glib/gmain.h

   1 /* gmain.h - the GLib Main loop
   2  * Copyright (C) 1998-2000 Red Hat, Inc.
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifndef __G_MAIN_H__
  21 #define __G_MAIN_H__
  22
  23 #if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
  24 #error "Only <glib.h> can be included directly."
  25 #endif
  26
  27 #include <glib/gpoll.h>
  28 #include <glib/gslist.h>
  29 #include <glib/gthread.h>
  30
  31 G_BEGIN_DECLS
  32
  33 typedef enum /*< flags >*/
  34 {
  35   G_IO_IN       GLIB_SYSDEF_POLLIN,
  36   G_IO_OUT      GLIB_SYSDEF_POLLOUT,
  37   G_IO_PRI      GLIB_SYSDEF_POLLPRI,
  38   G_IO_ERR      GLIB_SYSDEF_POLLERR,
  39   G_IO_HUP      GLIB_SYSDEF_POLLHUP,
  40   G_IO_NVAL     GLIB_SYSDEF_POLLNVAL
  41 } GIOCondition;
  42
  43
  44 /**
  45  * GMainContext:
  46  *
  47  * The <structname>GMainContext</structname> struct is an opaque data
  48  * type representing a set of sources to be handled in a main loop.
  49  */
  50 typedef struct _GMainContext            GMainContext;
  51
  52 /**
  53  * GMainLoop:
  54  *
  55  * The <structname>GMainLoop</structname> struct is an opaque data type
  56  * representing the main event loop of a GLib or GTK+ application.
  57  */
  58 typedef struct _GMainLoop               GMainLoop;
  59
  60 /**
  61  * GSource:
  62  *
  63  * The <structname>GSource</structname> struct is an opaque data type
  64  * representing an event source.
  65  */
  66 typedef struct _GSource                 GSource;
  67 typedef struct _GSourcePrivate          GSourcePrivate;
  68
  69 /**
  70  * GSourceCallbackFuncs:
  71  * @ref: Called when a reference is added to the callback object
  72  * @unref: Called when a reference to the callback object is dropped
  73  * @get: Called to extract the callback function and data from the
  74  *     callback object.
  75
  76  * The <structname>GSourceCallbackFuncs</structname> struct contains
  77  * functions for managing callback objects.
  78  */
  79 typedef struct _GSourceCallbackFuncs    GSourceCallbackFuncs;
  80
  81 /**
  82  * GSourceFuncs:
  83  * @prepare: Called before all the file descriptors are polled. If the
  84  *     source can determine that it is ready here (without waiting for the
  85  *     results of the poll() call) it should return %TRUE. It can also return
  86  *     a @timeout_ value which should be the maximum timeout (in milliseconds)
  87  *     which should be passed to the poll() call. The actual timeout used will
  88  *     be -1 if all sources returned -1, or it will be the minimum of all the
  89  *     @timeout_ values returned which were >= 0.  Since 2.36 this may
  90  *     be %NULL, in which case the effect is as if the function always
  91  *     returns %FALSE with a timeout of -1.  If @prepare returns a
  92  *     timeout and the source also has a 'ready time' set then the
  93  *     nearer of the two will be used.
  94  * @check: Called after all the file descriptors are polled. The source
  95  *     should return %TRUE if it is ready to be dispatched. Note that some
  96  *     time may have passed since the previous prepare function was called,
  97  *     so the source should be checked again here.  Since 2.36 this may
  98  *     be %NULL, in which case the effect is as if the function always
  99  *     returns %FALSE.
 100  * @dispatch: Called to dispatch the event source, after it has returned
 101  *     %TRUE in either its @prepare or its @check function. The @dispatch
 102  *     function is passed in a callback function and data. The callback
 103  *     function may be %NULL if the source was never connected to a callback
 104  *     using g_source_set_callback(). The @dispatch function should call the
 105  *     callback function with @user_data and whatever additional parameters
 106  *     are needed for this type of event source.
 107  * @finalize: Called when the source is finalized.
 108  *
 109  * The <structname>GSourceFuncs</structname> struct contains a table of
 110  * functions used to handle event sources in a generic manner.
