nptl/tst-mutex2.c

   1 /* Copyright (C) 2002, 2003, 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
  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       return 1;
 109     }
 110
 111   if (pthread_mutexattr_settype (&a, PTHREAD_MUTEX_ERRORCHECK) != 0)
 112     {
 113       puts ("mutexattr_settype failed");
 114       return 1;
 115     }
 116
 117 #ifdef ENABLE_PI
 118   if (pthread_mutexattr_setprotocol (&a, PTHREAD_PRIO_INHERIT) != 0)
 119     {
 120       puts ("pthread_mutexattr_setprotocol failed");
 121       return 1;
 122     }
 123 #endif
 124
 125   e = pthread_mutex_init (&m, &a);
 126   if (e != 0)
 127     {
 128 #ifdef ENABLE_PI
 129       if (e == ENOTSUP)
 130         {
 131           puts ("PI mutexes unsupported");
 132           return 0;
 133         }
 134 #endif
 135       puts ("mutex_init failed");
 136       return 1;
 137     }
 138
 139   if (pthread_barrier_init (&b, NULL, 2) != 0)
 140     {
 141       puts ("barrier_init failed");
 142       return 1;
 143     }
 144
 145   e = pthread_mutex_unlock (&m);
 146   if (e == 0)
 147     {
 148       puts ("1st mutex_unlock succeeded");
 149       return 1;
 150     }
 151   else if (e != EPERM)
 152     {
 153       puts ("1st mutex_unlock error != EPERM");
 154       return 1;
 155     }
 156
 157   if (pthread_mutex_lock (&m) != 0)
 158     {
 159       puts ("mutex_lock failed");
 160       return 1;
 161     }
 162
 163   e = pthread_mutex_lock (&m);
 164   if (e == 0)
 165     {
 166       puts ("2nd mutex_lock succeeded");
 167       return 1;
 168     }
 169   else if (e != EDEADLK)
 170     {
 171       puts ("2nd mutex_lock error != EDEADLK");
 172       return 1;
 173     }
 174
 175   pthread_t th;
 176   if (pthread_create (&th, NULL, tf, NULL) != 0)
 177     {
 178       puts ("create failed");
 179       return 1;
 180     }
 181
 182   e = pthread_barrier_wait (&b);
 183   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
 184     {
 185       puts ("1st barrier_wait failed");
 186       return 1;
 187     }
 188
 189   if (pthread_mutex_unlock (&m) != 0)
 190     {
 191       puts ("2nd mutex_unlock failed");
 192       return 1;
 193     }
 194
 195   e = pthread_mutex_unlock (&m);
 196   if (e == 0)
 197     {
 198       puts ("3rd mutex_unlock succeeded");
 199       return 1;
 200     }
 201   else if (e != EPERM)
 202     {
 203       puts ("3rd mutex_unlock error != EPERM");
 204       return 1;
 205     }
 206
 207   e = pthread_barrier_wait (&b);
 208   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
 209     {
 210       puts ("2nd barrier_wait failed");
 211       return 1;
 212     }
 213
 214   if (pthread_join (th, NULL) != 0)
 215     {
 216       puts ("join failed");
 217       return 1;
 218     }
 219
 220   if (pthread_mutex_destroy (&m) != 0)
 221     {
 222       puts ("mutex_destroy failed");
 223       return 1;
 224     }
 225
 226   if (pthread_barrier_destroy (&b) != 0)
 227     {
 228       puts ("barrier_destroy failed");
 229       return 1;
 230     }
 231
 232   if (pthread_mutexattr_destroy (&a) != 0)
 233     {
 234       puts ("mutexattr_destroy failed");
 235       return 1;
 236     }
 237
 238   return 0;
 239 }
 240
 241 #define TEST_FUNCTION do_test ()
 242 #include "../test-skeleton.c"