diff options
Diffstat (limited to 'lib/libpthread/thread/thr_exit.c')
| -rw-r--r-- | lib/libpthread/thread/thr_exit.c | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/lib/libpthread/thread/thr_exit.c b/lib/libpthread/thread/thr_exit.c deleted file mode 100644 index ba82fd1..0000000 --- a/lib/libpthread/thread/thr_exit.c +++ /dev/null @@ -1,159 +0,0 @@ -/* - * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au> - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the author nor the names of any co-contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * $FreeBSD$ - */ -#include <errno.h> -#include <unistd.h> -#include <fcntl.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <pthread.h> -#include "thr_private.h" - -LT10_COMPAT_PRIVATE(_pthread_exit); -LT10_COMPAT_DEFAULT(pthread_exit); - -void _pthread_exit(void *status); - -__weak_reference(_pthread_exit, pthread_exit); - -void -_thr_exit(char *fname, int lineno, char *msg) -{ - - /* Write an error message to the standard error file descriptor: */ - _thread_printf(2, - "Fatal error '%s' at line %d in file %s (errno = %d)\n", - msg, lineno, fname, errno); - - abort(); -} - -/* - * Only called when a thread is cancelled. It may be more useful - * to call it from pthread_exit() if other ways of asynchronous or - * abnormal thread termination can be found. - */ -void -_thr_exit_cleanup(void) -{ - struct pthread *curthread = _get_curthread(); - - /* - * POSIX states that cancellation/termination of a thread should - * not release any visible resources (such as mutexes) and that - * it is the applications responsibility. Resources that are - * internal to the threads library, including file and fd locks, - * are not visible to the application and need to be released. - */ - /* Unlock all private mutexes: */ - _mutex_unlock_private(curthread); - - /* - * This still isn't quite correct because we don't account - * for held spinlocks (see libc/stdlib/malloc.c). - */ -} - -void -_pthread_exit(void *status) -{ - struct pthread *curthread = _get_curthread(); - kse_critical_t crit; - struct kse *curkse; - - /* Check if this thread is already in the process of exiting: */ - if ((curthread->flags & THR_FLAGS_EXITING) != 0) { - char msg[128]; - snprintf(msg, sizeof(msg), "Thread %p has called " - "pthread_exit() from a destructor. POSIX 1003.1 " - "1996 s16.2.5.2 does not allow this!", curthread); - PANIC(msg); - } - - /* - * Flag this thread as exiting. Threads should now be prevented - * from joining to this thread. - */ - THR_SCHED_LOCK(curthread, curthread); - curthread->flags |= THR_FLAGS_EXITING; - THR_SCHED_UNLOCK(curthread, curthread); - - /* - * To avoid signal-lost problem, if signals had already been - * delivered to us, handle it. we have already set EXITING flag - * so no new signals should be delivered to us. - * XXX this is not enough if signal was delivered just before - * thread called sigprocmask and masked it! in this case, we - * might have to re-post the signal by kill() if the signal - * is targeting process (not for a specified thread). - * Kernel has same signal-lost problem, a signal may be delivered - * to a thread which is on the way to call sigprocmask or thr_exit()! - */ - if (curthread->check_pending) - _thr_sig_check_pending(curthread); - /* Save the return value: */ - curthread->ret = status; - while (curthread->cleanup != NULL) { - pthread_cleanup_pop(1); - } - if (curthread->attr.cleanup_attr != NULL) { - curthread->attr.cleanup_attr(curthread->attr.arg_attr); - } - /* Check if there is thread specific data: */ - if (curthread->specific != NULL) { - /* Run the thread-specific data destructors: */ - _thread_cleanupspecific(); - } - if (!_kse_isthreaded()) - exit(0); - crit = _kse_critical_enter(); - curkse = _get_curkse(); - KSE_LOCK_ACQUIRE(curkse, &_thread_list_lock); - /* Use thread_list_lock */ - _thread_active_threads--; - if ((_thread_scope_system <= 0 && _thread_active_threads == 1) || - (_thread_scope_system > 0 && _thread_active_threads == 0)) { - KSE_LOCK_RELEASE(curkse, &_thread_list_lock); - _kse_critical_leave(crit); - exit(0); - /* Never reach! */ - } - KSE_LOCK_RELEASE(curkse, &_thread_list_lock); - - /* This thread will never be re-scheduled. */ - KSE_LOCK(curkse); - THR_SET_STATE(curthread, PS_DEAD); - _thr_sched_switch_unlocked(curthread); - /* Never reach! */ - - /* This point should not be reached. */ - PANIC("Dead thread has resumed"); -} |
