Question

在一些集成测试期间，我试图重新启动用Python编写的Web服务器。服务器在测试过程中作为线程运行，因此我可以继续向其发送POST \ GET请求，并断言答案。

我试图用力杀死线程：

t = threading.Thread(name='server', target=main, daemon=True)
.....
t._tstate_lock = None
t._stop()
t.join()

在调试时，实际上我可以看到线程已停止，但是由于某种原因，Web服务器仍处于启动状态。

有什么想法吗？

Answer 1

对于子孙后代，这是我用来在Python中创建可杀死线程的代码。

import threading
import inspect
import ctypes


def _async_raise(tid, exctype):
    """raises the exception, performs cleanup if needed"""
    if not inspect.isclass(exctype):
        raise TypeError("Only types can be raised (not instances)")
    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, 0)
        raise SystemError("PyThreadState_SetAsyncExc failed")


class Thread(threading.Thread):
    def _get_my_tid(self):
        """determines this (self's) thread id"""
        if not self.isAlive():
            raise threading.ThreadError("the thread is not active")

        # do we have it cached?
        if hasattr(self, "_thread_id"):
            return self._thread_id

        # no, look for it in the _active dict
        for tid, tobj in threading._active.items():
            if tobj is self:
                self._thread_id = tid
                return tid

        raise AssertionError("could not determine the thread's id")

    def raise_exc(self, exctype):
        """raises the given exception type in the context of this thread"""
        _async_raise(self._get_my_tid(), exctype)

    def terminate(self):
        """raises SystemExit in the context of the given thread, which should
        cause the thread to exit silently (unless caught)"""
        self.raise_exc(SystemExit)

杀死运行Web服务器的Python线程

1 个答案: