Attaching an event source to a GMainLoop in a thread

[Braden McDaniel <braden endoframe com>]

I have a GMainLoop that I want to run in its own thread. But I seem to b
doing something horribly wrong with the event source I'm trying to
attach to it (all as part of the same thread). My thread function
includes this code:

        GMainContext * main_context = g_main_context_new();
        GMainLoop * main_loop = g_main_loop_new(main_context, false);
        
        GSource * quit = g_idle_source_new();
        g_source_set_callback(quit,
                              ::openvrml_player_command_channel_loop_quit_event,
                              main_loop,
                              notify);
        guint source_id = g_source_attach(quit, main_context);
        g_assert(source_id != 0);
        
        g_main_loop_run(main_loop);
        
        g_source_unref(quit);
        g_main_loop_unref(main_loop);
        g_main_context_unref(main_context);

If I do not attach the event source, the code runs. But if I do attach
it, as above, I crash as soon as I start to run the main loop:

        #0  0x0000000000000000 in ?? ()
        #1  0x0000003c9242cf6a in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
        #2  0x0000003c9242fd7d in g_main_context_check () from /lib64/libglib-2.0.so.0
        #3  0x0000003c9243008a in g_main_loop_run () from /lib64/libglib-2.0.so.0
        #4  0x000000000040b02d in operator() (this=0x6bec30) at ../.././../src/openvrml-gtkplug/main.cpp:322
        #5  0x000000000040b099 in invoke (function_obj_ptr={obj_ptr = 0x6bec30, const_obj_ptr = 0x6bec30, 
func_ptr = 0x6bec30, data = "0"}) at /usr/include/boost/function/function_template.hpp:136
        #6  0x00002aaaac923d4f in boost::function0<void, std::allocator<boost::function_base> >::operator() 
() from /usr/lib64/libboost_thread.so.2
        #7  0x00002aaaac9238df in boost::thread_group::add_thread () from /usr/lib64/libboost_thread.so.2
        #8  0x0000003c90006305 in start_thread () from /lib64/libpthread.so.0
        #9  0x0000003c8f4cd62d in clone () from /lib64/libc.so.6
        #10 0x0000000000000000 in ?? ()

I figure I'm probably missing something about the proper way to attach
the event source, perhaps related to the fact that I'm not doing this in
the main thread.

-- 
Braden McDaniel                           e-mail: <braden endoframe com>
<http://endoframe.com>                    Jabber: <braden jabber org>