121 lines
3.5 KiB
C
121 lines
3.5 KiB
C
/****************************************************************************
|
|
* sched/group/group_continue.c
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* 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 <sys/types.h>
|
|
#include <stdint.h>
|
|
#include <sched.h>
|
|
#include <pthread.h>
|
|
|
|
#include <nuttx/sched.h>
|
|
|
|
#include "sched/sched.h"
|
|
#include "group/group.h"
|
|
|
|
#ifdef HAVE_GROUP_MEMBERS
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: group_continue_handler
|
|
*
|
|
* Description:
|
|
* Callback from group_foreachchild that handles one member of the group.
|
|
*
|
|
* Input Parameters:
|
|
* pid - The ID of the group member that may be resumed.
|
|
* arg - Unused
|
|
*
|
|
* Returned Value:
|
|
* 0 (OK) always
|
|
*
|
|
****************************************************************************/
|
|
|
|
static int group_continue_handler(pid_t pid, FAR void *arg)
|
|
{
|
|
FAR struct tcb_s *tcb = this_task();
|
|
FAR struct tcb_s *rtcb;
|
|
|
|
/* Resume all threads */
|
|
|
|
rtcb = nxsched_get_tcb(pid);
|
|
if (rtcb != NULL)
|
|
{
|
|
/* Remove the task from waitting list */
|
|
|
|
nxsched_remove_blocked(rtcb);
|
|
|
|
/* Add the task to ready-to-run task list and
|
|
* perform the context switch if one is needed
|
|
*/
|
|
|
|
if (nxsched_add_readytorun(rtcb))
|
|
{
|
|
up_switch_context(rtcb, tcb);
|
|
}
|
|
}
|
|
|
|
/* Always return zero. We need to visit each member of the group */
|
|
|
|
return OK;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: group_continue
|
|
*
|
|
* Description:
|
|
* Resume all members of the task group. This is SIGCONT default signal
|
|
* action logic.
|
|
* Note: this function should used within critical_section
|
|
*
|
|
* Input Parameters:
|
|
* tcb - TCB of the task to be retained.
|
|
*
|
|
* Returned Value:
|
|
* None
|
|
*
|
|
****************************************************************************/
|
|
|
|
int group_continue(FAR struct tcb_s *tcb)
|
|
{
|
|
irqstate_t flags;
|
|
int ret;
|
|
|
|
flags = enter_critical_section();
|
|
ret = group_foreachchild(tcb->group, group_continue_handler, NULL);
|
|
leave_critical_section(flags);
|
|
return ret;
|
|
}
|
|
|
|
#endif /* HAVE_GROUP_MEMBERS */
|