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| author | Andres Freund <andres@anarazel.de> | 2018-03-22 11:45:07 -0700 |
|---|---|---|
| committer | Andres Freund <andres@anarazel.de> | 2018-03-22 11:51:58 -0700 |
| commit | cc415a56d09a8da7c919088036b6097b70f10791 (patch) | |
| tree | b99cb7e66041f8533dc63c4a689cbf3f03956957 /src/backend/executor/execMain.c | |
| parent | 7ec0d80c0508eae35ac8e19d041f9ba1276de08e (diff) | |
| download | postgresql-cc415a56d09a8da7c919088036b6097b70f10791.tar.gz postgresql-cc415a56d09a8da7c919088036b6097b70f10791.zip | |
Basic planner and executor integration for JIT.
This adds simple cost based plan time decision about whether JIT
should be performed. jit_above_cost, jit_optimize_above_cost are
compared with the total cost of a plan, and if the cost is above them
JIT is performed / optimization is performed respectively.
For that PlannedStmt and EState have a jitFlags (es_jit_flags) field
that stores information about what JIT operations should be performed.
EState now also has a new es_jit field, which can store a
JitContext. When there are no errors the context is released in
standard_ExecutorEnd().
It is likely that the default values for jit_[optimize_]above_cost
will need to be adapted further, but in my test these values seem to
work reasonably.
Author: Andres Freund, with feedback by Peter Eisentraut
Discussion: https://postgr.es/m/20170901064131.tazjxwus3k2w3ybh@alap3.anarazel.de
Diffstat (limited to 'src/backend/executor/execMain.c')
| -rw-r--r-- | src/backend/executor/execMain.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/backend/executor/execMain.c b/src/backend/executor/execMain.c index 91ba939bdca..890067757c0 100644 --- a/src/backend/executor/execMain.c +++ b/src/backend/executor/execMain.c @@ -48,6 +48,7 @@ #include "commands/trigger.h" #include "executor/execdebug.h" #include "foreign/fdwapi.h" +#include "jit/jit.h" #include "mb/pg_wchar.h" #include "miscadmin.h" #include "optimizer/clauses.h" @@ -249,6 +250,9 @@ standard_ExecutorStart(QueryDesc *queryDesc, int eflags) estate->es_top_eflags = eflags; estate->es_instrument = queryDesc->instrument_options; + if (queryDesc->plannedstmt) + estate->es_jit_flags = queryDesc->plannedstmt->jitFlags; + /* * Set up an AFTER-trigger statement context, unless told not to, or * unless it's EXPLAIN-only mode (when ExecutorFinish won't be called). @@ -496,6 +500,10 @@ standard_ExecutorEnd(QueryDesc *queryDesc) UnregisterSnapshot(estate->es_snapshot); UnregisterSnapshot(estate->es_crosscheck_snapshot); + /* release JIT context, if allocated */ + if (estate->es_jit) + jit_release_context(estate->es_jit); + /* * Must switch out of context before destroying it */ |