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 Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 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  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public License
  15  * along with this library; if not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #ifndef __G_MAIN_H__
  19 #define __G_MAIN_H__
  20
  21 #if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
  22 #error "Only <glib.h> can be included directly."
  23 #endif
  24
  25 #include <glib/gpoll.h>
  26 #include <glib/gslist.h>
  27 #include <glib/gthread.h>
  28
  29 G_BEGIN_DECLS
  30
  31 typedef enum /*< flags >*/
  32 {
  33   G_IO_IN       GLIB_SYSDEF_POLLIN,
  34   G_IO_OUT      GLIB_SYSDEF_POLLOUT,
  35   G_IO_PRI      GLIB_SYSDEF_POLLPRI,
  36   G_IO_ERR      GLIB_SYSDEF_POLLERR,
  37   G_IO_HUP      GLIB_SYSDEF_POLLHUP,
  38   G_IO_NVAL     GLIB_SYSDEF_POLLNVAL
  39 } GIOCondition;
  40
  41
  42 /**
  43  * GMainContext:
  44  *
  45  * The `GMainContext` struct is an opaque data
  46  * type representing a set of sources to be handled in a main loop.
  47  */
  48 typedef struct _GMainContext            GMainContext;
  49
  50 /**
  51  * GMainLoop:
  52  *
  53  * The `GMainLoop` struct is an opaque data type
  54  * representing the main event loop of a GLib or GTK+ application.
  55  */
  56 typedef struct _GMainLoop               GMainLoop;
  57
  58 /**
  59  * GSource:
  60  *
  61  * The `GSource` struct is an opaque data type
  62  * representing an event source.
  63  */
  64 typedef struct _GSource                 GSource;
  65 typedef struct _GSourcePrivate          GSourcePrivate;
  66
  67 /**
  68  * GSourceCallbackFuncs:
  69  * @ref: Called when a reference is added to the callback object
  70  * @unref: Called when a reference to the callback object is dropped
  71  * @get: Called to extract the callback function and data from the
  72  *     callback object.
  73  *
  74  * The `GSourceCallbackFuncs` struct contains
  75  * functions for managing callback objects.
  76  */
  77 typedef struct _GSourceCallbackFuncs    GSourceCallbackFuncs;
  78
  79 /**
  80  * GSourceFuncs:
  81  * @prepare: Called before all the file descriptors are polled. If the
  82  *     source can determine that it is ready here (without waiting for the
  83  *     results of the poll() call) it should return %TRUE. It can also return
  84  *     a @timeout_ value which should be the maximum timeout (in milliseconds)
  85  *     which should be passed to the poll() call. The actual timeout used will
  86  *     be -1 if all sources returned -1, or it will be the minimum of all
  87  *     the @timeout_ values returned which were >= 0.  Since 2.36 this may
  88  *     be %NULL, in which case the effect is as if the function always returns
  89  *     %FALSE with a timeout of -1.  If @prepare returns a
  90  *     timeout and the source also has a ready time set, then the
  91  *     lower of the two will be used.
  92  * @check: Called after all the file descriptors are polled. The source
  93  *     should return %TRUE if it is ready to be dispatched. Note that some
  94  *     time may have passed since the previous prepare function was called,
  95  *     so the source should be checked again here.  Since 2.36 this may
  96  *     be %NULL, in which case the effect is as if the function always returns
  97  *     %FALSE.
  98  * @dispatch: Called to dispatch the event source, after it has returned
  99  *     %TRUE in either its @prepare or its @check function, or if a ready time
 100  *     has been reached. The @dispatch function receives a callback function and
 101  *     user data. The callback function may be %NULL if the source was never
 102  *     connected to a callback using g_source_set_callback(). The @dispatch
 103  *     function should call the callback function with @user_data and whatever
 104  *     additional parameters are needed for this type of event source. The
 105  *     return value of the @dispatch function should be #G_SOURCE_REMOVE if the
 106  *     source should be removed or #G_SOURCE_CONTINUE to keep it.
