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/backend/nodes/copyfuncs.c | 2 ++
 src/backend/nodes/outfuncs.c  | 2 ++
 src/backend/nodes/readfuncs.c | 2 ++
 3 files changed, 6 insertions(+)

(limited to 'src/backend/nodes')

diff --git a/src/backend/nodes/copyfuncs.c b/src/backend/nodes/copyfuncs.c
index b3eac06c50e..ac8e50ef1dc 100644
--- a/src/backend/nodes/copyfuncs.c
+++ b/src/backend/nodes/copyfuncs.c
@@ -331,6 +331,7 @@ _copyBitmapOr(const BitmapOr *from)
 	/*
 	 * copy remainder of node
 	 */
+	COPY_SCALAR_FIELD(isshared);
 	COPY_NODE_FIELD(bitmapplans);
 
 	return newnode;
@@ -496,6 +497,7 @@ _copyBitmapIndexScan(const BitmapIndexScan *from)
 	 * copy remainder of node
 	 */
 	COPY_SCALAR_FIELD(indexid);
+	COPY_SCALAR_FIELD(isshared);
 	COPY_NODE_FIELD(indexqual);
 	COPY_NODE_FIELD(indexqualorig);
 
diff --git a/src/backend/nodes/outfuncs.c b/src/backend/nodes/outfuncs.c
index d4297d11b18..825a7b283a3 100644
--- a/src/backend/nodes/outfuncs.c
+++ b/src/backend/nodes/outfuncs.c
@@ -441,6 +441,7 @@ _outBitmapOr(StringInfo str, const BitmapOr *node)
 
 	_outPlanInfo(str, (const Plan *) node);
 
+	WRITE_BOOL_FIELD(isshared);
 	WRITE_NODE_FIELD(bitmapplans);
 }
 
@@ -520,6 +521,7 @@ _outBitmapIndexScan(StringInfo str, const BitmapIndexScan *node)
 	_outScanInfo(str, (const Scan *) node);
 
 	WRITE_OID_FIELD(indexid);
+	WRITE_BOOL_FIELD(isshared);
 	WRITE_NODE_FIELD(indexqual);
 	WRITE_NODE_FIELD(indexqualorig);
 }
diff --git a/src/backend/nodes/readfuncs.c b/src/backend/nodes/readfuncs.c
index b02d9fa2469..8f39d93a123 100644
--- a/src/backend/nodes/readfuncs.c
+++ b/src/backend/nodes/readfuncs.c
@@ -1633,6 +1633,7 @@ _readBitmapOr(void)
 
 	ReadCommonPlan(&local_node->plan);
 
+	READ_BOOL_FIELD(isshared);
 	READ_NODE_FIELD(bitmapplans);
 
 	READ_DONE();
@@ -1744,6 +1745,7 @@ _readBitmapIndexScan(void)
 	ReadCommonScan(&local_node->scan);
 
 	READ_OID_FIELD(indexid);
+	READ_BOOL_FIELD(isshared);
 	READ_NODE_FIELD(indexqual);
 	READ_NODE_FIELD(indexqualorig);
 
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