On Tue, 26 Oct 2010 22:41:44 +0000 Juan Pablo L. <jpablolorenze...@hotmail.com> wrote: > Hello, i m using threads in a glib-only project, a service daemon, i > have implemented them using GThreads, but i see now that GThreads is > only a wrapper around pthreads (with the corresponding overhead from > doing so) and does not provide any additional benefit (if i dont > mistake the only real benefit is the cross platform feature). [snip]
I doubt very much you will notice any difference. Compared to the overhead of starting new threads and potential contention on mutexes, wrapping costs are likely to be negligible. There is a case for using pthread directly if you are using your own wrappers for automatic lifetime management and exception safety in, say, C++, or if you want to use thread cancellation, or the small number of other features supported by pthread but not by GThreads. > 1. if i dont issue the g_thread_init, at the beginning of my > application, will there be any problem in glib itself? some functions > or functionality willl cease to work or work incorrectly ? You must call g_thread_init() if more than one thread might call glib functions in order to make glib thread safe. So call g_thread_init() in a multi-threaded program. > 2. Can i > just use Glib with pthread instead of GThread ? i know that the main > loop and GAsyncQueue will work out of the box. Yes, provided you have called g_thread_init(). > 3. The documentation > says that by issuing g_thread_init Glib will become thread safe, i > dont understand this, if i dont issue the command Glib will not work > in a multithreated environment ? It won't, no. See above. > 4. If in the future i use glib in > another project and decided to use pthread in my code but i know GTK > uses GThread inside, will this be a problem? will it be overhead > because i would be using pthreads and GThread together ? No. As you have already deduced, GThread is a wrapper for pthread in unix-like environments. Chris _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
