From freedesktop-dbus  Fri Dec 28 00:26:50 2007
From: Thiago Macieira <thiago () kde ! org>
Date: Fri, 28 Dec 2007 00:26:50 +0000
To: freedesktop-dbus
Subject: Re: Proper use of dbus_connection_send_with_reply & DBusPendingCall
Message-Id: <200712272226.51299.thiago () kde ! org>
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David Belser wrote:
>1 - I will be handling the reply in a different thread than the one
>that made the call, this may or may not be that big of an issue
>depending on how and what my app is doing.
>
>2 - There is a brief window where the dispatch thread may receive the
>reply before I've set the callback notify function.

There's a simple solution to both cases: only access the DBusConnection=20
from one thread. Your application can be multi-threaded, but you don't=20
have to make concurrent accesses to the DBusConnection object.

Since you're talking about a binding, it shouldn't be too difficult to=20
wrap those concepts.

However, there is also a drawback: the dispatching thread has to be=20
available. Either it's a dedicated thread for that job or it's a thread=20
that you guarantee not to block on expensive operations. If it's not a=20
dedicated thread, you have to worry about deadlocks as well (dipatching=20
thread calls aux thread that tries to access D-Bus).

=2D-=20
=A0 Thiago Macieira =A0- =A0thiago (AT) macieira.info - thiago (AT) kde.org
=A0 =A0 PGP/GPG: 0x6EF45358; fingerprint:
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