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Re: darwin pgsql patches

From: Peter Eisentraut <peter_e(at)gmx(dot)net>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Ian Lance Taylor <ian(at)airs(dot)com>, <bierman(at)apple(dot)com>, <pgsql-patches(at)postgresql(dot)org>
Subject: Re: darwin pgsql patches
Date: 2000-12-05 21:48:39
Message-ID: Pine.LNX.4.30.0012052247350.777-100000@peter.localdomain (view raw, whole thread or download thread mbox)
Lists: pgsql-patches
Tom Lane writes:

> How efficient are POSIX semaphores, anyway?  I wonder if we couldn't
> also replace spinlocks with them...

There are POSIX spinlocks as well, though I haven't actually seen one...

> >    BTW, should I expect that POSIX also ignored the SysV IPC spec for
> >    shared memory?
> > Yes.  POSIX.1 standardizes mmap instead.
> Another TODO item I suppose :-(

It's already there.

Peter Eisentraut      peter_e(at)gmx(dot)net

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