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| author | Robert Haas <rhaas@postgresql.org> | 2017-02-26 13:36:49 +0530 |
|---|---|---|
| committer | Robert Haas <rhaas@postgresql.org> | 2017-02-26 13:41:12 +0530 |
| commit | a315b967cc1bd43ecf3c10ea48b44a4fb0ff8d45 (patch) | |
| tree | 47e76aff9009a58b6742b0b38fbd31dd64b26986 /src/include/foreign | |
| parent | 285ca26132abdd0a1adc11a21789f103c4e3f6d8 (diff) | |
| download | postgresql-a315b967cc1bd43ecf3c10ea48b44a4fb0ff8d45.tar.gz | |
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
Diffstat (limited to 'src/include/foreign')
| -rw-r--r-- | src/include/foreign/fdwapi.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/include/foreign/fdwapi.h b/src/include/foreign/fdwapi.h index 523d415575..6ca44f734f 100644 --- a/src/include/foreign/fdwapi.h +++ b/src/include/foreign/fdwapi.h @@ -151,6 +151,7 @@ typedef void (*InitializeDSMForeignScan_function) (ForeignScanState *node, typedef void (*InitializeWorkerForeignScan_function) (ForeignScanState *node, shm_toc *toc, void *coordinate); +typedef void (*ShutdownForeignScan_function) (ForeignScanState *node); typedef bool (*IsForeignScanParallelSafe_function) (PlannerInfo *root, RelOptInfo *rel, RangeTblEntry *rte); @@ -224,6 +225,7 @@ typedef struct FdwRoutine EstimateDSMForeignScan_function EstimateDSMForeignScan; InitializeDSMForeignScan_function InitializeDSMForeignScan; InitializeWorkerForeignScan_function InitializeWorkerForeignScan; + ShutdownForeignScan_function ShutdownForeignScan; } FdwRoutine; |