nptl/tst-mutex7.c

   1 /* Copyright (C) 2002, 2004, 2006 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 <errno.h>
  21 #include <pthread.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <time.h>
  25
  26
  27 #ifndef TYPE
  28 # define TYPE PTHREAD_MUTEX_DEFAULT
  29 #endif
  30
  31
  32 static pthread_mutex_t lock;
  33
  34
  35 #define ROUNDS 1000
  36 #define N 100
  37
  38
  39 static void *
  40 tf (void *arg)
  41 {
  42   int nr = (long int) arg;
  43   int cnt;
  44   struct timespec ts = { .tv_sec = 0, .tv_nsec = 11000 };
  45
  46   for (cnt = 0; cnt < ROUNDS; ++cnt)
  47     {
  48       if (pthread_mutex_lock (&lock) != 0)
  49         {
  50           printf ("thread %d: failed to get the lock\n", nr);
  51           return (void *) 1l;
  52         }
  53
  54       if (pthread_mutex_unlock (&lock) != 0)
  55         {
  56           printf ("thread %d: failed to release the lock\n", nr);
  57           return (void *) 1l;
  58         }
  59
  60       nanosleep (&ts, NULL);
  61     }
  62
  63   return NULL;
  64 }
  65
  66
  67 static int
  68 do_test (void)
  69 {
  70   pthread_mutexattr_t a;
  71
  72   if (pthread_mutexattr_init (&a) != 0)
  73     {
  74       puts ("mutexattr_init failed");
  75       exit (1);
  76     }
  77
  78   if (pthread_mutexattr_settype (&a, TYPE) != 0)
  79     {
  80       puts ("mutexattr_settype failed");
  81       exit (1);
  82     }
  83
  84 #ifdef ENABLE_PI
  85   if (pthread_mutexattr_setprotocol (&a, PTHREAD_PRIO_INHERIT) != 0)
  86     {
  87       puts ("pthread_mutexattr_setprotocol failed");
  88       return 1;
  89     }
  90 #endif
  91
  92   int e = pthread_mutex_init (&lock, &a);
  93   if (e != 0)
  94     {
  95 #ifdef ENABLE_PI
  96       if (e == ENOTSUP)
  97         {
  98           puts ("PI mutexes unsupported");
  99           return 0;
 100         }
 101 #endif
 102       puts ("mutex_init failed");
 103       return 1;
 104     }
 105
 106   if (pthread_mutexattr_destroy (&a) != 0)
 107     {
 108       puts ("mutexattr_destroy failed");
 109       return 1;
 110     }
 111
 112   pthread_attr_t at;
 113   pthread_t th[N];
 114   int cnt;
 115
 116   if (pthread_attr_init (&at) != 0)
 117     {
 118       puts ("attr_init failed");
 119       return 1;
 120     }
 121
 122   if (pthread_attr_setstacksize (&at, 1 * 1024 * 1024) != 0)
 123     {
 124       puts ("attr_setstacksize failed");
 125       return 1;
 126     }
 127
 128   if (pthread_mutex_lock (&lock) != 0)
 129     {
 130       puts ("locking in parent failed");
 131       return 1;
 132     }
 133
 134   for (cnt = 0; cnt < N; ++cnt)
 135     if (pthread_create (&th[cnt], &at, tf, (void *) (long int) cnt) != 0)
 136       {
 137         printf ("creating thread %d failed\n", cnt);
 138         return 1;
 139       }
 140
 141   if (pthread_attr_destroy (&at) != 0)
 142     {
 143       puts ("attr_destroy failed");
 144       return 1;
 145     }
 146
 147   if (pthread_mutex_unlock (&lock) != 0)
 148     {
 149       puts ("unlocking in parent failed");
 150       return 1;
 151     }
 152
 153   for (cnt = 0; cnt < N; ++cnt)
 154     if (pthread_join (th[cnt], NULL) != 0)
 155       {
 156         printf ("joining thread %d failed\n", cnt);
 157         return 1;
 158       }
 159
 160   return 0;
 161 }
 162
 163 #define TIMEOUT 60
 164 #define TEST_FUNCTION do_test ()
 165 #include "../test-skeleton.c"