Attachment 146184 Details for Bug 223789 – test program for reproducing the problem

test program for reproducing the problem

thr_test_min.c (text/plain), 2.97 KB, created by Jani Tolonen on 2007-01-22 14:41:31 UTC

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Creator: Jani Tolonen

Created: 2007-01-22 14:41:31 UTC

Size: 2.97 KB

patch

obsolete

>/* Testing of thread creation to find memory allocation bug */
>
>#include <pthread.h>
>#include <stdio.h>
>#include <stdlib.h>
>#include <errno.h>
>
>#define TEST_COUNT 100000
>#define MAX_THREADS 100
>#define TEST_LOOP   10000
>
>uint thread_count;
>static pthread_cond_t COND_thread_count;
>static pthread_mutex_t LOCK_thread_count;
>uint global_sum;
>
>void *test_thread(void *arg)
>{
>  int i,sum=0;
>  for (i=0; i < TEST_LOOP; i++)		/* Let the thread take a while */
>    sum+=i;
>  global_sum+=sum;				/* use the value */
>  pthread_mutex_lock(&LOCK_thread_count);
>  thread_count--;
>  pthread_cond_signal(&COND_thread_count); /* Tell main we are ready */
>  pthread_mutex_unlock(&LOCK_thread_count);
>  pthread_exit(0);
>  return 0;
>}
>
>
>int main(int argc __attribute__((unused)),char **argv __attribute__((unused)))
>{
>  pthread_t tid;
>  pthread_attr_t thr_attr;
>  int i,error;
>
>  if ((error=pthread_cond_init(&COND_thread_count,NULL)))
>  {
>    fprintf(stderr,"Got error: %d from pthread_cond_init (errno: %d)",
>	    error,errno);
>    exit(1);
>  }
>  if ((error=pthread_mutex_init(&LOCK_thread_count,NULL)))
>  {
>    fprintf(stderr,"Got error: %d from pthread_cond_init (errno: %d)",
>	    error,errno);
>    exit(1);
>  }
> if ((error=pthread_attr_init(&thr_attr)))
>  {
>    fprintf(stderr,"Got error: %d from pthread_attr_init (errno: %d)",
>	    error,errno);
>    exit(1);
>  }
>  if ((error=pthread_attr_setdetachstate(&thr_attr,PTHREAD_CREATE_DETACHED)))
>  {
>    fprintf(stderr,
>	    "Got error: %d from pthread_attr_setdetachstate (errno: %d)",
>	    error,errno);
>    exit(1);
>  }
>#ifndef pthread_attr_setstacksize		/* void return value */
>  if ((error=pthread_attr_setstacksize(&thr_attr,65536L)))
>  {
>    fprintf(stderr,"Got error: %d from pthread_attr_setstacksize (errno: %d)",
>	    error,errno);
>    exit(1);
>  }
>#endif
>  printf("Init ok. Creating %d threads\n",TEST_COUNT);
>  for (i=1 ; i <= TEST_COUNT ; i++)
>  {
>    int *param= &i;
>    if ((i % 100) == 0)
>    {
>      printf("%8d",i); fflush(stdout);
>    }
>    if ((error=pthread_mutex_lock(&LOCK_thread_count)))
>    {
>      fprintf(stderr,"\nGot error: %d from pthread_mutex_lock (errno: %d)",
>	      error,errno);
>      exit(1);
>    }
>    if ((error=pthread_create(&tid,&thr_attr,test_thread,(void*) param)))
>    {
>      fprintf(stderr,"\nGot error: %d from pthread_create (errno: %d) when creating thread: %i\n",
>	      error,errno,i);
>      pthread_mutex_unlock(&LOCK_thread_count);
>      exit(1);
>    }
>    thread_count++;
>    pthread_mutex_unlock(&LOCK_thread_count);
>
>    if ((error=pthread_mutex_lock(&LOCK_thread_count)))
>      fprintf(stderr,"\nGot error: %d from pthread_mutex_lock\n",error);
>    while (thread_count > MAX_THREADS)
>    {
>      if ((error=pthread_cond_wait(&COND_thread_count,&LOCK_thread_count)))
>	fprintf(stderr,"\nGot error: %d from pthread_cond_wait\n",error);
>    }
>    if ((error=pthread_mutex_unlock(&LOCK_thread_count)))
>      fprintf(stderr,"\nGot error: %d from pthread_mutex_unlock\n",error);
>  }
>  pthread_attr_destroy(&thr_attr);
>  printf("\nend\n");
>  return 0;
>}

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Attachments on bug 223789: 146184