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C语言中的计时器\计数器用于费率计算？

发布于 2024-08-26 18:37:38 字数 277 浏览 6 评论 0原文

需要一个运行（移动、滚动）平均算法来计算传入的 5 分钟平均位。我所需要处理的只是传入位的累积值。

例如：我从 0 位开始， 5 分钟后，我有 10 位，所以我的平均值是 10 位。 5 分钟后，我有 15 位，所以现在我的平均值是 7.5 位。又过 5 分钟后，我有 30 位，所以我现在的平均值是 10.8 位。

我的问题是，如何在 C++ 中实现计时器\计数器，以便它以精确的 5 分钟间隔轮询位值？显然我不能使用延迟300秒。但是我可以在后台创建一个计时器，每 5 分钟只触发一个事件（轮询位值）吗？

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笑饮青盏花 2024-09-02 18:37:38

我之前答案的代码

#define REENTRANT
//The above is neccessary when using threads. This must be defined before any includes are made
//Often times, gcc -DREENTRANT is used instead of this, however, it produces the same effect

#include <pthread.h>

char running=1;

void* timer(void* dump){
    unsigned char i=0;
    while(running){
        for(i=0;i<300 && running;i++){
            sleep(1);//so we don't need to wait the 300 seconds when we want to quit
        }
        if(running)
           callback();//note that this is called from a different thread from main()
    }
    pthread_exit(NULL);
}

    int main(){
    pthread_t thread;
    pthread_create(&thread,NULL,timer,NULL);
    //do some stuff
    running=0;
    pthread_join(thread,NULL);//we told it to stop running, however, we might need to wait literally a second
    pthread_exit(NULL);
    return 0;
}

The Code to my Previous Answer

#define REENTRANT
//The above is neccessary when using threads. This must be defined before any includes are made
//Often times, gcc -DREENTRANT is used instead of this, however, it produces the same effect

#include <pthread.h>

char running=1;

void* timer(void* dump){
    unsigned char i=0;
    while(running){
        for(i=0;i<300 && running;i++){
            sleep(1);//so we don't need to wait the 300 seconds when we want to quit
        }
        if(running)
           callback();//note that this is called from a different thread from main()
    }
    pthread_exit(NULL);
}

    int main(){
    pthread_t thread;
    pthread_create(&thread,NULL,timer,NULL);
    //do some stuff
    running=0;
    pthread_join(thread,NULL);//we told it to stop running, however, we might need to wait literally a second
    pthread_exit(NULL);
    return 0;
}

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