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Message-ID: <4A5C402F.6060209@acrodea.co.jp>
Date: Tue, 14 Jul 2009 11:22:07 +0300
From: Timo Suoranta <timo.suoranta@acrodea.co.jp>
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Subject: Re: [Qemu-devel] ARM multithreading status
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To: Qemu-devel <qemu-devel@nongnu.org>

Using qemu-system-arm, pthread_create() does not seem to return if I 
give it function which simply has empty infinite loop. Is that supposed 
to work? I used this:

http://people.debian.org/~aurel32/qemu/armel/

Funny thing is, such test actually works fine if I run it through GDB. 
No need to step, just run. I've attached my test code below as it is not 
very long.

Any ideas? To me it looks like scheduler is not preempting :/
Thanks!

--
timo

#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>


void* forever(void *arg)
{
     printf("entering forever\n");
     for(;;){}
     printf("leaving forever\n");
     return 0;
}

int main(int argc, char *argv[])
{
     int         res;
     pthread_t   thread;

     printf("pthread_create...\n");
     res = pthread_create(&thread, 0, forever, 0);
     printf("pthread_create done\n");

     if(res != 0)
     {
         printf("pthread_create() failed\n");
         exit(-1);
     }

     printf("pthread_detach...\n");
     res = pthread_detach(thread);
     printf("pthread_detach done\n");

     if(res != 0)
     {
         printf("pthread_detach() failed\n");
         exit(-1);
     }

     printf("calling pthread_detach() ok\n");

     return 0;
}