[glib] Import GIOStream from gnio
- From: Alexander Larsson <alexl src gnome org>
- To: svn-commits-list gnome org
- Subject: [glib] Import GIOStream from gnio
- Date: Wed, 13 May 2009 08:45:01 -0400 (EDT)
commit 05f544c59191ea7eab076fbb77a2e3648d52e167
Author: Alexander Larsson <alexl redhat com>
Date: Tue May 12 16:30:15 2009 +0200
Import GIOStream from gnio
Based on gnio rev 84516a5f544d8d5f3da368a83844e84eca8ef771
---
gio/Makefile.am | 2 +
gio/gio.h | 1 +
gio/gio.symbols | 15 ++
gio/giostream.c | 607 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
gio/giostream.h | 112 ++++++++++
gio/giotypes.h | 1 +
6 files changed, 738 insertions(+), 0 deletions(-)
diff --git a/gio/Makefile.am b/gio/Makefile.am
index 9a87508..78c2c3f 100644
--- a/gio/Makefile.am
+++ b/gio/Makefile.am
@@ -210,6 +210,7 @@ libgio_2_0_la_SOURCES = \
giomodule.c \
giomodule-priv.h \
gioscheduler.c \
+ giostream.c \
gloadableicon.c \
gmount.c \
gmemoryinputstream.c \
@@ -326,6 +327,7 @@ gio_headers = \
gioerror.h \
giomodule.h \
gioscheduler.h \
+ giostream.h \
gloadableicon.h \
gmount.h \
gmemoryinputstream.h \
diff --git a/gio/gio.h b/gio/gio.h
index 9539a60..63d0b79 100644
--- a/gio/gio.h
+++ b/gio/gio.h
@@ -57,6 +57,7 @@
#include <gio/gioerror.h>
#include <gio/giomodule.h>
#include <gio/gioscheduler.h>
+#include <gio/giostream.h>
#include <gio/gloadableicon.h>
#include <gio/gmemoryinputstream.h>
#include <gio/gmemoryoutputstream.h>
diff --git a/gio/gio.symbols b/gio/gio.symbols
index b3bedd1..9ebc37c 100644
--- a/gio/gio.symbols
+++ b/gio/gio.symbols
@@ -506,6 +506,21 @@ g_input_stream_clear_pending
#endif
#endif
+#if IN_HEADER(__G_IO_STREAM_H__)
+#if IN_FILE(__G_IO_STREAM_C__)
+g_io_stream_get_type G_GNUC_CONST
+g_io_stream_get_input_stream
+g_io_stream_get_output_stream
+g_io_stream_close
+g_io_stream_close_async
+g_io_stream_close_finish
+g_io_stream_is_closed
+g_io_stream_has_pending
+g_io_stream_set_pending
+g_io_stream_clear_pending
+#endif
+#endif
+
#if IN_HEADER(__G_IO_ERROR_H__)
#if IN_FILE(__G_IO_ERROR_C__)
g_io_error_quark
diff --git a/gio/giostream.c b/gio/giostream.c
new file mode 100644
index 0000000..3d22bd7
--- /dev/null
+++ b/gio/giostream.c
@@ -0,0 +1,607 @@
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright © 2008 codethink
+ * Copyright © 2009 Red Hat, Inc.
+ *
+ * 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 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, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Authors: Ryan Lortie <desrt desrt ca>
+ * Alexander Larsson <alexl redhat com>
+ */
+
+#include "config.h"
+#include <glib.h>
+#include "glibintl.h"
+
+#include "giostream.h"
+#include <gio/gsimpleasyncresult.h>
+#include <gio/gasyncresult.h>
+
+#include "gioalias.h"
+
+G_DEFINE_TYPE (GIOStream, g_io_stream, G_TYPE_OBJECT);
+
+/**
+ * SECTION:ginputstream
+ * @short_description: Base class for implementing readwrite streams
+ * @include: gio/gio.h
+ *
+ * GIOStream represents an object that has both read and write streams.
+ * Generally the two streams acts as separate input and output streams,
+ * but they share some common resources and state. For instance, for
+ * seekable streams they may use the same position in both streams.
+ *
+ * To do the actual reading and writing you need to get the substreams
+ * with g_io_stream_get_input_stream() and g_io_stream_get_output_stream().
+ *
+ * To close a stream use g_io_stream_close() which will close the common
+ * stream object and also the individual substreams. You can also close
+ * the substreams themselves. In most cases this only marks the
+ * substream as closed, so further I/O on it fails. However, some streams
+ * may support "half-closed" states where one direction of the stream
+ * is actually shut down.
