nptl/tst-mutex6.c

   1 /* Copyright (C) 2002-2019 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, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <pthread.h>
  20 #include <signal.h>
  21 #include <stdio.h>
  22 #include <unistd.h>
  23 #include <errno.h>
  24 #include <stdbool.h>
  25
  26 #ifndef TEST_FUNCTION
  27 static int do_test (void);
  28 # define TEST_FUNCTION do_test ()
  29 #endif
  30 #include "../test-skeleton.c"
  31
  32 #ifndef ATTR
  33 pthread_mutexattr_t *attr;
  34 # define ATTR attr
  35 #endif
  36
  37 #ifndef ATTR_NULL
  38 # define ATTR_NULL (ATTR == NULL)
  39 #endif
  40
  41 static int
  42 do_test (void)
  43 {
  44   pthread_mutex_t m;
  45
  46   int e = pthread_mutex_init (&m, ATTR);
  47   if (!ATTR_NULL && e == ENOTSUP)
  48     {
  49       puts ("cannot support selected type of mutexes");
  50       e = pthread_mutex_init (&m, NULL);
  51     }
  52   if (e != 0)
  53     {
  54       puts ("mutex_init failed");
  55       return 1;
  56     }
  57
  58   if (!ATTR_NULL && pthread_mutexattr_destroy (ATTR) != 0)
  59     {
  60       puts ("mutexattr_destroy failed");
  61       return 1;
  62     }
  63
  64   if (pthread_mutex_lock (&m) != 0)
  65     {
  66       puts ("1st mutex_lock failed");
  67       return 1;
  68     }
  69
  70   delayed_exit (1);
  71   /* This call should never return.  */
  72   xpthread_mutex_lock (&m);
  73
  74   puts ("2nd mutex_lock returned");
  75   return 1;
  76 }