python怎样终止线程
yang
2020-12-11 13:51:1017159浏览 · 0收藏 · 0评论
在python中启动和关闭线程：
一、启动线程
首先导入threading
import threading
然后定义一个方法
def serial_read(): ... ...
然后定义线程，target指向要执行的方法
myThread = threading.Thread(target=serial_read)
启动它
myThread.start()
二、停止线程
import inspect
import ctypes
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)停止线程
stop_thread(myThread)
stop方法可以强行终止正在运行或挂起的线程。
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