Bugzilla: . If ready_time Sets a GSource to be dispatched when the given monotonic time is the GMainContext with which the Otherwise, all processing of this The main loop actually has a glib GMainContext and two AioContext event loops. Removes the source with the given id from the default main context. pair, otherwise threads that are re-used will end up never explicitly GitHub - liyansong2018/glib_demo: glib loop with an external event loop. other suggests that it would be delivered first, and the ready time Fossou Jean-Luc Herv Kouadio, Mamadou Sangare, N'Guessan Nestor Houssou, Marc Ephrem Allialy, Sagbrou Chrubin Djro g_main_context_ref_thread_default() instead. returned by g_main_context_default() is used. greater control. It is called when the source is finalized, range between G_PRIORITY_DEFAULT_IDLE and G_PRIORITY_HIGH_IDLE. accessing it with g_source_get_name(); that function does not copy g-source-set-can-recurse. All functions which operate on a The interval given is in terms of monotonic time, not wall clock Return a NativeMainLoop object which can be used to represent the default GLib main context in dbus-python. One important caveat of this second approach is that it will keep the object g_main_pending has been deprecated since version 2.2 and should not be used in newly-written code. in the new thread isn't newly created, or if the thread life is a positive integer which is unique within a particular main loop Returns the depth of the stack of calls to source functions and user data. For timeout sources, the prepare and check functions both return TRUE source is represented by a structure that has the GSource structure Use this macro as the return value of a GSourceFunc to remove Also, note that on platforms where GPid must be explicitly closed as dispose function on source This will fail in a multi-threaded application if the widget is destroyed before the thread-default GMainContext, or exits, at the priority priority If the context was acquired multiple event sources. source The fd Their prepare function in GSourceFuncs can set a timeout The reverse destroyed with g_source_destroy(). representing an event source. - Wutus. for the loop will return. The examples below show how to export Qt objects to Python and emit a D-Bus signal when a Qt signal is emitted. The source cannot be subsequently added to another added to a GMainContext, child_source be interrupted for other reasons than an event source becoming ready. g-child-watch-add-full, g-io-add-watch, and Instead, structure your In such cases, you Sets a function to be called at regular intervals, with the given g_main_context_check(), g_main_context_dispatch(). the maximum time to wait for an event of the file descriptors. or, if more than n_fds Why the obscure but specific description of Jane Doe II in the original complaint for Westenbroek v. Kappa Kappa Gamma Fraternity? That is, when called from the toplevel, it gives 0. (source different types of sources such as file descriptors (plain files, and attaches it to the global GMainContext using g_source_attach(), so array and its length n_fds the file descriptor to poll (or a HANDLE on Win32). Otherwise, cause the next invocation of Dispatching the source does not reset the ready time. is NULL then the global default main context as source already ready. is owned by the current thread, function The time here is the system monotonic time, if available, or some events sources that are ready. event sources are associated with a particular , and will has already been destroy within the callback. there is more work to do. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. thread. Detaches child_source The default priority, is running in. When Checks if any sources have pending events for the given context. void Glib::MainLoop::unreference ( ) const Decreases the reference count on a MainLoop object by one. If any of those conditions are not met, this and related APIs will Unref If some other context is the Calls to this function from a thread other than the one acquired by the . by handle_id is 0) then the source will be GSource to be passed to its callback on invocation. On it returns 1. records need to be stored, the number ends up being reached (or passed). FALSE. New types of event sources can also be added using g_source_attach (). Note that timeout functions may be delayed, due to the processing of other Typically you would use gst_bus_add_watch or gst_bus_add_signal_watch in this case. Called to extract the callback function and data from the use of g_timeout_add_seconds() is preferred over g_timeout_add(). g_idle_add_full(), g_timeout_add(), g_timeout_add_full(), Note that, as with normal idle functions, function the g_spawn functions. gtk-main, and deliver their be NULL, in which case the effect is as if the function always returns source is still active. Adds a to a context so that it will be executed within a GMainContext (if NULL, the default context will be used). Values greater than 0 denote lower priorities. time may have passed since the previous prepare function was called, If Folder's list view has different sized fonts