Update portal-related memory context names and API

Rename PortalMemory to TopPortalContext, to avoid confusion with
PortalContext and align naming with similar top-level memory contexts.

Rename PortalData's "heap" field to portalContext.  The "heap" naming
seems quite antiquated and confusing.  Also get rid of the
PortalGetHeapMemory() macro and access the field directly, which we do
for other portal fields, so this abstraction doesn't buy anything.

Reviewed-by: Andrew Dunstan <andrew.dunstan@2ndquadrant.com>
Reviewed-by: Alvaro Herrera <alvherre@alvh.no-ip.org>

1 files changed, 5 insertions, 5 deletions

diff --git a/src/backend/commands/portalcmds.c b/src/backend/commands/portalcmds.c
index ff38e94cb1f..e9771546893 100644
--- a/src/backend/commands/portalcmds.c
+++ b/src/backend/commands/portalcmds.c
@@ -96,7 +96,7 @@ PerformCursorOpen(DeclareCursorStmt *cstmt, ParamListInfo params,
 	 */
 	portal = CreatePortal(cstmt->portalname, false, false);
 
-	oldContext = MemoryContextSwitchTo(PortalGetHeapMemory(portal));
+	oldContext = MemoryContextSwitchTo(portal->portalContext);
 
 	plan = copyObject(plan);
 
@@ -363,7 +363,7 @@ PersistHoldablePortal(Portal portal)
 		ActivePortal = portal;
 		if (portal->resowner)
 			CurrentResourceOwner = portal->resowner;
-		PortalContext = PortalGetHeapMemory(portal);
+		PortalContext = portal->portalContext;
 
 		MemoryContextSwitchTo(PortalContext);
 
@@ -450,10 +450,10 @@ PersistHoldablePortal(Portal portal)
 	PopActiveSnapshot();
 
 	/*
-	 * We can now release any subsidiary memory of the portal's heap context;
+	 * We can now release any subsidiary memory of the portal's context;
 	 * we'll never use it again.  The executor already dropped its context,
-	 * but this will clean up anything that glommed onto the portal's heap via
+	 * but this will clean up anything that glommed onto the portal's context via
 	 * PortalContext.
 	 */
-	MemoryContextDeleteChildren(PortalGetHeapMemory(portal));
+	MemoryContextDeleteChildren(portal->portalContext);
 }