e54b602208
It takes about 10 cycles to obtain the task list according to the task status. In most cases, we know the task status, so we can directly delete the task from the specified task list to reduce time consuming.
122 lines
3.5 KiB
C
122 lines
3.5 KiB
C
/****************************************************************************
|
|
* sched/group/group_continue.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 <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_unblock_task(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)
|
|
{
|
|
int ret;
|
|
|
|
/* Lock the scheduler so that there this thread will not lose priority
|
|
* until all of its children are suspended.
|
|
*/
|
|
|
|
sched_lock();
|
|
ret = group_foreachchild(tcb->group, group_continue_handler, NULL);
|
|
sched_unlock();
|
|
return ret;
|
|
}
|
|
|
|
#endif /* HAVE_GROUP_MEMBERS */
|