visualstudio_py_debugger.py 文件源码

def debug(file, port_num, debug_id, debug_options, run_as = 'script'):
    # remove us from modules so there's no trace of us
    sys.modules['$visualstudio_py_debugger'] = sys.modules['visualstudio_py_debugger']
    __name__ = '$visualstudio_py_debugger'
    del sys.modules['visualstudio_py_debugger']

    wait_on_normal_exit = 'WaitOnNormalExit' in debug_options

    attach_process(port_num, debug_id, debug_options, report = True)

    # setup the current thread
    cur_thread = new_thread()
    cur_thread.stepping = STEPPING_LAUNCH_BREAK

    # start tracing on this thread
    sys.settrace(cur_thread.trace_func)

    # now execute main file
    globals_obj = {'__name__': '__main__'}
    try:
        if run_as == 'module':
            exec_module(file, globals_obj)
        elif run_as == 'code':
            exec_code(file, '<string>', globals_obj)
        else:
            exec_file(file, globals_obj)
    finally:
        sys.settrace(None)
        THREADS_LOCK.acquire()
        del THREADS[cur_thread.id]
        THREADS_LOCK.release()
        report_thread_exit(cur_thread)

        # Give VS debugger a chance to process commands
        # by waiting for ack of "last" command
        global _threading
        if _threading is None:
            import threading
            _threading = threading
        global last_ack_event
        last_ack_event = _threading.Event()
        with _SendLockCtx:
            write_bytes(conn, LAST)
        last_ack_event.wait(5)

    if wait_on_normal_exit:
        do_wait()

# Code objects for functions which are going to be at the bottom of the stack, right below the first
# stack frame for user code. When we walk the stack to determine whether to report or block on a given
# frame, hitting any of these means that we walked all the frames that we needed to look at.