python模拟进程状态

1.代码展示

from transitions import Machine

# 定义一个自己的类

class Matter(object):

    pass

model = Matter()

# 状态定义

states=['New', 'Ready', 'Waiting', 'Running', 'Terminated']

# 定义状态转移

transitions = [

    {'trigger': 'Admitted', 'source': 'New', 'dest': 'Ready' },

    {'trigger': 'Dispatch', 'source': 'Ready', 'dest': 'Running'},

    {'trigger': 'Interrupt', 'source': 'Running', 'dest': 'Ready'},

    {'trigger': 'InputOutputoreventwait', 'source': 'Running', 'dest': 'Waiting'},

    {'trigger': 'InputOutputoreventcompletion', 'source': 'Waiting', 'dest': 'Ready'},

    {'trigger': 'Exit', 'source': 'Running', 'dest': 'Terminated'}]

# 初始化

machine = Machine(model=model, states=states, transitions=transitions, initial='New')

# Test 

print(model.state)   #New

# 状体转变

model.Admitted()

print(model.state)  #Ready

model.Dispatch()

print(model.state)  #Running

model.InputOutputoreventwait()

print(model.state)  #Waiting

model.InputOutputoreventcompletion()

print(model.state)  #Ready

model.Dispatch()

print(model.state)  #Running

model.Interrupt()

print(model.state)  #Ready

model.Dispatch()

print(model.state)  #Running

model.Exit()

print(model.state)  #Terminated

 

2.运行结果展示