Python 3.x 如何同时收听D总线事件和IPC通道?

Python 3.x 如何同时收听D总线事件和IPC通道?,python-3.x,python-3.4,glib,dbus,systemd,Python 3.x,Python 3.4,Glib,Dbus,Systemd,我有以下简化的代码。它侦听D总线,并在创建新作业时执行某些操作。为此,我需要启动GLib.MainLoop().run(),正如我发现的多个示例所示 在执行此操作时,我希望程序能够持续监听IPC总线,并在收到消息时执行某些操作。但显然,这不起作用,因为我的程序卡在了GLib.MainLoop().run() 如何实现让我同时听D总线和IPC的功能 #!/usr/bin/env python3.4 import asgi_ipc as asgi from gi.repository import

我有以下简化的代码。它侦听D总线,并在创建新作业时执行某些操作。为此,我需要启动GLib.MainLoop().run(),正如我发现的多个示例所示

在执行此操作时,我希望程序能够持续监听IPC总线,并在收到消息时执行某些操作。但显然,这不起作用,因为我的程序卡在了GLib.MainLoop().run()

如何实现让我同时听D总线和IPC的功能

#!/usr/bin/env python3.4
import asgi_ipc as asgi
from gi.repository import GLib
from pydbus import SystemBus
from systemd.daemon import notify as sd_notify

def main():
    bus = SystemBus()
    systemd = bus.get(".systemd1")
    systemd.onJobNew = do_something_with_job()

    channel_layer = asgi.IPCChannelLayer(prefix="endercp")

    # Notify systemd this unit is ready
    sd_notify("READY=1")

    GLib.MainLoop().run()

    while True:
        message = channel_layer.receive(["endercp"])
        if message is not (None, None):
            do_something_with_message(message)


if __name__ == "__main__":
    # Notify systemd this unit is starting
    sd_notify("STARTING=1")

    main()

    # Notify systemd this unit is stopping
    sd_notify("STOPPING=1")

由于
IPCChannelLayer.receive()
不会阻塞,因此可以在空闲回调中运行它。试试这个:

callback_id = GLib.idle_add(GLib.PRIORITY_DEFAULT_IDLE, poll_channel, data=channel_layer)
GLib.MainLoop().run()
GLib.idle_remove_by_data(channel_layer)

# ...

def poll_channel(channel_layer):
    message = channel_layer.receive(["endercp"])
    if message is not (None, None):
        do_something_with_message(message)
    return GLib.SOURCE_CONTINUE