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glibc  2.9
Defines | Functions | Variables
tst-cond22.c File Reference
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include "../test-skeleton.c"

Go to the source code of this file.

Defines

#define TEST_FUNCTION   do_test ()

Functions

static void cl (void *arg)
static void * tf (void *arg)
static int do_test (void)

Variables

static pthread_barrier_t b
static pthread_cond_t c = PTHREAD_COND_INITIALIZER
static pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER

Define Documentation

#define TEST_FUNCTION   do_test ()

Definition at line 159 of file tst-cond22.c.


Function Documentation

static void cl ( void *  arg) [static]

Definition at line 12 of file tst-cond22.c.

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static int do_test ( void  ) [static]

Definition at line 55 of file tst-cond22.c.

{
  int status = 0;

  if (pthread_barrier_init (&b, NULL, 2) != 0)
    {
      puts ("barrier_init failed");
      return 1;
    }

  pthread_t th;
  if (pthread_create (&th, NULL, tf, NULL) != 0)
    {
      puts ("1st create failed");
      return 1;
    }
  int e = pthread_barrier_wait (&b);
  if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
    {
      puts ("1st barrier_wait failed");
      return 1;
    }
  if (pthread_mutex_lock (&m) != 0)
    {
      puts ("1st mutex_lock failed");
      return 1;
    }
  if (pthread_cond_signal (&c) != 0)
    {
      puts ("1st cond_signal failed");
      return 1;
    }
  if (pthread_cancel (th) != 0)
    {
      puts ("cancel failed");
      return 1;
    }
  if (pthread_mutex_unlock (&m) != 0)
    {
      puts ("1st mutex_unlock failed");
      return 1;
    }
  void *res;
  if (pthread_join (th, &res) != 0)
    {
      puts ("1st join failed");
      return 1;
    }
  if (res != PTHREAD_CANCELED)
    {
      puts ("first thread not canceled");
      status = 1;
    }

  printf ("cond = { %d, %x, %lld, %lld, %lld, %p, %u, %u }\n",
         c.__data.__lock, c.__data.__futex, c.__data.__total_seq,
         c.__data.__wakeup_seq, c.__data.__woken_seq, c.__data.__mutex,
         c.__data.__nwaiters, c.__data.__broadcast_seq);

  if (pthread_create (&th, NULL, tf, (void *) 1l) != 0)
    {
      puts ("2nd create failed");
      return 1;
    }
  e = pthread_barrier_wait (&b);
  if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
    {
      puts ("2nd barrier_wait failed");
      return 1;
    }
  if (pthread_mutex_lock (&m) != 0)
    {
      puts ("2nd mutex_lock failed");
      return 1;
    }
  if (pthread_cond_signal (&c) != 0)
    {
      puts ("2nd cond_signal failed");
      return 1;
    }
  if (pthread_mutex_unlock (&m) != 0)
    {
      puts ("2nd mutex_unlock failed");
      return 1;
    }
  if (pthread_join (th, &res) != 0)
    {
      puts ("2nd join failed");
      return 1;
    }
  if (res != NULL)
    {
      puts ("2nd thread canceled");
      status = 1;
    }

  printf ("cond = { %d, %x, %lld, %lld, %lld, %p, %u, %u }\n",
         c.__data.__lock, c.__data.__futex, c.__data.__total_seq,
         c.__data.__wakeup_seq, c.__data.__woken_seq, c.__data.__mutex,
         c.__data.__nwaiters, c.__data.__broadcast_seq);

  return status;
}

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static void* tf ( void *  arg) [static]

Definition at line 19 of file tst-cond22.c.

{
  if (pthread_mutex_lock (&m) != 0)
    {
      printf ("%s: mutex_lock failed\n", __func__);
      exit (1);
    }
  int e = pthread_barrier_wait (&b);
  if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
    {
      printf ("%s: barrier_wait failed\n", __func__);
      exit (1);
    }
  pthread_cleanup_push (cl, NULL);
  /* We have to loop here because the cancellation might come after
     the cond_wait call left the cancelable area and is then waiting
     on the mutex.  In this case the beginning of the second cond_wait
     call will cause the cancellation to happen.  */
  do
    if (pthread_cond_wait (&c, &m) != 0)
      {
       printf ("%s: cond_wait failed\n", __func__);
       exit (1);
      }
  while (arg == NULL);
  pthread_cleanup_pop (0);
  if (pthread_mutex_unlock (&m) != 0)
    {
      printf ("%s: mutex_unlock failed\n", __func__);
      exit (1);
    }
  return NULL;
}

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Variable Documentation

pthread_barrier_t b [static]

Definition at line 6 of file tst-cond22.c.

Definition at line 7 of file tst-cond22.c.

Definition at line 8 of file tst-cond22.c.