nptl/tst-once3.c

   1 /* Copyright (C) 2002, 2003 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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <pthread.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <time.h>
  24
  25
  26 #define N 100
  27
  28 static pthread_once_t once = PTHREAD_ONCE_INIT;
  29
  30 static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
  31 static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER;
  32
  33 static pthread_barrier_t bar;
  34
  35 static int global;
  36 static int cl_called;
  37
  38 static void
  39 once_handler1 (void)
  40 {
  41   if (pthread_mutex_lock (&mut) != 0)
  42     {
  43       puts ("once_handler1: mutex_lock failed");
  44       exit (1);
  45     }
  46   puts ("once_handler1: locked");
  47
  48   int r = pthread_barrier_wait (&bar);
  49   if (r != 0 && r!= PTHREAD_BARRIER_SERIAL_THREAD)
  50     {
  51       puts ("once_handler1: barrier_wait failed");
  52       exit (1);
  53     }
  54
  55   pthread_cond_wait (&cond, &mut);
  56
  57   /* We should never get here.  */
  58   exit (42);
  59 }
  60
  61 static void
  62 once_handler2 (void)
  63 {
  64   global = 1;
  65 }
  66
  67
  68 static void
  69 cl (void *arg)
  70 {
  71   cl_called = 1;
  72 }
  73
  74
  75 static void *
  76 tf (void *arg)
  77 {
  78   pthread_cleanup_push (cl, NULL)
  79
  80   pthread_once (&once, once_handler1);
  81
  82   pthread_cleanup_pop (0);
  83
  84   /* We should never get here.  */
  85   puts ("pthread_once in tf returned");
  86   exit (1);
  87 }
  88
  89
  90 static int
  91 do_test (void)
  92 {
  93   pthread_t th;
  94
  95   if (pthread_barrier_init (&bar, NULL, 2) != 0)
  96     {
  97       puts ("barrier_init failed");
  98       return 1;
  99     }
 100
 101   if (pthread_create (&th, NULL, tf, NULL) != 0)
 102     {
 103       puts ("first create failed");
 104       return 1;
 105     }
 106
 107   int r = pthread_barrier_wait (&bar);
 108   if (r != 0 && r!= PTHREAD_BARRIER_SERIAL_THREAD)
 109     {
 110       puts ("barrier_wait failed");
 111       return 1;
 112     }
 113
 114   if (pthread_mutex_lock (&mut) != 0)
 115     {
 116       puts ("mutex_lock failed");
 117       return 1;
 118     }
 119   /* We unlock the mutex so that we catch the case where the pthread_cond_wait
 120      call incorrectly resumes and tries to get the mutex.  */
 121   if (pthread_mutex_unlock (&mut) != 0)
 122     {
 123       puts ("mutex_unlock failed");
 124       return 1;
 125     }
 126
 127   /* Cancel the thread.  */
 128   puts ("going to cancel");
 129   if (pthread_cancel (th) != 0)
 130     {
 131       puts ("cancel failed");
 132       return 1;
 133     }
 134
 135   void *result;
 136   pthread_join (th, &result);
 137   if (result != PTHREAD_CANCELED)
 138     {
 139       puts ("join didn't return PTHREAD_CANCELED");
 140       return 1;
 141     }
 142
 143   if (cl_called != 1)
 144     {
 145       puts ("cleanup handler not called");
 146       return 1;
 147     }
 148
 149   pthread_once (&once, once_handler2);
 150
 151   if (global != 1)
 152     {
 153       puts ("global still 0");
 154       return 1;
 155     }
 156
 157   return 0;
 158 }
 159
 160 #define TEST_FUNCTION do_test ()
 161 #define TIMEOUT 4
 162 #include "../test-skeleton.c"