sysdeps/pthread/tst-robust7.c

   1 /* Copyright (C) 2005-2024 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <errno.h>
  19 #include <pthread.h>
  20 #include <stdbool.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23
  24
  25 static pthread_barrier_t b;
  26 static pthread_cond_t c = PTHREAD_COND_INITIALIZER;
  27 static pthread_mutex_t m;
  28 static bool first = true;
  29
  30
  31 static void *
  32 tf (void *arg)
  33 {
  34   long int n = (long int) arg;
  35
  36   if (pthread_mutex_lock (&m) != 0)
  37     {
  38       printf ("thread %ld: mutex_lock failed\n", n + 1);
  39       exit (1);
  40     }
  41
  42   int e = pthread_barrier_wait (&b);
  43   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  44     {
  45       printf ("thread %ld: barrier_wait failed\n", n + 1);
  46       exit (1);
  47     }
  48
  49   e = pthread_cond_wait (&c, &m);
  50   if (first)
  51     {
  52       if (e != 0)
  53         {
  54           printf ("thread %ld: cond_wait failed\n", n + 1);
  55           exit (1);
  56         }
  57       first = false;
  58     }
  59   else
  60     {
  61       if (e != EOWNERDEAD)
  62         {
  63           printf ("thread %ld: cond_wait did not return EOWNERDEAD\n", n + 1);
  64           exit (1);
  65         }
  66     }
  67
  68   if (pthread_cancel (pthread_self ()) != 0)
  69     {
  70       printf ("thread %ld: cancel failed\n", n + 1);
  71       exit (1);
  72     }
  73
  74   pthread_testcancel ();
  75
  76   printf ("thread %ld: testcancel returned\n", n + 1);
  77   exit (1);
  78 }
  79
  80
  81 static int
  82 do_test (void)
  83 {
  84   pthread_mutexattr_t a;
  85   if (pthread_mutexattr_init (&a) != 0)
  86     {
  87       puts ("mutexattr_init failed");
  88       return 1;
  89     }
  90
  91   if (pthread_mutexattr_setrobust (&a, PTHREAD_MUTEX_ROBUST_NP) != 0)
  92     {
  93       puts ("mutexattr_setrobust failed");
  94       return 1;
  95     }
  96
  97 #ifdef ENABLE_PI
  98   if (pthread_mutexattr_setprotocol (&a, PTHREAD_PRIO_INHERIT) != 0)
  99     {
 100       puts ("pthread_mutexattr_setprotocol failed");
 101       return 1;
 102     }
 103 #endif
 104
 105   int e;
 106   e = pthread_mutex_init (&m, &a);
 107   if (e != 0)
 108     {
 109 #ifdef ENABLE_PI
 110       if (e == ENOTSUP)
 111         {
 112           puts ("PI robust mutexes not supported");
 113           return 0;
 114         }
 115 #endif
 116       puts ("mutex_init failed");
 117       return 1;
 118     }
 119
 120   if (pthread_mutexattr_destroy (&a) != 0)
 121     {
 122       puts ("mutexattr_destroy failed");
 123       return 1;
 124     }
 125
 126   if (pthread_barrier_init (&b, NULL, 2) != 0)
 127     {
 128       puts ("barrier_init failed");
 129       return 1;
 130     }
 131
 132 #define N 5
 133   pthread_t th[N];
 134   for (long int n = 0; n < N; ++n)
 135     {
 136       if (pthread_create (&th[n], NULL, tf, (void *) n) != 0)
 137         {
 138           printf ("pthread_create loop %ld failed\n", n + 1);
 139           return 1;
 140         }
 141
 142       e = pthread_barrier_wait (&b);
 143       if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
 144         {
 145           printf ("parent: barrier_wait failed in round %ld\n", n + 1);
 146           return 1;
 147         }
 148     }
 149
 150   if (pthread_mutex_lock (&m) != 0)
 151     {
 152       puts ("parent: mutex_lock failed");
 153       return 1;
 154     }
 155
 156   if (pthread_mutex_unlock (&m) != 0)
 157     {
 158       puts ("parent: mutex_unlock failed");
 159       return 1;
 160     }
 161
 162   if (pthread_cond_broadcast (&c) != 0)
 163     {
 164       puts ("cond_broadcast failed");
 165       return 1;
 166     }
 167
 168   for (int n = 0; n < N; ++n)
 169     {
 170       void *res;
 171       if (pthread_join (th[n], &res) != 0)
 172         {
 173           printf ("join round %d failed\n", n + 1);
 174           return 1;
 175         }
 176       if (res != PTHREAD_CANCELED)
 177         {
 178           printf ("thread %d not canceled\n", n + 1);
 179           return 1;
 180         }
 181     }
 182
 183   e = pthread_mutex_lock (&m);
 184   if (e == 0)
 185     {
 186       puts ("parent: 2nd mutex_lock succeeded");
 187       return 1;
 188     }
 189   if (e != EOWNERDEAD)
 190     {
 191       puts ("parent: mutex_lock did not return EOWNERDEAD");
 192       return 1;
 193     }
 194
 195   if (pthread_mutex_unlock (&m) != 0)
 196     {
 197       puts ("parent: 2nd mutex_unlock failed");
 198       return 1;
 199     }
 200
 201   if (pthread_mutex_destroy (&m) != 0)
 202     {
 203       puts ("mutex_destroy failed");
 204       return 1;
 205     }
 206
 207   return 0;
 208 }
 209
 210 #define TEST_FUNCTION do_test ()
 211 #include "../test-skeleton.c"