使用C语言编写一段linux操作系统可以使用的时间片轮转法调度算法

好的，下面是一段使用C语言编写的时间片轮转法调度算法的伪代码：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

// 定义进程结构体
typedef struct Process {
    char name[10];      // 进程名
    int arrival_time;   // 到达时间
    int burst_time;     // 执行时间
    int remaining_time; // 剩余执行时间
    int turnaround_time;// 周转时间
    int waiting_time;   // 等待时间
    int finish_time;    // 完成时间
    int started;        // 标记是否已经开始运行
} Process;

// 时间片轮转法调度算法
void rr_scheduling(Process *processes, int n, int time_quantum) {
    int time = 0;                   // 当前时间
    int i, j, k, flag, total_time;
    Process *current_process;       // 当前正在运行的进程
    Process *next_process;          // 下一个要运行的进程
    int *finished = (int *)malloc(n * sizeof(int)); // 标记进程是否已经完成
    memset(finished, 0, n * sizeof(int));
    total_time = 0;

    while (1) {
        flag = 0;   // 标记是否有进程正在运行
        for (i = 0; i < n; i++) {
            if (processes[i].arrival_time <= time && !finished[i]) {
                if (!processes[i].started) {
                    processes[i].started = 1;
                    processes[i].waiting_time = time - processes[i].arrival_time;
                }
                current_process = &processes[i];
                flag = 1;
                break;
            }
        }
        if (!flag) {    // 所有进程都已完成
            break;
        }
        if (current_process->remaining_time <= time_quantum) { // 进程执行完毕
            next_process = NULL;
            current_process->remaining_time = 0;
            current_process->finish_time = time + current_process->remaining_time;
            current_process->turnaround_time = current_process->finish_time - current_process->arrival_time;
            finished[i] = 1;
            total_time += current_process->turnaround_time;
        } else {    // 进程还没有执行完毕
            next_process = current_process;
            next_process->remaining_time -= time_quantum;
        }
        for (j = time; j < time + time_quantum; j++) {
            flag = 0;
            for (k = 0; k < n; k++) {
                if (processes[k].arrival_time <= j && !finished[k]) {
                    flag = 1;
                    break;
                }
            }
            if (!flag) {    // 所有进程都已完成
                break;
            }
        }
        time = j;
        if (next_process != NULL) { // 把进程放到队列的末尾
            processes[n] = *next_process;
            n++;
        }
    }
    printf("Average Turnaround Time: %.2f\n", (float)total_time / n);
    free(finished);
}

int main() {
    int n, i, time_quantum;
    Process *processes;

    printf("Enter the number of processes: ");
    scanf("%d", &n);
    processes = (Process *)malloc(n * sizeof(Process));
    for (i = 0; i < n; i++) {
        printf("Enter the name, arrival time and burst time of process %d: ", i + 1);
        scanf("%s %d %d", processes[i].name, &processes[i].arrival_time, &processes[i].burst_time);
        processes[i].remaining_time = processes[i].burst_time;
        processes[i].started = 0;
    }
    printf("Enter the time quantum: ");
    scanf("%d", &time_quantum);
    rr_scheduling(processes, n, time_quantum);
    free(processes);

    return 0;
}

这段代码实现了一个简单的时间片轮转法调度算法，用于调度进程的执行顺序。它会根据每个进程的到达时间和执行时间进行调度，以最小化平均周转时间。