107 lines
3.6 KiB
C
107 lines
3.6 KiB
C
/****************************************************************************
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* sched/sched/sched_resumescheduler.c
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*
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* Copyright (C) 2015 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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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 <assert.h>
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#include <nuttx/sched.h>
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#include <nuttx/clock.h>
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#include <nuttx/sched_note.h>
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#include "sched/sched.h"
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#if CONFIG_RR_INTERVAL > 0 || defined(CONFIG_SCHED_SPORADIC) || \
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defined(CONFIG_SCHED_INSTRUMENTATION)
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: sched_resume_scheduler
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*
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* Description:
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* Called by architecture specific implementations that block task
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* execution. This function prepares the scheduler for the thread that is
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* about to be restarted.
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*
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* Input Parameters:
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* tcb - The TCB of the thread to be restarted.
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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 sched_resume_scheduler(FAR struct tcb_s *tcb)
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{
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#if CONFIG_RR_INTERVAL > 0
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#ifdef CONFIG_SCHED_SPORADIC
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if ((tcb->flags & TCB_FLAG_POLICY_MASK) == TCB_FLAG_SCHED_RR)
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#endif
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{
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/* Reset the task's timeslice. */
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tcb->timeslice = MSEC2TICK(CONFIG_RR_INTERVAL);
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}
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#endif
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#ifdef CONFIG_SCHED_SPORADIC
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#if CONFIG_RR_INTERVAL > 0
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else
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#endif
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if ((tcb->flags & TCB_FLAG_POLICY_MASK) == TCB_FLAG_SCHED_SPORADIC)
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{
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/* Reset the replenishment cycle if it is appropriate to do so */
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DEBUGVERIFY(sched_sporadic_resume(tcb));
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}
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#endif
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#ifdef CONFIG_SCHED_INSTRUMENTATION
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/* Inidicate the the task has been resumed */
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sched_note_resume(tcb);
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#endif
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}
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#endif /* CONFIG_RR_INTERVAL > 0 || CONFIG_SCHED_SPORADIC || CONFIG_SCHED_INSTRUMENTATION */
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