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QBugHunter

Python2.7 线程结束后的函数调用

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  •   QBugHunter Apr 1, 2021 1797 views
    This topic created in 1851 days ago, the information mentioned may be changed or developed.

    首先是个线程类

    class MyThread(threading.Thread): allName = [] def __init__(self): threading.Thread.__init__(self) def run(self): pass def printMyName(self, nm): self.allName.append(nm) for n in self.allName: print n 

    然后有个类会回调用该函数,类似观察者模式

    class OB funPtr = [] def __init__(self): print "请不要初始化该类" @classmethod def registerPtr(cls, ptr): funPtr.append(ptr) @classmethod def callBackPtr(cls, nm): for ptr in cls.funPtr: ptr(nm) 

    然后 OB 类回不断有下列调用

    A = MyThread() OB.register(A.printMyName) A.start() # 线程运行结束 OB.callBackPtr("Jack") # 这个调用时,线程类对象 A 已经运行完了 

    我想问下,这种情况下,线程 A 的 run 函数以及跑完的情况下,OB 类再调用对象 A 的 printMyName ()安全吗?

    另外我想了一个方案,测试可行,但我不确定是否有问题,首先再 OB 类加了一个 unregister()函数

     @classmethod def unregister(cls, ptr): index = -1 for p int cls.funPtr: if p == ptr: break index += 1 if index != -1: del cls.funPtr[index] 

    然后在线程的 run 函数最后加一句

    OB.unregister(self.printMyName) 
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