database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-26 12:21:12 +03:00
Code Activity

Allow executor nodes to change their ExecProcNode function.

Browse Source 
In order for executor nodes to be able to change their ExecProcNode function
after ExecInitNode() has finished, provide ExecSetExecProcNode().  This allows
any wrappers functions that only execProcnode.c knows about to be reinstalled.
The motivation for wanting to change ExecProcNode after ExecInitNode() has
finished is that it is not known until later whether parallel query is
available, so if a parallel variant is to be installed then ExecInitNode()
is too soon to decide.

Author: Thomas Munro
Reviewed-By: Andres Freund
Discussion: https://postgr.es/m/CAEepm=09rr65VN+cAV5FgyM_z=D77Xy8Fuc9CDDDYbq3pQUezg@mail.gmail.com
This commit is contained in:
Andres Freund
2017-12-13 15:47:01 -08:00
parent dbb3d6f010
commit 538d114f6d
2 changed files with 23 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
src/include/executor/executor.h
View File

@ -219,6 +219,7 @@ extern void EvalPlanQualEnd(EPQState *epqstate);
* functions in execProcnode.c
*/
extern PlanState *ExecInitNode(Plan *node, EState *estate, int eflags);
extern void ExecSetExecProcNode(PlanState *node, ExecProcNodeMtd function);
extern Node *MultiExecProcNode(PlanState *node);
extern void ExecEndNode(PlanState *node);
extern bool ExecShutdownNode(PlanState *node);