luc14n0/glib
1
0
Fork 0
mirror of https://gitlab.gnome.org/GNOME/glib.git synced 2024-12-27 16:06:16 +01:00
Code Issues Packages Projects Releases Wiki Activity
cf5d807881
glib/glib/gmain.h
Philip Withnall c1f94cd1a5 gmain: Minor documentation updates to idle-once and timeout-once funcs 
As suggested on !2684.

Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
2022-05-27 12:58:10 +01:00

859 lines
30 KiB
C
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/* gmain.h - the GLib Main loop
* Copyright (C) 1998-2000 Red Hat, Inc.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __G_MAIN_H__
#define __G_MAIN_H__
#if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
#error "Only <glib.h> can be included directly."
#endif
#include <glib/gpoll.h>
#include <glib/gslist.h>
#include <glib/gthread.h>
G_BEGIN_DECLS
typedef enum /*< flags >*/
{
G_IO_IN GLIB_SYSDEF_POLLIN,
G_IO_OUT GLIB_SYSDEF_POLLOUT,
G_IO_PRI GLIB_SYSDEF_POLLPRI,
G_IO_ERR GLIB_SYSDEF_POLLERR,
G_IO_HUP GLIB_SYSDEF_POLLHUP,
G_IO_NVAL GLIB_SYSDEF_POLLNVAL
} GIOCondition;
/**
* GMainContextFlags:
* @G_MAIN_CONTEXT_FLAGS_NONE: Default behaviour.
* @G_MAIN_CONTEXT_FLAGS_OWNERLESS_POLLING: Assume that polling for events will
* free the thread to process other jobs. That's useful if you're using
* `g_main_context_{prepare,query,check,dispatch}` to integrate GMainContext in
* other event loops.
*
* Flags to pass to g_main_context_new_with_flags() which affect the behaviour
* of a #GMainContext.
*
* Since: 2.72
*/
GLIB_AVAILABLE_TYPE_IN_2_72
typedef enum /*< flags >*/
{
G_MAIN_CONTEXT_FLAGS_NONE = 0,
G_MAIN_CONTEXT_FLAGS_OWNERLESS_POLLING = 1
} GMainContextFlags;
/**
* GMainContext:
*
* The `GMainContext` struct is an opaque data
* type representing a set of sources to be handled in a main loop.
*/
typedef struct _GMainContext GMainContext;
/**
* GMainLoop:
*
* The `GMainLoop` struct is an opaque data type
* representing the main event loop of a GLib or GTK+ application.
*/
typedef struct _GMainLoop GMainLoop;
/**
* GSource:
*
* The `GSource` struct is an opaque data type
* representing an event source.
*/
typedef struct _GSource GSource;
typedef struct _GSourcePrivate GSourcePrivate;
/**
* GSourceCallbackFuncs:
* @ref: Called when a reference is added to the callback object
* @unref: Called when a reference to the callback object is dropped
* @get: Called to extract the callback function and data from the
* callback object.
*
* The `GSourceCallbackFuncs` struct contains
* functions for managing callback objects.
*/
typedef struct _GSourceCallbackFuncs GSourceCallbackFuncs;
/**
* GSourceFuncs:
* @prepare: Called before all the file descriptors are polled. If the
* source can determine that it is ready here (without waiting for the
* results of the poll() call) it should return %TRUE. It can also return
* a @timeout_ value which should be the maximum timeout (in milliseconds)
* which should be passed to the poll() call. The actual timeout used will
* be -1 if all sources returned -1, or it will be the minimum of all
* the @timeout_ values returned which were >= 0. Since 2.36 this may
* be %NULL, in which case the effect is as if the function always returns
* %FALSE with a timeout of -1. If @prepare returns a
* timeout and the source also has a ready time set, then the
* lower of the two will be used.
* @check: Called after all the file descriptors are polled. The source
* should return %TRUE if it is ready to be dispatched. Note that some
* time may have passed since the previous prepare function was called,
* so the source should be checked again here. Since 2.36 this may
* be %NULL, in which case the effect is as if the function always returns
* %FALSE.
