89 lines
3.2 KiB
C
89 lines
3.2 KiB
C
/****************************************************************************
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* libc/signal/sig_raise.c
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*
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* Copyright (C) 2016 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 <signal.h>
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#include <pthread.h>
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#include <assert.h>
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#include <errno.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: sig_raise
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*
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* Description:
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* The raise() function sends the signal signo to the executing thread or
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* process. If a signal handler is called, the raise() function does not
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* return until after the signal handler does.
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*
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* If the implementation supports the Threads option, the effect of the
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* raise() function is equivalent to calling:
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*
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* pthread_kill(pthread_self(), signo);
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*
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* except that on failures, -1 (ERROR) is returned and the errno() variable
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* is set accordingly. Otherwise, the effect of the raise() function is
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* equivalent to calling:
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*
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* kill(getpid(), signo)
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*
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****************************************************************************/
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int raise(int signo)
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{
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#ifndef CONFIG_DISABLE_PTHREAD
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int errcode = pthread_kill(pthread_self(), signo);
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if (errcode != OK)
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{
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DEBUGASSERT(errcode > 0);
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set_errno(errcode);
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return ERROR;
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}
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return OK;
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#else
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return kill(getpid(), signo);
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#endif
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}
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