gio/giotypes.h

   1 /* GIO - GLib Input, Output and Streaming Library
   2  *
   3  * Copyright (C) 2006-2007 Red Hat, Inc.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General
  16  * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * Author: Alexander Larsson <alexl@redhat.com>
  19  */
  20
  21 #ifndef __GIO_TYPES_H__
  22 #define __GIO_TYPES_H__
  23
  24 #if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
  25 #error "Only <gio/gio.h> can be included directly."
  26 #endif
  27
  28 #include <gio/gioenums.h>
  29
  30 G_BEGIN_DECLS
  31
  32 typedef struct _GAppLaunchContext             GAppLaunchContext;
  33 typedef struct _GAppInfo                      GAppInfo; /* Dummy typedef */
  34 typedef struct _GAsyncResult                  GAsyncResult; /* Dummy typedef */
  35 typedef struct _GAsyncInitable                GAsyncInitable;
  36 typedef struct _GBufferedInputStream          GBufferedInputStream;
  37 typedef struct _GBufferedOutputStream         GBufferedOutputStream;
  38 typedef struct _GCancellable                  GCancellable;
  39 typedef struct _GCharsetConverter             GCharsetConverter;
  40 typedef struct _GConverter                    GConverter;
  41 typedef struct _GConverterInputStream         GConverterInputStream;
  42 typedef struct _GConverterOutputStream        GConverterOutputStream;
  43 typedef struct _GDatagramBased                GDatagramBased;
  44 typedef struct _GDataInputStream              GDataInputStream;
  45 typedef struct _GSimplePermission             GSimplePermission;
  46 typedef struct _GZlibCompressor               GZlibCompressor;
  47 typedef struct _GZlibDecompressor             GZlibDecompressor;
  48
  49 typedef struct _GSimpleActionGroup            GSimpleActionGroup;
  50 typedef struct _GRemoteActionGroup            GRemoteActionGroup;
  51 typedef struct _GDBusActionGroup              GDBusActionGroup;
  52 typedef struct _GActionMap                    GActionMap;
  53 typedef struct _GActionGroup                  GActionGroup;
  54 typedef struct _GPropertyAction               GPropertyAction;
  55 typedef struct _GSimpleAction                 GSimpleAction;
  56 typedef struct _GAction                       GAction;
  57 typedef struct _GApplication                  GApplication;
  58 typedef struct _GApplicationCommandLine       GApplicationCommandLine;
  59 typedef struct _GSettingsBackend              GSettingsBackend;
  60 typedef struct _GSettings                     GSettings;
  61 typedef struct _GPermission                   GPermission;
  62
  63 typedef struct _GMenuModel                    GMenuModel;
  64 typedef struct _GNotification                 GNotification;
  65
  66 /**
  67  * GDrive:
  68  *
  69  * Opaque drive object.
  70  **/
  71 typedef struct _GDrive                        GDrive; /* Dummy typedef */
  72 typedef struct _GFileEnumerator               GFileEnumerator;
  73 typedef struct _GFileMonitor                  GFileMonitor;
  74 typedef struct _GFilterInputStream            GFilterInputStream;
  75 typedef struct _GFilterOutputStream           GFilterOutputStream;
  76
  77 /**
  78  * GFile:
  79  *
  80  * A handle to an object implementing the #GFileIface interface.
  81  * Generally stores a location within the file system. Handles do not
  82  * necessarily represent files or directories that currently exist.
  83  **/
  84 typedef struct _GFile                         GFile; /* Dummy typedef */
  85 typedef struct _GFileInfo                     GFileInfo;
  86
  87 /**
  88  * GFileAttributeMatcher:
  89  *
  90  * Determines if a string matches a file attribute.
  91  **/
  92 typedef struct _GFileAttributeMatcher         GFileAttributeMatcher;
  93 typedef struct _GFileAttributeInfo            GFileAttributeInfo;
  94 typedef struct _GFileAttributeInfoList        GFileAttributeInfoList;
  95 typedef struct _GFileDescriptorBased          GFileDescriptorBased;
  96 typedef struct _GFileInputStream              GFileInputStream;
  97 typedef struct _GFileOutputStream             GFileOutputStream;
  98 typedef struct _GFileIOStream                 GFileIOStream;
  99 typedef struct _GFileIcon                     GFileIcon;
 100 typedef struct _GFilenameCompleter            GFilenameCompleter;
 101
 102
 103 typedef struct _GIcon                         GIcon; /* Dummy typedef */
 104 typedef struct _GInetAddress                  GInetAddress;
 105 typedef struct _GInetAddressMask              GInetAddressMask;
 106 typedef struct _GInetSocketAddress            GInetSocketAddress;
 107 typedef struct _GNativeSocketAddress          GNativeSocketAddress;
 108 typedef struct _GInputStream                  GInputStream;
 109 typedef struct _GInitable                     GInitable;
 110 typedef struct _GIOModule                     GIOModule;
 111 typedef struct _GIOExtensionPoint             GIOExtensionPoint;
 112 typedef struct _GIOExtension                  GIOExtension;
 113
 114 /**
 115  * GIOSchedulerJob:
 116  *
 117  * Opaque class for defining and scheduling IO jobs.
 118  **/
 119 typedef struct _GIOSchedulerJob               GIOSchedulerJob;
 120 typedef struct _GIOStreamAdapter              GIOStreamAdapter;
 121 typedef struct _GLoadableIcon                 GLoadableIcon; /* Dummy typedef */
 122 typedef struct _GBytesIcon                    GBytesIcon;
 123 typedef struct _GMemoryInputStream            GMemoryInputStream;
 124 typedef struct _GMemoryOutputStream           GMemoryOutputStream;
 125
 126 /**
 127  * GMount:
 128  *
 129  * A handle to an object implementing the #GMountIface interface.
 130  **/
 131 typedef struct _GMount                        GMount; /* Dummy typedef */
 132 typedef struct _GMountOperation               GMountOperation;
 133 typedef struct _GNetworkAddress               GNetworkAddress;
 134 typedef struct _GNetworkMonitor               GNetworkMonitor;
 135 typedef struct _GNetworkService               GNetworkService;
 136 typedef struct _GOutputStream                 GOutputStream;
 137 typedef struct _GIOStream                     GIOStream;
 138 typedef struct _GSimpleIOStream               GSimpleIOStream;
 139 typedef struct _GPollableInputStream          GPollableInputStream; /* Dummy typedef */
 140 typedef struct _GPollableOutputStream         GPollableOutputStream; /* Dummy typedef */
 141 typedef struct _GResolver                     GResolver;
 142
 143 /**
 144  * GResource:
 145  *
 146  * A resource bundle.
 147  *
 148  * Since: 2.32
 149  */
 150 typedef struct _GResource                     GResource;
 151 typedef struct _GSeekable                     GSeekable;
 152 typedef struct _GSimpleAsyncResult            GSimpleAsyncResult;
 153
 154 /**
 155  * GSocket:
 156  *
 157  * A lowlevel network socket object.
 158  *
 159  * Since: 2.22
 160  **/
 161 typedef struct _GSocket                       GSocket;
 162
 163 /**
 164  * GSocketControlMessage:
 165  *
 166  * Base class for socket-type specific control messages that can be sent and
 167  * received over #GSocket.
 168  **/
 169 typedef struct _GSocketControlMessage         GSocketControlMessage;
 170 /**
 171  * GSocketClient:
 172  *
 173  * A helper class for network clients to make connections.
 174  *
 175  * Since: 2.22
 176  **/
 177 typedef struct _GSocketClient                               GSocketClient;
 178 /**
 179  * GSocketConnection:
 180  *
 181  * A socket connection GIOStream object for connection-oriented sockets.
 182  *
 183  * Since: 2.22
 184  **/
 185 typedef struct _GSocketConnection                           GSocketConnection;
 186 /**
 187  * GSocketListener:
 188  *
 189  * A helper class for network servers to listen for and accept connections.
 190  *
 191  * Since: 2.22
 192  **/
 193 typedef struct _GSocketListener                             GSocketListener;
 194 /**
 195  * GSocketService:
 196  *
 197  * A helper class for handling accepting incomming connections in the
 198  * glib mainloop.
 199  *
 200  * Since: 2.22
 201  **/
 202 typedef struct _GSocketService                              GSocketService;
 203 typedef struct _GSocketAddress                GSocketAddress;
 204 typedef struct _GSocketAddressEnumerator      GSocketAddressEnumerator;
 205 typedef struct _GSocketConnectable            GSocketConnectable;
 206 typedef struct _GSrvTarget                    GSrvTarget;
 207 typedef struct _GTask                         GTask;
 208 /**
 209  * GTcpConnection:
 210  *
 211  * A #GSocketConnection for TCP/IP connections.
 212  *
 213  * Since: 2.22
 214  **/
 215 typedef struct _GTcpConnection                              GTcpConnection;
 216 typedef struct _GTcpWrapperConnection                       GTcpWrapperConnection;
 217 /**
 218  * GThreadedSocketService:
 219  *
 220  * A helper class for handling accepting incoming connections in the
 221  * glib mainloop and handling them in a thread.
 222  *
 223  * Since: 2.22
 224  **/
 225 typedef struct _GThreadedSocketService                      GThreadedSocketService;
 226 typedef struct _GDtlsConnection               GDtlsConnection;
 227 typedef struct _GDtlsClientConnection         GDtlsClientConnection; /* Dummy typedef */
 228 typedef struct _GDtlsServerConnection         GDtlsServerConnection; /* Dummy typedef */
 229 typedef struct _GThemedIcon                   GThemedIcon;
 230 typedef struct _GTlsCertificate               GTlsCertificate;
 231 typedef struct _GTlsClientConnection          GTlsClientConnection; /* Dummy typedef */
 232 typedef struct _GTlsConnection                GTlsConnection;
 233 typedef struct _GTlsDatabase                  GTlsDatabase;
 234 typedef struct _GTlsFileDatabase              GTlsFileDatabase;
 235 typedef struct _GTlsInteraction               GTlsInteraction;
 236 typedef struct _GTlsPassword                  GTlsPassword;
 237 typedef struct _GTlsServerConnection          GTlsServerConnection; /* Dummy typedef */
 238 typedef struct _GVfs                          GVfs; /* Dummy typedef */
 239
 240 /**
 241  * GProxyResolver:
 242  *
 243  * A helper class to enumerate proxies base on URI.
 244  *
 245  * Since: 2.26
 246  **/
 247 typedef struct _GProxyResolver                GProxyResolver;
 248 typedef struct _GProxy                        GProxy;
 249 typedef struct _GProxyAddress                 GProxyAddress;
 250 typedef struct _GProxyAddressEnumerator       GProxyAddressEnumerator;
 251
 252 /**
 253  * GVolume:
 254  *
 255  * Opaque mountable volume object.
 256  **/
 257 typedef struct _GVolume                       GVolume; /* Dummy typedef */
 258 typedef struct _GVolumeMonitor                GVolumeMonitor;
 259
 260 /**
 261  * GAsyncReadyCallback:
 262  * @source_object: (nullable): the object the asynchronous operation was started with.
 263  * @res: a #GAsyncResult.
 264  * @user_data: user data passed to the callback.
 265  *
 266  * Type definition for a function that will be called back when an asynchronous
 267  * operation within GIO has been completed. #GAsyncReadyCallback
 268  * callbacks from #GTask are guaranteed to be invoked in a later
 269  * iteration of the
 270  * [thread-default main context][g-main-context-push-thread-default]
 271  * where the #GTask was created. All other users of
 272  * #GAsyncReadyCallback must likewise call it asynchronously in a
 273  * later iteration of the main context.
 274  **/
 275 typedef void (*GAsyncReadyCallback) (GObject *source_object,
 276                                      GAsyncResult *res,
 277                                      gpointer user_data);
 278
 279 /**
 280  * GFileProgressCallback:
 281  * @current_num_bytes: the current number of bytes in the operation.
 282  * @total_num_bytes: the total number of bytes in the operation.
 283  * @user_data: user data passed to the callback.
 284  *
 285  * When doing file operations that may take a while, such as moving
 286  * a file or copying a file, a progress callback is used to pass how
 287  * far along that operation is to the application.
 288  **/
 289 typedef void (*GFileProgressCallback) (goffset current_num_bytes,
 290                                        goffset total_num_bytes,
 291                                        gpointer user_data);
 292
 293 /**
 294  * GFileReadMoreCallback:
 295  * @file_contents: the data as currently read.
 296  * @file_size: the size of the data currently read.
 297  * @callback_data: (closure): data passed to the callback.
 298  *
 299  * When loading the partial contents of a file with g_file_load_partial_contents_async(),
 300  * it may become necessary to determine if any more data from the file should be loaded.
 301  * A #GFileReadMoreCallback function facilitates this by returning %TRUE if more data
 302  * should be read, or %FALSE otherwise.
 303  *
 304  * Returns: %TRUE if more data should be read back. %FALSE otherwise.
 305  **/
 306 typedef gboolean (* GFileReadMoreCallback) (const char *file_contents,
 307                                             goffset file_size,
 308                                             gpointer callback_data);
 309
 310 /**
 311  * GFileMeasureProgressCallback:
 312  * @reporting: %TRUE if more reports will come
 313  * @current_size: the current cumulative size measurement
 314  * @num_dirs: the number of directories visited so far
 315  * @num_files: the number of non-directory files encountered
 316  * @user_data: the data passed to the original request for this callback
 317  *
 318  * This callback type is used by g_file_measure_disk_usage() to make
 319  * periodic progress reports when measuring the amount of disk spaced
 320  * used by a directory.
 321  *
 322  * These calls are made on a best-effort basis and not all types of
 323  * #GFile will support them.  At the minimum, however, one call will
 324  * always be made immediately.
 325  *
 326  * In the case that there is no support, @reporting will be set to
 327  * %FALSE (and the other values undefined) and no further calls will be
 328  * made.  Otherwise, the @reporting will be %TRUE and the other values
 329  * all-zeros during the first (immediate) call.  In this way, you can
 330  * know which type of progress UI to show without a delay.
 331  *
 332  * For g_file_measure_disk_usage() the callback is made directly.  For
 333  * g_file_measure_disk_usage_async() the callback is made via the
 334  * default main context of the calling thread (ie: the same way that the
 335  * final async result would be reported).
 336  *
 337  * @current_size is in the same units as requested by the operation (see
 338  * %G_FILE_DISK_USAGE_APPARENT_SIZE).
 339  *
 340  * The frequency of the updates is implementation defined, but is
 341  * ideally about once every 200ms.
 342  *
 343  * The last progress callback may or may not be equal to the final
 344  * result.  Always check the async result to get the final value.
 345  *
 346  * Since: 2.38
 347  **/
 348 typedef void (* GFileMeasureProgressCallback) (gboolean reporting,
 349                                                guint64  current_size,
 350                                                guint64  num_dirs,
 351                                                guint64  num_files,
 352                                                gpointer user_data);
 353
 354 /**
 355  * GIOSchedulerJobFunc:
 356  * @job: a #GIOSchedulerJob.
 357  * @cancellable: optional #GCancellable object, %NULL to ignore.
 358  * @user_data: the data to pass to callback function
 359  *
 360  * I/O Job function.
 361  *
 362  * Long-running jobs should periodically check the @cancellable
 363  * to see if they have been cancelled.
