nptl/tst-tls3mod.c

   1 /* Copyright (C) 2003, 2011 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
  30 extern pthread_barrier_t b;
  31
  32 #define TOTAL_SIGS 1000
  33 extern int nsigs;
  34
  35 extern sem_t s;
  36
  37
  38 static __thread void (*fp) (void);
  39
  40
  41 #define THE_SIG SIGUSR1
  42 void
  43 handler (int sig)
  44 {
  45   if (sig != THE_SIG)
  46     {
  47       write (STDOUT_FILENO, "wrong signal\n", 13);
  48       _exit (1);
  49     }
  50
  51   fp ();
  52
  53   if (sem_post (&s) != 0)
  54     {
  55       write (STDOUT_FILENO, "sem_post failed\n", 16);
  56       _exit (1);
  57     }
  58 }
  59
  60
  61 void *
  62 tf (void *arg)
  63 {
  64   if ((uintptr_t) pthread_self () & (TCB_ALIGNMENT - 1))
  65     {
  66       puts ("thread's struct pthread not aligned enough");
  67       exit (1);
  68     }
  69
  70   if (fp != NULL)
  71     {
  72       puts ("fp not initially NULL");
  73       exit (1);
  74     }
  75
  76   fp = arg;
  77
  78   pthread_barrier_wait (&b);
  79
  80   pthread_barrier_wait (&b);
  81
  82   if (nsigs != TOTAL_SIGS)
  83     {
  84       puts ("barrier_wait prematurely returns");
  85       exit (1);
  86     }
  87
  88   return NULL;
  89 }