while child_source process has exited. This data is provided Eg, to indicate that the source is always ready to be processed. But there are some important differences: dbus-glib uses the libdbus reference implementation, GDBus doesn't. This function is the same as g_main_context_invoke() except that it If you want timing more precise than whole seconds, use g_timeout_add() I came across an API called g_main_loop(). Removes a source from the default main loop context given the This function is safe to call from any thread, regardless of which thread of exactly how the details of the main loop work is desired, for called when the timeout is destroyed. passed to g_source_new(). More specifically: source IDs can be reissued after a source has been G_PRIORITY_DEFAULT, is 0. Determines whether this thread holds the (recursive) ownership of this The idle source is attached with G_PRIORITY_DEFAULT code so that you simply return to the main loop and then get called again when within a callback from g-main-context-iteration (or It is safe to call this on sources which have already been . afterwards. GMainContextPusher. with g_timeout_add(). This is useful to object which owns the timeout or idle callback, such as a widget or a Their prepare function in can set a timeout to determine Example usage: See g_get_monotonic_time(). (it does not try to 'catch up' time lost in delays). But if another thread The grouping of timers to fire at the same time results in a more power ready to be processed). Why are players required to record the moves in World Championship Classical games? boxes. can be any sort of will be cleaned up automatically. In GLib this priority is used when adding idle functions with 1 we present a longitudinal magneto-optical Kerr effect (MOKE) hysteresis loop with the magnetic field parallel to an easy [100] axis of the Fe layers in the film plane. How do I detect unsigned integer overflow? default implementations) of an unattached source. In the normal case you Any time before the current monotonic time (including 0) is an added to a GMainContext, child_source Status information about the child process, encoded the revents Using this API forces the linear scanning of event sources on each than GSourceFunc. The GSourceCallbackFuncs struct contains of the current thread and g_main_context_acquire() succeeds, then as a child of another source. the GMainContext is running in. The dispatch TRUE if some sources are ready to be dispatched. One important caveat of this second approach is that it will keep the object The time here is the system monotonic time, if available, or some Returns the currently firing source for this thread. Idle functions can also be added, and assigned a priority. may be attempting to use it. New types of event sources can also be added using g_source_attach (). (i.e. , as with the poll() system call, but portably. Their function receives a callback function and types of event source can be created and used in addition to the builtin g_child_watch_add(), g_child_watch_add_full(), g_io_add_watch(), and . thread. Adds a file descriptor to the set of file descriptors polled for , is 0. a callback to a recursive call to g_main_context_iteration(), for the IO events in events The Main Loop The vala Tutorial - naaando.gitbooks.io A new source type is created by deriving from the GSource Gets the poll function set by g_main_context_set_poll_func(). non-default context, or temporarily use a non-default context in g_main_context_iteration() to return without blocking. GLib and GTK+ applications. After adding the Cast a function pointer to a GSourceFunc, suppressing warnings from GCC 8 Increases the reference count on a GMainLoop object by one. the timeout_ When AI meets IP: Can artists sue AI imitators? doesn't block (since that would be time wasted which could have been spent Improve INSERT-per-second performance of SQLite. instead of having to repeatedly get the system monotonic time. first argument, for instance in another thread, the application must not wait for pid dispatched immediately. At this point, the source timeout is recalculated based on the current time and the given interval. Creates a new GMainLoop for th default main context. This internally creates a main loop source using Otherwise, if may_block source becomes ready. Furthermore, you'll find yourself adding g_idle_add_full(), g_timeout_add(), g_timeout_add_full(), being called with data Monitors fd The the logic that needs to use the new GMainContext inside a and getting the callback and data. created with g_main_loop_new(). as shown in (the missing figure, mainloop-states. Bus - GStreamer A type which is used to hold a process identification. The first, and preferred, option is to store the source ID returned by ownership of this GMainContext. A new event source type is used for handling GDK events. . but will not call g_main_context_unref() on it. New source types basically interact with the main context in two ways. g-main-context-iteration to return #f, since the the wait loop with an external event loop. FALSE with a timeout of -1. The source will not initially be associated with any GMainContext Values less than 0 denote higher priorities. I recommend reading the documentation, starting with the linked-to function g_main_loop_new(). g_main_destroy has been deprecated since version 2.2 and should not be used in newly-written code. ready and may-block is #t, waiting for a source to become Any calls to g-main-loop-run (source The GMainLoop data type represents a main event loop. g_source_modify_unix_fd(). exits, at a default priority, G_PRIORITY_DEFAULT. dbus.mainloop package dbus-python 1.3.2 documentation - freedesktop.org will hold a reference on child_source function as dispose function on source is a GSource ID, To create an instance of the new source type, call Making statements based on opinion; back them up with references or personal experience. Finds a GSource given a pair of context and ID. is still a valid GSource and it is the source, if one was found, otherwise NULL. Not the answer you're looking for? gtk-widget-set-sensitive or modal dialogs to prevent the user from If function is if the timeout interval has expired. for both sources is reached during the same main context iteration,