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Subject: Re: pthread_mutex_trylock does  not lock
From: Robert Collins <rbcollins AT cygwin DOT com>
To: Chris Knight <c DOT knight AT teligent DOT co DOT uk>
Cc: cygwin AT cygwin DOT com
In-Reply-To: <IGEKLLNAJDPOMLJGIFBIAECHCCAA.c.knight@teligent.co.uk>
References: <IGEKLLNAJDPOMLJGIFBIAECHCCAA DOT c DOT knight AT teligent DOT co DOT uk>
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Date: 03 Dec 2002 22:11:32 +1100
Message-Id: <1038913892.10594.35.camel@lifelesswks>
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On Tue, 2002-12-03 at 20:37, Chris Knight wrote:
> Hello,
>=20
> I think I have found a problem in the "pthread_mutex_trylock" call.  When=
 I
> run the following code both the trylock and lock return immediately.  If =
I
> compile this under RedHat 8 it works as I would expect with the trylock
> locking the mutex and the lock stopping execution.

Your code is buggy. You are assuming that the default mutex type is
nonrecursive, which is not the case in the version of cygwin you are
using.

If you *need* nonrecursive mutex's, you need to set that type in your
mutexattr struct.

Rob

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GPG key available at: http://users.bigpond.net.au/robertc/keys.txt.
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