planning */
if (snapshot_set)
@ -1276,7 +1256,7 @@ exec_parse_message(const char *query_string, /* string to execute */
}
else
{
stmt_list = pg_plan_queries(querytree_list, 0, NULL, false);
stmt_list = pg_plan_queries(querytree_list, 0, NULL);
fully_planned = true;
}
@ -1725,7 +1705,7 @@ exec_bind_message(StringInfo input_message)
*/
oldContext = MemoryContextSwitchTo(PortalGetHeapMemory(portal));
query_list = copyObject(cplan->stmt_list);
plan_list = pg_plan_queries(query_list, 0, params, false);
plan_list = pg_plan_queries(query_list, 0, params);
MemoryContextSwitchTo(oldContext);
/* We no longer need the cached plan refcount ... */