如何结束Python的子线程和子进程
结束子线程的方法:
这个是搬运其他大神的代码,鄙人也不知道原理,反正拿来主义,暂时没发现什么缺点,先用着再说。
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import inspect import ctypes import threading from time import sleep def serial_read(): while True : print ( "春哥纯爷们!" ) sleep( 1 ) def _async_raise(tid, exctype): """raises the exception, performs cleanup if needed""" tid = ctypes.c_long(tid) if not inspect.isclass(exctype): exctype = type (exctype) res = ctypes.pythonapi.PyThreadState_SetAsyncExc(tid, ctypes.py_object(exctype)) if res = = 0 : raise ValueError( "invalid thread id" ) elif res ! = 1 : # """if it returns a number greater than one, you're in trouble, # and you should call it again with exc=NULL to revert the effect""" ctypes.pythonapi.PyThreadState_SetAsyncExc(tid, None ) raise SystemError( "PyThreadState_SetAsyncExc failed" ) def stop_thread(thread): _async_raise(thread.ident, SystemExit) def Air(): ords = 0 myThread = threading.Thread(target = serial_read) myThread.start() while True : ords + = 1 if ords = = 10 : stop_thread(myThread) print ( "停止子线程" ) break sleep( 1 ) if __name__ = = '__main__' : Air() |
下面是结束子进程的方法:
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import inspect import ctypes from time import sleep from multiprocessing import Process def serial_read(): while True : print ( "春哥纯爷们!" ) sleep( 1 ) def Air(): ords = 0 myThread = Process(target = serial_read) myThread.start() while True : ords + = 1 if ords = = 10 : myThread.terminate() print ( "停止子进程" ) break sleep( 1 ) if __name__ = = '__main__' : Air() |
这里说一下如果用类的话要如何写,想结束子进程或者子线程就需要拿到进程对象或者线程对象,但是类中没办法实现创建一个类属性的方式然后用self.×××的方式来在其他类方法中调用,这时候就创建一个类属性list,然后创建好子进程或者子线程后把对象赋值给这个list,再在类的其他方法中调用这个list中的元素,就拿到了子进程或者子线程的对象了。
例如:
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def startss( self ,a1,b1,c1,under,rough,blue,among): # 创建新线程 p1 = threading.Thread(target = self .line01,args = (a1,b1,under,rough,)) #必须加,号 p2 = threading.Thread(target = self .line02,args = (a1,c1,under,blue,)) p3 = Process(target = self .Process01,args = (under,rough,blue,)) #计算进程 #among是类属性list容器 among.append(p1) among.append(p2) among.append(p3) # 开启新线程 p1.start() p2.start() #开启计算用进程 p3.start() |
参考资料:http://www.zzvips.com/article/210680.html
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原文链接:https://blog.csdn.net/l198738655/article/details/117902289