sysdeps/pthread/tst-mutex6.c

   1 /* Copyright (C) 2002-2024 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 <pthread.h>
  19 #include <signal.h>
  20 #include <stdio.h>
  21 #include <unistd.h>
  22 #include <errno.h>
  23 #include <stdbool.h>
  24
  25 #ifndef TEST_FUNCTION
  26 static int do_test (void);
  27 # define TEST_FUNCTION do_test ()
  28 #endif
  29 #include "../test-skeleton.c"
  30
  31 #ifndef ATTR
  32 pthread_mutexattr_t *attr;
  33 # define ATTR attr
  34 #endif
  35
  36 #ifndef ATTR_NULL
  37 # define ATTR_NULL (ATTR == NULL)
  38 #endif
  39
  40 static int
  41 do_test (void)
  42 {
  43   pthread_mutex_t m;
  44
  45   int e = pthread_mutex_init (&m, ATTR);
  46   if (!ATTR_NULL && e == ENOTSUP)
  47     {
  48       puts ("cannot support selected type of mutexes");
  49       e = pthread_mutex_init (&m, NULL);
  50     }
  51   if (e != 0)
  52     {
  53       puts ("mutex_init failed");
  54       return 1;
  55     }
  56
  57   if (!ATTR_NULL && pthread_mutexattr_destroy (ATTR) != 0)
  58     {
  59       puts ("mutexattr_destroy failed");
  60       return 1;
  61     }
  62
  63   if (pthread_mutex_lock (&m) != 0)
  64     {
  65       puts ("1st mutex_lock failed");
  66       return 1;
  67     }
  68
  69   delayed_exit (1);
  70   /* This call should never return.  */
  71   xpthread_mutex_lock (&m);
  72
  73   puts ("2nd mutex_lock returned");
  74   return 1;
  75 }