RE: pgsql/src/backend/storage/lmgr (lmgr.c lock.c proc.c README)

From: "Hiroshi Inoue" <Inoue(at)tpf(dot)co(dot)jp>
To: "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: <pgsql-committers(at)postgresql(dot)org>
Subject: RE: pgsql/src/backend/storage/lmgr (lmgr.c lock.c proc.c README)
Date: 2001-01-12 23:59:41
Message-ID: EKEJJICOHDIEMGPNIFIJIELGDEAA.Inoue@tpf.co.jp
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> -----Original Message-----
> From: tgl(at)postgresql(dot)org
> Sent: Friday, December 22, 2000 9:52 AM
> To: pgsql-committers(at)postgresql(dot)org
> Subject: [COMMITTERS] pgsql/src/backend/storage/lmgr (lmgr.c lock.c
> proc.c README)
>
> ----------------------------- Log Message -----------------------------
>
> Revise lock manager to support "session level" locks as well as
> "transaction
> level" locks.

[snip]

> I also took this opportunity to do some cleanup and renaming in the lock
> code. The previously noted bug in ProcLockWakeup, that it
> couldn't wake up
> any waiters beyond the first non-wakeable waiter, is now fixed.

I've just noticed that this changed a locking behabior.
For example, VACUUM could hardly acquire the lock
while other backends frequently access the target table.

Regards.
Hiroshi Inoue

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