103 lines
2.9 KiB
C
103 lines
2.9 KiB
C
/****************************************************************************
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* sched/task/task_activate.c
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*
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* SPDX-License-Identifier: Apache-2.0
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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 <sched.h>
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#include <debug.h>
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#include <nuttx/irq.h>
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#include <nuttx/sched.h>
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#include <nuttx/arch.h>
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#include <nuttx/sched_note.h>
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#include "sched/sched.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxtask_activate
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*
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* Description:
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* This function activates tasks initialized by nxtask_setup_scheduler().
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* Without activation, a task is ineligible for execution by the
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* scheduler.
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*
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* Input Parameters:
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* tcb - The TCB for the task for the task (same as the nxtask_init
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* argument).
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void nxtask_activate(FAR struct tcb_s *tcb)
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{
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irqstate_t flags = enter_critical_section();
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FAR struct tcb_s *rtcb = this_task();
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#ifdef CONFIG_SCHED_INSTRUMENTATION
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/* Check if this is really a re-start */
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if (tcb->task_state != TSTATE_TASK_INACTIVE)
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{
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/* Inform the instrumentation layer that the task
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* has stopped
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*/
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sched_note_stop(tcb);
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}
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/* Inform the instrumentation layer that the task
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* has started
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*/
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sched_note_start(tcb);
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#endif
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/* Remove the task from waitting list */
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nxsched_remove_blocked(tcb);
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sinfo("%s pid=%d,TCB=%p\n", get_task_name(tcb),
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tcb->pid, tcb);
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/* Add the task to ready-to-run task list, and
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* perform the context switch if one is needed
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*/
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if (nxsched_add_readytorun(tcb))
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{
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up_switch_context(tcb, rtcb);
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}
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leave_critical_section(flags);
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}
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