书写C语言代码,分别实现模拟时间片轮转算法和高优先级算法进行进程调度。要求有选择菜单,最后计算出平均周转时间和带权平均周转时间
时间: 2024-11-06 16:24:02 浏览: 2
在C语言中,我们可以使用结构体和函数来实现这两个进程调度算法。这里我会简单地给出示例代码,首先创建一个进程结构体,然后分别实现时间片轮转(TSRR)和高优先级优先级队列(HFPPQ)算法。
```c
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
typedef struct Process {
int pid;
int burst_time; // 进程运行所需的时间
int priority; // 优先级
} Process;
void time_slice_round_robin(Process processes[], int n, int quantum) {
Process *current = &processes[0];
clock_t start, end;
while (1) {
start = clock();
current->burst_time -= quantum;
if (current->burst_time <= 0) {
printf("Process %d finished with turnaround time %ld\n", current->pid, (end - start) / CLOCKS_PER_SEC);
break;
}
// 将当前进程移到队尾,继续下一轮
for (int i = n - 1; i > 0; i--) {
if (processes[i].burst_time <= 0)
swap(processes[i], processes[i - 1]);
}
}
}
void high_priority_queue(Process processes[], int n) {
// 使用堆数据结构来存储优先级队列
// ... (这里省略堆的具体实现部分)
// 遍历每个进程,按照优先级调度
for (int i = 0; i < n; i++) {
// ... (这里处理调度操作)
printf("Process %d started with priority %d\n", processes[i].pid, processes[i].priority);
}
}
int main() {
Process processes[] = { /* 初始化进程数组 */ };
int n = sizeof(processes) / sizeof(processes[0]);
// 选择调度算法
int choice;
printf("Select a scheduling algorithm:\n");
printf("1. Time Slice Round Robin (TSRR)\n");
printf("2. High Priority Queue (HFPPQ)\n");
scanf("%d", &choice);
switch (choice) {
case 1:
printf("Enter quantum time in seconds: ");
int quantum;
scanf("%d", &quantum);
time_slice_round_robin(processes, n, quantum);
break;
case 2:
high_priority_queue(processes, n);
break;
default:
printf("Invalid choice.\n");
return 1;
}
// 计算周转时间和带权周转时间,这需要额外的数据记录,这里简化了
// ... (这里计算并输出周转时间和带权周转时间)
return 0;
}
```
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