X-Recipient: archive-cygwin AT delorie DOT com X-Spam-Check-By: sourceware.org Date: Fri, 12 Feb 2010 15:08:51 -0500 From: Christopher Faylor To: cygwin AT cygwin DOT com Subject: Re: pthread problem Message-ID: <20100212200851.GB8731@ednor.casa.cgf.cx> Reply-To: cygwin AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com References: <20100205190006 DOT GA9938 AT ednor DOT casa DOT cgf DOT cx> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100205190006.GA9938@ednor.casa.cgf.cx> User-Agent: Mutt/1.5.20 (2009-06-14) Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: 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 On Fri, Feb 05, 2010 at 02:00:07PM -0500, Christopher Faylor wrote: >On Sat, Feb 06, 2010 at 12:13:59AM +0530, Gaurav Sachdeva wrote: >>Hi, >> >>I have written following code - >> >>#include >> >>void *thread_func(void *data) >>{ >> printf("In thread\n"); >> pthread_exit(NULL); >>} >> >>int main() >>{ >> pthread_t mythread; >> int rc; >> >> rc = pthread_create(&mythread, NULL, thread_func, NULL); >> if (rc){ >> printf("ERROR; return code from pthread_create() is %d\n", rc); >> exit(-1); >> } >> >> printf("In main..\n"); >> >> pthread_exit(NULL); >>} >> >>It must print both "In main" and "In thread". >>But sometimes it prints one of these two and sometimes both. >>I tried in actual UNIX OS. It always prints both. >> >>I also tried in c++ in cygwin, problem exists there also. >> >>Is anyone aware of this problem and its solutions? > >Looks like a bug in Cygwin. From my reading of the pthread_exit man >page, it looks like it should wait for all available threads to exit >before the process exits. Unfortunately that doesn't happen. > >You can probably fix that by adding a pthread_join() before the >pthread_exit(). > >In the meantime, I'll look into fixing this. This should be fixed in today's snapshot. Thanks for the test case. cgf -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple