gevent.Queue communication from other python threads

[Neilen Marais]

Hi,

Is it possible to communicate to a gevent tasks from another thread
via gevent.Queue? I have to interact with other threaded libraries
involving callbacks, and would like to use an actor like pattern where
each callback from another thread puts something on the gevent based
actor's queue.

Thanks
Neilen

[Paul Giannaros]

Under unix you can use non-blocking pipes (os.pipe/fcntl) – write to the pipe from your thread and gevent.select the pipe from a greenlet. I'd be interested to hear if there's a better way though, particularly one that works under windows. 

[Denis Bilenko]

On Tue, May 15, 2012 at 1:18 PM, Neilen Marais <nma...@ska.ac.za> wrote:
> Is it possible to communicate to a gevent tasks from another thread
> via gevent.Queue? I have to interact with other threaded libraries
> involving callbacks, and would like to use an actor like pattern where
> each callback from another thread puts something on the gevent based
> actor's queue.

No, it's not possible. Nothing is thread-safe in gevent except for
stuff in threadpool.py and async watcher.

On Wed, May 16, 2012 at 12:09 AM, Paul Giannaros
<p.a.gi...@gmail.com> wrote:
> Under unix you can use non-blocking pipes (os.pipe/fcntl) – write to the
> pipe from your thread and gevent.select the pipe from a greenlet. I'd be
> interested to hear if there's a better way though, particularly one that
> works under windows.

Use the async watcher instead. It is also cross platform.

To find more about async watcher search this group:
http://groups.google.com/group/gevent/search?group=gevent&q=async+watcher&qt_g=Search+this+group