Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com Message-ID: <000f01c56d59$7d976d40$1f3ca8c0@AlohaSunset.com> From: "Mark Pizzolato" To: References: <20050609223533 DOT GA9899 AT trixie DOT casa DOT cgf DOT cx> Subject: Re: Multi Threaded programs deadlock doing simple I/O operations Date: Thu, 9 Jun 2005 18:12:33 -0700 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-IsSubscribed: yes On Thursday, June 09, 2005 at 3:35 PM, Christopher Faylor wrote: > On Wed, Jun 08, 2005 at 05:43:59PM -0700, Mark Pizzolato wrote: > >There is a serious problem for multi threaded programs doing simple I/O > >operations in cygwin (open, dup, fdopen, fclose, and close). > > > >The attached 81 line test program clearly demonstrates the issue (by > >hanging and no longer consuming CPU or performing any I/O operations). > > Thanks for the relatively small test case. That was enough to track the > problem down. I'm generating a new snapshot with a fix for this > problem. The snapshot looks good! This fixes the stability problems with clamav's clamd that I've been chasing for a long time. Thanks. - Mark Pizzolato -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/