 111  *
 112  * For idle sources, the prepare and check functions always return %TRUE
 113  * to indicate that the source is always ready to be processed. The prepare
 114  * function also returns a timeout value of 0 to ensure that the poll() call
 115  * doesn't block (since that would be time wasted which could have been spent
 116  * running the idle function).
 117  *
 118  * For timeout sources, the prepare and check functions both return %TRUE
 119  * if the timeout interval has expired. The prepare function also returns
 120  * a timeout value to ensure that the poll() call doesn't block too long
 121  * and miss the next timeout.
 122  *
 123  * For file descriptor sources, the prepare function typically returns %FALSE,
 124  * since it must wait until poll() has been called before it knows whether
 125  * any events need to be processed. It sets the returned timeout to -1 to
 126  * indicate that it doesn't mind how long the poll() call blocks. In the
 127  * check function, it tests the results of the poll() call to see if the
 128  * required condition has been met, and returns %TRUE if so.
 129  */
 130 typedef struct _GSourceFuncs            GSourceFuncs;
 131
 132 /**
 133  * GPid:
 134  *
 135  * A type which is used to hold a process identification.
 136  *
 137  * On UNIX, processes are identified by a process id (an integer),
 138  * while Windows uses process handles (which are pointers).
 139  *
 140  * GPid is used in GLib only for descendant processes spawned with
 141  * the g_spawn functions.
 142  */
 143
 144 /**
 145  * GSourceFunc:
 146  * @user_data: data passed to the function, set when the source was
 147  *     created with one of the above functions
 148  *
 149  * Specifies the type of function passed to g_timeout_add(),
 150  * g_timeout_add_full(), g_idle_add(), and g_idle_add_full().
 151  *
 152  * Returns: %FALSE if the source should be removed
 153  */
 154 typedef gboolean (*GSourceFunc)       (gpointer user_data);
 155
 156 /**
 157  * GChildWatchFunc:
 158  * @pid: the process id of the child process
 159  * @status: Status information about the child process, encoded
 160  *     in a platform-specific manner
 161  * @user_data: user data passed to g_child_watch_add()
 162  *
 163  * Prototype of a #GChildWatchSource callback, called when a child
 164  * process has exited.  To interpret @status, see the documentation
 165  * for g_spawn_check_exit_status().
 166  */
 167 typedef void     (*GChildWatchFunc)   (GPid     pid,
 168                                        gint     status,
 169                                        gpointer user_data);
 170 struct _GSource
 171 {
 172   /*< private >*/
 173   gpointer callback_data;
 174   GSourceCallbackFuncs *callback_funcs;
 175
 176   const GSourceFuncs *source_funcs;
 177   guint ref_count;
 178
 179   GMainContext *context;
 180
 181   gint priority;
 182   guint flags;
 183   guint source_id;
 184
 185   GSList *poll_fds;
 186
 187   GSource *prev;
 188   GSource *next;
 189
 190   char    *name;
 191
 192   GSourcePrivate *priv;
 193 };
 194
 195 struct _GSourceCallbackFuncs
 196 {
 197   void (*ref)   (gpointer     cb_data);
 198   void (*unref) (gpointer     cb_data);
 199   void (*get)   (gpointer     cb_data,
 200                  GSource     *source,
 201                  GSourceFunc *func,
 202                  gpointer    *data);
 203 };
 204
 205 /**
 206  * GSourceDummyMarshal:
 207  *
 208  * This is just a placeholder for #GClosureMarshal,
 209  * which cannot be used here for dependency reasons.
 210  */
 211 typedef void (*GSourceDummyMarshal) (void);
 212
 213 struct _GSourceFuncs
 214 {
 215   gboolean (*prepare)  (GSource    *source,
 216                         gint       *timeout_);
 217   gboolean (*check)    (GSource    *source);
 218   gboolean (*dispatch) (GSource    *source,
 219                         GSourceFunc callback,
 220                         gpointer    user_data);
 221   void     (*finalize) (GSource    *source); /* Can be NULL */
 222
 223   /*< private >*/
 224   /* For use by g_source_set_closure */
 225   GSourceFunc     closure_callback;
 226   GSourceDummyMarshal closure_marshal; /* Really is of type GClosureMarshal */
 227 };
 228
 229 /* Standard priorities */
 230
 231 /**
 232  * G_PRIORITY_HIGH:
 233  *
 234  * Use this for high priority event sources.
