eb9030c891
Most tools used for compliance and SBOM generation use SPDX identifiers This change brings us a step closer to an easy SBOM generation. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
92 lines
3.1 KiB
C
92 lines
3.1 KiB
C
/****************************************************************************
|
|
* sched/sched/sched_reprioritize.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 <stdint.h>
|
|
#include <sched.h>
|
|
#include <errno.h>
|
|
|
|
#include <nuttx/sched.h>
|
|
|
|
#include "sched/sched.h"
|
|
|
|
#ifdef CONFIG_PRIORITY_INHERITANCE
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: nxsched_reprioritize
|
|
*
|
|
* Description:
|
|
* This function sets the priority of a specified task.
|
|
*
|
|
* NOTE: Setting a task's priority to the same value has a similar effect
|
|
* to sched_yield() -- The task will be moved to after all other tasks
|
|
* with the same priority.
|
|
*
|
|
* Input Parameters:
|
|
* tcb - the TCB of task to reprioritize.
|
|
* sched_priority - The new task priority
|
|
*
|
|
* Returned Value:
|
|
* On success, sched_reporioritize() returns 0 (OK). On error, a negated
|
|
* errno value is returned.
|
|
*
|
|
* EINVAL The parameter 'param' is invalid or does not make sense for the
|
|
* current scheduling policy.
|
|
* EPERM The calling task does not have appropriate privileges.
|
|
* ESRCH The task whose ID is pid could not be found.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int nxsched_reprioritize(FAR struct tcb_s *tcb, int sched_priority)
|
|
{
|
|
/* This function is equivalent to nxsched_set_priority() BUT it also has
|
|
* the side effect of discarding all priority inheritance history. This
|
|
* is done only on explicit, user-initiated reprioritization.
|
|
*/
|
|
|
|
int ret = nxsched_set_priority(tcb, sched_priority);
|
|
if (ret == 0)
|
|
{
|
|
/* Reset the base_priority -- the priority that the thread would return
|
|
* to once it posts the semaphore.
|
|
*/
|
|
|
|
tcb->base_priority = (uint8_t)sched_priority;
|
|
|
|
/* Discard priority boost as well */
|
|
|
|
tcb->boost_priority = 0;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
#endif /* CONFIG_PRIORITY_INHERITANCE */
|