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Parallel executor support.

This code provides infrastructure for a parallel leader to start upparallel workers to execute subtrees of the plan tree being executedin the master. User-supplied parameters from ParamListInfo are passeddown, but PARAM_EXEC parameters are not. Various other constructs,such as initplans, subplans, and CTEs, are also not currently shared.Nevertheless, there's enough here to support a basic implementation ofparallel query, and we can lift some of the current restrictions asneeded.Amit Kapila and Robert Haas

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17 files changed

+1007

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lines changed

src
- backend
  - executor
  - nodes
  - optimizer/plan
    - planner.c
    - setrefs.c
  - utils/adt
    - datum.c
- include
  - executor
    - execParallel.h
    - instrument.h
  - nodes
  - utils
    - datum.h

17 files changed

+1007

-2

lines changed

`‎src/backend/executor/Makefile`

Lines changed: 2 additions & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -13,7 +13,8 @@ top_builddir = ../../..`
`13`	`13`	`include$(top_builddir)/src/Makefile.global`
`14`	`14`
`15`	`15`	`OBJS = execAmi.o execCurrent.o execGrouping.o execIndexing.o execJunk.o\`
`16`		`- execMain.o execProcnode.o execQual.o execScan.o execTuples.o\`
	`16`	`+ execMain.o execParallel.o execProcnode.o execQual.o\`
	`17`	`+ execScan.o execTuples.o\`
`17`	`18`	`execUtils.o functions.o instrument.o nodeAppend.o nodeAgg.o\`
`18`	`19`	`nodeBitmapAnd.o nodeBitmapOr.o\`
`19`	`20`	`nodeBitmapHeapscan.o nodeBitmapIndexscan.o nodeCustom.o nodeHash.o\`

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Commitd1b7c1f

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17 files changed

17 files changed

`‎src/backend/executor/Makefile`

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