From f35742ccb7aa53ee3ed8416bbb378b0c3eeb6bb9 Mon Sep 17 00:00:00 2001 From: Robert Haas Date: Wed, 8 Mar 2017 12:05:43 -0500 Subject: 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 --- src/include/executor/nodeBitmapHeapscan.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'src/include/executor/nodeBitmapHeapscan.h') 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 */ -- cgit v1.2.3