On Mon, Mar 29, 2010 at 6:58 PM, Thomas Stover <tho...@wsinnovations.com> wrote: > In the documentation for g_main_context_push_thread_default(), the > following sentence appears: > > "This will cause certain asynchronous operations (such as most gio-based > I/O) which are started in this thread to run under context and deliver > their results to its main loop, rather than running under the global > default context in the main thread." > > This makes me think my experiment program below would work, yet on ubuntu > 9.10 at least, it does not. Perhaps g_io_channel_unix_new() is not in the > "most" group referred to above? Or maybe I'm doing this wrong. Thanks for > any input.
GIO refers to the GIO library (http://library.gnome.org/devel/gio/stable/), not to the g_io_* family of functions. Probably worth filing a bug to make this clearer in the documentation. -A. Walton > > ==== > #include <glib.h> > #include <unistd.h> > #include <sys/syscall.h> > > GMainContext *thread1_context, *thread2_context; > GMainLoop *main_loop1, *main_loop2; > > gboolean idle_callback(gpointer data) > { > g_print("idle_callback() %d\n", (pid_t) syscall (SYS_gettid)); > return FALSE; > } > > gboolean input_callback(GIOChannel *source, > GIOCondition condition, > gpointer data) > { > GSource *idle_source; > unsigned char buffer[16]; > g_print("input_callback() %d\n", (pid_t) syscall (SYS_gettid)); > > if(read(0, buffer, 16) < 1) > return FALSE; > > idle_source = g_idle_source_new(); > g_source_set_callback(idle_source, idle_callback, NULL, NULL); > g_source_attach(idle_source, thread1_context); > > return TRUE; > } > > gpointer thread2_entry(gpointer data) > { > GIOChannel *channel; > g_print("thread2_entry() %d\n", (pid_t) syscall (SYS_gettid)); > > main_loop2 = g_main_loop_new(thread2_context, FALSE); > > g_main_context_push_thread_default(thread2_context); > > channel = g_io_channel_unix_new(0); > g_io_add_watch(channel, G_IO_IN, input_callback, NULL); > > g_main_loop_run(main_loop2); > } > > int main(int argc, char **argv) > { > g_thread_init(NULL); > > thread1_context = g_main_context_default(); > thread2_context = g_main_context_new(); > > main_loop1 = g_main_loop_new(thread1_context, FALSE); > > g_thread_create(thread2_entry, NULL, FALSE, NULL); > > g_main_loop_run(main_loop1); > return 0; > } > ==== > > Here is an example session: > > $ ./a.out > thread2_entry() 24928 > f > input_callback() 24927 > idle_callback() 24927 > e > input_callback() 24927 > idle_callback() 24927 > k > input_callback() 24927 > idle_callback() 24927 > ^C > > What I was expecting is for input_callback() to run in thread 24928 > instead of 24927. > > -- > www.thomasstover.com > _______________________________________________ > gtk-app-devel-list mailing list > gtk-app-devel-list@gnome.org > http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list > _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
