nptl/tst-mutex7.c

   1 /* Copyright (C) 2002, 2004 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
   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 <pthread.h>
  21 #include <stdio.h>
  22 #include <time.h>
  23
  24
  25 #ifndef INIT
  26 # define INIT PTHREAD_MUTEX_INITIALIZER
  27 #endif
  28
  29
  30 static pthread_mutex_t lock = INIT;
  31
  32
  33 #define ROUNDS 1000
  34 #define N 100
  35
  36
  37 static void *
  38 tf (void *arg)
  39 {
  40   int nr = (long int) arg;
  41   int cnt;
  42   struct timespec ts = { .tv_sec = 0, .tv_nsec = 11000 };
  43
  44   for (cnt = 0; cnt < ROUNDS; ++cnt)
  45     {
  46       if (pthread_mutex_lock (&lock) != 0)
  47         {
  48           printf ("thread %d: failed to get the lock\n", nr);
  49           return (void *) 1l;
  50         }
  51
  52       if (pthread_mutex_unlock (&lock) != 0)
  53         {
  54           printf ("thread %d: failed to release the lock\n", nr);
  55           return (void *) 1l;
  56         }
  57
  58       nanosleep (&ts, NULL);
  59     }
  60
  61   return NULL;
  62 }
  63
  64
  65 static int
  66 do_test (void)
  67 {
  68   pthread_attr_t at;
  69   pthread_t th[N];
  70   int cnt;
  71
  72   if (pthread_attr_init (&at) != 0)
  73     {
  74       puts ("attr_init failed");
  75       return 1;
  76     }
  77
  78   if (pthread_attr_setstacksize (&at, 1 * 1024 * 1024) != 0)
  79     {
  80       puts ("attr_setstacksize failed");
  81       return 1;
  82     }
  83
  84   if (pthread_mutex_lock (&lock) != 0)
  85     {
  86       puts ("locking in parent failed");
  87       return 1;
  88     }
  89
  90   for (cnt = 0; cnt < N; ++cnt)
  91     if (pthread_create (&th[cnt], &at, tf, (void *) (long int) cnt) != 0)
  92       {
  93         printf ("creating thread %d failed\n", cnt);
  94         return 1;
  95       }
  96
  97   if (pthread_attr_destroy (&at) != 0)
  98     {
  99       puts ("attr_destroy failed");
 100       return 1;
 101     }
 102
 103   if (pthread_mutex_unlock (&lock) != 0)
 104     {
 105       puts ("unlocking in parent failed");
 106       return 1;
 107     }
 108
 109   for (cnt = 0; cnt < N; ++cnt)
 110     if (pthread_join (th[cnt], NULL) != 0)
 111       {
 112         printf ("joining thread %d failed\n", cnt);
 113         return 1;
 114       }
 115
 116   return 0;
 117 }
 118
 119 #define TIMEOUT 60
 120 #define TEST_FUNCTION do_test ()
 121 #include "../test-skeleton.c"