From mboxrd@z Thu Jan  1 00:00:00 1970
From: Samuel Thibault <samuel.thibault@eu.citrix.com>
Subject: Re: Unexpected error: exceptions.OSError
Date: Fri, 14 Mar 2008 14:45:56 +0000
Message-ID: <20080314144556.GU4358@implementation.uk.xensource.com>
References: <38AD81989214D54EB5F20C69477AF6C105C4FD2B@xmb-sjc-217.amer.cisco.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: 8bit
Return-path: <xen-devel-bounces@lists.xensource.com>
Content-Disposition: inline
In-Reply-To: <38AD81989214D54EB5F20C69477AF6C105C4FD2B@xmb-sjc-217.amer.cisco.com>
List-Unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xensource.com>
List-Help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-Subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
Sender: xen-devel-bounces@lists.xensource.com
Errors-To: xen-devel-bounces@lists.xensource.com
To: "Phil Winterfield (winterfi)" <winterfi@cisco.com>
Cc: xen-devel@lists.xensource.com
List-Id: xen-devel@lists.xenproject.org

Hello,

Phil Winterfield (winterfi), le Thu 13 Mar 2008 15:45:03 -0700, a écrit :
>     (p, rv) = os.waitpid(cpid, os.WNOHANG)
> 
> OSError: [Errno 10] No child processes

Mmm, I think that may happen e.g. if the creation doesn't exit but gets
a signal, because in the loop we only test WIFEXITED().  If think maybe
we should rather

    if os.WIFEXITED():
	if os.WEXITSTATUS(rv) != 0:	
	    sys.exit(os.WEXITSTATUS(rv))
    elif os.WIFSIGNALED(status):
	print ("got signal %d" % os.WTERMSIG(rv))
	sys.exit(1)
    elif os.WIFSTOPPED(status):
	print ("got stopped with signal %d" % os.WSTOPSIG(rv))
	sys.exit(1)
    elif os.WIFCONTINUED(status):
	print ("continued")
	sys.exit(1)

To make sure that we properly exit() and return appropriate error
message.

Samuel