nptl/tst-cond22.c

   1 #include <pthread.h>
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4
   5
   6 static pthread_barrier_t b;
   7 static pthread_cond_t c = PTHREAD_COND_INITIALIZER;
   8 static pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;
   9
  10
  11 static void
  12 cl (void *arg)
  13 {
  14   pthread_mutex_unlock (&m);
  15 }
  16
  17
  18 static void *
  19 tf (void *arg)
  20 {
  21   if (pthread_mutex_lock (&m) != 0)
  22     {
  23       printf ("%s: mutex_lock failed\n", __func__);
  24       exit (1);
  25     }
  26   int e = pthread_barrier_wait (&b);
  27   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  28     {
  29       printf ("%s: barrier_wait failed\n", __func__);
  30       exit (1);
  31     }
  32   pthread_cleanup_push (cl, NULL);
  33   /* We have to loop here because the cancellation might come after
  34      the cond_wait call left the cancelable area and is then waiting
  35      on the mutex.  In this case the beginning of the second cond_wait
  36      call will cause the cancellation to happen.  */
  37   do
  38     if (pthread_cond_wait (&c, &m) != 0)
  39       {
  40         printf ("%s: cond_wait failed\n", __func__);
  41         exit (1);
  42       }
  43   while (arg == NULL);
  44   pthread_cleanup_pop (0);
  45   if (pthread_mutex_unlock (&m) != 0)
  46     {
  47       printf ("%s: mutex_unlock failed\n", __func__);
  48       exit (1);
  49     }
  50   return NULL;
  51 }
  52
  53
  54 static int
  55 do_test (void)
  56 {
  57   int status = 0;
  58
  59   if (pthread_barrier_init (&b, NULL, 2) != 0)
  60     {
  61       puts ("barrier_init failed");
  62       return 1;
  63     }
  64
  65   pthread_t th;
  66   if (pthread_create (&th, NULL, tf, NULL) != 0)
  67     {
  68       puts ("1st create failed");
  69       return 1;
  70     }
  71   int e = pthread_barrier_wait (&b);
  72   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  73     {
  74       puts ("1st barrier_wait failed");
  75       return 1;
  76     }
  77   if (pthread_mutex_lock (&m) != 0)
  78     {
  79       puts ("1st mutex_lock failed");
  80       return 1;
  81     }
  82   if (pthread_cond_signal (&c) != 0)
  83     {
  84       puts ("1st cond_signal failed");
  85       return 1;
  86     }
  87   if (pthread_cancel (th) != 0)
  88     {
  89       puts ("cancel failed");
  90       return 1;
  91     }
  92   if (pthread_mutex_unlock (&m) != 0)
  93     {
  94       puts ("1st mutex_unlock failed");
  95       return 1;
  96     }
  97   void *res;
  98   if (pthread_join (th, &res) != 0)
  99     {
 100       puts ("1st join failed");
 101       return 1;
 102     }
 103   if (res != PTHREAD_CANCELED)
 104     {
 105       puts ("first thread not canceled");
 106       status = 1;
 107     }
 108
 109   printf ("cond = { %d, %x, %lld, %lld, %lld, %p, %u, %u }\n",
 110           c.__data.__lock, c.__data.__futex, c.__data.__total_seq,
 111           c.__data.__wakeup_seq, c.__data.__woken_seq, c.__data.__mutex,
 112           c.__data.__nwaiters, c.__data.__broadcast_seq);
 113
 114   if (pthread_create (&th, NULL, tf, (void *) 1l) != 0)
 115     {
 116       puts ("2nd create failed");
 117       return 1;
 118     }
 119   e = pthread_barrier_wait (&b);
 120   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
 121     {
 122       puts ("2nd barrier_wait failed");
 123       return 1;
 124     }
 125   if (pthread_mutex_lock (&m) != 0)
 126     {
 127       puts ("2nd mutex_lock failed");
 128       return 1;
 129     }
 130   if (pthread_cond_signal (&c) != 0)
 131     {
 132       puts ("2nd cond_signal failed");
 133       return 1;
 134     }
 135   if (pthread_mutex_unlock (&m) != 0)
 136     {
 137       puts ("2nd mutex_unlock failed");
 138       return 1;
 139     }
 140   if (pthread_join (th, &res) != 0)
 141     {
 142       puts ("2nd join failed");
 143       return 1;
 144     }
 145   if (res != NULL)
 146     {
 147       puts ("2nd thread canceled");
 148       status = 1;
 149     }
 150
 151   printf ("cond = { %d, %x, %lld, %lld, %lld, %p, %u, %u }\n",
 152           c.__data.__lock, c.__data.__futex, c.__data.__total_seq,
 153           c.__data.__wakeup_seq, c.__data.__woken_seq, c.__data.__mutex,
 154           c.__data.__nwaiters, c.__data.__broadcast_seq);
 155
 156   return status;
 157 }
 158
 159 #define TEST_FUNCTION do_test ()
 160 #include "../test-skeleton.c"