58 lines
1.9 KiB
C++
58 lines
1.9 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2011, 2012.
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This file is part of the Sortix C Library.
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The Sortix C Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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The Sortix C Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
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stdlib/exit.cpp
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Terminates the current process.
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*******************************************************************************/
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#include <dirent.h>
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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extern "C" { struct exit_handler* __exit_handler_stack = NULL; }
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static pthread_mutex_t exit_lock = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
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static bool currently_exiting = false;
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extern "C" void exit(int status)
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{
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// It's undefined behavior to call this function more than once: If more
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// than one thread calls the function we'll wait until the process dies.
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pthread_mutex_lock(&exit_lock);
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// It's undefined behavior to call this function more than once: If a
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// cleanup function calls this function we'll self-destruct immediately.
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if ( currently_exiting )
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_Exit(status);
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currently_exiting = true;
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while ( __exit_handler_stack )
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{
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__exit_handler_stack->hook(status, __exit_handler_stack->param);
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__exit_handler_stack = __exit_handler_stack->next;
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}
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dcloseall();
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fcloseall();
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_Exit(status);
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}
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