在linux系统中,使用vim或者sublime_text编辑器,编写FCFS算法的程序代码,并实现以下功能: 1) 输出选择作业的次序: 2) 计算并输出平均作业周转时间; 3) 计算并输出平均带权
时间: 2024-12-18 20:31:32 浏览: 19
在Linux系统中,使用Vim或Sublime Text编辑器编写FCFS(First-Come, First-Served,先来先服务)调度算法的程序代码,可以参考以下伪代码示例:
```python
# 首先假设我们有一个Job类,包含开始时间和运行时间属性
class Job:
def __init__(self, start_time, runtime):
self.start_time = start_time
self.runtime = runtime
# FCFS调度函数
def fcfs(scheduling_order):
total_turnaround_time = 0
weighted_turnaround_time = 0
for job in scheduling_order:
# 假设jobs是一个按照到达顺序存储的列表
current_time = job.start_time
turnaround_time = current_time + job.runtime - job.start_time
total_turnaround_time += turnaround_time
weighted_turnaround_time += turnaround_time * job.runtime
print(f"Job {job.id}: Start at {current_time}, End at {current_time + job.runtime}")
average_turnaround_time = total_turnaround_time / len(scheduling_order)
average_weighted_turnaround_time = weighted_turnaround_time / len(scheduling_order)
print(f"Average Job Turnaround Time: {average_turnaround_time}")
print(f"Average Weighted Job Turnaround Time: {average_weighted_turnaround_time}")
# 示例使用
jobs = [Job(0, 5), Job(3, 8), Job(6, 4)]
fcfs(jobs)
```
在这个示例中,`fcfs`函数接收一个按到达时间排序的作业列表,然后依次调度每个作业并计算其周转时间和加权周转时间。
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