 107  * @finalize: Called when the source is finalized. At this point, the source
 108  *     will have been destroyed, had its callback cleared, and have been removed
 109  *     from its #GMainContext, but it will still have its final reference count,
 110  *     so methods can be called on it from within this function.
 111  *
 112  * The `GSourceFuncs` struct contains a table of
 113  * functions used to handle event sources in a generic manner.
 114  *
 115  * For idle sources, the prepare and check functions always return %TRUE
 116  * to indicate that the source is always ready to be processed. The prepare
 117  * function also returns a timeout value of 0 to ensure that the poll() call
 118  * doesn't block (since that would be time wasted which could have been spent
 119  * running the idle function).
 120  *
 121  * For timeout sources, the prepare and check functions both return %TRUE
 122  * if the timeout interval has expired. The prepare function also returns
 123  * a timeout value to ensure that the poll() call doesn't block too long
 124  * and miss the next timeout.
 125  *
 126  * For file descriptor sources, the prepare function typically returns %FALSE,
 127  * since it must wait until poll() has been called before it knows whether
 128  * any events need to be processed. It sets the returned timeout to -1 to
 129  * indicate that it doesn't mind how long the poll() call blocks. In the
 130  * check function, it tests the results of the poll() call to see if the
 131  * required condition has been met, and returns %TRUE if so.
 132  */
 133 typedef struct _GSourceFuncs            GSourceFuncs;
 134
 135 /**
 136  * GPid:
 137  *
 138  * A type which is used to hold a process identification.
 139  *
 140  * On UNIX, processes are identified by a process id (an integer),
 141  * while Windows uses process handles (which are pointers).
 142  *
 143  * GPid is used in GLib only for descendant processes spawned with
 144  * the g_spawn functions.
 145  */
 146 /* defined in glibconfig.h */
 147
 148 /**
 149  * G_PID_FORMAT:
 150  *
 151  * A format specifier that can be used in printf()-style format strings
 152  * when printing a #GPid.
 153  *
 154  * Since: 2.50
 155  */
 156 /* defined in glibconfig.h */
 157
 158 /**
 159  * GSourceFunc:
 160  * @user_data: data passed to the function, set when the source was
 161  *     created with one of the above functions
 162  *
 163  * Specifies the type of function passed to g_timeout_add(),
 164  * g_timeout_add_full(), g_idle_add(), and g_idle_add_full().
 165  *
 166  * Returns: %FALSE if the source should be removed. #G_SOURCE_CONTINUE and
 167  * #G_SOURCE_REMOVE are more memorable names for the return value.
 168  */
 169 typedef gboolean (*GSourceFunc)       (gpointer user_data);
 170
 171 /**
 172  * GChildWatchFunc:
 173  * @pid: the process id of the child process
 174  * @status: Status information about the child process, encoded
 175  *     in a platform-specific manner
 176  * @user_data: user data passed to g_child_watch_add()
 177  *
 178  * Prototype of a #GChildWatchSource callback, called when a child
 179  * process has exited.  To interpret @status, see the documentation
 180  * for g_spawn_check_exit_status().
 181  */
 182 typedef void     (*GChildWatchFunc)   (GPid     pid,
 183                                        gint     status,
 184                                        gpointer user_data);
 185 struct _GSource
 186 {
 187   /*< private >*/
 188   gpointer callback_data;
 189   GSourceCallbackFuncs *callback_funcs;
 190
 191   const GSourceFuncs *source_funcs;
 192   guint ref_count;
 193
 194   GMainContext *context;
 195
 196   gint priority;
 197   guint flags;
 198   guint source_id;
 199
 200   GSList *poll_fds;
 201
 202   GSource *prev;
 203   GSource *next;
 204
 205   char    *name;
 206
 207   GSourcePrivate *priv;
 208 };
 209
 210 struct _GSourceCallbackFuncs
 211 {
 212   void (*ref)   (gpointer     cb_data);
 213   void (*unref) (gpointer     cb_data);
 214   void (*get)   (gpointer     cb_data,
 215                  GSource     *source,
 216                  GSourceFunc *func,
 217                  gpointer    *data);
 218 };
 219
 220 /**
 221  * GSourceDummyMarshal:
 222  *
 223  * This is just a placeholder for #GClosureMarshal,
 224  * which cannot be used here for dependency reasons.
