Clean up some longstanding problems in shared-cache invalidation.

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SI messages now include the relevant database OID, so that operations
in one database do not cause useless cache flushes in backends attached
to other databases.  Declare SI messages properly using a union, to
eliminate the former assumption that Oid is the same size as int or Index.
Rewrite the nearly-unreadable code in inval.c, and document it better.
Arrange for catcache flushes at end of command/transaction to happen before
relcache flushes do --- this avoids loading a new tuple into the catcache
while setting up new relcache entry, only to have it be flushed again
immediately.

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This commit is contained in:

Tom Lane

2001-06-19 19:42:16 +00:00

parent d9a069e224

commit bbbc00af88

10 changed files with 533 additions and 733 deletions

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1059

src/backend/utils/cache/inval.c vendored

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