* @dispatch: Called to dispatch the event source, after it has returned
* %TRUE in either its @prepare or its @check function, or if a ready time
* has been reached. The @dispatch function receives a callback function and
* user data. The callback function may be %NULL if the source was never
* connected to a callback using g_source_set_callback(). The @dispatch
* function should call the callback function with @user_data and whatever
* additional parameters are needed for this type of event source. The
* return value of the @dispatch function should be %G_SOURCE_REMOVE if the
* source should be removed or %G_SOURCE_CONTINUE to keep it.
* @finalize: Called when the source is finalized. At this point, the source
* will have been destroyed, had its callback cleared, and have been removed
* from its #GMainContext, but it will still have its final reference count,
* so methods can be called on it from within this function.
*
* The `GSourceFuncs` struct contains a table of
* functions used to handle event sources in a generic manner.
*
* For idle sources, the prepare and check functions always return %TRUE
* to indicate that the source is always ready to be processed. The prepare
* function also returns a timeout value of 0 to ensure that the poll() call
* doesn't block (since that would be time wasted which could have been spent
* running the idle function).
*
* For timeout sources, the prepare and check functions both return %TRUE
* if the timeout interval has expired. The prepare function also returns
* a timeout value to ensure that the poll() call doesn't block too long
* and miss the next timeout.
*
* For file descriptor sources, the prepare function typically returns %FALSE,
* since it must wait until poll() has been called before it knows whether
* any events need to be processed. It sets the returned timeout to -1 to
* indicate that it doesn't mind how long the poll() call blocks. In the
* check function, it tests the results of the poll() call to see if the
* required condition has been met, and returns %TRUE if so.
*/
typedef struct _GSourceFuncs GSourceFuncs;
/**
* GPid:
*
* A type which is used to hold a process identification.
*
* On UNIX, processes are identified by a process id (an integer),
* while Windows uses process handles (which are pointers).
*
* GPid is used in GLib only for descendant processes spawned with
* the g_spawn functions.
*/
/* defined in glibconfig.h */
/**
* G_PID_FORMAT:
*
* A format specifier that can be used in printf()-style format strings
* when printing a #GPid.
*
* Since: 2.50
*/
/* defined in glibconfig.h */
/**
* GSourceFunc:
* @user_data: data passed to the function, set when the source was
* created with one of the above functions
*
* Specifies the type of function passed to g_timeout_add(),
* g_timeout_add_full(), g_idle_add(), and g_idle_add_full().
*
* When calling g_source_set_callback(), you may need to cast a function of a
* different type to this type. Use G_SOURCE_FUNC() to avoid warnings about
* incompatible function types.
*
* Returns: %FALSE if the source should be removed. %G_SOURCE_CONTINUE and
* %G_SOURCE_REMOVE are more memorable names for the return value.
*/
typedef gboolean (*GSourceFunc) (gpointer user_data);
/**
* GSourceOnceFunc:
* @user_data: data passed to the function, set when the source was
* created
*
* A source function that is only called once before being removed from the main
* context automatically.
*
* See: g_idle_add_once(), g_timeout_add_once()
*
* Since: 2.74
*/
typedef void (* GSourceOnceFunc) (gpointer user_data);
/**
* G_SOURCE_FUNC:
* @f: a function pointer.
*
* Cast a function pointer to a #GSourceFunc, suppressing warnings from GCC 8
* onwards with `-Wextra` or `-Wcast-function-type` enabled about the function
* types being incompatible.
*
* For example, the correct type of callback for a source created by
* g_child_watch_source_new() is #GChildWatchFunc, which accepts more arguments
* than #GSourceFunc. Casting the function with `(GSourceFunc)` to call
* g_source_set_callback() will trigger a warning, even though it will be cast
* back to the correct type before it is called by the source.
*
* Since: 2.58
*/
#define G_SOURCE_FUNC(f) ((GSourceFunc) (void (*)(void)) (f)) GLIB_AVAILABLE_MACRO_IN_2_58
/**
* GChildWatchFunc:
* @pid: the process id of the child process
* @wait_status: Status information about the child process, encoded
* in a platform-specific manner
* @user_data: user data passed to g_child_watch_add()
*
* Prototype of a #GChildWatchSource callback, called when a child
* process has exited.
