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Introduce local hash table for lock state, as per recent proposal.

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PROCLOCK structs in shared memory now have only a bitmask for held
locks, rather than counts (making them 40 bytes smaller, which is a
good thing).  Multiple locks within a transaction are counted in the
local hash table instead, and we have provision for tracking which
ResourceOwner each count belongs to.  Solves recently reported problem
with memory leakage within long transactions.
This commit is contained in:
Tom Lane
2004-08-27 17:07:42 +00:00
parent ef16b4e157
commit 1785acebf2
10 changed files with 729 additions and 495 deletions
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2
contrib/userlock/user_locks.c
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@ -75,7 +75,7 @@ user_write_unlock_oid(Oid oid)
int
user_unlock_all(void)
{
return LockReleaseAll(USER_LOCKMETHOD, MyProc, true);
return LockReleaseAll(USER_LOCKMETHOD, true);
}
/* end of file */