 364  *
 365  * Returns: %TRUE if this function should be called again to
 366  *    complete the job, %FALSE if the job is complete (or cancelled)
 367  **/
 368 typedef gboolean (*GIOSchedulerJobFunc) (GIOSchedulerJob *job,
 369                                          GCancellable    *cancellable,
 370                                          gpointer         user_data);
 371
 372 /**
 373  * GSimpleAsyncThreadFunc:
 374  * @res: a #GSimpleAsyncResult.
 375  * @object: a #GObject.
 376  * @cancellable: optional #GCancellable object, %NULL to ignore.
 377  *
 378  * Simple thread function that runs an asynchronous operation and
 379  * checks for cancellation.
 380  **/
 381 typedef void (*GSimpleAsyncThreadFunc) (GSimpleAsyncResult *res,
 382                                         GObject *object,
 383                                         GCancellable *cancellable);
 384
 385 /**
 386  * GSocketSourceFunc:
 387  * @socket: the #GSocket
 388  * @condition: the current condition at the source fired.
 389  * @user_data: data passed in by the user.
 390  *
 391  * This is the function type of the callback used for the #GSource
 392  * returned by g_socket_create_source().
 393  *
 394  * Returns: it should return %FALSE if the source should be removed.
 395  *
 396  * Since: 2.22
 397  */
 398 typedef gboolean (*GSocketSourceFunc) (GSocket *socket,
 399                                        GIOCondition condition,
 400                                        gpointer user_data);
 401
 402 /**
 403  * GDatagramBasedSourceFunc:
 404  * @datagram_based: the #GDatagramBased
 405  * @condition: the current condition at the source fired
 406  * @user_data: data passed in by the user
 407  *
 408  * This is the function type of the callback used for the #GSource
 409  * returned by g_datagram_based_create_source().
 410  *
 411  * Returns: %G_SOURCE_REMOVE if the source should be removed,
 412  *   %G_SOURCE_CONTINUE otherwise
 413  *
 414  * Since: 2.48
 415  */
 416 typedef gboolean (*GDatagramBasedSourceFunc) (GDatagramBased *datagram_based,
 417                                               GIOCondition    condition,
 418                                               gpointer        user_data);
 419
 420 /**
 421  * GInputVector:
 422  * @buffer: Pointer to a buffer where data will be written.
 423  * @size: the available size in @buffer.
 424  *
 425  * Structure used for scatter/gather data input.
 426  * You generally pass in an array of #GInputVectors
 427  * and the operation will store the read data starting in the
 428  * first buffer, switching to the next as needed.
 429  *
 430  * Since: 2.22
 431  */
 432 typedef struct _GInputVector GInputVector;
 433
 434 struct _GInputVector {
 435   gpointer buffer;
 436   gsize size;
 437 };
 438
 439 /**
 440  * GInputMessage:
 441  * @address: (optional) (out) (transfer full): return location
 442  *   for a #GSocketAddress, or %NULL
 443  * @vectors: (array length=num_vectors) (out): pointer to an
 444  *   array of input vectors
 445  * @num_vectors: the number of input vectors pointed to by @vectors
 446  * @bytes_received: (out): will be set to the number of bytes that have been
 447  *   received
 448  * @flags: (out): collection of #GSocketMsgFlags for the received message,
 449  *   outputted by the call
 450  * @control_messages: (array length=num_control_messages) (optional)
 451  *   (out) (transfer full): return location for a
 452  *   caller-allocated array of #GSocketControlMessages, or %NULL
 453  * @num_control_messages: (out) (optional): return location for the number of
 454  *   elements in @control_messages
 455  *
 456  * Structure used for scatter/gather data input when receiving multiple
 457  * messages or packets in one go. You generally pass in an array of empty
 458  * #GInputVectors and the operation will use all the buffers as if they
 459  * were one buffer, and will set @bytes_received to the total number of bytes
 460  * received across all #GInputVectors.
 461  *
 462  * This structure closely mirrors `struct mmsghdr` and `struct msghdr` from
 463  * the POSIX sockets API (see `man 2 recvmmsg`).
 464  *
 465  * If @address is non-%NULL then it is set to the source address the message
 466  * was received from, and the caller must free it afterwards.
 467  *
 468  * If @control_messages is non-%NULL then it is set to an array of control
 469  * messages received with the message (if any), and the caller must free it
 470  * afterwards. @num_control_messages is set to the number of elements in
 471  * this array, which may be zero.
 472  *
 473  * Flags relevant to this message will be returned in @flags. For example,
 474  * `MSG_EOR` or `MSG_TRUNC`.
 475  *
 476  * Since: 2.48
 477  */
 478 typedef struct _GInputMessage GInputMessage;
 479
 480 struct _GInputMessage {
 481   GSocketAddress         **address;
 482
 483   GInputVector            *vectors;
 484   guint                    num_vectors;
 485
 486   gsize                    bytes_received;
 487   gint                     flags;
 488
 489   GSocketControlMessage ***control_messages;
 490   guint                   *num_control_messages;
 491 };
 492
 493 /**
 494  * GOutputVector:
 495  * @buffer: Pointer to a buffer of data to read.
 496  * @size: the size of @buffer.
 497  *
 498  * Structure used for scatter/gather data output.
 499  * You generally pass in an array of #GOutputVectors
 500  * and the operation will use all the buffers as if they were
 501  * one buffer.
 502  *
 503  * Since: 2.22
 504  */
 505 typedef struct _GOutputVector GOutputVector;
 506
 507 struct _GOutputVector {
 508   gconstpointer buffer;
 509   gsize size;
 510 };
 511
 512 /**
 513  * GOutputMessage:
 514  * @address: (nullable): a #GSocketAddress, or %NULL
 515  * @vectors: pointer to an array of output vectors
 516  * @num_vectors: the number of output vectors pointed to by @vectors.
 517  * @bytes_sent: initialize to 0. Will be set to the number of bytes
 518  *     that have been sent
 519  * @control_messages: (array length=num_control_messages) (nullable): a pointer
 520  *   to an array of #GSocketControlMessages, or %NULL.
 521  * @num_control_messages: number of elements in @control_messages.
 522  *
 523  * Structure used for scatter/gather data output when sending multiple
 524  * messages or packets in one go. You generally pass in an array of
 525  * #GOutputVectors and the operation will use all the buffers as if they
 526  * were one buffer.
 527  *
 528  * If @address is %NULL then the message is sent to the default receiver
 529  * (as previously set by g_socket_connect()).
 530  *
 531  * Since: 2.44
 532  */
 533 typedef struct _GOutputMessage GOutputMessage;
 534
 535 struct _GOutputMessage {
 536   GSocketAddress         *address;
 537
 538   GOutputVector          *vectors;
 539   guint                   num_vectors;
 540
 541   guint                   bytes_sent;
 542
 543   GSocketControlMessage **control_messages;
 544   guint                   num_control_messages;
 545 };
 546
 547 typedef struct _GCredentials                  GCredentials;
 548 typedef struct _GUnixCredentialsMessage       GUnixCredentialsMessage;
 549 typedef struct _GUnixFDList                   GUnixFDList;
 550 typedef struct _GDBusMessage                  GDBusMessage;
 551 typedef struct _GDBusConnection               GDBusConnection;
 552 typedef struct _GDBusProxy                    GDBusProxy;
 553 typedef struct _GDBusMethodInvocation         GDBusMethodInvocation;
 554 typedef struct _GDBusServer                   GDBusServer;
 555 typedef struct _GDBusAuthObserver             GDBusAuthObserver;
 556 typedef struct _GDBusErrorEntry               GDBusErrorEntry;
 557 typedef struct _GDBusInterfaceVTable          GDBusInterfaceVTable;
 558 typedef struct _GDBusSubtreeVTable            GDBusSubtreeVTable;
 559 typedef struct _GDBusAnnotationInfo           GDBusAnnotationInfo;
 560 typedef struct _GDBusArgInfo                  GDBusArgInfo;
 561 typedef struct _GDBusMethodInfo               GDBusMethodInfo;
 562 typedef struct _GDBusSignalInfo               GDBusSignalInfo;
 563 typedef struct _GDBusPropertyInfo             GDBusPropertyInfo;
 564 typedef struct _GDBusInterfaceInfo            GDBusInterfaceInfo;
 565 typedef struct _GDBusNodeInfo                 GDBusNodeInfo;
 566
 567 /**
 568  * GCancellableSourceFunc:
 569  * @cancellable: the #GCancellable
 570  * @user_data: data passed in by the user.
