nptl/tst-tls3mod.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 <pthread.h>
  21 #include <semaphore.h>
  22 #include <signal.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <unistd.h>
  26
  27
  28 extern pthread_barrier_t b;
  29
  30 #define TOTAL_SIGS 1000
  31 extern int nsigs;
  32
  33 extern sem_t s;
  34
  35
  36 static __thread void (*fp) (void);
  37
  38
  39 #define THE_SIG SIGUSR1
  40 void
  41 handler (int sig)
  42 {
  43   if (sig != THE_SIG)
  44     {
  45       write (STDOUT_FILENO, "wrong signal\n", 13);
  46       _exit (1);
  47     }
  48
  49   fp ();
  50
  51   if (sem_post (&s) != 0)
  52     {
  53       write (STDOUT_FILENO, "sem_post failed\n", 16);
  54       _exit (1);
  55     }
  56 }
  57
  58
  59 void *
  60 tf (void *arg)
  61 {
  62   if (fp != NULL)
  63     {
  64       puts ("fp not initially NULL");
  65       exit (1);
  66     }
  67
  68   fp = arg;
  69
  70   pthread_barrier_wait (&b);
  71
  72   pthread_barrier_wait (&b);
  73
  74   if (nsigs != TOTAL_SIGS)
  75     {
  76       puts ("barrier_wait prematurely returns");
  77       exit (1);
  78     }
  79
  80   return NULL;
  81 }