cpu_manager.h
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/*
* Copyright 2002-2014 the original author or authors.
*
* Licensed 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
*
* CC/LICENSE
*
* 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.
*/
#ifndef _CPU_MANAGER_H_
#define _CPU_MANAGER_H_
#include "common.h"
class CpuManager {
public:
CpuManager();
virtual ~CpuManager();
struct CPU_INFO {
char name[20];
uint32_t user;
uint32_t nice;
uint32_t system;
uint32_t idle;
};
public:
static CpuManager* get_instance();
//获取cpu占用率
uint32_t get_cpu_occupy();
//计算CPU占用率线程 阻塞函数
void calculate_cpu_occupy_block_func();
private:
//获取cpu信息
void get_cpu_info(CPU_INFO* cpust);
//通过cpu信息进行计算
uint32_t calc_cpu_info(CPU_INFO* first, CPU_INFO* second);
private:
uint32_t _cpu_occupy;
pthread_rwlock_t _rwlock; //_cpu_occupy 变量的读写锁
};
#endif