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- /* Copyright (C) 2003 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
- #include <pthread.h>
- #include <semaphore.h>
- #include <signal.h>
- #include <stdint.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <unistd.h>
- #include <pthreaddef.h>
- #include <tls.h>
- #if HAVE___THREAD
- static pthread_barrier_t* b = NULL;
- #define TOTAL_SIGS 1000
- static int* nsigs = NULL;
- static sem_t* s = NULL;
- static __thread void (*fp) (void);
- #define THE_SIG SIGUSR1
- void
- handler (int sig)
- {
- if (sig != THE_SIG)
- {
- write (STDOUT_FILENO, "wrong signal\n", 13);
- _exit (1);
- }
- fp ();
- if (sem_post (s) != 0)
- {
- write (STDOUT_FILENO, "sem_post failed\n", 16);
- _exit (1);
- }
- }
- void
- setup_tf (pthread_barrier_t* t_b, int* t_nsigs, sem_t* t_s)
- {
- b = t_b;
- nsigs = t_nsigs;
- s = t_s;
- }
- void *
- tf (void *arg)
- {
- if (!b || !s || !nsigs)
- {
- puts ("need to call setup_tf first");
- exit (1);
- }
- if ((uintptr_t) pthread_self () & (TCB_ALIGNMENT - 1))
- {
- puts ("thread's struct pthread not aligned enough");
- exit (1);
- }
- if (fp != NULL)
- {
- printf("fp=%p\n", (void *)&fp);
- puts ("fp not initially NULL");
- exit (1);
- }
- fp = arg;
- pthread_barrier_wait (b);
- pthread_barrier_wait (b);
- if (*nsigs != TOTAL_SIGS)
- {
- puts ("barrier_wait prematurely returns");
- exit (1);
- }
- return NULL;
- }
- #endif
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