diff options
| author | Andres Freund <andres@anarazel.de> | 2018-10-15 15:24:33 -0700 |
|---|---|---|
| committer | Andres Freund <andres@anarazel.de> | 2018-10-15 18:23:25 -0700 |
| commit | c5257345ef61922468cd9abd887c3cb6c38792cb (patch) | |
| tree | c510b809c925fba6eb0b778b53b2345ea9168e50 /src/include/executor/executor.h | |
| parent | 9d906f1119de893a4ca533c5e7b97207a3aa963b (diff) | |
Move TupleTableSlots boolean member into one flag variable.
There's several reasons for this change:
1) It reduces the total size of TupleTableSlot / reduces alignment
padding, making the commonly accessed members fit into a single
cacheline (but we currently do not force proper alignment, so
that's not yet guaranteed to be helpful)
2) Combining the booleans into a flag allows to combine read/writes
from memory.
3) With the upcoming slot abstraction changes, it allows to have core
and extended flags, in a memory efficient way.
Author: Ashutosh Bapat and Andres Freund
Discussion: https://postgr.es/m/20180220224318.gw4oe5jadhpmcdnm@alap3.anarazel.de
Diffstat (limited to 'src/include/executor/executor.h')
| -rw-r--r-- | src/include/executor/executor.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/include/executor/executor.h b/src/include/executor/executor.h index c9ed1988c5f..edf538365be 100644 --- a/src/include/executor/executor.h +++ b/src/include/executor/executor.h @@ -340,7 +340,7 @@ ExecProject(ProjectionInfo *projInfo) * Successfully formed a result row. Mark the result slot as containing a * valid virtual tuple (inlined version of ExecStoreVirtualTuple()). */ - slot->tts_isempty = false; + slot->tts_flags &= ~TTS_FLAG_EMPTY; slot->tts_nvalid = slot->tts_tupleDescriptor->natts; return slot; |