gtk2reactor.py 文件源码

def __init__(self, useGtk=True):
        self.context = gobject.main_context_default()
        self.loop = gobject.MainLoop()
        posixbase.PosixReactorBase.__init__(self)
        # pre 2.3.91 the glib iteration and mainloop functions didn't release
        # global interpreter lock, thus breaking thread and signal support.
        if (hasattr(gobject, "pygtk_version") and gobject.pygtk_version >= (2, 3, 91)
            and not useGtk):
            self.__pending = self.context.pending
            self.__iteration = self.context.iteration
            self.__crash = self.loop.quit
            self.__run = self.loop.run
        else:
            import gtk
            self.__pending = gtk.events_pending
            self.__iteration = gtk.main_iteration
            self.__crash = _our_mainquit
            self.__run = gtk.main

    # The input_add function in pygtk1 checks for objects with a
    # 'fileno' method and, if present, uses the result of that method
    # as the input source. The pygtk2 input_add does not do this. The
    # function below replicates the pygtk1 functionality.

    # In addition, pygtk maps gtk.input_add to _gobject.io_add_watch, and
    # g_io_add_watch() takes different condition bitfields than
    # gtk_input_add(). We use g_io_add_watch() here in case pygtk fixes this
    # bug.