*
* To interpret @wait_status, see the documentation
* for g_spawn_check_wait_status(). In particular,
* on Unix platforms, note that it is usually not equal
* to the integer passed to `exit()` or returned from `main()`.
*/
typedef void (*GChildWatchFunc) (GPid pid,
gint wait_status,
gpointer user_data);
/**
* GSourceDisposeFunc:
* @source: #GSource that is currently being disposed
*
* Dispose function for @source. See g_source_set_dispose_function() for
* details.
*
* Since: 2.64
*/
GLIB_AVAILABLE_TYPE_IN_2_64
typedef void (*GSourceDisposeFunc) (GSource *source);
struct _GSource
{
/*< private >*/
gpointer callback_data;
GSourceCallbackFuncs *callback_funcs;
const GSourceFuncs *source_funcs;
guint ref_count;
GMainContext *context;
gint priority;
guint flags;
guint source_id;
GSList *poll_fds;
GSource *prev;
GSource *next;
char *name;
GSourcePrivate *priv;
};
struct _GSourceCallbackFuncs
{
void (*ref) (gpointer cb_data);
void (*unref) (gpointer cb_data);
void (*get) (gpointer cb_data,
GSource *source,
GSourceFunc *func,
gpointer *data);
};
/**
* GSourceDummyMarshal:
*
* This is just a placeholder for #GClosureMarshal,
* which cannot be used here for dependency reasons.
*/
typedef void (*GSourceDummyMarshal) (void);
struct _GSourceFuncs
{
gboolean (*prepare) (GSource *source,
gint *timeout_);/* Can be NULL */
gboolean (*check) (GSource *source);/* Can be NULL */
gboolean (*dispatch) (GSource *source,
GSourceFunc callback,
gpointer user_data);
void (*finalize) (GSource *source); /* Can be NULL */
/*< private >*/
/* For use by g_source_set_closure */
GSourceFunc closure_callback;
GSourceDummyMarshal closure_marshal; /* Really is of type GClosureMarshal */
};
/* Standard priorities */
/**
* G_PRIORITY_HIGH:
*
* Use this for high priority event sources.
*
* It is not used within GLib or GTK+.
*/
#define G_PRIORITY_HIGH -100
/**
* G_PRIORITY_DEFAULT:
*
* Use this for default priority event sources.
*
* In GLib this priority is used when adding timeout functions
* with g_timeout_add(). In GDK this priority is used for events
* from the X server.
*/
#define G_PRIORITY_DEFAULT 0
/**
* G_PRIORITY_HIGH_IDLE:
*
* Use this for high priority idle functions.
*
* GTK+ uses %G_PRIORITY_HIGH_IDLE + 10 for resizing operations,
* and %G_PRIORITY_HIGH_IDLE + 20 for redrawing operations. (This is
* done to ensure that any pending resizes are processed before any
* pending redraws, so that widgets are not redrawn twice unnecessarily.)
*/
#define G_PRIORITY_HIGH_IDLE 100
/**
* G_PRIORITY_DEFAULT_IDLE:
*
* Use this for default priority idle functions.
*
* In GLib this priority is used when adding idle functions with
* g_idle_add().
*/
#define G_PRIORITY_DEFAULT_IDLE 200
/**
* G_PRIORITY_LOW:
*
* Use this for very low priority background tasks.
*
* It is not used within GLib or GTK+.
*/
#define G_PRIORITY_LOW 300
/**
* G_SOURCE_REMOVE:
*
* Use this macro as the return value of a #GSourceFunc to remove
* the #GSource from the main loop.
*
* Since: 2.32
*/
#define G_SOURCE_REMOVE FALSE
/**
* G_SOURCE_CONTINUE:
*
* Use this macro as the return value of a #GSourceFunc to leave
* the #GSource in the main loop.
