On Thursday 05 April 2007 00:47, Iain * wrote: > On 4/4/07, Chris Vine <[EMAIL PROTECTED]> wrote: > > > > Sure. My question is, how many times (and when) do I have to call it? > > > > > > Once when you've finished with it > > > > In the context of his original question, that is not right. His original > > question was whether the callback returning FALSE avoids the need for an > > explicit final call to g_io_channel_unref() to destroy the GIOChannel > > object, assuming that before the callback returns false it only has a > > reference count of 1. > > Well, yes, if you've already dropped the reference count so that its > only depending on the watch to live then the watch will clean it up. > But that practice would scare me as its non-deterministic as to when > the GIOChannel will be destroyed. > > Common practise would be to keep a reference to the IOChannel and drop > it once you've finished with it, which means you know better when its > been destroyed.
I simply don't agree. Common practice is cause the callback to return false, usually because end-of-file has been reached or because the remote end of a pipe or socket has dropped the connection. Those conditions are only detectable on a read in the callback. Less common practice is to call g_source_remove() on the return value of g_io_add_watch() (which is equivalent to calling g_io_channel_unref() if the reference count is 1). Chris _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
