nptl/tst-cond7.c

   1 /* Copyright (C) 2003 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <errno.h>
  21 #include <pthread.h>
  22 #include <stdbool.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <time.h>
  27 #include <sys/time.h>
  28
  29
  30 typedef struct
  31   {
  32     pthread_cond_t cond;
  33     pthread_mutex_t lock;
  34     pthread_t h;
  35   } T;
  36
  37
  38 static volatile bool done;
  39
  40
  41 static void *
  42 tf (void *arg)
  43 {
  44   puts ("child created");
  45
  46   T *t = (T *) arg;
  47
  48   if (pthread_mutex_lock (&t->lock) != 0)
  49     {
  50       puts ("child: lock failed");
  51       exit (1);
  52     }
  53
  54   done = true;
  55
  56   if (pthread_cond_signal (&t->cond) != 0)
  57     {
  58       puts ("child: cond_signal failed");
  59       exit (1);
  60     }
  61
  62   if (pthread_cond_wait (&t->cond, &t->lock) != 0)
  63     {
  64       puts ("child: cond_wait failed");
  65       exit (1);
  66     }
  67
  68   if (pthread_mutex_unlock (&t->lock) != 0)
  69     {
  70       puts ("child: unlock failed");
  71       exit (1);
  72     }
  73
  74   return NULL;
  75 }
  76
  77
  78 static int
  79 do_test (void)
  80 {
  81   int i;
  82 #define N 100
  83   T *t[N];
  84   for (i = 0; i < N; ++i)
  85     {
  86       printf ("round %d\n", i);
  87
  88       t[i] = (T *) malloc (sizeof (T));
  89       if (t[i] == NULL)
  90         {
  91           puts ("out of memory");
  92           exit (1);
  93         }
  94
  95       if (pthread_mutex_init (&t[i]->lock, NULL) != 0
  96           || pthread_cond_init (&t[i]->cond, NULL) != 0)
  97         {
  98           puts ("an _init function failed");
  99           exit (1);
 100         }
 101
 102       if (pthread_mutex_lock (&t[i]->lock) != 0)
 103         {
 104           puts ("initial mutex_lock failed");
 105           exit (1);
 106         }
 107
 108       done = false;
 109
 110       if (pthread_create (&t[i]->h, NULL, tf, t[i]) != 0)
 111         {
 112           puts ("pthread_create failed");
 113           exit (1);
 114         }
 115
 116       do
 117         if (pthread_cond_wait (&t[i]->cond, &t[i]->lock) != 0)
 118           {
 119             puts ("cond_wait failed");
 120             exit (1);
 121           }
 122       while (! done);
 123
 124       if (pthread_cancel (t[i]->h) != 0)
 125         {
 126           puts ("cancel failed");
 127           exit (1);
 128         }
 129
 130       puts ("parent: joining now");
 131
 132       void *result;
 133       if (pthread_join (t[i]->h, &result) != 0)
 134         {
 135           puts ("join failed");
 136           exit (1);
 137         }
 138
 139       if (result != PTHREAD_CANCELED)
 140         {
 141           puts ("result != PTHREAD_CANCELED");
 142           exit (1);
 143         }
 144     }
 145
 146   for (i = 0; i < N; ++i)
 147     free (t[i]);
 148
 149   return 0;
 150 }
 151
 152
 153 #define TEST_FUNCTION do_test ()
 154 #include "../test-skeleton.c"