From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <pthreads-win32-return-780-listarch-pthreads-win32=sources.redhat.com@sources.redhat.com>
Received: (qmail 5557 invoked by alias); 18 Mar 2004 15:29:02 -0000
Mailing-List: contact pthreads-win32-help@sources.redhat.com; run by ezmlm
Precedence: bulk
List-Subscribe: <mailto:pthreads-win32-subscribe@sources.redhat.com>
List-Archive: <http://sources.redhat.com/ml/pthreads-win32/>
List-Post: <mailto:pthreads-win32@sources.redhat.com>
List-Help: <mailto:pthreads-win32-help@sources.redhat.com>, <http://sources.redhat.com/ml/#faqs>
Sender: pthreads-win32-owner@sources.redhat.com
Received: (qmail 5536 invoked from network); 18 Mar 2004 15:28:59 -0000
Received: from unknown (HELO smtpcl1.fiducia.de) (195.200.32.50)
  by sources.redhat.com with SMTP; 18 Mar 2004 15:28:59 -0000
Received: from xcsmtp01.fiducia.de (xcsmtp01.fiducia.de [10.253.17.9])
	by smtpcl1.fiducia.de  with ESMTP id i2IFSvb28730
	for <pthreads-win32@sources.redhat.com>; Thu, 18 Mar 2004 16:28:57 +0100 (MET)
Sensitivity: 
Subject: Memory leak using detaching over Thread-Attributes with example
To: pthreads-win32@sources.redhat.com
From: Rainer.Schiele@fiducia.de
Date: Thu, 18 Mar 2004 15:29:00 -0000
Message-ID: <OF165BA280.84B31B44-ONC1256E5B.00552EF7@fiducia.de>
MIME-Version: 1.0
Content-type: text/plain; charset=us-ascii
X-SW-Source: 2004/txt/msg00035.txt.bz2

Hello,

I'm encounter an problem that an memory leak occur (and also the Windows Handles
run out), when I detach an Thread with the Thread-Attributes on pthread_create
using pthread_attr_init and pthread_setdetachstate.

Using another approach creating an Thread with pthread_create (attr == NULL) and
calls then pthread_detach on the Thread-ID no leak occur.

I'm using Windows XP, MinGW-3.1.0-1, MSYS-1.0.9.

Looking in the code i found nothing special.

Any Hints?

Thanks Rainer


#include <stdio.h>
#include <pthread.h>
#include <winsock.h>


void *ThreadFunc(void *ptr);

int main(int argc, char *argv[]) {
    pthread_t tid;
    pthread_attr_t attr;
    int rc, i;
    int detachstate;


/*
    rc = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
    if (rc != 0) {
        fprintf(stderr,"pthread_attr_setdetachstate rc=%d\n", rc);
        return 1;
    }
*/
/*
    detachstate = 1;
    rc = pthread_attr_setdetachstate(&attr, detachstate);
    if (rc != 0) {
        fprintf(stderr,"pthread_attr_setdetachstate rc=%d\n", rc);
        return 1;
    }
*/

    fprintf(stderr,"Threadtest started\n");

    for(i=0; i<10 ;i++) {
        /*rc = pthread_create(&tid, &attr, ThreadFunc, (void*) i);*/
        Sleep(5000);
        rc = pthread_create(&tid, NULL, ThreadFunc, (void*) i);
        if (rc != 0) {
            fprintf(stderr,"pthread_create(%d) rc=%d\n", i, rc);
            return 1;
        }

        rc = pthread_detach(tid);
        if (rc != 0) {
            fprintf(stderr,"pthread_detach(%d) rc=%d\n", i, rc);
            return 1;
        }

    }

    fprintf(stderr,"Threadtest ended\n");

    Sleep(100000);

}

void *ThreadFunc(void *ptr) {
    int j = (int) ptr;

    fprintf(stderr,"Thread %d started\n", j);

    Sleep(10000);

    fprintf(stderr,"Thread %d ended\n", j);

    return (NULL);
}