 225  */
 226 typedef void (*GSourceDummyMarshal) (void);
 227
 228 struct _GSourceFuncs
 229 {
 230   gboolean (*prepare)  (GSource    *source,
 231                         gint       *timeout_);
 232   gboolean (*check)    (GSource    *source);
 233   gboolean (*dispatch) (GSource    *source,
 234                         GSourceFunc callback,
 235                         gpointer    user_data);
 236   void     (*finalize) (GSource    *source); /* Can be NULL */
 237
 238   /*< private >*/
 239   /* For use by g_source_set_closure */
 240   GSourceFunc     closure_callback;
 241   GSourceDummyMarshal closure_marshal; /* Really is of type GClosureMarshal */
 242 };
 243
 244 /* Standard priorities */
 245
 246 /**
 247  * G_PRIORITY_HIGH:
 248  *
 249  * Use this for high priority event sources.
 250  *
 251  * It is not used within GLib or GTK+.
 252  */
 253 #define G_PRIORITY_HIGH            -100
 254
 255 /**
 256  * G_PRIORITY_DEFAULT:
 257  *
 258  * Use this for default priority event sources.
 259  *
 260  * In GLib this priority is used when adding timeout functions
 261  * with g_timeout_add(). In GDK this priority is used for events
 262  * from the X server.
 263  */
 264 #define G_PRIORITY_DEFAULT          0
 265
 266 /**
 267  * G_PRIORITY_HIGH_IDLE:
 268  *
 269  * Use this for high priority idle functions.
 270  *
 271  * GTK+ uses #G_PRIORITY_HIGH_IDLE + 10 for resizing operations,
 272  * and #G_PRIORITY_HIGH_IDLE + 20 for redrawing operations. (This is
 273  * done to ensure that any pending resizes are processed before any
 274  * pending redraws, so that widgets are not redrawn twice unnecessarily.)
 275  */
 276 #define G_PRIORITY_HIGH_IDLE        100
 277
 278 /**
 279  * G_PRIORITY_DEFAULT_IDLE:
 280  *
 281  * Use this for default priority idle functions.
 282  *
 283  * In GLib this priority is used when adding idle functions with
 284  * g_idle_add().
 285  */
 286 #define G_PRIORITY_DEFAULT_IDLE     200
 287
 288 /**
 289  * G_PRIORITY_LOW:
 290  *
 291  * Use this for very low priority background tasks.
 292  *
 293  * It is not used within GLib or GTK+.
 294  */
 295 #define G_PRIORITY_LOW              300
 296
 297 /**
 298  * G_SOURCE_REMOVE:
 299  *
 300  * Use this macro as the return value of a #GSourceFunc to remove
 301  * the #GSource from the main loop.
 302  *
 303  * Since: 2.32
 304  */
 305 #define G_SOURCE_REMOVE         FALSE
 306
 307 /**
 308  * G_SOURCE_CONTINUE:
 309  *
 310  * Use this macro as the return value of a #GSourceFunc to leave
 311  * the #GSource in the main loop.
