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Date:	Wed, 28 Feb 2001 18:56:58 -0500
From:	Christopher Faylor <cgf AT redhat DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: spawn hangs for non-Cygwin programs
Message-ID:	<20010228185658.I5603@redhat.com>
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References:	<3A9D6C7A DOT 8E6A52FF AT tensilica DOT com> <20010228184732 DOT G5603 AT redhat DOT com>
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In-Reply-To:	<20010228184732.G5603@redhat.com>; from cgf@redhat.com on Wed, Feb 28, 2001 at 06:47:32PM -0500

On Wed, Feb 28, 2001 at 06:47:32PM -0500, Christopher Faylor wrote:
>On Wed, Feb 28, 2001 at 01:24:10PM -0800, Bob Wilson wrote:
>>I have a Cygwin program that contains the following call to invoke a
>>child process:
>>
>>    pid = spawnvp((int)_P_NOWAIT, argv[0], argv);
>>
>>Sometime between Cygwin 1.1.4 and 1.1.8 it seems to have stopped
>>working.  If the child is another Cygwin program, then everything is
>>fine.  If the child was compiled with -mno-cygwin, however, the spawnvp
>>call never returns (as if I hadn't specified _P_NOWAIT).
>>
>>Is this supposed to work?
>
>Yes.

Actually, on reflection, this is working as designed, unfortunately.  spawn
relies on some synchronization with the cygwin process now and if the process
is not a cygwin process, the synchronization never happens.  So, spawn
waits for the program to terminate.

cgf

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