Re: [boost] [Interprocess] message_queue should use timed_lock

Subject: Re: [boost] [Interprocess] message_queue should use timed_lock
From: Ion Gaztañaga (igaztanaga_at_[hidden])
Date: 2012-12-06 10:48:54

El 05/12/2012 20:23, Hartmut Kaiser escribió:
> (mq_ is a shared_ptr<message_queue>)
>
> here both ends sit forever inside the timed_receive/timed_send function,
> both waiting to acquire a lock (ipc/message_queue.hpp, lines 702 and 799),
> which is held by a third participating process. Shouldn't this lock be using
> a timed_lock to allow to maintain the API post condition (i.e. returning
> after the given amount of time in any case)?

Unless there is a bug (and this seems a bug), the internal lock is only 
hold to test queue internals and released on the condition variable if 
blocking is needed, so no process should be blocked on the mutex forever.

Ion