使用磁盘调度算法对磁盘调度实现代码
时间: 2024-06-18 15:02:24 浏览: 103
磁盘调度算法是用于管理磁盘上的I/O请求的一种算法,其目的是提高磁盘读写操作的效率和吞吐量。常见的磁盘调度算法有:FCFS(先来先服务)、SSTF(最短寻道时间优先)、SCAN(扫描)、C-SCAN(循环扫描)等。
以下是一个简单的磁盘调度实现代码,以SSTF算法为例:
```
#include <iostream>
#include <algorithm>
#include <vector>
#include <cmath>
using namespace std;
int main() {
vector<int> requests = {50, 82, 170, 43, 140, 24, 16, 190}; // I/O请求队列
int head_pos = 100; // 磁头起始位置
int total_distance = 0; // 总移动距离
while (!requests.empty()) {
int min_distance = INT_MAX;
int min_index = -1;
for (int i = 0; i < requests.size(); i++) {
int distance = abs(head_pos - requests[i]);
if (distance < min_distance) {
min_distance = distance;
min_index = i;
}
}
total_distance += min_distance;
head_pos = requests[min_index];
requests.erase(requests.begin() + min_index);
}
cout << "Total distance: " << total_distance << endl;
return 0;
}
```
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