 235  *
 236  * It is not used within GLib or GTK+.
 237  */
 238 #define G_PRIORITY_HIGH            -100
 239
 240 /**
 241  * G_PRIORITY_DEFAULT:
 242  *
 243  * Use this for default priority event sources.
 244  *
 245  * In GLib this priority is used when adding timeout functions
 246  * with g_timeout_add(). In GDK this priority is used for events
 247  * from the X server.
 248  */
 249 #define G_PRIORITY_DEFAULT          0
 250
 251 /**
 252  * G_PRIORITY_HIGH_IDLE:
 253  *
 254  * Use this for high priority idle functions.
 255  *
 256  * GTK+ uses #G_PRIORITY_HIGH_IDLE + 10 for resizing operations,
 257  * and #G_PRIORITY_HIGH_IDLE + 20 for redrawing operations. (This is
 258  * done to ensure that any pending resizes are processed before any
 259  * pending redraws, so that widgets are not redrawn twice unnecessarily.)
 260  */
 261 #define G_PRIORITY_HIGH_IDLE        100
 262
 263 /**
 264  * G_PRIORITY_DEFAULT_IDLE:
 265  *
 266  * Use this for default priority idle functions.
 267  *
 268  * In GLib this priority is used when adding idle functions with
 269  * g_idle_add().
 270  */
 271 #define G_PRIORITY_DEFAULT_IDLE     200
 272
 273 /**
 274  * G_PRIORITY_LOW:
 275  *
 276  * Use this for very low priority background tasks.
 277  *
 278  * It is not used within GLib or GTK+.
 279  */
 280 #define G_PRIORITY_LOW              300
 281
 282 /**
 283  * G_SOURCE_REMOVE:
 284  *
 285  * Use this macro as the return value of a #GSourceFunc to remove
 286  * the #GSource from the main loop.
 287  *
 288  * Since: 2.32
 289  */
 290 #define G_SOURCE_REMOVE         FALSE
 291
 292 /**
 293  * G_SOURCE_CONTINUE:
 294  *
 295  * Use this macro as the return value of a #GSourceFunc to leave
 296  * the #GSource in the main loop.
 297  *
 298  * Since: 2.32
 299  */
 300 #define G_SOURCE_CONTINUE       TRUE
 301
 302 /* GMainContext: */
 303
 304 GLIB_AVAILABLE_IN_ALL
 305 GMainContext *g_main_context_new       (void);
 306 GLIB_AVAILABLE_IN_ALL
 307 GMainContext *g_main_context_ref       (GMainContext *context);
 308 GLIB_AVAILABLE_IN_ALL
 309 void          g_main_context_unref     (GMainContext *context);
 310 GLIB_AVAILABLE_IN_ALL
 311 GMainContext *g_main_context_default   (void);
 312
 313 GLIB_AVAILABLE_IN_ALL
 314 gboolean      g_main_context_iteration (GMainContext *context,
 315                                         gboolean      may_block);
 316 GLIB_AVAILABLE_IN_ALL
 317 gboolean      g_main_context_pending   (GMainContext *context);
 318
 319 /* For implementation of legacy interfaces
 320  */
 321 GLIB_AVAILABLE_IN_ALL
 322 GSource      *g_main_context_find_source_by_id              (GMainContext *context,
 323                                                              guint         source_id);
 324 GLIB_AVAILABLE_IN_ALL
 325 GSource      *g_main_context_find_source_by_user_data       (GMainContext *context,
 326                                                              gpointer      user_data);
 327 GLIB_AVAILABLE_IN_ALL
 328 GSource      *g_main_context_find_source_by_funcs_user_data (GMainContext *context,
 329                                                              GSourceFuncs *funcs,
 330                                                              gpointer      user_data);
 331
 332 /* Low level functions for implementing custom main loops.