*
* Since: 2.32
*/
#define G_SOURCE_CONTINUE TRUE
/* GMainContext: */
GLIB_AVAILABLE_IN_ALL
GMainContext *g_main_context_new (void);
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
GLIB_AVAILABLE_IN_2_72
GMainContext *g_main_context_new_with_flags (GMainContextFlags flags);
G_GNUC_END_IGNORE_DEPRECATIONS
GLIB_AVAILABLE_IN_ALL
GMainContext *g_main_context_ref (GMainContext *context);
GLIB_AVAILABLE_IN_ALL
void g_main_context_unref (GMainContext *context);
GLIB_AVAILABLE_IN_ALL
GMainContext *g_main_context_default (void);
GLIB_AVAILABLE_IN_ALL
gboolean g_main_context_iteration (GMainContext *context,
gboolean may_block);
GLIB_AVAILABLE_IN_ALL
gboolean g_main_context_pending (GMainContext *context);
/* For implementation of legacy interfaces
*/
GLIB_AVAILABLE_IN_ALL
GSource *g_main_context_find_source_by_id (GMainContext *context,
guint source_id);
GLIB_AVAILABLE_IN_ALL
GSource *g_main_context_find_source_by_user_data (GMainContext *context,
gpointer user_data);
GLIB_AVAILABLE_IN_ALL
GSource *g_main_context_find_source_by_funcs_user_data (GMainContext *context,
GSourceFuncs *funcs,
gpointer user_data);
/* Low level functions for implementing custom main loops.
*/
GLIB_AVAILABLE_IN_ALL
void g_main_context_wakeup (GMainContext *context);
GLIB_AVAILABLE_IN_ALL
gboolean g_main_context_acquire (GMainContext *context);
GLIB_AVAILABLE_IN_ALL
void g_main_context_release (GMainContext *context);
GLIB_AVAILABLE_IN_ALL
gboolean g_main_context_is_owner (GMainContext *context);
GLIB_DEPRECATED_IN_2_58_FOR(g_main_context_is_owner)
gboolean g_main_context_wait (GMainContext *context,
GCond *cond,
GMutex *mutex);
GLIB_AVAILABLE_IN_ALL
gboolean g_main_context_prepare (GMainContext *context,
gint *priority);
GLIB_AVAILABLE_IN_ALL
gint g_main_context_query (GMainContext *context,
gint max_priority,
gint *timeout_,
GPollFD *fds,
gint n_fds);
GLIB_AVAILABLE_IN_ALL
gboolean g_main_context_check (GMainContext *context,
gint max_priority,
GPollFD *fds,
gint n_fds);
GLIB_AVAILABLE_IN_ALL
void g_main_context_dispatch (GMainContext *context);
GLIB_AVAILABLE_IN_ALL
void g_main_context_set_poll_func (GMainContext *context,
GPollFunc func);
GLIB_AVAILABLE_IN_ALL
GPollFunc g_main_context_get_poll_func (GMainContext *context);
/* Low level functions for use by source implementations
*/
GLIB_AVAILABLE_IN_ALL
void g_main_context_add_poll (GMainContext *context,
GPollFD *fd,
gint priority);
GLIB_AVAILABLE_IN_ALL
void g_main_context_remove_poll (GMainContext *context,
GPollFD *fd);
GLIB_AVAILABLE_IN_ALL
gint g_main_depth (void);
GLIB_AVAILABLE_IN_ALL
GSource *g_main_current_source (void);
/* GMainContexts for other threads
*/
GLIB_AVAILABLE_IN_ALL
void g_main_context_push_thread_default (GMainContext *context);
GLIB_AVAILABLE_IN_ALL
void g_main_context_pop_thread_default (GMainContext *context);
GLIB_AVAILABLE_IN_ALL
GMainContext *g_main_context_get_thread_default (void);
GLIB_AVAILABLE_IN_ALL
GMainContext *g_main_context_ref_thread_default (void);
/**
* GMainContextPusher:
*
* Opaque type. See g_main_context_pusher_new() for details.
