upstream/postgresql
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2026-02-03 20:40:14 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions
postgresql/src/include/executor/nodeForeignscan.h

34 lines
1.1 KiB
C
Raw Normal View History

Implement an API to let foreign-data wrappers actually be functional. This commit provides the core code and documentation needed. A contrib module test case will follow shortly. Shigeru Hanada, Jan Urbanski, Heikki Linnakangas
2011-02-20 00:17:18 -05:00
/*-------------------------------------------------------------------------
*
* nodeForeignscan.h
*
*
*
Update copyright via script for 2017
2017-01-03 13:48:53 -05:00
* Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
Implement an API to let foreign-data wrappers actually be functional. This commit provides the core code and documentation needed. A contrib module test case will follow shortly. Shigeru Hanada, Jan Urbanski, Heikki Linnakangas
2011-02-20 00:17:18 -05:00
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/executor/nodeForeignscan.h
*
*-------------------------------------------------------------------------
*/
#ifndef NODEFOREIGNSCAN_H
#define NODEFOREIGNSCAN_H
Allow parallel custom and foreign scans. This patch doesn't put the new infrastructure to use anywhere, and indeed it's not clear how it could ever be used for something like postgres_fdw which has to send an SQL query and wait for a reply, but there might be FDWs or custom scan providers that are CPU-bound, so let's give them a way to join club parallel. KaiGai Kohei, reviewed by me.
2016-02-03 12:46:18 -05:00
#include "access/parallel.h"
Implement an API to let foreign-data wrappers actually be functional. This commit provides the core code and documentation needed. A contrib module test case will follow shortly. Shigeru Hanada, Jan Urbanski, Heikki Linnakangas
2011-02-20 00:17:18 -05:00
#include "nodes/execnodes.h"
extern ForeignScanState *ExecInitForeignScan(ForeignScan *node, EState *estate, int eflags);
extern TupleTableSlot *ExecForeignScan(ForeignScanState *node);
extern void ExecEndForeignScan(ForeignScanState *node);
extern void ExecReScanForeignScan(ForeignScanState *node);
Allow parallel custom and foreign scans. This patch doesn't put the new infrastructure to use anywhere, and indeed it's not clear how it could ever be used for something like postgres_fdw which has to send an SQL query and wait for a reply, but there might be FDWs or custom scan providers that are CPU-bound, so let's give them a way to join club parallel. KaiGai Kohei, reviewed by me.
2016-02-03 12:46:18 -05:00
extern void ExecForeignScanEstimate(ForeignScanState *node,
pgindent run for 9.6
2016-06-09 18:02:36 -04:00
ParallelContext *pcxt);
Allow parallel custom and foreign scans. This patch doesn't put the new infrastructure to use anywhere, and indeed it's not clear how it could ever be used for something like postgres_fdw which has to send an SQL query and wait for a reply, but there might be FDWs or custom scan providers that are CPU-bound, so let's give them a way to join club parallel. KaiGai Kohei, reviewed by me.
2016-02-03 12:46:18 -05:00
extern void ExecForeignScanInitializeDSM(ForeignScanState *node,
pgindent run for 9.6
2016-06-09 18:02:36 -04:00
ParallelContext *pcxt);
Allow parallel custom and foreign scans. This patch doesn't put the new infrastructure to use anywhere, and indeed it's not clear how it could ever be used for something like postgres_fdw which has to send an SQL query and wait for a reply, but there might be FDWs or custom scan providers that are CPU-bound, so let's give them a way to join club parallel. KaiGai Kohei, reviewed by me.
2016-02-03 12:46:18 -05:00
extern void ExecForeignScanInitializeWorker(ForeignScanState *node,
pgindent run for 9.6
2016-06-09 18:02:36 -04:00
shm_toc *toc);
Allow custom and foreign scans to have shutdown callbacks. This is expected to be useful mostly when performing such scans in parallel, because in that case it allows (in combination with commit acf555bc53acb589b5a2827e65d655fa8c9adee0) nodes below a Gather to get control just before the DSM segment goes away. KaiGai Kohei, except that I rewrote the documentation. Reviewed by Claudio Freire. Discussion: http://postgr.es/m/CADyhKSXJK0jUJ8rWv4AmKDhsUh124_rEn39eqgfC5D8fu6xVuw@mail.gmail.com
2017-02-26 03:06:49 -05:00
extern void ExecShutdownForeignScan(ForeignScanState *node);
Allow parallel custom and foreign scans. This patch doesn't put the new infrastructure to use anywhere, and indeed it's not clear how it could ever be used for something like postgres_fdw which has to send an SQL query and wait for a reply, but there might be FDWs or custom scan providers that are CPU-bound, so let's give them a way to join club parallel. KaiGai Kohei, reviewed by me.
2016-02-03 12:46:18 -05:00
Implement an API to let foreign-data wrappers actually be functional. This commit provides the core code and documentation needed. A contrib module test case will follow shortly. Shigeru Hanada, Jan Urbanski, Heikki Linnakangas
2011-02-20 00:17:18 -05:00
#endif /* NODEFOREIGNSCAN_H */
Reference in a new issue Copy permalink