diff options
| author | Tom Lane <tgl@sss.pgh.pa.us> | 2008-11-19 01:10:24 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2008-11-19 01:10:24 +0000 |
| commit | cd35e9d7468e8f86dd5a7d928707f4ba8cdae44d (patch) | |
| tree | 0871bc92bd00e622cc567d29edf3d9a7c9b9adff /src/include/executor/executor.h | |
| parent | 667685ca7da3b895fe362863c3da00b010543399 (diff) | |
Some infrastructure changes for the upcoming auto-explain contrib module:
* Refactor explain.c slightly to export a convenient-to-use subroutine
for printing EXPLAIN results.
* Provide hooks for plugins to get control at ExecutorStart and ExecutorEnd
as well as ExecutorRun.
* Add some minimal support for tracking the total runtime of ExecutorRun.
This code won't actually do anything unless a plugin prods it to.
* Change the API of the DefineCustomXXXVariable functions to allow nonzero
"flags" to be specified for a custom GUC variable. While at it, also make
the "bootstrap" default value for custom GUCs be explicitly specified as a
parameter to these functions. This is to eliminate confusion over where the
default comes from, as has been expressed in the past by some users of the
custom-variable facility.
* Refactor GUC code a bit to ensure that a custom variable gets initialized to
something valid (like its default value) even if the placeholder value was
invalid.
Diffstat (limited to 'src/include/executor/executor.h')
| -rw-r--r-- | src/include/executor/executor.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/src/include/executor/executor.h b/src/include/executor/executor.h index 2fdaddda4da..47792df10c9 100644 --- a/src/include/executor/executor.h +++ b/src/include/executor/executor.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/executor/executor.h,v 1.152 2008/10/31 21:07:55 tgl Exp $ + * $PostgreSQL: pgsql/src/include/executor/executor.h,v 1.153 2008/11/19 01:10:23 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -60,12 +60,20 @@ ((*(expr)->evalfunc) (expr, econtext, isNull, isDone)) +/* Hook for plugins to get control in ExecutorStart() */ +typedef void (*ExecutorStart_hook_type) (QueryDesc *queryDesc, int eflags); +extern PGDLLIMPORT ExecutorStart_hook_type ExecutorStart_hook; + /* Hook for plugins to get control in ExecutorRun() */ typedef void (*ExecutorRun_hook_type) (QueryDesc *queryDesc, ScanDirection direction, long count); extern PGDLLIMPORT ExecutorRun_hook_type ExecutorRun_hook; +/* Hook for plugins to get control in ExecutorEnd() */ +typedef void (*ExecutorEnd_hook_type) (QueryDesc *queryDesc); +extern PGDLLIMPORT ExecutorEnd_hook_type ExecutorEnd_hook; + /* * prototypes from functions in execAmi.c @@ -140,11 +148,13 @@ extern HeapTuple ExecRemoveJunk(JunkFilter *junkfilter, TupleTableSlot *slot); * prototypes from functions in execMain.c */ extern void ExecutorStart(QueryDesc *queryDesc, int eflags); +extern void standard_ExecutorStart(QueryDesc *queryDesc, int eflags); extern void ExecutorRun(QueryDesc *queryDesc, ScanDirection direction, long count); extern void standard_ExecutorRun(QueryDesc *queryDesc, ScanDirection direction, long count); extern void ExecutorEnd(QueryDesc *queryDesc); +extern void standard_ExecutorEnd(QueryDesc *queryDesc); extern void ExecutorRewind(QueryDesc *queryDesc); extern void InitResultRelInfo(ResultRelInfo *resultRelInfo, Relation resultRelationDesc, |