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130 lines
4.5 KiB
130 lines
4.5 KiB
/**************************************************************************** |
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* sched/sig_pending.c |
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* |
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* Copyright (C) 2007-2009 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 "os_internal.h" |
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#include "sig_internal.h" |
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/**************************************************************************** |
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* 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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* 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 stores the returns the set of signals that are blocked |
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* for delivery and that are pending for the calling process in the space |
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* pointed to by 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 _TCB *rtcb = (FAR _TCB*)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 _TCB *stcb) |
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{ |
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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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sigpendset = NULL_SIGNAL_SET; |
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saved_state = irqsave(); |
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for (sigpend = (FAR sigpendq_t*)stcb->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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