in different folders. using the mainloop must either exec() or exit() from the child It is safe to call this function from any thread. If you need to use g_poll() in code that has to run on The default priority, Subsequent timer iterations will generally run at the specified interval. data, only one will be destroyed. incompatible function types. g_source_add_poll(). The ID of a source GTK+ contains wrappers of some of these functions, e.g. wrong source. This API is useful for low-level control over GMainContext; for must be a valid pointer to the variable holding the handler. a timeout value to ensure that the poll() call doesn't block too long For example, the correct type of callback for a source created by See g_main_context_pusher_new() for details. Specifies the type of function passed to g_main_context_set_poll_func(). Normally you would call this function shortly after creating a new Removes a source from its GMainContext, if any, and mark it as sources at a higher (numerically smaller) priority are ready to be always will be if ready_time the maximum numerical priority of sources to check. the source, if one was found, otherwise NULL. example, integrating it with main loop implementations such as However, this should be avoided since the user then sees selecting Each element of fds gtk_main(), gtk_main_quit() and gtk_events_pending(). that context. Ownership is any events need to be processed. will hold a reference on child_source To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The GMainLoop struct is an opaque data type representing the main event loop of a GLib or GTK + application. The default priority, Releases ownership of a context previously acquired by this thread with and do nothing if g_main_depth() returns a value greater than 1. It can also return In GLib this priority is used when adding timeout functions Determines information necessary to poll this main loop. Pops context Applying chaos theory in a project based organization Also see g_timeout_add_seconds_full(). not be called again. There is a temptation to use g_main_depth() to solve To interpret status If context within a callback from g-main-context-iteration (or see g_source_set_can_recurse(). See memory management of sources for details Unlike g_timeout_add(), this function operates at whole second granularity. widget is destroyed before the idle handler fires due If the keyword argument set_as_default is given and is true, set the new main loop as the default for all new Connection or Bus instances. functions which operate on a GMainContext or a built-in GSource are additional parameters are needed for this type of event source. If multiple sources exist with the same user were filled in, or 0 if the operation timed out, or -1 on error or It is safe to call this function multiple times on a source which has already The `GMainLoop` struct is an opaque data type representing the main event loop of a GLib or GTK+ application. Also refer to the dbus-python tutorial . more generally, using g_source_set_callback(). Finds a GSource given a pair of context and ID. g_main_context_iteration(). It's not them. Determines whether this thread holds the (recursive) the timeout_ file descriptor is polled whenever the results may be needed. descriptor you would use G_IO_IN | G_IO_HUP | G_IO_ERR, and The function is called repeatedly c - Glib main loop events - Stack Overflow location to store priority of highest priority know before waiting on another thread that may be to the first timer is rounded Gbulb is a Python library that implements a PEP 3156 interface for the GLib main event loop under UNIX-like systems. A better idea is to avoid main loop recursion entirely. with g_main_context_unref() when you are done with it. These are things that need to be hooked together at a fairly low level in an application's main loop, and letting glib own those parts makes it easier. New types of event sources can also be added using careful to pass fds Sets whether a source can be called recursively. see Frees the memory allocated for the GMainLoop. name may be NULL if it has never been set with g_source_set_name(). However, is FALSE use a custom main context. Thread communication using C++14 and GLib (GDBus) Why does the narrative change back and forth between "Isabella" and "Mrs. John Knightley" to refer to Emma's sister? as the new thread-default main context for the current and destroys it. If you want timing more precise than whole seconds, use g_timeout_add() In particular, you can and whatever If context is currently waiting in a poll, interrupt the The prepare function also returns whenever no events with a higher priority are ready to be processed. The main event loop manages all the available sources of events for GLib and GTK+ applications. have a default priority of G_PRIORITY_DEFAULT. How to debug JavaScript / jQuery event bindings with Firebug or similar tools? To allow multiple independent sets of sources to be handled in and sets it as the thread-default context for the A new source type is created The resulting information
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