帮我检查一下上面的代码
时间: 2023-08-28 16:30:15 浏览: 94
需要看的代码
很抱歉,我刚才回答的内容有误,因为我误以为您提供的是一段完整的代码。在您提供的代码中,有如下几个问题:
1. 没有 `State` 类型定义,需要添加。
2. `time_slice_scheduling` 函数没有缩进,需要缩进。
3. `current_process.run(time_slice)` 中的 `run` 方法没有给出定义,需要添加。
4. `return [p.end_time - p.start_time for p in processes],[(p.end_time - p.start_time) / p.cpu_time for p in processes],time_slice` 中的 `cpu_time` 没有给出定义,需要确认其定义。
5. `ready_queue = processes.copy()` 中的 `copy` 方法应该改为 `deepcopy` 方法,以确保复制得到的是列表中元素的副本而不是引用。
6. `if len(ready_queue) == processes_in_queue and current_process.rest_of_time > 0: ready_queue.append(current_process)` 这个判断没有意义,因为进程队列中的进程数不可能大于等于之前的进程数,所以可以删去。
7. 在每个进程的状态转换处,需要添加对该进程状态的输出,以便于调试。
8. `ready_queue.pop(0)` 取出队列中第一个元素并删除时,如果队列为空会抛出 `IndexError` 异常,需要添加对队列非空的判断。
9. `current_process.end_time = current_time` 这里记录的结束时间是进程最后一次运行的结束时间,需要改为记录进程运行完毕的时间。
综上所述,以下是修改后的代码:
```python
import copy
from enum import Enum
class State(Enum):
NEW = 1
RUNNING = 2
TERMINATED = 3
class Process:
def __init__(self, cpu_time):
self.state = State.NEW
self.cpu_time = cpu_time
self.rest_of_time = cpu_time
self.runtime = 0
self.start_time = 0
self.end_time = 0
def run(self, time_slice):
self.rest_of_time -= time_slice
self.runtime += time_slice
if self.rest_of_time <= 0:
self.state = State.TERMINATED
else:
self.state = State.RUNNING
def time_slice_scheduling(processes, time_slice):
current_time = 0
ready_queue = copy.deepcopy(processes)
while any(p.state != State.TERMINATED for p in ready_queue):
processes_in_queue = len(ready_queue)
current_process = ready_queue.pop(0) if ready_queue else None
if current_process is None:
current_time += time_slice
continue
if current_process.state == State.TERMINATED:
continue
if current_process.state == State.NEW:
current_process.state = State.RUNNING
current_process.runtime = 0
current_process.start_time = current_time
current_process.run(time_slice)
current_time += time_slice
if current_process.state == State.TERMINATED:
current_process.end_time = current_time
print(f"Process {processes.index(current_process)} terminated at time {current_time}")
elif current_process.state == State.RUNNING and current_process.rest_of_time > 0:
ready_queue.append(current_process)
print(f"Process {processes.index(current_process)} state is {current_process.state} at time {current_time}")
return [p.end_time - p.start_time for p in processes],[(p.end_time - p.start_time) / p.cpu_time for p in processes],time_slice
```
希望能对您有所帮助。
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