From: Marius Vollmer <mvo@zagadka.ping.de>
Cc: guile-devel@gnu.org
Subject: Re: Recursive mutexes?
Date: 27 Oct 2002 12:32:21 +0100 [thread overview]
Message-ID: <87iszonmm2.fsf@zagadka.ping.de> (raw)
In-Reply-To: <871y6c5whm.fsf@raven.i.defaultvalue.org>
Rob Browning <rlb@defaultvalue.org> writes:
> >> Well you certainly could use a condition variable instead of a mutex
> >> here, but I would suspect that in cases where you just want to wake
> >> someone else up, a mutex others can unlock would be lighter weight.
> >> With a condition variable you have to have both a mutex and the
> >> condition variable.
> >
> > And for a good reason, no?
>
> Not sure I follow.
I meant: there is a good reason that waiting on a condition variable
requires you to have a locked mutex that is the atomically unlocked.
Without this, I guess you will have a hard time avoiding race
conditions. Using mutexes in a strange way to simulate this is
probably wrong.
--
GPG: D5D4E405 - 2F9B BCCC 8527 692A 04E3 331E FAF8 226A D5D4 E405
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next prev parent reply other threads:[~2002-10-27 11:32 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-26 20:35 Recursive mutexes? Marius Vollmer
2002-10-26 21:39 ` Neil Jerram
2002-10-27 0:03 ` Marius Vollmer
2002-10-27 1:20 ` Thomas Bushnell, BSG
2002-10-27 12:36 ` Marius Vollmer
2002-10-27 7:55 ` Neil Jerram
2002-10-27 18:33 ` Rob Browning
2002-10-26 22:16 ` Rob Browning
2002-10-26 22:29 ` Rob Browning
2002-10-26 22:42 ` Tom Lord
2002-10-26 23:26 ` Thomas Bushnell, BSG
2002-10-26 23:35 ` Tom Lord
2002-10-26 23:50 ` Tom Lord
2002-10-27 1:18 ` Thomas Bushnell, BSG
2002-10-26 22:47 ` Tom Lord
2002-10-27 8:33 ` Neil Jerram
2002-10-27 17:21 ` Tom Lord
2002-10-27 0:35 ` Marius Vollmer
2002-10-27 4:36 ` Rob Browning
2002-10-27 11:32 ` Marius Vollmer [this message]
2002-10-27 18:44 ` Rob Browning
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