 312  *
 313  * Since: 2.32
 314  */
 315 #define G_SOURCE_CONTINUE       TRUE
 316
 317 /* GMainContext: */
 318
 319 GLIB_AVAILABLE_IN_ALL
 320 GMainContext *g_main_context_new       (void);
 321 GLIB_AVAILABLE_IN_ALL
 322 GMainContext *g_main_context_ref       (GMainContext *context);
 323 GLIB_AVAILABLE_IN_ALL
 324 void          g_main_context_unref     (GMainContext *context);
 325 GLIB_AVAILABLE_IN_ALL
 326 GMainContext *g_main_context_default   (void);
 327
 328 GLIB_AVAILABLE_IN_ALL
 329 gboolean      g_main_context_iteration (GMainContext *context,
 330                                         gboolean      may_block);
 331 GLIB_AVAILABLE_IN_ALL
 332 gboolean      g_main_context_pending   (GMainContext *context);
 333
 334 /* For implementation of legacy interfaces
 335  */
 336 GLIB_AVAILABLE_IN_ALL
 337 GSource      *g_main_context_find_source_by_id              (GMainContext *context,
 338                                                              guint         source_id);
 339 GLIB_AVAILABLE_IN_ALL
 340 GSource      *g_main_context_find_source_by_user_data       (GMainContext *context,
 341                                                              gpointer      user_data);
 342 GLIB_AVAILABLE_IN_ALL
 343 GSource      *g_main_context_find_source_by_funcs_user_data (GMainContext *context,
 344                                                              GSourceFuncs *funcs,
 345                                                              gpointer      user_data);
 346
 347 /* Low level functions for implementing custom main loops.
 348  */
 349 GLIB_AVAILABLE_IN_ALL
 350 void     g_main_context_wakeup  (GMainContext *context);
 351 GLIB_AVAILABLE_IN_ALL
 352 gboolean g_main_context_acquire (GMainContext *context);
 353 GLIB_AVAILABLE_IN_ALL
 354 void     g_main_context_release (GMainContext *context);
 355 GLIB_AVAILABLE_IN_ALL
 356 gboolean g_main_context_is_owner (GMainContext *context);
 357 GLIB_AVAILABLE_IN_ALL
 358 gboolean g_main_context_wait    (GMainContext *context,
 359                                  GCond        *cond,
 360                                  GMutex       *mutex);
 361
 362 GLIB_AVAILABLE_IN_ALL
 363 gboolean g_main_context_prepare  (GMainContext *context,
 364                                   gint         *priority);
 365 GLIB_AVAILABLE_IN_ALL
 366 gint     g_main_context_query    (GMainContext *context,
 367                                   gint          max_priority,
 368                                   gint         *timeout_,
 369                                   GPollFD      *fds,
 370                                   gint          n_fds);
 371 GLIB_AVAILABLE_IN_ALL
 372 gboolean     g_main_context_check    (GMainContext *context,
 373                                       gint          max_priority,
 374                                       GPollFD      *fds,
 375                                       gint          n_fds);
 376 GLIB_AVAILABLE_IN_ALL
 377 void     g_main_context_dispatch (GMainContext *context);
 378
 379 GLIB_AVAILABLE_IN_ALL
 380 void     g_main_context_set_poll_func (GMainContext *context,
 381                                        GPollFunc     func);
 382 GLIB_AVAILABLE_IN_ALL
 383 GPollFunc g_main_context_get_poll_func (GMainContext *context);
 384
 385 /* Low level functions for use by source implementations
 386  */
 387 GLIB_AVAILABLE_IN_ALL
 388 void     g_main_context_add_poll    (GMainContext *context,
 389                                      GPollFD      *fd,
 390                                      gint          priority);
 391 GLIB_AVAILABLE_IN_ALL
 392 void     g_main_context_remove_poll (GMainContext *context,
 393                                      GPollFD      *fd);
 394
 395 GLIB_AVAILABLE_IN_ALL
 396 gint     g_main_depth               (void);
