no need to reply me off-list. On Tue, 2007-09-11 at 16:40 +0200, Luca D wrote: > 2007/9/10, Emmanuele Bassi <[EMAIL PROTECTED]>: > > the Clutter threading model is based on taking a lock when > using the API > from any thread. the ideal approach would be not to call the > Clutter API > from different threads whenever it's possible - but use an > idle handler > set up with clutter_threads_add_idle(), as idle and timeout > callbacks > are called within the same thread that called clutter_main(). > if this is > not possible, safeguard the API calls using to lock the > main mutex, and threads_leave() to unlock it. > > I prefer not to use clutter_threads_add_idle() because the function > may spend a long time doing clutter-unrelated things and I don't like > the main loop to wait unnecessarily.
you misunderstood me. you should install a idle handler just to manipulate the Clutter API when done computing stuff inside the thread, so you don't need to acquire the main Clutter lock - because the API does it for you. the tests/test-threads.c test case shows you how to use the API and threads with Clutter. > since Clutter threading model heavily borrows from GDK's one > (we have > the same issues, plus the fact that we need to safeguard the > GL lock, > which *must* be one per process), a good reading material is > the GDK > threading model description: > > http://library.gnome.org/devel/gdk/unstable/gdk-Threads.html > > > Do the following lines taken form the above link also apply to the > clutter case? > > "Callbacks require a bit of attention. Callbacks from GTK+ signals are > made within the GTK+ lock. However callbacks from GLib (timeouts, IO > callbacks, and idle functions) are made outside of the GTK+ lock. So, > within a signal handler you do not need to call gdk_threads_enter(), > but within the other types of callbacks, you do." yep, it doesn't apply. every signal inside Clutter and every idle/timeout callback installed _using the clutter_threads_add_* API_ is emitted under the main Clutter lock. ciao, Emmanuele. -- Emmanuele Bassi, OpenedHand Ltd. Unit R, Homesdale Business Centre 216-218 Homesdale Rd., Bromley - BR12QZ http://www.o-hand.com -- To unsubscribe send a mail to [EMAIL PROTECTED]
