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| author | Robert Haas <rhaas@postgresql.org> | 2017-03-08 12:05:43 -0500 |
|---|---|---|
| committer | Robert Haas <rhaas@postgresql.org> | 2017-03-08 12:05:43 -0500 |
| commit | f35742ccb7aa53ee3ed8416bbb378b0c3eeb6bb9 (patch) | |
| tree | 66c88951dd3b1546159869072e8ff3e3b506568b /src/include/executor/nodeBitmapHeapscan.h | |
| parent | 4eafdcc27608dfb8a3afa3155d6ae07f66179782 (diff) | |
| download | postgresql-f35742ccb7aa53ee3ed8416bbb378b0c3eeb6bb9.tar.gz postgresql-f35742ccb7aa53ee3ed8416bbb378b0c3eeb6bb9.zip | |
Support parallel bitmap heap scans.
The index is scanned by a single process, but then all cooperating
processes can iterate jointly over the resulting set of heap blocks.
In the future, we might also want to support using a parallel bitmap
index scan to set up for a parallel bitmap heap scan, but that's a
job for another day.
Dilip Kumar, with some corrections and cosmetic changes by me. The
larger patch set of which this is a part has been reviewed and tested
by (at least) Andres Freund, Amit Khandekar, Tushar Ahuja, Rafia
Sabih, Haribabu Kommi, Thomas Munro, and me.
Discussion: http://postgr.es/m/CAFiTN-uc4=0WxRGfCzs-xfkMYcSEWUC-Fon6thkJGjkh9i=13A@mail.gmail.com
Diffstat (limited to 'src/include/executor/nodeBitmapHeapscan.h')
| -rw-r--r-- | src/include/executor/nodeBitmapHeapscan.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/include/executor/nodeBitmapHeapscan.h b/src/include/executor/nodeBitmapHeapscan.h index d7659b94e61..465c58e6ee5 100644 --- a/src/include/executor/nodeBitmapHeapscan.h +++ b/src/include/executor/nodeBitmapHeapscan.h @@ -15,10 +15,17 @@ #define NODEBITMAPHEAPSCAN_H #include "nodes/execnodes.h" +#include "access/parallel.h" extern BitmapHeapScanState *ExecInitBitmapHeapScan(BitmapHeapScan *node, EState *estate, int eflags); extern TupleTableSlot *ExecBitmapHeapScan(BitmapHeapScanState *node); extern void ExecEndBitmapHeapScan(BitmapHeapScanState *node); extern void ExecReScanBitmapHeapScan(BitmapHeapScanState *node); +extern void ExecBitmapHeapEstimate(BitmapHeapScanState *node, + ParallelContext *pcxt); +extern void ExecBitmapHeapInitializeDSM(BitmapHeapScanState *node, + ParallelContext *pcxt); +extern void ExecBitmapHeapInitializeWorker(BitmapHeapScanState *node, + shm_toc *toc); #endif /* NODEBITMAPHEAPSCAN_H */ |