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 <stdint.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <unistd.h>
  27 #include <pthreaddef.h>
  28
  29 #if HAVE___THREAD
  30
  31 extern pthread_barrier_t b;
  32
  33 #define TOTAL_SIGS 1000
  34 extern int nsigs;
  35
  36 extern sem_t s;
  37
  38
  39 static __thread void (*fp) (void);
  40
  41
  42 #define THE_SIG SIGUSR1
  43 void
  44 handler (int sig)
  45 {
  46   if (sig != THE_SIG)
  47     {
  48       write (STDOUT_FILENO, "wrong signal\n", 13);
  49       _exit (1);
  50     }
  51
  52   fp ();
  53
  54   if (sem_post (&s) != 0)
  55     {
  56       write (STDOUT_FILENO, "sem_post failed\n", 16);
  57       _exit (1);
  58     }
  59 }
  60
  61
  62 void *
  63 tf (void *arg)
  64 {
  65   if ((uintptr_t) pthread_self () & (TCB_ALIGNMENT - 1))
  66     {
  67       puts ("thread's struct pthread not aligned enough");
  68       exit (1);
  69     }
  70
  71   if (fp != NULL)
  72     {
  73       puts ("fp not initially NULL");
  74       exit (1);
  75     }
  76
  77   fp = arg;
  78
  79   pthread_barrier_wait (&b);
  80
  81   pthread_barrier_wait (&b);
  82
  83   if (nsigs != TOTAL_SIGS)
  84     {
  85       puts ("barrier_wait prematurely returns");
  86       exit (1);
  87     }
  88
  89   return NULL;
  90 }
  91
  92 #endif