编写和调试一个进程调度程序，实现基于优先权的进程调度算法和基于时间片轮转调度算法

好的，我会尽力回答你的问题。首先，进程调度程序是操作系统中非常重要的一部分，它负责决定哪些进程可以运行，并在何时运行。基于优先权的进程调度算法和基于时间片轮转调度算法是两种常见的调度算法。

基于优先权的进程调度算法：

该算法根据进程的优先级来决定哪个进程应该先执行。每个进程都有一个优先级，通常会分配一个较高的优先级给需要优先执行的进程，例如交互式进程或实时进程。当有多个进程处于就绪状态时，调度程序会选择优先级最高的进程来执行。

以下是一个基于优先权的进程调度程序的示例代码：

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

#define MAX_PROCESS 10

typedef struct process {
    int pid; // 进程ID
    int priority; // 进程优先级
    int burst_time; // 进程运行时间
    int waiting_time; // 进程等待时间
    int turnaround_time; // 进程周转时间
} Process;

void priority_scheduling(Process processes[], int n) {
    int total_burst_time = 0;
    float avg_waiting_time = 0;
    float avg_turnaround_time = 0;
    int i, j;

    // 计算总的运行时间
    for (i = 0; i < n; i++) {
        total_burst_time += processes[i].burst_time;
    }

    // 按照优先级排序
    for (i = 0; i < n - 1; i++) {
        for (j = i + 1; j < n; j++) {
            if (processes[i].priority < processes[j].priority) {
                Process temp = processes[i];
                processes[i] = processes[j];
                processes[j] = temp;
            }
        }
    }

    // 计算等待时间和周转时间
    int current_time = 0;
    for (i = 0; i < n; i++) {
        processes[i].waiting_time = current_time;
        processes[i].turnaround_time = processes[i].waiting_time + processes[i].burst_time;
        current_time += processes[i].burst_time;
    }

    // 计算平均等待时间和平均周转时间
    for (i = 0; i < n; i++) {
        avg_waiting_time += processes[i].waiting_time;
        avg_turnaround_time += processes[i].turnaround_time;
    }
    avg_waiting_time /= n;
    avg_turnaround_time /= n;

    printf("Process\tPriority\tBurst Time\tWaiting Time\tTurnaround Time\n");
    for (i = 0; i < n; i++) {
        printf("%d\t%d\t\t%d\t\t%d\t\t%d\n", processes[i].pid, processes[i].priority, processes[i].burst_time, processes[i].waiting_time, processes[i].turnaround_time);
    }
    printf("Average Waiting Time: %.2f\n", avg_waiting_time);
    printf("Average Turnaround Time: %.2f\n", avg_turnaround_time);
}

int main() {
    Process processes[MAX_PROCESS];
    int n, i;

    printf("Enter the number of processes: ");
    scanf("%d", &n);

    for (i = 0; i < n; i++) {
        printf("Enter the burst time and priority for process %d: ", i + 1);
        scanf("%d %d", &processes[i].burst_time, &processes[i].priority);
        processes[i].pid = i + 1;
    }

    priority_scheduling(processes, n);

    return 0;
}

基于时间片轮转调度算法：

该算法将进程按照就绪时间的先后顺序排好序，每个进程被分配一个时间片，当时间片用完后，进程就被放回队列的末尾。这个时间片通常是固定的，例如10毫秒。如果进程在时间片用完之前完成了，则它会被从队列中移除。如果进程在时间片用完之前还没有完成，则它会被放回队列的末尾，等待下一次调度。

以下是一个基于时间片轮转调度算法的示例代码：

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

#define MAX_PROCESS 10
#define TIME_QUANTUM 10

typedef struct process {
    int pid; // 进程ID
    int burst_time; // 进程运行时间
    int remaining_time; // 进程剩余时间
    int waiting_time; // 进程等待时间
    int turnaround_time; // 进程周转时间
} Process;

void round_robin_scheduling(Process processes[], int n) {
    int total_burst_time = 0;
    float avg_waiting_time = 0;
    float avg_turnaround_time = 0;
    int i, j;

    // 计算总的运行时间
    for (i = 0; i < n; i++) {
        total_burst_time += processes[i].burst_time;
        processes[i].remaining_time = processes[i].burst_time;
    }

    // 轮转调度
    int current_time = 0;
    while (1) {
        int all_done = 1;
        for (i = 0; i < n; i++) {
            if (processes[i].remaining_time > 0) {
                all_done = 0;
                if (processes[i].remaining_time > TIME_QUANTUM) {
                    current_time += TIME_QUANTUM;
                    processes[i].remaining_time -= TIME_QUANTUM;
                } else {
                    current_time += processes[i].remaining_time;
                    processes[i].waiting_time = current_time - processes[i].burst_time;
                    processes[i].remaining_time = 0;
                }
            }
        }
        if (all_done) break;
    }

    // 计算周转时间
    for (i = 0; i < n; i++) {
        processes[i].turnaround_time = processes[i].burst_time + processes[i].waiting_time;
    }

    // 计算平均等待时间和平均周转时间
    for (i = 0; i < n; i++) {
        avg_waiting_time += processes[i].waiting_time;
        avg_turnaround_time += processes[i].turnaround_time;
    }
    avg_waiting_time /= n;
    avg_turnaround_time /= n;

    printf("Process\tBurst Time\tWaiting Time\tTurnaround Time\n");
    for (i = 0; i < n; i++) {
        printf("%d\t\t%d\t\t%d\t\t%d\n", processes[i].pid, processes[i].burst_time, processes[i].waiting_time, processes[i].turnaround_time);
    }
    printf("Average Waiting Time: %.2f\n", avg_waiting_time);
    printf("Average Turnaround Time: %.2f\n", avg_turnaround_time);
}

int main() {
    Process processes[MAX_PROCESS];
    int n, i;

    printf("Enter the number of processes: ");
    scanf("%d", &n);

    for (i = 0; i < n; i++) {
        printf("Enter the burst time for process %d: ", i + 1);
        scanf("%d", &processes[i].burst_time);
        processes[i].pid = i + 1;
    }

    round_robin_scheduling(processes, n);

    return 0;
}

希望这些代码可以对你有所帮助！