 397 GLIB_AVAILABLE_IN_ALL
 398 GSource *g_main_current_source      (void);
 399
 400 /* GMainContexts for other threads
 401  */
 402 GLIB_AVAILABLE_IN_ALL
 403 void          g_main_context_push_thread_default (GMainContext *context);
 404 GLIB_AVAILABLE_IN_ALL
 405 void          g_main_context_pop_thread_default  (GMainContext *context);
 406 GLIB_AVAILABLE_IN_ALL
 407 GMainContext *g_main_context_get_thread_default  (void);
 408 GLIB_AVAILABLE_IN_ALL
 409 GMainContext *g_main_context_ref_thread_default  (void);
 410
 411 /* GMainLoop: */
 412
 413 GLIB_AVAILABLE_IN_ALL
 414 GMainLoop *g_main_loop_new        (GMainContext *context,
 415                                    gboolean      is_running);
 416 GLIB_AVAILABLE_IN_ALL
 417 void       g_main_loop_run        (GMainLoop    *loop);
 418 GLIB_AVAILABLE_IN_ALL
 419 void       g_main_loop_quit       (GMainLoop    *loop);
 420 GLIB_AVAILABLE_IN_ALL
 421 GMainLoop *g_main_loop_ref        (GMainLoop    *loop);
 422 GLIB_AVAILABLE_IN_ALL
 423 void       g_main_loop_unref      (GMainLoop    *loop);
 424 GLIB_AVAILABLE_IN_ALL
 425 gboolean   g_main_loop_is_running (GMainLoop    *loop);
 426 GLIB_AVAILABLE_IN_ALL
 427 GMainContext *g_main_loop_get_context (GMainLoop    *loop);
 428
 429 /* GSource: */
 430
 431 GLIB_AVAILABLE_IN_ALL
 432 GSource *g_source_new             (GSourceFuncs   *source_funcs,
 433                                    guint           struct_size);
 434 GLIB_AVAILABLE_IN_ALL
 435 GSource *g_source_ref             (GSource        *source);
 436 GLIB_AVAILABLE_IN_ALL
 437 void     g_source_unref           (GSource        *source);
 438
 439 GLIB_AVAILABLE_IN_ALL
 440 guint    g_source_attach          (GSource        *source,
 441                                    GMainContext   *context);
 442 GLIB_AVAILABLE_IN_ALL
 443 void     g_source_destroy         (GSource        *source);
 444
 445 GLIB_AVAILABLE_IN_ALL
 446 void     g_source_set_priority    (GSource        *source,
 447                                    gint            priority);
 448 GLIB_AVAILABLE_IN_ALL
 449 gint     g_source_get_priority    (GSource        *source);
 450 GLIB_AVAILABLE_IN_ALL
 451 void     g_source_set_can_recurse (GSource        *source,
 452                                    gboolean        can_recurse);
 453 GLIB_AVAILABLE_IN_ALL
 454 gboolean g_source_get_can_recurse (GSource        *source);
 455 GLIB_AVAILABLE_IN_ALL
 456 guint    g_source_get_id          (GSource        *source);
 457
 458 GLIB_AVAILABLE_IN_ALL
 459 GMainContext *g_source_get_context (GSource       *source);
 460
 461 GLIB_AVAILABLE_IN_ALL
 462 void     g_source_set_callback    (GSource        *source,
 463                                    GSourceFunc     func,
 464                                    gpointer        data,
 465                                    GDestroyNotify  notify);
 466
 467 GLIB_AVAILABLE_IN_ALL
 468 void     g_source_set_funcs       (GSource        *source,
 469                                    GSourceFuncs   *funcs);
 470 GLIB_AVAILABLE_IN_ALL
 471 gboolean g_source_is_destroyed    (GSource        *source);
 472
 473 GLIB_AVAILABLE_IN_ALL
 474 void                 g_source_set_name       (GSource        *source,
 475                                               const char     *name);
 476 GLIB_AVAILABLE_IN_ALL
 477 const char *         g_source_get_name       (GSource        *source);
 478 GLIB_AVAILABLE_IN_ALL
 479 void                 g_source_set_name_by_id (guint           tag,
 480                                               const char     *name);
 481
 482 GLIB_AVAILABLE_IN_2_36
 483 void                 g_source_set_ready_time (GSource        *source,
 484                                               gint64          ready_time);
 485 GLIB_AVAILABLE_IN_2_36
