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()
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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()
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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()
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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