*
* Since: 2.64
*/
typedef void GMainContextPusher GLIB_AVAILABLE_TYPE_IN_2_64;
/**
* g_main_context_pusher_new:
* @main_context: (transfer none): a main context to push
*
* Push @main_context as the new thread-default main context for the current
* thread, using g_main_context_push_thread_default(), and return a new
* #GMainContextPusher. Pop with g_main_context_pusher_free(). Using
* g_main_context_pop_thread_default() on @main_context while a
* #GMainContextPusher exists for it can lead to undefined behaviour.
*
* Using two #GMainContextPushers in the same scope is not allowed, as it leads
* to an undefined pop order.
*
* This is intended to be used with g_autoptr(). Note that g_autoptr()
* is only available when using GCC or clang, so the following example
* will only work with those compilers:
* |[
* typedef struct
* {
* ...
* GMainContext *context;
* ...
* } MyObject;
*
* static void
* my_object_do_stuff (MyObject *self)
* {
* g_autoptr(GMainContextPusher) pusher = g_main_context_pusher_new (self->context);
*
* // Code with main context as the thread default here
*
* if (cond)
* // No need to pop
* return;
*
* // Optionally early pop
* g_clear_pointer (&pusher, g_main_context_pusher_free);
*
* // Code with main context no longer the thread default here
* }
* ]|
*
* Returns: (transfer full): a #GMainContextPusher
* Since: 2.64
*/
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
GLIB_AVAILABLE_STATIC_INLINE_IN_2_64
static inline GMainContextPusher *
g_main_context_pusher_new (GMainContext *main_context)
{
g_main_context_push_thread_default (main_context);
return (GMainContextPusher *) main_context;
}
G_GNUC_END_IGNORE_DEPRECATIONS
/**
* g_main_context_pusher_free:
* @pusher: (transfer full): a #GMainContextPusher
*
* Pop @pusher’s main context as the thread default main context.
* See g_main_context_pusher_new() for details.
*
* This will pop the #GMainContext as the current thread-default main context,
* but will not call g_main_context_unref() on it.
*
* Since: 2.64
*/
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
GLIB_AVAILABLE_STATIC_INLINE_IN_2_64
static inline void
g_main_context_pusher_free (GMainContextPusher *pusher)
{
g_main_context_pop_thread_default ((GMainContext *) pusher);
}
G_GNUC_END_IGNORE_DEPRECATIONS
/* GMainLoop: */
GLIB_AVAILABLE_IN_ALL
GMainLoop *g_main_loop_new (GMainContext *context,
gboolean is_running);
GLIB_AVAILABLE_IN_ALL
void g_main_loop_run (GMainLoop *loop);
GLIB_AVAILABLE_IN_ALL
void g_main_loop_quit (GMainLoop *loop);
GLIB_AVAILABLE_IN_ALL
GMainLoop *g_main_loop_ref (GMainLoop *loop);
GLIB_AVAILABLE_IN_ALL
void g_main_loop_unref (GMainLoop *loop);
GLIB_AVAILABLE_IN_ALL
gboolean g_main_loop_is_running (GMainLoop *loop);
GLIB_AVAILABLE_IN_ALL
GMainContext *g_main_loop_get_context (GMainLoop *loop);
/* GSource: */
GLIB_AVAILABLE_IN_ALL
GSource *g_source_new (GSourceFuncs *source_funcs,
guint struct_size);
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
GLIB_AVAILABLE_IN_2_64
void g_source_set_dispose_function (GSource *source,
GSourceDisposeFunc dispose);
G_GNUC_END_IGNORE_DEPRECATIONS
GLIB_AVAILABLE_IN_ALL
GSource *g_source_ref (GSource *source);
GLIB_AVAILABLE_IN_ALL
void g_source_unref (GSource *source);
GLIB_AVAILABLE_IN_ALL
guint g_source_attach (GSource *source,
GMainContext *context);
GLIB_AVAILABLE_IN_ALL
void g_source_destroy (GSource *source);
GLIB_AVAILABLE_IN_ALL
void g_source_set_priority (GSource *source,
gint priority);
GLIB_AVAILABLE_IN_ALL