 486 gint64               g_source_get_ready_time (GSource        *source);
 487
 488 #ifdef G_OS_UNIX
 489 GLIB_AVAILABLE_IN_2_36
 490 gpointer             g_source_add_unix_fd    (GSource        *source,
 491                                               gint            fd,
 492                                               GIOCondition    events);
 493 GLIB_AVAILABLE_IN_2_36
 494 void                 g_source_modify_unix_fd (GSource        *source,
 495                                               gpointer        tag,
 496                                               GIOCondition    new_events);
 497 GLIB_AVAILABLE_IN_2_36
 498 void                 g_source_remove_unix_fd (GSource        *source,
 499                                               gpointer        tag);
 500 GLIB_AVAILABLE_IN_2_36
 501 GIOCondition         g_source_query_unix_fd  (GSource        *source,
 502                                               gpointer        tag);
 503 #endif
 504
 505 /* Used to implement g_source_connect_closure and internally*/
 506 GLIB_AVAILABLE_IN_ALL
 507 void g_source_set_callback_indirect (GSource              *source,
 508                                      gpointer              callback_data,
 509                                      GSourceCallbackFuncs *callback_funcs);
 510
 511 GLIB_AVAILABLE_IN_ALL
 512 void     g_source_add_poll            (GSource        *source,
 513                                        GPollFD        *fd);
 514 GLIB_AVAILABLE_IN_ALL
 515 void     g_source_remove_poll         (GSource        *source,
 516                                        GPollFD        *fd);
 517
 518 GLIB_AVAILABLE_IN_ALL
 519 void     g_source_add_child_source    (GSource        *source,
 520                                        GSource        *child_source);
 521 GLIB_AVAILABLE_IN_ALL
 522 void     g_source_remove_child_source (GSource        *source,
 523                                        GSource        *child_source);
 524
 525 GLIB_DEPRECATED_IN_2_28_FOR(g_source_get_time)
 526 void     g_source_get_current_time (GSource        *source,
 527                                     GTimeVal       *timeval);
 528
 529 GLIB_AVAILABLE_IN_ALL
 530 gint64   g_source_get_time         (GSource        *source);
 531
 532  /* void g_source_connect_closure (GSource        *source,
 533                                   GClosure       *closure);
 534  */
 535
 536 /* Specific source types
 537  */
 538 GLIB_AVAILABLE_IN_ALL
 539 GSource *g_idle_source_new        (void);
 540 GLIB_AVAILABLE_IN_ALL
 541 GSource *g_child_watch_source_new (GPid pid);
 542 GLIB_AVAILABLE_IN_ALL
 543 GSource *g_timeout_source_new     (guint interval);
 544 GLIB_AVAILABLE_IN_ALL
 545 GSource *g_timeout_source_new_seconds (guint interval);
 546
 547 /* Miscellaneous functions
 548  */
 549 GLIB_AVAILABLE_IN_ALL
 550 void   g_get_current_time                 (GTimeVal       *result);
 551 GLIB_AVAILABLE_IN_ALL
 552 gint64 g_get_monotonic_time               (void);
 553 GLIB_AVAILABLE_IN_ALL
 554 gint64 g_get_real_time                    (void);
 555
 556
 557 /* Source manipulation by ID */
 558 GLIB_AVAILABLE_IN_ALL
 559 gboolean g_source_remove                     (guint          tag);
 560 GLIB_AVAILABLE_IN_ALL
 561 gboolean g_source_remove_by_user_data        (gpointer       user_data);
 562 GLIB_AVAILABLE_IN_ALL
 563 gboolean g_source_remove_by_funcs_user_data  (GSourceFuncs  *funcs,
 564                                               gpointer       user_data);
 565
 566 /**
 567  * GClearHandleFunc:
 568  * @handle_id: the handle ID to clear
 569  *
 570  * Specifies the type of function passed to g_clear_handle_id().
 571  * The implementation is expected to free the resource identified
 572  * by @handle_id; for instance, if @handle_id is a #GSource ID,
 573  * g_source_remove() can be used.
