106 lines
2.9 KiB
C
106 lines
2.9 KiB
C
/****************************************************************************
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* sched/signal/sig_pending.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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 <assert.h>
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#include <nuttx/irq.h>
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#include <nuttx/signal.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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* 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 delivery
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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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* Input Parameters:
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* set - The location to return the pending signal set.
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*
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* Returned 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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if (set)
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{
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*set = nxsig_pendingset(NULL);
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return OK;
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}
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return ERROR;
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}
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/****************************************************************************
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* Name: nxsig_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 nxsig_pendingset(FAR struct tcb_s *stcb)
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{
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FAR struct task_group_s *group;
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sigset_t sigpendset;
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FAR sigpendq_t *sigpend;
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irqstate_t flags;
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if (stcb == NULL)
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{
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stcb = this_task();
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}
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group = stcb->group;
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DEBUGASSERT(group);
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sigpendset = NULL_SIGNAL_SET;
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flags = enter_critical_section();
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for (sigpend = (FAR sigpendq_t *)group->tg_sigpendingq.head;
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(sigpend); sigpend = sigpend->flink)
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{
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nxsig_addset(&sigpendset, sigpend->info.si_signo);
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}
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leave_critical_section(flags);
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return sigpendset;
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}
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