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/* ----------------------------------------------------------------------------
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* Copyright (c) Huawei Technologies Co., Ltd. 2013-2020. All rights reserved.
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* Description: Cpup HeadFile
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* Author: Huawei LiteOS Team
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* Create: 2013-01-01
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior written
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* permission.
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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 LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* --------------------------------------------------------------------------- */
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#ifndef _LOS_CPUP_PRI_H
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#define _LOS_CPUP_PRI_H //防止多次包含同一个头文件//
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#include "los_cpup.h" //可能包含了一些与CPU使用率//
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#include "los_task_pri.h" //统计相关的公共声明和定义//
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#ifdef __cplusplus
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#if __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#endif /* __cplusplus */
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#define OS_CPUP_HISTORY_RECORD_NUM 11 //定义历史记录的数量为11//
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#define LOS_CPUP_PRECISION 1000 //定义CPU使用率的精度为1000//
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#define LOS_CPUP_PRECISION_MULT (LOS_CPUP_PRECISION / 100) //可能用于计算CPU使用率//
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typedef struct {
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UINT32 id; /* Task ID */
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UINT16 status; /* Task status */
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UINT64 allTime; /* Total running time */
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UINT64 startTime; /* Time before a task is invoked */
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UINT64 historyTime[OS_CPUP_HISTORY_RECORD_NUM + 1]; /* Historical running time, the last one saves zero */
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} OsCpupCB;
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extern OsCpupCB *OsCpupCBGet(UINT32 index); //根据索引获取 `OsCpupCB` 结构体指针//
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extern UINT32 OsCpupInit(VOID); //CPU使用率统计模块的初始化函数//
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extern VOID OsCpupSetCycle(UINT64 startCycles); //设置CPU周期计数//
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extern UINT64 OsCpupGetCycle(VOID); //获取CPU周期计数//
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extern VOID OsTaskCycleStart(VOID); //任务运行周期的起始//
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extern VOID OsTaskCycleEnd(VOID); //任务运行周期的结束//
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extern VOID OsTaskCycleEndStart(const LosTaskCB *newTask); //更新任务运行周期，并开始新的任务周期//
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#ifdef LOSCFG_CPUP_INCLUDE_IRQ
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VOID OsCpupIrqStart(VOID); //在前一条条件定义下，用于处理//
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VOID OsCpupIrqEnd(UINT32); //中断的CPU使用率统计函数//
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#endif
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#ifdef __cplusplus
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#if __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __cplusplus */
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#endif /* _LOS_CPUP_PRI_H */
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/*这段代码定义了一些用于CPU使用率统计的数据结构和函数声明，
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用于在操作系统中实现对任务和中断的CPU利用率进行监控和统计。*/ |