 574  *
 575  * Since: 2.56
 576  */
 577 typedef void (* GClearHandleFunc) (guint handle_id);
 578
 579 GLIB_AVAILABLE_IN_2_56
 580 void    g_clear_handle_id (guint           *tag_ptr,
 581                            GClearHandleFunc clear_func);
 582
 583 #define g_clear_handle_id(tag_ptr, clear_func)             \
 584   G_STMT_START {                                           \
 585     G_STATIC_ASSERT (sizeof *(tag_ptr) == sizeof (guint)); \
 586     guint *_tag_ptr = (guint *) (tag_ptr);                 \
 587     guint _handle_id;                                      \
 588                                                            \
 589     _handle_id = *_tag_ptr;                                \
 590     if (_handle_id > 0)                                    \
 591       {                                                    \
 592         *_tag_ptr = 0;                                     \
 593         if (clear_func != NULL)                            \
 594           clear_func (_handle_id);                         \
 595       }                                                    \
 596   } G_STMT_END
 597
 598 /* Idles, child watchers and timeouts */
 599 GLIB_AVAILABLE_IN_ALL
 600 guint    g_timeout_add_full         (gint            priority,
 601                                      guint           interval,
 602                                      GSourceFunc     function,
 603                                      gpointer        data,
 604                                      GDestroyNotify  notify);
 605 GLIB_AVAILABLE_IN_ALL
 606 guint    g_timeout_add              (guint           interval,
 607                                      GSourceFunc     function,
 608                                      gpointer        data);
 609 GLIB_AVAILABLE_IN_ALL
 610 guint    g_timeout_add_seconds_full (gint            priority,
 611                                      guint           interval,
 612                                      GSourceFunc     function,
 613                                      gpointer        data,
 614                                      GDestroyNotify  notify);
 615 GLIB_AVAILABLE_IN_ALL
 616 guint    g_timeout_add_seconds      (guint           interval,
 617                                      GSourceFunc     function,
 618                                      gpointer        data);
 619 GLIB_AVAILABLE_IN_ALL
 620 guint    g_child_watch_add_full     (gint            priority,
 621                                      GPid            pid,
 622                                      GChildWatchFunc function,
 623                                      gpointer        data,
 624                                      GDestroyNotify  notify);
 625 GLIB_AVAILABLE_IN_ALL
 626 guint    g_child_watch_add          (GPid            pid,
 627                                      GChildWatchFunc function,
 628                                      gpointer        data);
 629 GLIB_AVAILABLE_IN_ALL
 630 guint    g_idle_add                 (GSourceFunc     function,
 631                                      gpointer        data);
 632 GLIB_AVAILABLE_IN_ALL
 633 guint    g_idle_add_full            (gint            priority,
 634                                      GSourceFunc     function,
 635                                      gpointer        data,
 636                                      GDestroyNotify  notify);
 637 GLIB_AVAILABLE_IN_ALL
 638 gboolean g_idle_remove_by_data      (gpointer        data);
 639
 640 GLIB_AVAILABLE_IN_ALL
 641 void     g_main_context_invoke_full (GMainContext   *context,
 642                                      gint            priority,
 643                                      GSourceFunc     function,
 644                                      gpointer        data,
 645                                      GDestroyNotify  notify);
 646 GLIB_AVAILABLE_IN_ALL
 647 void     g_main_context_invoke      (GMainContext   *context,
 648                                      GSourceFunc     function,
 649                                      gpointer        data);
 650
 651 /* Hook for GClosure / GSource integration. Don't touch */
 652 GLIB_VAR GSourceFuncs g_timeout_funcs;
 653 GLIB_VAR GSourceFuncs g_child_watch_funcs;
 654 GLIB_VAR GSourceFuncs g_idle_funcs;
 655 #ifdef G_OS_UNIX
 656 GLIB_VAR GSourceFuncs g_unix_signal_funcs;
 657 GLIB_VAR GSourceFuncs g_unix_fd_source_funcs;
 658 #endif
 659
 660 G_END_DECLS
 661
 662 #endif /* __G_MAIN_H__ */