From 538d114f6d72cbc94122ab522e002e63359cff5b Mon Sep 17 00:00:00 2001
From: Andres Freund
Date: Wed, 13 Dec 2017 15:47:01 -0800
Subject: Allow executor nodes to change their ExecProcNode function.

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
---
 src/include/executor/executor.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src/include/executor/executor.h')

diff --git a/src/include/executor/executor.h b/src/include/executor/executor.h
index b5578f5855f..dea9216fd62 100644
--- a/src/include/executor/executor.h
+++ b/src/include/executor/executor.h
@@ -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);
-- 
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