visualstudio_py_debugger.py 文件源码

def async_break(self):
        def async_break_send():
            with _SendLockCtx:
                sent_break_complete = False
                global SEND_BREAK_COMPLETE
                if SEND_BREAK_COMPLETE == True or SEND_BREAK_COMPLETE == self.id:
                    # multiple threads could be sending this...
                    SEND_BREAK_COMPLETE = False
                    sent_break_complete = True
                    write_bytes(conn, ASBR)
                    write_int(conn, self.id)

            if sent_break_complete:
                # if we have threads which have not broken yet capture their frame list and 
                # send it now.  If they block we'll send an updated (and possibly more accurate - if
                # there are any thread locals) list of frames.
                update_all_thread_stacks(self)

        self.stepping = STEPPING_NONE
        self.block(async_break_send)