Re: Question about new functions in GDK 2.11

["Matthias Clasen" <matthias clasen gmail com>]

On 6/6/07, Tomasz Jankowski <tomcioj gmail com> wrote:
> Hi!
>
> My question isn't really important, I'm only curious ;P
>
> Why did you add functions below to GDK?
> gdk_threads_add_idle gdk_threads_add_idle_full gdk_threads_add_timeout
> gdk_threads_add_timeout_full If we write multi thread aplication in GTK+ we
> surround gtk_main () function with gdk_threads_enter () and
> gdk_threads_leave (), so any call of g_idle_add... or g_timeout... functions
> will be automatically thread safe, am I right?
>
> Can someone explain it for me?

There are some hints in the documentation of these new functions.

The problem is with scenarios where thread B installs an idle in the
main loop thats running in thread A and passes user data to it. Thread
B then later frees the user data and removes the idle. There is a race
between the idle being run in thread A and the user data being freed
in thread B.