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23 results

nodeHashjoin.c

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    • Tom Lane's avatar
      06e10abc
      Fix problems with cached tuple descriptors disappearing while still in use · 06e10abc
      Tom Lane authored 
      by creating a reference-count mechanism, similar to what we did a long time
ago for catcache entries.  The back branches have an ugly solution involving
lots of extra copies, but this way is more efficient.  Reference counting is
only applied to tupdescs that are actually in caches --- there seems no need
to use it for tupdescs that are generated in the executor, since they'll go
away during plan shutdown by virtue of being in the per-query memory context.
Neil Conway and Tom Lane
      06e10abc
      History
      Fix problems with cached tuple descriptors disappearing while still in use
      Tom Lane authored 
      by creating a reference-count mechanism, similar to what we did a long time
ago for catcache entries.  The back branches have an ugly solution involving
lots of extra copies, but this way is more efficient.  Reference counting is
only applied to tupdescs that are actually in caches --- there seems no need
to use it for tupdescs that are generated in the executor, since they'll go
away during plan shutdown by virtue of being in the per-query memory context.
Neil Conway and Tom Lane
    nodeHashjoin.c 24.75 KiB