gint g_source_get_priority (GSource *source);
GLIB_AVAILABLE_IN_ALL
void g_source_set_can_recurse (GSource *source,
gboolean can_recurse);
GLIB_AVAILABLE_IN_ALL
gboolean g_source_get_can_recurse (GSource *source);
GLIB_AVAILABLE_IN_ALL
guint g_source_get_id (GSource *source);
GLIB_AVAILABLE_IN_ALL
GMainContext *g_source_get_context (GSource *source);
GLIB_AVAILABLE_IN_ALL
void g_source_set_callback (GSource *source,
GSourceFunc func,
gpointer data,
GDestroyNotify notify);
GLIB_AVAILABLE_IN_ALL
void g_source_set_funcs (GSource *source,
GSourceFuncs *funcs);
GLIB_AVAILABLE_IN_ALL
gboolean g_source_is_destroyed (GSource *source);
GLIB_AVAILABLE_IN_ALL
void g_source_set_name (GSource *source,
const char *name);
GLIB_AVAILABLE_IN_2_70
void g_source_set_static_name (GSource *source,
const char *name);
GLIB_AVAILABLE_IN_ALL
const char * g_source_get_name (GSource *source);
GLIB_AVAILABLE_IN_ALL
void g_source_set_name_by_id (guint tag,
const char *name);
GLIB_AVAILABLE_IN_2_36
void g_source_set_ready_time (GSource *source,
gint64 ready_time);
GLIB_AVAILABLE_IN_2_36
gint64 g_source_get_ready_time (GSource *source);
#ifdef G_OS_UNIX
GLIB_AVAILABLE_IN_2_36
gpointer g_source_add_unix_fd (GSource *source,
gint fd,
GIOCondition events);
GLIB_AVAILABLE_IN_2_36
void g_source_modify_unix_fd (GSource *source,
gpointer tag,
GIOCondition new_events);
GLIB_AVAILABLE_IN_2_36
void g_source_remove_unix_fd (GSource *source,
gpointer tag);
GLIB_AVAILABLE_IN_2_36
GIOCondition g_source_query_unix_fd (GSource *source,
gpointer tag);
#endif
/* Used to implement g_source_connect_closure and internally*/
GLIB_AVAILABLE_IN_ALL
void g_source_set_callback_indirect (GSource *source,
gpointer callback_data,
GSourceCallbackFuncs *callback_funcs);
GLIB_AVAILABLE_IN_ALL
void g_source_add_poll (GSource *source,
GPollFD *fd);
GLIB_AVAILABLE_IN_ALL
void g_source_remove_poll (GSource *source,
GPollFD *fd);
GLIB_AVAILABLE_IN_ALL
void g_source_add_child_source (GSource *source,
GSource *child_source);
GLIB_AVAILABLE_IN_ALL
void g_source_remove_child_source (GSource *source,
GSource *child_source);
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
GLIB_DEPRECATED_IN_2_28_FOR(g_source_get_time)
void g_source_get_current_time (GSource *source,
GTimeVal *timeval);
G_GNUC_END_IGNORE_DEPRECATIONS
GLIB_AVAILABLE_IN_ALL
gint64 g_source_get_time (GSource *source);
/* void g_source_connect_closure (GSource *source,
GClosure *closure);
*/
/* Specific source types
*/
GLIB_AVAILABLE_IN_ALL
GSource *g_idle_source_new (void);
GLIB_AVAILABLE_IN_ALL
GSource *g_child_watch_source_new (GPid pid);
GLIB_AVAILABLE_IN_ALL
GSource *g_timeout_source_new (guint interval);
GLIB_AVAILABLE_IN_ALL
GSource *g_timeout_source_new_seconds (guint interval);
/* Miscellaneous functions
*/
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
GLIB_DEPRECATED_IN_2_62_FOR(g_get_real_time)
void g_get_current_time (GTimeVal *result);
G_GNUC_END_IGNORE_DEPRECATIONS
GLIB_AVAILABLE_IN_ALL
gint64 g_get_monotonic_time (void);
GLIB_AVAILABLE_IN_ALL
gint64 g_get_real_time (void);
/* Source manipulation by ID */
GLIB_AVAILABLE_IN_ALL
gboolean g_source_remove (guint tag);
GLIB_AVAILABLE_IN_ALL
gboolean g_source_remove_by_user_data (gpointer user_data);
GLIB_AVAILABLE_IN_ALL
gboolean g_source_remove_by_funcs_user_data (GSourceFuncs *funcs,
gpointer user_data);
/**
* GClearHandleFunc:
* @handle_id: the handle ID to clear
*
* Specifies the type of function passed to g_clear_handle_id().
