134 lines
4.6 KiB
C
134 lines
4.6 KiB
C
/****************************************************************************
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* sched/signal/sig_pending.c
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*
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* Copyright (C) 2007-2009, 2013 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 <sched.h>
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#include "sched/sched.h"
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#include "signal/signal.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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* Public Data
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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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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: sigpending
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*
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* Description:
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* This function returns the set of signals that are blocked from deliveryi
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* and that are pending for the calling process in the space pointed to by
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* set.
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*
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* Parameters:
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* set - The location to return the pending signal set.
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*
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* Return Value:
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* 0 (OK) or -1 (ERROR)
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*
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* Assumptions:
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*
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****************************************************************************/
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int sigpending(FAR sigset_t *set)
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{
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FAR struct tcb_s *rtcb = (FAR struct tcb_s *)g_readytorun.head;
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int ret = ERROR;
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if (set)
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{
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*set = sig_pendingset(rtcb);
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ret = OK;
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}
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return ret;
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}
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/****************************************************************************
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* Name: sig_pendingset
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*
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* Description:
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* Convert the list of pending signals into a signal set
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*
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****************************************************************************/
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sigset_t sig_pendingset(FAR struct tcb_s *stcb)
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{
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FAR struct task_group_s *group = stcb->group;
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sigset_t sigpendset;
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FAR sigpendq_t *sigpend;
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irqstate_t saved_state;
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DEBUGASSERT(group);
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sigpendset = NULL_SIGNAL_SET;
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saved_state = irqsave();
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for (sigpend = (FAR sigpendq_t *)group->sigpendingq.head;
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(sigpend); sigpend = sigpend->flink)
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{
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sigaddset(&sigpendset, sigpend->info.si_signo);
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}
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irqrestore(saved_state);
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return sigpendset;
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}
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