/*******************************************************************************
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 .
stdlib/exit.cpp
Terminates the current process.
*******************************************************************************/
#include
#include
#include
#include
#include
#include
#include
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_dir_lock);
pthread_mutex_lock(&__first_file_lock);
while ( __first_dir )
__first_dir->closedir_indirect(__first_dir);
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);
}