nuttx/libs/libc/sched/sched_getprioritymin.c
Xiang Xiao 631a8da1e2 sched: Map SCHED_OTHER to SCHED_FIFO or SCHED_RR
this behaviour is explicitly specified here:
https://pubs.opengroup.org/onlinepubs/009695399/functions/xsh_chap02_08.html
and map SCHED_NORMAL to SCHED_OTHER like Linux:
https://man7.org/linux/man-pages/man7/sched.7.html

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2023-01-30 03:01:03 +02:00

58 lines
2.0 KiB
C

/****************************************************************************
* libs/libc/sched/sched_getprioritymin.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 <assert.h>
#include <nuttx/arch.h>
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: sched_get_priority_min
*
* Description:
* This function returns the value of the lowest possible
* task priority for a specified scheduling policy.
*
* Input Parameters:
* policy - Scheduling policy requested.
*
* Returned Value:
* The minimum priority value or -1 (ERROR)
* (errno is not set)
*
* Assumptions:
*
****************************************************************************/
int sched_get_priority_min(int policy)
{
DEBUGASSERT(policy >= SCHED_OTHER && policy <= SCHED_SPORADIC);
return SCHED_PRIORITY_MIN;
}