76 lines
2.4 KiB
C++
76 lines
2.4 KiB
C++
/*******************************************************************************
|
|
|
|
Copyright(C) Jonas 'Sortie' Termansen 2011, 2012, 2014.
|
|
|
|
This file is part of the Sortix C Library.
|
|
|
|
The Sortix 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 3 of the License, or (at your
|
|
option) any later version.
|
|
|
|
The Sortix 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 Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
stdlib/exit.cpp
|
|
Terminates the current process.
|
|
|
|
*******************************************************************************/
|
|
|
|
#include <dirent.h>
|
|
#include <DIR.h>
|
|
#include <FILE.h>
|
|
#include <pthread.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
extern "C" { struct exit_handler* __exit_handler_stack = NULL; }
|
|
|
|
static pthread_mutex_t exit_lock = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
|
|
static bool currently_exiting = false;
|
|
|
|
extern "C" FILE __stdin_file;
|
|
|
|
extern "C" { DIR* __first_dir = NULL; }
|
|
extern "C" { pthread_mutex_t __first_dir_lock = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP; }
|
|
extern "C" { FILE* __first_file = &__stdin_file; }
|
|
extern "C" { pthread_mutex_t __first_file_lock = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP; }
|
|
|
|
extern "C" void exit(int status)
|
|
{
|
|
// It's undefined behavior to call this function more than once: If more
|
|
// than one thread calls the function we'll wait until the process dies.
|
|
pthread_mutex_lock(&exit_lock);
|
|
|
|
// It's undefined behavior to call this function more than once: If a
|
|
// cleanup function calls this function we'll self-destruct immediately.
|
|
if ( currently_exiting )
|
|
_Exit(status);
|
|
currently_exiting = true;
|
|
|
|
while ( __exit_handler_stack )
|
|
{
|
|
__exit_handler_stack->hook(status, __exit_handler_stack->param);
|
|
__exit_handler_stack = __exit_handler_stack->next;
|
|
}
|
|
|
|
pthread_mutex_lock(&__first_file_lock);
|
|
|
|
for ( FILE* fp = __first_file; fp; fp = fp->next )
|
|
{
|
|
flockfile(fp);
|
|
if ( fp->fflush_indirect )
|
|
fp->fflush_indirect(fp);
|
|
if ( fp->close_func )
|
|
fp->close_func(fp->user);
|
|
}
|
|
|
|
_Exit(status);
|
|
}
|