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Add header comments to execParallel.c and nodeGather.c.

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Patch by me, per a note from Simon Riggs.  Reviewed by Amit Kapila
and Amit Langote.
This commit is contained in:
Robert Haas
2015-10-22 10:37:24 -04:00
parent e4a618aa1e
commit 1a219fa15b
2 changed files with 22 additions and 0 deletions
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8
src/backend/executor/execParallel.c
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@ -6,6 +6,14 @@
* Portions Copyright (c) 1996-2015, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* This file contains routines that are intended to support setting up,
* using, and tearing down a ParallelContext from within the PostgreSQL
* executor. The ParallelContext machinery will handle starting the
* workers and ensuring that their state generally matches that of the
* leader; see src/backend/access/transam/README.parallel for details.
* However, we must save and restore relevant executor state, such as
* any ParamListInfo associated with the query, buffer usage info, and
* the actual plan to be passed down to the worker.
*
* IDENTIFICATION
* src/backend/executor/execParallel.c