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- /* gmain.h - the GLib Main loop
- * Copyright (C) 1998-2000 Red Hat, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 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
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
- #ifndef __G_MAIN_H__
- #define __G_MAIN_H__
-
- #include <glib/gslist.h>
- #include <glib/gthread.h>
-
- G_BEGIN_DECLS
-
- typedef struct _GMainContext GMainContext; /* Opaque */
- typedef struct _GMainLoop GMainLoop; /* Opaque */
- typedef struct _GSource GSource;
- typedef struct _GSourceCallbackFuncs GSourceCallbackFuncs;
- typedef struct _GSourceFuncs GSourceFuncs;
-
- typedef gboolean (*GSourceFunc) (gpointer data);
- typedef void (*GChildWatchFunc) (GPid pid,
- gint status,
- gpointer data);
- struct _GSource
- {
- /*< private >*/
- gpointer callback_data;
- GSourceCallbackFuncs *callback_funcs;
-
- GSourceFuncs *source_funcs;
- guint ref_count;
-
- GMainContext *context;
-
- gint priority;
- guint flags;
- guint source_id;
-
- GSList *poll_fds;
-
- GSource *prev;
- GSource *next;
-
- gpointer reserved1;
- gpointer reserved2;
- };
-
- struct _GSourceCallbackFuncs
- {
- void (*ref) (gpointer cb_data);
- void (*unref) (gpointer cb_data);
- void (*get) (gpointer cb_data,
- GSource *source,
- GSourceFunc *func,
- gpointer *data);
- };
-
- typedef void (*GSourceDummyMarshal) (void);
-
- struct _GSourceFuncs
- {
- gboolean (*prepare) (GSource *source,
- gint *timeout_);
- gboolean (*check) (GSource *source);
- gboolean (*dispatch) (GSource *source,
- GSourceFunc callback,
- gpointer user_data);
- void (*finalize) (GSource *source); /* Can be NULL */
-
- /* For use by g_source_set_closure */
- GSourceFunc closure_callback;
- GSourceDummyMarshal closure_marshal; /* Really is of type GClosureMarshal */
- };
-
- /* Any definitions using GPollFD or GPollFunc are primarily
- * for Unix and not guaranteed to be the compatible on all
- * operating systems on which GLib runs. Right now, the
- * GLib does use these functions on Win32 as well, but interprets
- * them in a fairly different way than on Unix. If you use
- * these definitions, you are should be prepared to recode
- * for different operating systems.
- *
- *
- * On Win32, the fd in a GPollFD should be Win32 HANDLE (*not* a file
- * descriptor as provided by the C runtime) that can be used by
- * MsgWaitForMultipleObjects. This does *not* include file handles
- * from CreateFile, SOCKETs, nor pipe handles. (But you can use
- * WSAEventSelect to signal events when a SOCKET is readable).
- *
- * On Win32, fd can also be the special value G_WIN32_MSG_HANDLE to
- * indicate polling for messages.
- *
- * But note that G_WIN32_MSG_HANDLE GPollFDs should not be used by GDK
- * (GTK) programs, as GDK itself wants to read messages and convert them
- * to GDK events.
- *
- * So, unless you really know what you are doing, it's best not to try
- * to use the main loop polling stuff for your own needs on
- * Win32. It's really only written for the GIMP's needs so
- * far.
- */
- typedef struct _GPollFD GPollFD;
- typedef gint (*GPollFunc) (GPollFD *ufds,
- guint nfsd,
- gint timeout_);
-
- struct _GPollFD
- {
- gint fd;
- gushort events;
- gushort revents;
- };
-
- /* Standard priorities */
-
- #define G_PRIORITY_HIGH -100
- #define G_PRIORITY_DEFAULT 0
- #define G_PRIORITY_HIGH_IDLE 100
- #define G_PRIORITY_DEFAULT_IDLE 200
- #define G_PRIORITY_LOW 300
-
- /* GMainContext: */
-
- GMainContext *g_main_context_new (void);
- GMainContext *g_main_context_ref (GMainContext *context);
- void g_main_context_unref (GMainContext *context);
- GMainContext *g_main_context_default (void);
-
- gboolean g_main_context_iteration (GMainContext *context,
- gboolean may_block);
- gboolean g_main_context_pending (GMainContext *context);
-
- /* For implementation of legacy interfaces
- */
- GSource *g_main_context_find_source_by_id (GMainContext *context,
- guint source_id);
- GSource *g_main_context_find_source_by_user_data (GMainContext *context,
- gpointer user_data);
- 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.
