nptl/tst-cond10.c

   1 /* Copyright (C) 2003 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
   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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <error.h>
  21 #include <pthread.h>
  22 #include <stdbool.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25
  26
  27 #define N 10
  28 #define ROUNDS 100
  29
  30 static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
  31 static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER;
  32 static pthread_barrier_t bN1;
  33 static pthread_barrier_t b2;
  34
  35
  36 static void *
  37 tf (void *p)
  38 {
  39   if (pthread_mutex_lock (&mut) != 0)
  40     {
  41       puts ("child: 1st mutex_lock failed");
  42       exit (1);
  43     }
  44
  45   int e = pthread_barrier_wait (&b2);
  46   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  47     {
  48       puts ("child: 1st barrier_wait failed");
  49       exit (1);
  50     }
  51
  52   if (pthread_cond_wait (&cond, &mut) != 0)
  53     {
  54       puts ("child: cond_wait failed");
  55       exit (1);
  56     }
  57
  58   if (pthread_mutex_unlock (&mut) != 0)
  59     {
  60       puts ("child: mutex_unlock failed");
  61       exit (1);
  62     }
  63
  64   e = pthread_barrier_wait (&bN1);
  65   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  66     {
  67       puts ("child: 2nd barrier_wait failed");
  68       exit (1);
  69     }
  70
  71   return NULL;
  72 }
  73
  74
  75 static int
  76 do_test (void)
  77 {
  78   if (pthread_barrier_init (&bN1, NULL, N + 1) != 0)
  79     {
  80       puts ("barrier_init failed");
  81       exit (1);
  82     }
  83
  84   if (pthread_barrier_init (&b2, NULL, 2) != 0)
  85     {
  86       puts ("barrier_init failed");
  87       exit (1);
  88     }
  89
  90   int r;
  91   for (r = 0; r < ROUNDS; ++r)
  92     {
  93       printf ("round %d\n", r + 1);
  94
  95       int i;
  96       pthread_t th[N];
  97       for (i = 0; i < N; ++i)
  98         {
  99           if (pthread_create (&th[i], NULL, tf, NULL) != 0)
 100             {
 101               puts ("create failed");
 102               exit (1);
 103             }
 104
 105           int e = pthread_barrier_wait (&b2);
 106           if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
 107             {
 108               puts ("parent: 1st barrier_wait failed");
 109               exit (1);
 110             }
 111         }
 112
 113       if (pthread_mutex_lock (&mut) != 0)
 114         {
 115           puts ("parent: mutex_lock failed");
 116           exit (1);
 117         }
 118       if (pthread_mutex_unlock (&mut) != 0)
 119         {
 120           puts ("parent: mutex_unlock failed");
 121           exit (1);
 122         }
 123
 124       /* N single signal calls.  Without locking.  This tests that no
 125          signal gets lost.  */
 126       for (i = 0; i < N; ++i)
 127         if (pthread_cond_signal (&cond) != 0)
 128           {
 129             puts ("cond_signal failed");
 130             exit (1);
 131           }
 132
 133       int e = pthread_barrier_wait (&bN1);
 134       if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
 135         {
 136           puts ("parent: 2nd barrier_wait failed");
 137           exit (1);
 138         }
 139
 140       for (i = 0; i < N; ++i)
 141         if (pthread_join (th[i], NULL) != 0)
 142           {
 143             puts ("join failed");
 144             exit (1);
 145           }
 146     }
 147
 148   return 0;
 149 }
 150
 151
 152 #define TEST_FUNCTION do_test ()
 153 #include "../test-skeleton.c"