nptl/tst-mutex3.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 ("1st mutex_unlock in child succeeded");
  37       exit (1);
  38     }
  39   if (e != EPERM)
  40     {
  41       puts ("1st mutex_unlock in child didn't return EPERM");
  42       exit (1);
  43     }
  44
  45   e = pthread_mutex_trylock (&m);
  46   if (e == 0)
  47     {
  48       puts ("mutex_trylock in second thread succeeded");
  49       exit (1);
  50     }
  51   if (e != EBUSY)
  52     {
  53       puts ("mutex_trylock returned wrong value");
  54       exit (1);
  55     }
  56
  57   e = pthread_barrier_wait (&b);
  58   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  59     {
  60       puts ("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 ("barrier_wait failed");
  68       exit (1);
  69     }
  70
  71   e = pthread_mutex_unlock (&m);
  72   if (e == 0)
  73     {
  74       puts ("2nd mutex_unlock in child succeeded");
  75       exit (1);
  76     }
  77   if (e != EPERM)
  78     {
  79       puts ("2nd mutex_unlock in child didn't return EPERM");
  80       exit (1);
  81     }
  82
  83   if (pthread_mutex_trylock (&m) != 0)
  84     {
  85       puts ("2nd mutex_trylock in second thread failed");
  86       exit (1);
  87     }
  88
  89   if (pthread_mutex_unlock (&m) != 0)
  90     {
  91       puts ("3rd mutex_unlock in second thread 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
 104   if (pthread_mutexattr_init (&a) != 0)
 105     {
 106       puts ("mutexattr_init failed");
 107       return 1;
 108     }
 109
 110   if (pthread_mutexattr_settype (&a, PTHREAD_MUTEX_RECURSIVE) != 0)
 111     {
 112       puts ("mutexattr_settype failed");
 113       return 1;
 114     }
 115
 116   if (pthread_mutex_init (&m, &a) != 0)
 117     {
 118       puts ("mutex_init failed");
 119       return 1;
 120     }
 121
 122   if (pthread_barrier_init (&b, NULL, 2) != 0)
 123     {
 124       puts ("barrier_init failed");
 125       return 1;
 126     }
 127
 128   if (pthread_mutex_lock (&m) != 0)
 129     {
 130       puts ("mutex_lock failed");
 131       return 1;
 132     }
 133
 134   if (pthread_mutex_lock (&m) != 0)
 135     {
 136       puts ("2nd mutex_lock failed");
 137       return 1;
 138     }
 139
 140   if (pthread_mutex_trylock (&m) != 0)
 141     {
 142       puts ("1st trylock failed");
 143       return 1;
 144     }
 145
 146   if (pthread_mutex_unlock (&m) != 0)
 147     {
 148       puts ("mutex_unlock failed");
 149       return 1;
 150     }
 151
 152   if (pthread_mutex_unlock (&m) != 0)
 153     {
 154       puts ("2nd mutex_unlock failed");
 155       return 1;
 156     }
 157
 158   pthread_t th;
 159   if (pthread_create (&th, NULL, tf, NULL) != 0)
 160     {
 161       puts ("create failed");
 162       return 1;
 163     }
 164
 165   int e = pthread_barrier_wait (&b);
 166   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
 167     {
 168       puts ("barrier_wait failed");
 169       return 1;
 170     }
 171
 172   if (pthread_mutex_unlock (&m) != 0)
 173     {
 174       puts ("3rd mutex_unlock failed");
 175       return 1;
 176     }
 177
 178   e = pthread_mutex_unlock (&m);
 179   if (e == 0)
 180     {
 181       puts ("4th mutex_unlock succeeded");
 182       return 1;
 183     }
 184   if (e != EPERM)
 185     {
 186       puts ("4th mutex_unlock didn't return EPERM");
 187       return 1;
 188     }
 189
 190   e = pthread_barrier_wait (&b);
 191   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
 192     {
 193       puts ("barrier_wait failed");
 194       return 1;
 195     }
 196
 197   if (pthread_join (th, NULL) != 0)
 198     {
 199       puts ("join failed");
 200       return 1;
 201     }
 202
 203   if (pthread_barrier_destroy (&b) != 0)
 204     {
 205       puts ("barrier_destroy failed");
 206       return 1;
 207     }
 208
 209   if (pthread_mutex_destroy (&m) != 0)
 210     {
 211       puts ("mutex_destroy failed");
 212       return 1;
 213     }
 214
 215   if (pthread_mutexattr_destroy (&a) != 0)
 216     {
 217       puts ("mutexattr_destroy failed");
 218       return 1;
 219     }
 220
 221   return 0;
 222 }
 223
 224 #define TEST_FUNCTION do_test ()
 225 #include "../test-skeleton.c"