utils.py

class Job:
    def __init__(self, name, arrival_time, service_time):
        self.name = name
        self.arrival_time = arrival_time
        self.service_time = service_time
        self.start_time = 0
        self.completion_time = 0
        self.turnaround_time = 0
        self.weighted_turnaround = 0

class Process:
    def __init__(self, name, arrival_time, burst_time, priority):
        self.name = name
        self.arrival_time = arrival_time
        self.burst_time = burst_time
        self.priority = priority
        self.completion_time = 0
        self.waiting_time = 0

class MemoryJob:
    def __init__(self, name, memory_size):
        self.name = name
        self.memory_size = memory_size

class FileNode:
    def __init__(self, name, is_directory=False, content="", owner=None):
        self.name = name
        self.is_directory = is_directory
        self.content = content if not is_directory else ""
        self.owner = owner  # 用户 ID (user_i)
        self.children = {} if is_directory else None  # 子节点（目录）
        self.permissions = {"read": True, "write": True} if not is_directory else None