 571  *
 572  * This is the function type of the callback used for the #GSource
 573  * returned by g_cancellable_source_new().
 574  *
 575  * Returns: it should return %FALSE if the source should be removed.
 576  *
 577  * Since: 2.28
 578  */
 579 typedef gboolean (*GCancellableSourceFunc) (GCancellable *cancellable,
 580                                             gpointer      user_data);
 581
 582 /**
 583  * GPollableSourceFunc:
 584  * @pollable_stream: the #GPollableInputStream or #GPollableOutputStream
 585  * @user_data: data passed in by the user.
 586  *
 587  * This is the function type of the callback used for the #GSource
 588  * returned by g_pollable_input_stream_create_source() and
 589  * g_pollable_output_stream_create_source().
 590  *
 591  * Returns: it should return %FALSE if the source should be removed.
 592  *
 593  * Since: 2.28
 594  */
 595 typedef gboolean (*GPollableSourceFunc) (GObject  *pollable_stream,
 596                                          gpointer  user_data);
 597
 598 typedef struct _GDBusInterface              GDBusInterface; /* Dummy typedef */
 599 typedef struct _GDBusInterfaceSkeleton      GDBusInterfaceSkeleton;
 600 typedef struct _GDBusObject                 GDBusObject;  /* Dummy typedef */
 601 typedef struct _GDBusObjectSkeleton         GDBusObjectSkeleton;
 602 typedef struct _GDBusObjectProxy            GDBusObjectProxy;
 603 typedef struct _GDBusObjectManager          GDBusObjectManager;  /* Dummy typedef */
 604 typedef struct _GDBusObjectManagerClient    GDBusObjectManagerClient;
 605 typedef struct _GDBusObjectManagerServer    GDBusObjectManagerServer;
 606
 607 /**
 608  * GDBusProxyTypeFunc:
 609  * @manager: A #GDBusObjectManagerClient.
 610  * @object_path: The object path of the remote object.
 611  * @interface_name: (nullable): The interface name of the remote object or %NULL if a #GDBusObjectProxy #GType is requested.
 612  * @user_data: User data.
 613  *
 614  * Function signature for a function used to determine the #GType to
 615  * use for an interface proxy (if @interface_name is not %NULL) or
 616  * object proxy (if @interface_name is %NULL).
 617  *
 618  * This function is called in the
 619  * [thread-default main loop][g-main-context-push-thread-default]
 620  * that @manager was constructed in.
 621  *
 622  * Returns: A #GType to use for the remote object. The returned type
 623  *   must be a #GDBusProxy or #GDBusObjectProxy -derived
 624  *   type.
 625  *
 626  * Since: 2.30
 627  */
 628 typedef GType (*GDBusProxyTypeFunc) (GDBusObjectManagerClient   *manager,
 629                                      const gchar                *object_path,
 630                                      const gchar                *interface_name,
 631                                      gpointer                    user_data);
 632
 633 typedef struct _GTestDBus GTestDBus;
 634
 635 /**
 636  * GSubprocess:
 637  *
 638  * A child process.
 639  *
 640  * Since: 2.40
 641  */
 642 typedef struct _GSubprocess                   GSubprocess;
 643 /**
 644  * GSubprocessLauncher:
 645  *
 646  * Options for launching a child process.
 647  *
 648  * Since: 2.40
 649  */
 650 typedef struct _GSubprocessLauncher           GSubprocessLauncher;
 651
 652 G_END_DECLS
 653
 654 #endif /* __GIO_TYPES_H__ */