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From:	Georg <dosusb AT googlemail DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Pipe()
Date:	Sat, 16 Jul 2011 05:12:31 -0700 (PDT)
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I tried the Minix examples Rugxulo mentioned in the other thread by
converting the makefiles to DOS.

I observed that a sleep() statement in a thread causes a hang with
gthreads. GNU pth 2.07 did continue to work.

Since the Wikipedia example for pthread is the most simple I am aware
of I inserted the sleep() statement there:

#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>

#define NUM_THREADS     5

void *TaskCode(void *argument)
{
   int tid;

   tid = *((int *) argument);

   sleep(3); /*this is for testing sleep() in a thread */

   printf("Hello World! It's me, thread %d!\n", tid);
   return NULL;
}

int main (int argc, char *argv[])
{
   pthread_t threads[NUM_THREADS];
   int thread_args[NUM_THREADS];
   int rc, i;

   /* create all threads */
   for (i=0; i<NUM_THREADS; ++i) {
      thread_args[i] = i;
      printf("In main: creating thread %d\n", i);
      rc = pthread_create(&threads[i], NULL, TaskCode, (void *)
&thread_args[i]);
      assert(0 == rc);
   }

   /* wait for all threads to complete */
   for (i=0; i<NUM_THREADS; ++i) {
      rc = pthread_join(threads[i], NULL);
      assert(0 == rc);
	  printf("In main: thread %d joined\n",i);
   }
   printf("\nAll threads joined\n");
   exit(EXIT_SUCCESS);
}

This code will work with pth/pthread but hang at sleep() with
gthreads.

Georg

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