nptl/tst-cond15.c

   1 /* Copyright (C) 2004-2018 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2004.
   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 <string.h>
  24 #include <unistd.h>
  25 #include <sys/time.h>
  26
  27
  28 static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
  29 static pthread_mutex_t mut = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
  30 static pthread_mutex_t mut2 = PTHREAD_MUTEX_INITIALIZER;
  31
  32 static void *
  33 tf (void *p)
  34 {
  35   if (pthread_mutex_lock (&mut) != 0)
  36     {
  37       printf ("%s: 1st mutex_lock failed\n", __func__);
  38       exit (1);
  39     }
  40   if (pthread_mutex_lock (&mut) != 0)
  41     {
  42       printf ("%s: 2nd mutex_lock failed\n", __func__);
  43       exit (1);
  44     }
  45   if (pthread_mutex_lock (&mut) != 0)
  46     {
  47       printf ("%s: 3rd mutex_lock failed\n", __func__);
  48       exit (1);
  49     }
  50
  51   if (pthread_mutex_unlock (&mut2) != 0)
  52     {
  53       printf ("%s: mutex_unlock failed\n", __func__);
  54       exit (1);
  55     }
  56
  57   struct timeval tv;
  58   gettimeofday (&tv, NULL);
  59   struct timespec ts;
  60   TIMEVAL_TO_TIMESPEC (&tv, &ts);
  61   ts.tv_sec += p == NULL ? 100 : 1;
  62
  63   int err = pthread_cond_timedwait (&cond, &mut, &ts);
  64   if ((err != 0 && p == NULL) || (err != ETIMEDOUT && p != NULL))
  65     {
  66       printf ("%s: cond_wait failed\n", __func__);
  67       exit (1);
  68     }
  69
  70   if (pthread_mutex_unlock (&mut) != 0)
  71     {
  72       printf ("%s: 1st mutex_unlock failed\n", __func__);
  73       exit (1);
  74     }
  75   if (pthread_mutex_unlock (&mut) != 0)
  76     {
  77       printf ("%s: 2nd mutex_unlock failed\n", __func__);
  78       exit (1);
  79     }
  80   if (pthread_mutex_unlock (&mut) != 0)
  81     {
  82       printf ("%s: 3rd mutex_unlock failed\n", __func__);
  83       exit (1);
  84     }
  85
  86   puts ("child: done");
  87
  88   return NULL;
  89 }
  90
  91
  92 static int
  93 do_test (void)
  94 {
  95   if (pthread_mutex_lock (&mut2) != 0)
  96     {
  97       puts ("1st mutex_lock failed");
  98       return 1;
  99     }
 100
 101   puts ("parent: create 1st child");
 102
 103   pthread_t th;
 104   int err = pthread_create (&th, NULL, tf, NULL);
 105   if (err != 0)
 106     {
 107       printf ("parent: cannot 1st create thread: %s\n", strerror (err));
 108       return 1;
 109     }
 110
 111   /* We have to synchronize with the child.  */
 112   if (pthread_mutex_lock (&mut2) != 0)
 113     {
 114       puts ("2nd mutex_lock failed");
 115       return 1;
 116     }
 117
 118   /* Give the child to reach to pthread_cond_wait.  */
 119   sleep (1);
 120
 121   if (pthread_cond_signal (&cond) != 0)
 122     {
 123       puts ("cond_signal failed");
 124       return 1;
 125     }
 126
 127   err = pthread_join (th, NULL);
 128   if (err != 0)
 129     {
 130       printf ("parent: failed to join: %s\n", strerror (err));
 131       return 1;
 132     }
 133
 134
 135   puts ("parent: create 2nd child");
 136
 137   err = pthread_create (&th, NULL, tf, (void *) 1l);
 138   if (err != 0)
 139     {
 140       printf ("parent: cannot 2nd create thread: %s\n", strerror (err));
 141       return 1;
 142     }
 143
 144   err = pthread_join (th, NULL);
 145   if (err != 0)
 146     {
 147       printf ("parent: failed to join: %s\n", strerror (err));
 148       return 1;
 149     }
 150
 151   puts ("done");
 152
 153   return 0;
 154 }
 155
 156
 157 #define TEST_FUNCTION do_test ()
 158 #define TIMEOUT 6
 159 #include "../test-skeleton.c"