nuttx/sched/signal/sig_findaction.c
Alin Jerpelea 8935ac4cc3 sched: Author Gregory Nutt: update licenses to Apache
Gregory Nutt has submitted the SGA and we can mograte the licenses
to Apache.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
2021-02-09 01:21:53 -08:00

66 lines
2.2 KiB
C

/****************************************************************************
* sched/signal/sig_findaction.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include "signal/signal.h"
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nxsig_find_action
*
* Description:
* Allocate a new element for a signal queue
*
****************************************************************************/
FAR sigactq_t *nxsig_find_action(FAR struct task_group_s *group, int signo)
{
FAR sigactq_t *sigact = NULL;
/* Verify the caller's sanity */
if (group)
{
/* Sigactions can only be assigned to the currently executing
* thread. So, a simple lock ought to give us sufficient
* protection.
*/
sched_lock();
/* Search the list for a sigaction on this signal */
for (sigact = (FAR sigactq_t *)group->tg_sigactionq.head;
((sigact) && (sigact->signo != signo));
sigact = sigact->flink);
sched_unlock();
}
return sigact;
}