 333  */
 334 GLIB_AVAILABLE_IN_ALL
 335 void     g_main_context_wakeup  (GMainContext *context);
 336 GLIB_AVAILABLE_IN_ALL
 337 gboolean g_main_context_acquire (GMainContext *context);
 338 GLIB_AVAILABLE_IN_ALL
 339 void     g_main_context_release (GMainContext *context);
 340 GLIB_AVAILABLE_IN_ALL
 341 gboolean g_main_context_is_owner (GMainContext *context);
 342 GLIB_AVAILABLE_IN_ALL
 343 gboolean g_main_context_wait    (GMainContext *context,
 344                                  GCond        *cond,
 345                                  GMutex       *mutex);
 346
 347 GLIB_AVAILABLE_IN_ALL
 348 gboolean g_main_context_prepare  (GMainContext *context,
 349                                   gint         *priority);
 350 GLIB_AVAILABLE_IN_ALL
 351 gint     g_main_context_query    (GMainContext *context,
 352                                   gint          max_priority,
 353                                   gint         *timeout_,
 354                                   GPollFD      *fds,
 355                                   gint          n_fds);
 356 GLIB_AVAILABLE_IN_ALL
 357 gint     g_main_context_check    (GMainContext *context,
 358                                   gint          max_priority,
 359                                   GPollFD      *fds,
 360                                   gint          n_fds);
 361 GLIB_AVAILABLE_IN_ALL
 362 void     g_main_context_dispatch (GMainContext *context);
 363
 364 GLIB_AVAILABLE_IN_ALL
 365 void     g_main_context_set_poll_func (GMainContext *context,
 366                                        GPollFunc     func);
 367 GLIB_AVAILABLE_IN_ALL
 368 GPollFunc g_main_context_get_poll_func (GMainContext *context);
 369
 370 /* Low level functions for use by source implementations
 371  */
 372 GLIB_AVAILABLE_IN_ALL
 373 void     g_main_context_add_poll    (GMainContext *context,
 374                                      GPollFD      *fd,
 375                                      gint          priority);
 376 GLIB_AVAILABLE_IN_ALL
 377 void     g_main_context_remove_poll (GMainContext *context,
 378                                      GPollFD      *fd);
 379
 380 GLIB_AVAILABLE_IN_ALL
 381 gint     g_main_depth               (void);
 382 GLIB_AVAILABLE_IN_ALL
 383 GSource *g_main_current_source      (void);
 384
 385 /* GMainContexts for other threads
 386  */
 387 GLIB_AVAILABLE_IN_ALL
 388 void          g_main_context_push_thread_default (GMainContext *context);
 389 GLIB_AVAILABLE_IN_ALL
 390 void          g_main_context_pop_thread_default  (GMainContext *context);
 391 GLIB_AVAILABLE_IN_ALL
 392 GMainContext *g_main_context_get_thread_default  (void);
 393 GLIB_AVAILABLE_IN_ALL
 394 GMainContext *g_main_context_ref_thread_default  (void);
 395
 396 /* GMainLoop: */
 397
 398 GLIB_AVAILABLE_IN_ALL
 399 GMainLoop *g_main_loop_new        (GMainContext *context,
 400                                    gboolean      is_running);
 401 GLIB_AVAILABLE_IN_ALL
 402 void       g_main_loop_run        (GMainLoop    *loop);
 403 GLIB_AVAILABLE_IN_ALL
 404 void       g_main_loop_quit       (GMainLoop    *loop);
 405 GLIB_AVAILABLE_IN_ALL
 406 GMainLoop *g_main_loop_ref        (GMainLoop    *loop);
 407 GLIB_AVAILABLE_IN_ALL
 408 void       g_main_loop_unref      (GMainLoop    *loop);
 409 GLIB_AVAILABLE_IN_ALL
 410 gboolean   g_main_loop_is_running (GMainLoop    *loop);
 411 GLIB_AVAILABLE_IN_ALL
 412 GMainContext *g_main_loop_get_context (GMainLoop    *loop);
 413
 414 /* GSource: */
 415
 416 GLIB_AVAILABLE_IN_ALL
 417 GSource *g_source_new             (GSourceFuncs   *source_funcs,
 418                                    guint           struct_size);
 419 GLIB_AVAILABLE_IN_ALL
 420 GSource *g_source_ref             (GSource        *source);
 421 GLIB_AVAILABLE_IN_ALL
 422 void     g_source_unref           (GSource        *source);
 423
 424 GLIB_AVAILABLE_IN_ALL
 425 guint    g_source_attach          (GSource        *source,
 426                                    GMainContext   *context);
 427 GLIB_AVAILABLE_IN_ALL
 428 void     g_source_destroy         (GSource        *source);
 429
 430 GLIB_AVAILABLE_IN_ALL
 431 void     g_source_set_priority    (GSource        *source,
 432                                    gint            priority);
