4d94d1ed75
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4553 42af7a65-404d-4744-a932-0658087f49c3
122 lines
5.0 KiB
C
122 lines
5.0 KiB
C
/************************************************************************
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* lib/stdlib/lib_abort.c
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*
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* Copyright (C) 2007, 2009, 2011-2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************/
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/************************************************************************
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* Included Files
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************************************************************************/
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#include <nuttx/config.h>
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#include <stdlib.h>
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#include <pthread.h>
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/************************************************************************
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* Pre-processor Definitions
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************************************************************************/
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/************************************************************************
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* Private Type Declarations
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************************************************************************/
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/************************************************************************
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* Global Variables
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************************************************************************/
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/************************************************************************
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* Private Variables
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************************************************************************/
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/************************************************************************
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* Private Function Prototypes
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************************************************************************/
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/************************************************************************
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* Private Functions
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************************************************************************/
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/************************************************************************
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* Public Functions
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************************************************************************/
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/************************************************************************
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* Name: Abort
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*
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* Description:
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* The abort() first unblocks the SIGABRT signal, and then raises that
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* signal for the calling process. This results in the abnormal
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* termination of the process unless the SIGABRT signal is caught and
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* the signal handler does not return.
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*
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* If the abort() function causes process termination, all open
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* streams are closed and flushed.
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*
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* If the SIGABRT signal is ignored, or caught by a handler that
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* returns, the abort() function will still terminate the process.
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* It does this by restoring the default disposition for SIGABRT and
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* then raising the signal for a second time.
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*
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* Input parameters:
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* None
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*
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* Returned Value:
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* This function does not return,
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*
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************************************************************************/
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void abort(void)
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{
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/* NuttX does not support standard signal functionality (like the
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* behavior of the SIGABRT signal). So no attempt is made to provide
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* a conformant version of abort() at this time. This version does not
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* signal the calling thread all.
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*
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* Note that pthread_exit() is called instead of exit(). That is because
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* we do no know if abort was called from a pthread or a normal thread
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* (we could find out, of course). If abort() is called from a non-pthread,
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* then pthread_exit() should fail and fall back to call exit() anyway.
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*
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* If exit() is called (either below or via pthread_exit()), then exit()
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* will flush and close all open files and terminate the thread. If this
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* function was called from a pthread, then pthread_exit() will complete
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* any joins, but will not flush or close any streams.
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*/
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#ifdef CONFIG_DISABLE_PTHREAD
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exit(EXIT_FAILURE);
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#else
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pthread_exit(NULL);
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#endif
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}
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