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/************************************************************
* sig_pending.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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 Gregory Nutt 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 <sys/types.h>
#include <signal.h>
#include <sched.h>
#include "os_internal.h"
#include "sig_internal.h"
/************************************************************
* Definitions
************************************************************/
/************************************************************
* Private Type Declarations
************************************************************/
/************************************************************
* Global Variables
************************************************************/
/************************************************************
* Private Variables
************************************************************/
/************************************************************
* Private Function Prototypes
************************************************************/
/************************************************************
* Public Functions
************************************************************/
/************************************************************
* Function: sigpending
*
* Description:
* This function stores the returns the set of signals that
* are blocked for delivery and that are pending for the
* calling process in the space pointed to by set.
*
* Parameters:
* set - The location to return the pending signal set.
*
* Return Value:
* 0 (OK) or -1 (ERROR)
*
* Assumptions:
*
************************************************************/
int sigpending(sigset_t *set)
{
FAR _TCB *rtcb = (FAR _TCB*)g_readytorun.head;
int ret = ERROR;
if (set)
{
*set = sig_pendingset(rtcb);
ret = OK;
}
return ret;
}
/************************************************************
* Function: sig_pendingset
*
* Description:
* Convert the list of pending signals into a signal set
************************************************************/
sigset_t sig_pendingset(FAR _TCB *stcb)
{
sigset_t sigpendset;
FAR sigpendq_t *sigpend;
irqstate_t saved_state;
sigpendset = NULL_SIGNAL_SET;
saved_state = irqsave();
for (sigpend = (FAR sigpendq_t*)stcb->sigpendingq.head;
(sigpend); sigpend = sigpend->flink)
{
sigaddset(&sigpendset, sigpend->info.si_signo);
}
irqrestore(saved_state);
return sigpendset;
}
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