On Mon, 2005-12-12 at 10:56 +0000, Richard Warren wrote: > Dear all, > > I would be grateful if anyone could tell me whether I need to unreference a > GIOChannel in order to destroy it properly. > > Here's what I'm currently doing: > > 1. I create a channel with g_io_channel_unix_new() from a socket. The docs > state that the initial reference count will be 1. > 2. I then add a watch on it with g_io_add_watch(). > 3. At a later date, I remove the watch with g_source_remove(). > 4. I want to destroy the channel and free all resources, so call > g_io_channel_shutdown(). > > However, the docs for the shutdown function state that the channel will not > be freed until the last reference is dropped using g_io_channel_unref(). > Does this include the initial reference added on creation, or is that > unreferenced by the shutdown function.
The comment in the shutdown function wants to say that "g_io_channel_shutdown" doesn't touch the reference counter. Hence you need to unref the channel manually. What you can (probably) do is the following: 1. Create the channel. 2. Add the watch. The watch should add a reference to the channel. 3. Call unref on the channel. Now the watch holds the only reference to the channel. 4. Remove the watch with g_source_remove, this will drop the ref count to 0 and destroy the channel. The channel will be flushed. In general, every low-level object that is not a GtkObject or derived therefrom has a reference count of 1 and hence needs to be unref'd by whomever called the constructor. Hope this helps, Axel. _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
