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Add plan_cache_mode setting

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This allows overriding the choice of custom or generic plan.

Author: Pavel Stehule <pavel.stehule@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/CAFj8pRAGLaiEm8ur5DWEBo7qHRWTk9HxkuUAz00CZZtJj-LkCA%40mail.gmail.com
This commit is contained in:
Peter Eisentraut
2018-07-16 13:35:41 +02:00
parent a06e56b247
commit f7cb2842bf
7 changed files with 179 additions and 0 deletions
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11
src/include/utils/plancache.h
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@@ -182,4 +182,15 @@ extern CachedPlan *GetCachedPlan(CachedPlanSource *plansource,
QueryEnvironment *queryEnv);
extern void ReleaseCachedPlan(CachedPlan *plan, bool useResOwner);
/* possible values for plan_cache_mode */
typedef enum
{
PLAN_CACHE_MODE_AUTO,
PLAN_CACHE_MODE_FORCE_GENERIC_PLAN,
PLAN_CACHE_MODE_FORCE_CUSTOM_PLAN
} PlanCacheMode;
/* GUC parameter */
extern int plan_cache_mode;
#endif /* PLANCACHE_H */