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define.c

  • Tom Lane's avatar
    a2597ef1
    Modify sequence state storage to eliminate dangling-pointer problem · a2597ef1
    Tom Lane authored 
    exemplified by bug #671.  Moving the storage to relcache turned out to
be a bad idea because relcache might decide to discard the info.  Instead,
open and close the relcache entry on each sequence operation, and use
a record of the current XID to discover whether we already hold
AccessShareLock on the sequence.
    a2597ef1
    History
    Modify sequence state storage to eliminate dangling-pointer problem
    Tom Lane authored 
    exemplified by bug #671.  Moving the storage to relcache turned out to
be a bad idea because relcache might decide to discard the info.  Instead,
open and close the relcache entry on each sequence operation, and use
a record of the current XID to discover whether we already hold
AccessShareLock on the sequence.