nptl/tst-robust7.c

   1 /* Copyright (C) 2005-2018 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2005.
   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, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <pthread.h>
  21 #include <stdbool.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24
  25
  26 static pthread_barrier_t b;
  27 static pthread_cond_t c = PTHREAD_COND_INITIALIZER;
  28 static pthread_mutex_t m;
  29 static bool first = true;
  30
  31
  32 static void *
  33 tf (void *arg)
  34 {
  35   long int n = (long int) arg;
  36
  37   if (pthread_mutex_lock (&m) != 0)
  38     {
  39       printf ("thread %ld: mutex_lock failed\n", n + 1);
  40       exit (1);
  41     }
  42
  43   int e = pthread_barrier_wait (&b);
  44   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  45     {
  46       printf ("thread %ld: barrier_wait failed\n", n + 1);
  47       exit (1);
  48     }
  49
  50   e = pthread_cond_wait (&c, &m);
  51   if (first)
  52     {
  53       if (e != 0)
  54         {
  55           printf ("thread %ld: cond_wait failed\n", n + 1);
  56           exit (1);
  57         }
  58       first = false;
  59     }
  60   else
  61     {
  62       if (e != EOWNERDEAD)
  63         {
  64           printf ("thread %ld: cond_wait did not return EOWNERDEAD\n", n + 1);
  65           exit (1);
  66         }
  67     }
  68
  69   if (pthread_cancel (pthread_self ()) != 0)
  70     {
  71       printf ("thread %ld: cancel failed\n", n + 1);
  72       exit (1);
  73     }
  74
  75   pthread_testcancel ();
  76
  77   printf ("thread %ld: testcancel returned\n", n + 1);
  78   exit (1);
  79 }
  80
  81
  82 static int
  83 do_test (void)
  84 {
  85   pthread_mutexattr_t a;
  86   if (pthread_mutexattr_init (&a) != 0)
  87     {
  88       puts ("mutexattr_init failed");
  89       return 1;
  90     }
  91
  92   if (pthread_mutexattr_setrobust_np (&a, PTHREAD_MUTEX_ROBUST_NP) != 0)
  93     {
  94       puts ("mutexattr_setrobust failed");
  95       return 1;
  96     }
  97
  98 #ifdef ENABLE_PI
  99   if (pthread_mutexattr_setprotocol (&a, PTHREAD_PRIO_INHERIT) != 0)
 100     {
 101       puts ("pthread_mutexattr_setprotocol failed");
 102       return 1;
 103     }
 104 #endif
 105
 106   int e;
 107   e = pthread_mutex_init (&m, &a);
 108   if (e != 0)
 109     {
 110 #ifdef ENABLE_PI
 111       if (e == ENOTSUP)
 112         {
 113           puts ("PI robust mutexes not supported");
 114           return 0;
 115         }
 116 #endif
 117       puts ("mutex_init failed");
 118       return 1;
 119     }
 120
 121   if (pthread_mutexattr_destroy (&a) != 0)
 122     {
 123       puts ("mutexattr_destroy failed");
 124       return 1;
 125     }
 126
 127   if (pthread_barrier_init (&b, NULL, 2) != 0)
 128     {
 129       puts ("barrier_init failed");
 130       return 1;
 131     }
 132
 133 #define N 5
 134   pthread_t th[N];
 135   for (long int n = 0; n < N; ++n)
 136     {
 137       if (pthread_create (&th[n], NULL, tf, (void *) n) != 0)
 138         {
 139           printf ("pthread_create loop %ld failed\n", n + 1);
 140           return 1;
 141         }
 142
 143       e = pthread_barrier_wait (&b);
 144       if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
 145         {
 146           printf ("parent: barrier_wait failed in round %ld\n", n + 1);
 147           return 1;
 148         }
 149     }
 150
 151   if (pthread_mutex_lock (&m) != 0)
 152     {
 153       puts ("parent: mutex_lock failed");
 154       return 1;
 155     }
 156
 157   if (pthread_mutex_unlock (&m) != 0)
 158     {
 159       puts ("parent: mutex_unlock failed");
 160       return 1;
 161     }
 162
 163   if (pthread_cond_broadcast (&c) != 0)
 164     {
 165       puts ("cond_broadcast failed");
 166       return 1;
 167     }
 168
 169   for (int n = 0; n < N; ++n)
 170     {
 171       void *res;
 172       if (pthread_join (th[n], &res) != 0)
 173         {
 174           printf ("join round %d failed\n", n + 1);
 175           return 1;
 176         }
 177       if (res != PTHREAD_CANCELED)
 178         {
 179           printf ("thread %d not canceled\n", n + 1);
 180           return 1;
 181         }
 182     }
 183
 184   e = pthread_mutex_lock (&m);
 185   if (e == 0)
 186     {
 187       puts ("parent: 2nd mutex_lock succeeded");
 188       return 1;
 189     }
 190   if (e != EOWNERDEAD)
 191     {
 192       puts ("parent: mutex_lock did not return EOWNERDEAD");
 193       return 1;
 194     }
 195
 196   if (pthread_mutex_unlock (&m) != 0)
 197     {
 198       puts ("parent: 2nd mutex_unlock failed");
 199       return 1;
 200     }
 201
 202   if (pthread_mutex_destroy (&m) != 0)
 203     {
 204       puts ("mutex_destroy failed");
 205       return 1;
 206     }
 207
 208   return 0;
 209 }
 210
 211 #define TEST_FUNCTION do_test ()
 212 #include "../test-skeleton.c"