使用C语言编写一段linux操作系统可以使用的优先级调度算法

好的，下面是一段使用C语言编写的优先级调度算法的伪代码：

#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 priority;       // 优先级
    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;

// 优先级调度算法
void priority_scheduling(Process *processes, int n) {
    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 (!flag) {    // 第一次找到进程
                    current_process = &processes[i];
                    flag = 1;
                } else {    // 找到优先级更高的进程
                    if (processes[i].priority < current_process->priority) {
                        next_process = current_process;
                        current_process = &processes[i];
                    } else {
                        next_process = &processes[i];
                    }
                }
            }
        }
        if (!flag) {    // 所有进程都已完成
            break;
        }
        if (current_process->remaining_time == current_process->burst_time) { // 进程开始运行
            current_process->started = 1;
            current_process->waiting_time = time - current_process->arrival_time;
        }
        current_process->remaining_time--;
        if (current_process->remaining_time == 0) { // 进程执行完毕
            current_process->finish_time = time + 1;
            current_process->turnaround_time = current_process->finish_time - current_process->arrival_time;
            finished[current_process - processes] = 1;
            total_time += current_process->turnaround_time;
            current_process = NULL;
        }
        for (j = time + 1; j < n; j++) {
            flag = 0;
            for (k = 0; k < n; k++) {
                if (processes[k].arrival_time <= j && !finished[k]) {
                    flag = 1;
                    break;
                }
            }
            if (flag) { // 找到下一个要执行的进程
                next_process = &processes[k];
                break;
            }
        }
        if (current_process != NULL && next_process != NULL && current_process->priority > next_process->priority) { // 把进程放到队列的末尾
            processes[n] = *current_process;
            n++;
            current_process = NULL;
        }
        time++;
    }
    printf("Average Turnaround Time: %.2f\n", (float)total_time / n);
    free(finished);
}

int main() {
    int n, i;
    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, burst time and priority of process %d: ", i + 1);
        scanf("%s %d %d %d", processes[i].name, &processes[i].arrival_time, &processes[i].burst_time, &processes[i].priority);
        processes[i].remaining_time = processes[i].burst_time;
        processes[i].started = 0;
    }
    priority_scheduling(processes, n);
    free(processes);

    return 0;
}

这段代码实现了一个简单的优先级调度算法，用于调度进程的执行顺序。它会根据每个进程的到达时间、执行时间和优先级进行调度，以最小化平均周转时间。