 433 GLIB_AVAILABLE_IN_ALL
 434 gint     g_source_get_priority    (GSource        *source);
 435 GLIB_AVAILABLE_IN_ALL
 436 void     g_source_set_can_recurse (GSource        *source,
 437                                    gboolean        can_recurse);
 438 GLIB_AVAILABLE_IN_ALL
 439 gboolean g_source_get_can_recurse (GSource        *source);
 440 GLIB_AVAILABLE_IN_ALL
 441 guint    g_source_get_id          (GSource        *source);
 442
 443 GLIB_AVAILABLE_IN_ALL
 444 GMainContext *g_source_get_context (GSource       *source);
 445
 446 GLIB_AVAILABLE_IN_ALL
 447 void     g_source_set_callback    (GSource        *source,
 448                                    GSourceFunc     func,
 449                                    gpointer        data,
 450                                    GDestroyNotify  notify);
 451
 452 GLIB_AVAILABLE_IN_ALL
 453 void     g_source_set_funcs       (GSource        *source,
 454                                    GSourceFuncs   *funcs);
 455 GLIB_AVAILABLE_IN_ALL
 456 gboolean g_source_is_destroyed    (GSource        *source);
 457
 458 GLIB_AVAILABLE_IN_ALL
 459 void                 g_source_set_name       (GSource        *source,
 460                                               const char     *name);
 461 GLIB_AVAILABLE_IN_ALL
 462 const char *         g_source_get_name       (GSource        *source);
 463 GLIB_AVAILABLE_IN_ALL
 464 void                 g_source_set_name_by_id (guint           tag,
 465                                               const char     *name);
 466
 467 GLIB_AVAILABLE_IN_2_36
 468 void                 g_source_set_ready_time (GSource        *source,
 469                                               gint64          ready_time);
 470 GLIB_AVAILABLE_IN_2_36
 471 gint64               g_source_get_ready_time (GSource        *source);
 472
 473 #ifdef G_OS_UNIX
 474 GLIB_AVAILABLE_IN_2_36
 475 gpointer             g_source_add_unix_fd    (GSource        *source,
 476                                               gint            fd,
 477                                               GIOCondition    events);
 478 GLIB_AVAILABLE_IN_2_36
 479 void                 g_source_modify_unix_fd (GSource        *source,
 480                                               gpointer        tag,
 481                                               GIOCondition    new_events);
 482 GLIB_AVAILABLE_IN_2_36
 483 void                 g_source_remove_unix_fd (GSource        *source,
 484                                               gpointer        tag);
 485 GLIB_AVAILABLE_IN_2_36
 486 GIOCondition         g_source_query_unix_fd  (GSource        *source,
 487                                               gpointer        tag);
 488 #endif
 489
 490 /* Used to implement g_source_connect_closure and internally*/
 491 GLIB_AVAILABLE_IN_ALL
 492 void g_source_set_callback_indirect (GSource              *source,
 493                                      gpointer              callback_data,
 494                                      GSourceCallbackFuncs *callback_funcs);
 495
 496 GLIB_AVAILABLE_IN_ALL
 497 void     g_source_add_poll            (GSource        *source,
 498                                        GPollFD        *fd);
 499 GLIB_AVAILABLE_IN_ALL
 500 void     g_source_remove_poll         (GSource        *source,
 501                                        GPollFD        *fd);
 502
 503 GLIB_AVAILABLE_IN_ALL
 504 void     g_source_add_child_source    (GSource        *source,
 505                                        GSource        *child_source);
 506 GLIB_AVAILABLE_IN_ALL
 507 void     g_source_remove_child_source (GSource        *source,
 508                                        GSource        *child_source);
 509
 510 GLIB_DEPRECATED_IN_2_28_FOR(g_source_get_time)
 511 void     g_source_get_current_time (GSource        *source,
 512                                     GTimeVal       *timeval);
 513
 514 GLIB_AVAILABLE_IN_ALL
 515 gint64   g_source_get_time         (GSource        *source);
 516
 517  /* void g_source_connect_closure (GSource        *source,
 518                                   GClosure       *closure);
 519  */
 520
 521 /* Specific source types
 522  */
 523 GLIB_AVAILABLE_IN_ALL
