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nuttx/sched: move reprioritize process to public function

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zhangyuan21
2022-11-15 10:05:50 +08:00
committed by Masayuki Ishikawa
parent 08f7152d9f
commit 5c1b518314
51 changed files with 133 additions and 3461 deletions
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arch/sparc/src/common/Make.defs
+1 -1
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@@ -26,7 +26,7 @@ CMN_CSRCS += up_createstack.c up_doirq.c up_exit.c up_idle.c up_initialize.c
CMN_CSRCS += up_initialstate.c up_irq.c up_lowputs.c
CMN_CSRCS += up_mdelay.c up_modifyreg8.c up_modifyreg16.c up_modifyreg32.c
CMN_CSRCS += up_nputs.c up_releasepending.c up_releasestack.c
CMN_CSRCS += up_reprioritizertr.c up_schedulesigaction.c up_sigdeliver.c
CMN_CSRCS += up_schedulesigaction.c up_sigdeliver.c
CMN_CSRCS += up_stackframe.c up_swint1.c up_udelay.c up_unblocktask.c up_usestack.c
# Configuration-dependent common files
arch/sparc/src/sparc_v8/up_reprioritizertr.c
-175
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@@ -1,175 +0,0 @@
/****************************************************************************
* arch/sparc/src/sparc_v8/up_reprioritizertr.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 <stdint.h>
#include <stdbool.h>
#include <sched.h>
#include <syscall.h>
#include <assert.h>
#include <debug.h>
#include <nuttx/arch.h>
#include <nuttx/sched.h>
#include "sched/sched.h"
#include "up_internal.h"
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_reprioritize_rtr
*
* Description:
* Called when the priority of a running or
* ready-to-run task changes and the reprioritization will
* cause a context switch. Two cases:
*
* 1) The priority of the currently running task drops and the next
* task in the ready to run list has priority.
* 2) An idle, ready to run task's priority has been raised above the
* the priority of the current, running task and it now has the
* priority.
*
* Input Parameters:
* tcb: The TCB of the task that has been reprioritized
* priority: The new task priority
*
****************************************************************************/
void up_reprioritize_rtr(struct tcb_s *tcb, uint8_t priority)
{
/* Verify that the caller is sane */
if (tcb->task_state < FIRST_READY_TO_RUN_STATE ||
tcb->task_state > LAST_READY_TO_RUN_STATE
#if SCHED_PRIORITY_MIN > 0
|| priority < SCHED_PRIORITY_MIN
#endif
#if SCHED_PRIORITY_MAX < UINT8_MAX
|| priority > SCHED_PRIORITY_MAX
#endif
)
{
DEBUGPANIC();
}
else
{
struct tcb_s *rtcb = this_task();
bool switch_needed;
sinfo("TCB=%p PRI=%d\n", tcb, priority);
/* Remove the tcb task from the ready-to-run list.
* nxsched_remove_readytorun will return true if we just
* remove the head of the ready to run list.
*/
switch_needed = nxsched_remove_readytorun(tcb, false);
/* Setup up the new task priority */
tcb->sched_priority = (uint8_t)priority;
/* Return the task to the specified blocked task list.
* nxsched_add_readytorun will return true if the task was
* added to the new list. We will need to perform a context
* switch only if the EXCLUSIVE or of the two calls is non-zero
* (i.e., one and only one the calls changes the head of the
* ready-to-run list).
*/
switch_needed ^= nxsched_add_readytorun(tcb);
/* Now, perform the context switch if one is needed */
if (switch_needed)
{
/* If we are going to do a context switch, then now is the right
* time to add any pending tasks back into the ready-to-run list.
* task list now
*/
if (g_pendingtasks.head)
{
nxsched_merge_pending();
}
/* Update scheduler parameters */
nxsched_suspend_scheduler(rtcb);
/* Are we in an interrupt handler? */
if (CURRENT_REGS)
{
/* Yes, then we have to do things differently.
* Just copy the CURRENT_REGS into the OLD rtcb.
*/
up_savestate(rtcb->xcp.regs);
/* Restore the exception context of the rtcb at the (new) head
* of the ready-to-run task list.
*/
rtcb = this_task();
/* Update scheduler parameters */
nxsched_resume_scheduler(rtcb);
/* Then switch contexts */
up_restorestate(rtcb->xcp.regs);
}
/* No, then we will need to perform the user context switch */
else
{
struct tcb_s *nexttcb = this_task();
/* Update scheduler parameters */
nxsched_resume_scheduler(nexttcb);
/* Switch context to the context of the task at the head of the
* ready to run list.
*/
up_switchcontext(rtcb->xcp.regs, nexttcb->xcp.regs);
/* up_switchcontext forces a context switch to the task at the
* head of the ready-to-run list. It does not 'return' in the
* normal sense. When it does return,it is because the blocked
* task is again ready to run and has execution priority.
*/
}
}
}
}