通过给线程里面抛异常来强制退出线程,以下程序为开启一个线程打印2秒的字符后强制线程结束
import serial
import threading
import time
import binascii
import struct
import ctypes
import inspect
def _async_raise(tid, exctype):
# todo 强制退出线程 忽略掉报错
try:
"""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")
except:
pass
def init_serial_thread(a):
while True:
print(a)
a = 120
t0 = threading.Thread(target=init_serial_thread, args=(a,))
t0.start()
time.sleep(2)
print("begin exit")
_async_raise(t0.ident, SystemExit)
t0.join()
print("exit")