 524 GSource *g_idle_source_new        (void);
 525 GLIB_AVAILABLE_IN_ALL
 526 GSource *g_child_watch_source_new (GPid pid);
 527 GLIB_AVAILABLE_IN_ALL
 528 GSource *g_timeout_source_new     (guint interval);
 529 GLIB_AVAILABLE_IN_ALL
 530 GSource *g_timeout_source_new_seconds (guint interval);
 531
 532 /* Miscellaneous functions
 533  */
 534 GLIB_AVAILABLE_IN_ALL
 535 void   g_get_current_time                 (GTimeVal       *result);
 536 GLIB_AVAILABLE_IN_ALL
 537 gint64 g_get_monotonic_time               (void);
 538 GLIB_AVAILABLE_IN_ALL
 539 gint64 g_get_real_time                    (void);
 540
 541
 542 /* Source manipulation by ID */
 543 GLIB_AVAILABLE_IN_ALL
 544 gboolean g_source_remove                     (guint          tag);
 545 GLIB_AVAILABLE_IN_ALL
 546 gboolean g_source_remove_by_user_data        (gpointer       user_data);
 547 GLIB_AVAILABLE_IN_ALL
 548 gboolean g_source_remove_by_funcs_user_data  (GSourceFuncs  *funcs,
 549                                               gpointer       user_data);
 550
 551 /* Idles, child watchers and timeouts */
 552 GLIB_AVAILABLE_IN_ALL
 553 guint    g_timeout_add_full         (gint            priority,
 554                                      guint           interval,
 555                                      GSourceFunc     function,
 556                                      gpointer        data,
 557                                      GDestroyNotify  notify);
 558 GLIB_AVAILABLE_IN_ALL
 559 guint    g_timeout_add              (guint           interval,
 560                                      GSourceFunc     function,
 561                                      gpointer        data);
 562 GLIB_AVAILABLE_IN_ALL
 563 guint    g_timeout_add_seconds_full (gint            priority,
 564                                      guint           interval,
 565                                      GSourceFunc     function,
 566                                      gpointer        data,
 567                                      GDestroyNotify  notify);
 568 GLIB_AVAILABLE_IN_ALL
 569 guint    g_timeout_add_seconds      (guint           interval,
 570                                      GSourceFunc     function,
 571                                      gpointer        data);
 572 GLIB_AVAILABLE_IN_ALL
 573 guint    g_child_watch_add_full     (gint            priority,
 574                                      GPid            pid,
 575                                      GChildWatchFunc function,
 576                                      gpointer        data,
 577                                      GDestroyNotify  notify);
 578 GLIB_AVAILABLE_IN_ALL
 579 guint    g_child_watch_add          (GPid            pid,
 580                                      GChildWatchFunc function,
 581                                      gpointer        data);
 582 GLIB_AVAILABLE_IN_ALL
 583 guint    g_idle_add                 (GSourceFunc     function,
 584                                      gpointer        data);
 585 GLIB_AVAILABLE_IN_ALL
 586 guint    g_idle_add_full            (gint            priority,
 587                                      GSourceFunc     function,
 588                                      gpointer        data,
 589                                      GDestroyNotify  notify);
 590 GLIB_AVAILABLE_IN_ALL
 591 gboolean g_idle_remove_by_data      (gpointer        data);
 592
 593 GLIB_AVAILABLE_IN_ALL
 594 void     g_main_context_invoke_full (GMainContext   *context,
 595                                      gint            priority,
 596                                      GSourceFunc     function,
 597                                      gpointer        data,
 598                                      GDestroyNotify  notify);
 599 GLIB_AVAILABLE_IN_ALL
 600 void     g_main_context_invoke      (GMainContext   *context,
 601                                      GSourceFunc     function,
 602                                      gpointer        data);
 603
 604 /* Hook for GClosure / GSource integration. Don't touch */
 605 GLIB_VAR GSourceFuncs g_timeout_funcs;
 606 GLIB_VAR GSourceFuncs g_child_watch_funcs;
 607 GLIB_VAR GSourceFuncs g_idle_funcs;
 608
 609 G_END_DECLS
 610
 611 #endif /* __G_MAIN_H__ */