- */
- void g_main_context_wakeup (GMainContext *context);
- gboolean g_main_context_acquire (GMainContext *context);
- void g_main_context_release (GMainContext *context);
- gboolean g_main_context_wait (GMainContext *context,
- GCond *cond,
- GMutex *mutex);
-
- gboolean g_main_context_prepare (GMainContext *context,
- gint *priority);
- gint g_main_context_query (GMainContext *context,
- gint max_priority,
- gint *timeout_,
- GPollFD *fds,
- gint n_fds);
- gint g_main_context_check (GMainContext *context,
- gint max_priority,
- GPollFD *fds,
- gint n_fds);
- void g_main_context_dispatch (GMainContext *context);
-
- void g_main_context_set_poll_func (GMainContext *context,
- GPollFunc func);
- GPollFunc g_main_context_get_poll_func (GMainContext *context);
-
- /* Low level functions for use by source implementations
- */
- void g_main_context_add_poll (GMainContext *context,
- GPollFD *fd,
- gint priority);
- void g_main_context_remove_poll (GMainContext *context,
- GPollFD *fd);
-
- int g_main_depth (void);
-
- /* GMainLoop: */
-
- GMainLoop *g_main_loop_new (GMainContext *context,
- gboolean is_running);
- void g_main_loop_run (GMainLoop *loop);
- void g_main_loop_quit (GMainLoop *loop);
- GMainLoop *g_main_loop_ref (GMainLoop *loop);
- void g_main_loop_unref (GMainLoop *loop);
- gboolean g_main_loop_is_running (GMainLoop *loop);
- GMainContext *g_main_loop_get_context (GMainLoop *loop);
-
- /* GSource: */
-
- GSource *g_source_new (GSourceFuncs *source_funcs,
- guint struct_size);
- GSource *g_source_ref (GSource *source);
- void g_source_unref (GSource *source);
-
- guint g_source_attach (GSource *source,
- GMainContext *context);
- void g_source_destroy (GSource *source);
-
- void g_source_set_priority (GSource *source,
- gint priority);
- gint g_source_get_priority (GSource *source);
- void g_source_set_can_recurse (GSource *source,
- gboolean can_recurse);
- gboolean g_source_get_can_recurse (GSource *source);
- guint g_source_get_id (GSource *source);
-
- GMainContext *g_source_get_context (GSource *source);
-
- void g_source_set_callback (GSource *source,
- GSourceFunc func,
- gpointer data,
- GDestroyNotify notify);
-
-
- /* Used to implement g_source_connect_closure and internally*/
- void g_source_set_callback_indirect (GSource *source,
- gpointer callback_data,
- GSourceCallbackFuncs *callback_funcs);
-
- void g_source_add_poll (GSource *source,
- GPollFD *fd);
- void g_source_remove_poll (GSource *source,
- GPollFD *fd);
-
- void g_source_get_current_time (GSource *source,
- GTimeVal *timeval);
-
- /* void g_source_connect_closure (GSource *source,
- GClosure *closure);
- */
-
- /* Specific source types
- */
- GSource *g_idle_source_new (void);
- GSource *g_child_watch_source_new (GPid pid);
- GSource *g_timeout_source_new (guint interval);
-
- /* Miscellaneous functions
- */
- void g_get_current_time (GTimeVal *result);
-
- /* ============== Compat main loop stuff ================== */
-
- #ifndef G_DISABLE_DEPRECATED
-
- /* Legacy names for GMainLoop functions
- */
- #define g_main_new(is_running) g_main_loop_new (NULL, is_running);
- #define g_main_run(loop) g_main_loop_run(loop)
- #define g_main_quit(loop) g_main_loop_quit(loop)
- #define g_main_destroy(loop) g_main_loop_unref(loop)
- #define g_main_is_running(loop) g_main_loop_is_running(loop)
-
- /* Functions to manipulate the default main loop
- */
-
- #define g_main_iteration(may_block) g_main_context_iteration (NULL, may_block)
- #define g_main_pending() g_main_context_pending (NULL)
-
- #define g_main_set_poll_func(func) g_main_context_set_poll_func (NULL, func)
-
- #endif /* G_DISABLE_DEPRECATED */
-
- /* Source manipulation by ID */
- gboolean g_source_remove (guint tag);
- gboolean g_source_remove_by_user_data (gpointer user_data);
- gboolean g_source_remove_by_funcs_user_data (GSourceFuncs *funcs,
- gpointer user_data);
-
- /* Idles, child watchers and timeouts */
- guint g_timeout_add_full (gint priority,
- guint interval,
- GSourceFunc function,
- gpointer data,
- GDestroyNotify notify);
- guint g_timeout_add (guint interval,
- GSourceFunc function,
- gpointer data);
- guint g_child_watch_add_full (gint priority,
- GPid pid,
- GChildWatchFunc function,
- gpointer data,
- GDestroyNotify notify);
- guint g_child_watch_add (GPid pid,
- GChildWatchFunc function,
- gpointer data);
- guint g_idle_add (GSourceFunc function,
- gpointer data);
- guint g_idle_add_full (gint priority,
- GSourceFunc function,
- gpointer data,
- GDestroyNotify notify);
- gboolean g_idle_remove_by_data (gpointer data);
-
- /* 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;
-
- G_END_DECLS
-
- #endif /* __G_MAIN_H__ */
-