nptl/tst-mutex2.c

   1 /* Copyright (C) 2002, 2003 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
  25
  26 static pthread_mutex_t m;
  27 static pthread_barrier_t b;
  28
  29
  30 static void *
  31 tf (void *arg)
  32 {
  33   int e = pthread_mutex_unlock (&m);
  34   if (e == 0)
  35     {
  36       puts ("child: 1st mutex_unlock succeeded");
  37       exit (1);
  38     }
  39   else if (e != EPERM)
  40     {
  41       puts ("child: 1st mutex_unlock error != EPERM");
  42       exit (1);
  43     }
  44
  45   e = pthread_mutex_trylock (&m);
  46   if (e == 0)
  47     {
  48       puts ("child: 1st trylock suceeded");
  49       exit (1);
  50     }
  51   if (e != EBUSY)
  52     {
  53       puts ("child: 1st trylock didn't return EBUSY");
  54       exit (1);
  55     }
  56
  57   e = pthread_barrier_wait (&b);
  58   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  59     {
  60       puts ("child: 1st barrier_wait failed");
  61       exit (1);
  62     }
  63
  64   e = pthread_barrier_wait (&b);
  65   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  66     {
  67       puts ("child: 2nd barrier_wait failed");
  68       exit (1);
  69     }
  70
  71   e = pthread_mutex_unlock (&m);
  72   if (e == 0)
  73     {
  74       puts ("child: 2nd mutex_unlock succeeded");
  75       exit (1);
  76     }
  77   else if (e != EPERM)
  78     {
  79       puts ("child: 2nd mutex_unlock error != EPERM");
  80       exit (1);
  81     }
  82
  83   if (pthread_mutex_trylock (&m) != 0)
  84     {
  85       puts ("child: 2nd trylock failed");
  86       exit (1);
  87     }
  88
  89   if (pthread_mutex_unlock (&m) != 0)
  90     {
  91       puts ("child: 3rd mutex_unlock failed");
  92       exit (1);
  93     }
  94
  95   return NULL;
  96 }
  97
  98
  99 static int
 100 do_test (void)
 101 {
 102   pthread_mutexattr_t a;
 103   int e;
 104
 105   if (pthread_mutexattr_init (&a) != 0)
 106     {
 107       puts ("mutexattr_init failed");
 108       exit (1);
 109     }
 110
 111   if (pthread_mutexattr_settype (&a, PTHREAD_MUTEX_ERRORCHECK) != 0)
 112     {
 113       puts ("mutexattr_settype failed");
 114       exit (1);
 115     }
 116
 117   if (pthread_mutex_init (&m, &a) != 0)
 118     {
 119       puts ("mutex_init failed");
 120       exit (1);
 121     }
 122
 123   if (pthread_barrier_init (&b, NULL, 2) != 0)
 124     {
 125       puts ("barrier_init failed");
 126       exit (1);
 127     }
 128
 129   if ((e = pthread_mutex_unlock (&m)) == 0)
 130     {
 131       puts ("1st mutex_unlock succeeded");
 132       exit (1);
 133     }
 134   else if (e != EPERM)
 135     {
 136       puts ("1st mutex_unlock error != EPERM");
 137       exit (1);
 138     }
 139
 140   if (pthread_mutex_lock (&m) != 0)
 141     {
 142       puts ("mutex_lock failed");
 143       exit (1);
 144     }
 145
 146   if ((e = pthread_mutex_lock (&m)) == 0)
 147     {
 148       puts ("2nd mutex_lock succeeded");
 149       exit (1);
 150     }
 151   else if (e != EDEADLK)
 152     {
 153       puts ("2nd mutex_lock error != EDEADLK");
 154       exit (1);
 155     }
 156
 157   pthread_t th;
 158   if (pthread_create (&th, NULL, tf, NULL) != 0)
 159     {
 160       puts ("create failed");
 161       exit (1);
 162     }
 163
 164   e = pthread_barrier_wait (&b);
 165   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
 166     {
 167       puts ("1st barrier_wait failed");
 168       exit (1);
 169     }
 170
 171   if (pthread_mutex_unlock (&m) != 0)
 172     {
 173       puts ("2nd mutex_unlock failed");
 174       exit (1);
 175     }
 176
 177   if ((e = pthread_mutex_unlock (&m)) == 0)
 178     {
 179       puts ("3rd mutex_unlock succeeded");
 180       exit (1);
 181     }
 182   else if (e != EPERM)
 183     {
 184       puts ("3rd mutex_unlock error != EPERM");
 185       exit (1);
 186     }
 187
 188   e = pthread_barrier_wait (&b);
 189   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
 190     {
 191       puts ("2nd barrier_wait failed");
 192       exit (1);
 193     }
 194
 195   if (pthread_join (th, NULL) != 0)
 196     {
 197       puts ("join failed");
 198       exit (1);
 199     }
 200
 201   if (pthread_mutex_destroy (&m) != 0)
 202     {
 203       puts ("mutex_destroy failed");
 204       exit (1);
 205     }
 206
 207   if (pthread_barrier_destroy (&b) != 0)
 208     {
 209       puts ("barrier_destroy failed");
 210       exit (1);
 211     }
 212
 213   if (pthread_mutexattr_destroy (&a) != 0)
 214     {
 215       puts ("mutexattr_destroy failed");
 216       exit (1);
 217     }
 218
 219   return 0;
 220 }
 221
 222 #define TEST_FUNCTION do_test ()
 223 #include "../test-skeleton.c"