如何将 ZeroMQ 套接字集成到 glib 主循环中?
我想将 ZeroMQ 套接字添加到 glib 程序中。
遗憾的是,zmq 套接字不支持 poll(),并且他们给出了自己的实现,这会重载旧的 poll() 函数。我怎样才能有效地将其集成到主循环中?我尝试使用他们的轮询( zmq_poll()
)而不是默认的,但除了将其设为 global
之外,没有好的方法为其提供 zmq 套接字。
定义一个新的GSource
是可行的,但它可能会导致高CPU使用率(通过设置timeout = 0
)或任意轮询超时(例如设置timeout = 100
) > 至少每 100 毫秒轮询一次),这并不是真正高效,因为存在轮询的可能性。
I wanted to add a ZeroMQ socket to a glib program.
The pitty is, a zmq socket is not poll()
-able, and they give their implementation, which overloads the old poll()
func. How could I integrate that into the main loop efficiently? I tried using their poll ( zmq_poll()
) instead of the default one, but there's no good way of giving it the zmq socket, besides from making it a global
.
Defining a new GSource
works, but it can get high CPU usage ( by setting timeout = 0
) or arbitrary poll timeouts ( e.g. setting timeout = 100
to be polled at least every 100 ms ), which is not really efficient, since there is the possibility of polling.
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根据常见问题解答,您可以尝试“其他方式”方法。不要在 zmq 套接字上进行
poll
,而是尝试在常规套接字上使用zmq_poll()
。查看问题如何将ØMQ套接字与普通套接字集成?或者使用 GUI 事件循环? 在常见问题解答中。
According to FAQ you could try "the other way" approach. Rather than making
poll
on a zmq socket tryzmq_poll()
on a regular socket.Check out question How can I integrate ØMQ sockets with normal sockets? Or with a GUI event loop? in the FAQ.
我发现较新的 zmq 库支持
ZMQ_FD
getsockopt()
参数,它会返回一个 unixfd
,您可以
poll()
。唯一需要注意的是,您不能仅poll()
它来知道是否可以recv()
或send()
from / to它,但您需要使用ZMQ_EVENTS
getsockopt()
参数来获取真实的fd
状态。它似乎在 glib 中工作得很好。
I found that newer zmq libraries support the
ZMQ_FD
getsockopt()
parameter, which gives you back a unixfd
which you canpoll()
. The only caveat is that you can't justpoll()
it to know if you canrecv()
orsend()
from / to it, but you need to use theZMQ_EVENTS
getsockopt()
parameter to get back the realfd
status.It seems to be working quite well in glib.