/************************************************************************
* libc/stdlib/lib_abort.c
*
* Copyright (C) 2007, 2009, 2011-2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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 NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
* COPYRIGHT OWNER 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.
*
************************************************************************/
/************************************************************************
* Included Files
************************************************************************/
#include <nuttx/config.h>
#include <stdlib.h>
#include <pthread.h>
/************************************************************************
* Pre-processor Definitions
************************************************************************/
/************************************************************************
* Private Type Declarations
************************************************************************/
/************************************************************************
* Global Variables
************************************************************************/
/************************************************************************
* Private Variables
************************************************************************/
/************************************************************************
* Private Function Prototypes
************************************************************************/
/************************************************************************
* Private Functions
************************************************************************/
/************************************************************************
* Public Functions
************************************************************************/
/************************************************************************
* Name: Abort
*
* Description:
* The abort() first unblocks the SIGABRT signal, and then raises that
* signal for the calling process. This results in the abnormal
* termination of the process unless the SIGABRT signal is caught and
* the signal handler does not return.
*
* If the abort() function causes process termination, all open
* streams are closed and flushed.
*
* If the SIGABRT signal is ignored, or caught by a handler that
* returns, the abort() function will still terminate the process.
* It does this by restoring the default disposition for SIGABRT and
* then raising the signal for a second time.
*
* Input parameters:
* None
*
* Returned Value:
* This function does not return,
*
************************************************************************/
void abort(void)
{
/* NuttX does not support standard signal functionality (like the
* behavior of the SIGABRT signal). So no attempt is made to provide
* a conformant version of abort() at this time. This version does not
* signal the calling thread all.
*
* Note that pthread_exit() is called instead of exit(). That is because
* we do no know if abort was called from a pthread or a normal thread
* (we could find out, of course). If abort() is called from a non-pthread,
* then pthread_exit() should fail and fall back to call exit() anyway.
*
* If exit() is called (either below or via pthread_exit()), then exit()
* will flush and close all open files and terminate the thread. If this
* function was called from a pthread, then pthread_exit() will complete
* any joins, but will not flush or close any streams.
*/
#ifdef CONFIG_DISABLE_PTHREAD
exit(EXIT_FAILURE);
#else
pthread_exit(NULL);
#endif
}
