nptl/tst-mutex7.c

   1 /* Copyright (C) 2002-2016 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    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <pthread.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <time.h>
  24
  25
  26 #ifndef TYPE
  27 # define TYPE PTHREAD_MUTEX_DEFAULT
  28 #endif
  29
  30
  31 static pthread_mutex_t lock;
  32
  33
  34 #define ROUNDS 1000
  35 #define N 100
  36
  37
  38 static void *
  39 tf (void *arg)
  40 {
  41   int nr = (long int) arg;
  42   int cnt;
  43   struct timespec ts = { .tv_sec = 0, .tv_nsec = 11000 };
  44
  45   for (cnt = 0; cnt < ROUNDS; ++cnt)
  46     {
  47       if (pthread_mutex_lock (&lock) != 0)
  48         {
  49           printf ("thread %d: failed to get the lock\n", nr);
  50           return (void *) 1l;
  51         }
  52
  53       if (pthread_mutex_unlock (&lock) != 0)
  54         {
  55           printf ("thread %d: failed to release the lock\n", nr);
  56           return (void *) 1l;
  57         }
  58
  59       nanosleep (&ts, NULL);
  60     }
  61
  62   return NULL;
  63 }
  64
  65
  66 static int
  67 do_test (void)
  68 {
  69   pthread_mutexattr_t a;
  70
  71   if (pthread_mutexattr_init (&a) != 0)
  72     {
  73       puts ("mutexattr_init failed");
  74       exit (1);
  75     }
  76
  77   if (pthread_mutexattr_settype (&a, TYPE) != 0)
  78     {
  79       puts ("mutexattr_settype failed");
  80       exit (1);
  81     }
  82
  83 #ifdef ENABLE_PI
  84   if (pthread_mutexattr_setprotocol (&a, PTHREAD_PRIO_INHERIT) != 0)
  85     {
  86       puts ("pthread_mutexattr_setprotocol failed");
  87       return 1;
  88     }
  89 #endif
  90
  91   int e = pthread_mutex_init (&lock, &a);
  92   if (e != 0)
  93     {
  94 #ifdef ENABLE_PI
  95       if (e == ENOTSUP)
  96         {
  97           puts ("PI mutexes unsupported");
  98           return 0;
  99         }
 100 #endif
 101       puts ("mutex_init failed");
 102       return 1;
 103     }
 104
 105   if (pthread_mutexattr_destroy (&a) != 0)
 106     {
 107       puts ("mutexattr_destroy failed");
 108       return 1;
 109     }
 110
 111   pthread_attr_t at;
 112   pthread_t th[N];
 113   int cnt;
 114
 115   if (pthread_attr_init (&at) != 0)
 116     {
 117       puts ("attr_init failed");
 118       return 1;
 119     }
 120
 121   if (pthread_attr_setstacksize (&at, 1 * 1024 * 1024) != 0)
 122     {
 123       puts ("attr_setstacksize failed");
 124       return 1;
 125     }
 126
 127   if (pthread_mutex_lock (&lock) != 0)
 128     {
 129       puts ("locking in parent failed");
 130       return 1;
 131     }
 132
 133   for (cnt = 0; cnt < N; ++cnt)
 134     if (pthread_create (&th[cnt], &at, tf, (void *) (long int) cnt) != 0)
 135       {
 136         printf ("creating thread %d failed\n", cnt);
 137         return 1;
 138       }
 139
 140   if (pthread_attr_destroy (&at) != 0)
 141     {
 142       puts ("attr_destroy failed");
 143       return 1;
 144     }
 145
 146   if (pthread_mutex_unlock (&lock) != 0)
 147     {
 148       puts ("unlocking in parent failed");
 149       return 1;
 150     }
 151
 152   for (cnt = 0; cnt < N; ++cnt)
 153     if (pthread_join (th[cnt], NULL) != 0)
 154       {
 155         printf ("joining thread %d failed\n", cnt);
 156         return 1;
 157       }
 158
 159   return 0;
 160 }
 161
 162 #define TIMEOUT 60
 163 #define TEST_FUNCTION do_test ()
 164 #include "../test-skeleton.c"