threading ---- python multi-threading Python 多线程

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import threading
import time
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)


def test():
    while True:
        print('-------')
        # time.sleep(0.5)
        pass


if __name__ == "__main__":
    t = threading.Thread(target=test)
    t.start()
    time.sleep(5.2)
    print("main thread sleep finish")
    stop_thread(t)

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import threading


class ResultThread(threading.Thread):
    def __init__(self, target=None, args=(), kwargs={}):
        super().__init__()
        self.target = target
        self.args = args
        self.kwargs = kwargs

    def run(self):
        self.result = self.target(*self.args, **self.kwargs)

    def get_result(self):
        try:
        return self.result
        except Exception:
        return None


def timeout_thread(timeout, target, *args, **kwargs):
    job = ResultThread(target=target, args=args, kwargs=kwargs)
    job.start()
    job.join(timeout)

    if job.is_alive():
        stop_thread(job)
    return job.get_result()