* The implementation is expected to free the resource identified
* by @handle_id; for instance, if @handle_id is a #GSource ID,
* g_source_remove() can be used.
*
* Since: 2.56
*/
typedef void (* GClearHandleFunc) (guint handle_id);
GLIB_AVAILABLE_IN_2_56
void g_clear_handle_id (guint *tag_ptr,
GClearHandleFunc clear_func);
#define g_clear_handle_id(tag_ptr, clear_func) \
G_STMT_START { \
G_STATIC_ASSERT (sizeof *(tag_ptr) == sizeof (guint)); \
guint *_tag_ptr = (guint *) (tag_ptr); \
guint _handle_id; \
\
_handle_id = *_tag_ptr; \
if (_handle_id > 0) \
{ \
*_tag_ptr = 0; \
clear_func (_handle_id); \
} \
} G_STMT_END \
GLIB_AVAILABLE_MACRO_IN_2_56
/* Idles, child watchers and timeouts */
GLIB_AVAILABLE_IN_ALL
guint g_timeout_add_full (gint priority,
guint interval,
GSourceFunc function,
gpointer data,
GDestroyNotify notify);
GLIB_AVAILABLE_IN_ALL
guint g_timeout_add (guint interval,
GSourceFunc function,
gpointer data);
GLIB_AVAILABLE_IN_2_74
guint g_timeout_add_once (guint interval,
GSourceOnceFunc function,
gpointer data);
GLIB_AVAILABLE_IN_ALL
guint g_timeout_add_seconds_full (gint priority,
guint interval,
GSourceFunc function,
gpointer data,
GDestroyNotify notify);
GLIB_AVAILABLE_IN_ALL
guint g_timeout_add_seconds (guint interval,
GSourceFunc function,
gpointer data);
GLIB_AVAILABLE_IN_ALL
guint g_child_watch_add_full (gint priority,
GPid pid,
GChildWatchFunc function,
gpointer data,
GDestroyNotify notify);
GLIB_AVAILABLE_IN_ALL
guint g_child_watch_add (GPid pid,
GChildWatchFunc function,
gpointer data);
GLIB_AVAILABLE_IN_ALL
guint g_idle_add (GSourceFunc function,
gpointer data);
GLIB_AVAILABLE_IN_ALL
guint g_idle_add_full (gint priority,
GSourceFunc function,
gpointer data,
GDestroyNotify notify);
GLIB_AVAILABLE_IN_2_74
guint g_idle_add_once (GSourceOnceFunc function,
gpointer data);
GLIB_AVAILABLE_IN_ALL
gboolean g_idle_remove_by_data (gpointer data);
GLIB_AVAILABLE_IN_ALL
void g_main_context_invoke_full (GMainContext *context,
gint priority,
GSourceFunc function,
gpointer data,
GDestroyNotify notify);
GLIB_AVAILABLE_IN_ALL
void g_main_context_invoke (GMainContext *context,
GSourceFunc function,
gpointer data);
GLIB_AVAILABLE_STATIC_INLINE_IN_2_70
static inline int
g_steal_fd (int *fd_ptr)
{
int fd = *fd_ptr;
*fd_ptr = -1;
return fd;
}
/* Hook for GClosure / GSource integration. Don't touch */
GLIB_VAR GSourceFuncs g_timeout_funcs;
GLIB_VAR GSourceFuncs g_child_watch_funcs;
GLIB_VAR GSourceFuncs g_idle_funcs;
#ifdef G_OS_UNIX
GLIB_VAR GSourceFuncs g_unix_signal_funcs;
GLIB_VAR GSourceFuncs g_unix_fd_source_funcs;
#endif
G_END_DECLS
#endif /* __G_MAIN_H__ */
Reference in New Issue View Git Blame Copy Permalink