88 lines
3.1 KiB
C
88 lines
3.1 KiB
C
/****************************************************************************
|
|
* sched/signal/sig_waitinfo.c
|
|
*
|
|
* Copyright (C) 2007-2009, 2017 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 <errno.h>
|
|
|
|
#include <nuttx/cancelpt.h>
|
|
#include <nuttx/signal.h>
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: sigwaitinfo
|
|
*
|
|
* Description:
|
|
* This function is equivalent to sigtimedwait with a NULL timeout
|
|
* parameter.
|
|
*
|
|
* Input Parameters:
|
|
* set - The pending signal set
|
|
* info - The returned value
|
|
*
|
|
* Returned Value:
|
|
* Signal number that cause the wait to be terminated, otherwise -1 (ERROR)
|
|
* is returned and the errno variable is set appropriately.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int sigwaitinfo(FAR const sigset_t *set, FAR struct siginfo *info)
|
|
{
|
|
int ret;
|
|
|
|
/* sigwaitinfo() is a cancellation point */
|
|
|
|
enter_cancellation_point();
|
|
|
|
/* Just a wrapper around nxsig_timedwait() */
|
|
|
|
ret = nxsig_timedwait(set, info, NULL);
|
|
if (ret < 0)
|
|
{
|
|
set_errno(-ret);
|
|
ret = ERROR;
|
|
}
|
|
|
|
leave_cancellation_point();
|
|
return ret;
|
|
}
|