+ *
+ * Since: 2.22
+ **/
+
+enum
+{
+ PROP_0,
+ PROP_INPUT_STREAM,
+ PROP_OUTPUT_STREAM,
+ PROP_CLOSED
+};
+
+struct _GIOStreamPrivate {
+ guint closed : 1;
+ guint pending : 1;
+ GAsyncReadyCallback outstanding_callback;
+};
+
+static gboolean g_io_stream_real_close (GIOStream *stream,
+ GCancellable *cancellable,
+ GError **error);
+static void g_io_stream_real_close_async (GIOStream *stream,
+ int io_priority,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data);
+static gboolean g_io_stream_real_close_finish (GIOStream *stream,
+ GAsyncResult *result,
+ GError **error);
+
+static void
+g_io_stream_finalize (GObject *object)
+{
+ GIOStream *stream;
+
+ stream = G_IO_STREAM (object);
+
+ if (!stream->priv->closed)
+ g_io_stream_close (stream, NULL, NULL);
+
+ G_OBJECT_CLASS (g_io_stream_parent_class)->finalize (object);
+}
+
+static void
+g_io_stream_dispose (GObject *object)
+{
+ GIOStream *stream;
+
+ stream = G_IO_STREAM (object);
+
+ if (!stream->priv->closed)
+ g_io_stream_close (stream, NULL, NULL);
+
+ G_OBJECT_CLASS (g_io_stream_parent_class)->dispose (object);
+}
+
+static void
+g_io_stream_init (GIOStream *stream)
+{
+ stream->priv = G_TYPE_INSTANCE_GET_PRIVATE (stream,
+ G_TYPE_IO_STREAM,
+ GIOStreamPrivate);
+}
+
+static void
+g_io_stream_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GIOStream *stream = G_IO_STREAM (object);
+
+ switch (prop_id)
+ {
+ case PROP_CLOSED:
+ g_value_set_boolean (value, stream->priv->closed);
+ break;
+
+ case PROP_INPUT_STREAM:
+ g_value_set_object (value, g_io_stream_get_input_stream (stream));
+ break;
+
+ case PROP_OUTPUT_STREAM:
+ g_value_set_object (value, g_io_stream_get_output_stream (stream));
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ }
+}
+
+static void
+g_io_stream_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ switch (prop_id)
+ {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ }
+}
+
+static void
+g_io_stream_class_init (GIOStreamClass *klass)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+
+ g_type_class_add_private (klass, sizeof (GIOStreamPrivate));
+
+ gobject_class->finalize = g_io_stream_finalize;
+ gobject_class->dispose = g_io_stream_dispose;
+ gobject_class->set_property = g_io_stream_set_property;
+ gobject_class->get_property = g_io_stream_get_property;
+
+ klass->close_fn = g_io_stream_real_close;
+ klass->close_async = g_io_stream_real_close_async;
+ klass->close_finish = g_io_stream_real_close_finish;
+
+ g_object_class_install_property (gobject_class, PROP_CLOSED,
+ g_param_spec_boolean ("closed",
+ P_("Closed"),
+ P_("Is the stream closed"),
+ FALSE,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (gobject_class, PROP_INPUT_STREAM,
+ g_param_spec_object ("input-stream",
+ P_("Input stream"),
+ P_("The GInputStream to read from"),
+ G_TYPE_INPUT_STREAM,
+ G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+ g_object_class_install_property (gobject_class, PROP_OUTPUT_STREAM,
+ g_param_spec_object ("output-stream",
+ P_("Output stream"),
+ P_("The GOutputStream to write to"),
+ G_TYPE_OUTPUT_STREAM,
+ G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+}
+
+/**
+ * g_io_stream_is_closed:
+ * @stream: a #GIOStream.
+ *
+ * Checks if a stream is closed.
+ *
+ * Returns: %TRUE if the stream is closed.
+ *
+ * Since: 2.22
+ **/
+gboolean
+g_io_stream_is_closed (GIOStream *stream)
+{
+ g_return_val_if_fail (G_IS_IO_STREAM (stream), TRUE);
+
+ return stream->priv->closed;
+}
+
+/**
+ * g_io_stream_get_input_stream:
+ * @stream: input #GIOStream.
+ *
+ * Gets the input stream for this object. This is used
+ * for reading.
+ *
+ * Returns: a #GInputStream, owned by the #GIOStream do not free.
+ *
+ * Since: 2.22
+ **/
+GInputStream *
+g_io_stream_get_input_stream (GIOStream *io_stream)
+{
+ GIOStreamClass *klass;
+
+ klass = G_IO_STREAM_GET_CLASS (io_stream);
+
+ g_assert (klass->get_input_stream != NULL);
+
+ return klass->get_input_stream (io_stream);
+}
+
+/**
+ * g_io_stream_get_output_stream:
+ * @stream: input #GIOStream.
+ *
+ * Gets the output stream for this object. This is used for
+ * writing.
+ *
+ * Returns: a #GOutputStream, owned by the #GIOStream do not free.
+ *
+ * Since: 2.22
+ **/
+GOutputStream *
+g_io_stream_get_output_stream (GIOStream *io_stream)
+{
+ GIOStreamClass *klass;
+
+ klass = G_IO_STREAM_GET_CLASS (io_stream);
+
+ g_assert (klass->get_output_stream != NULL);
+ return klass->get_output_stream (io_stream);
+}
+
+/**
+ * g_io_stream_has_pending:
+ * @stream: a #GIOStream.
+ *
+ * Checks if a stream has pending actions.
+ *
+ * Returns: %TRUE if @stream has pending actions.
+ *
+ * Since: 2.22
+ **/
+gboolean
+g_io_stream_has_pending (GIOStream *stream)
+{
+ g_return_val_if_fail (G_IS_IO_STREAM (stream), FALSE);
+
+ return stream->priv->pending;
+}
+
+/**
+ * g_io_stream_set_pending:
+ * @stream: a #GIOStream.
+ * @error: a #GError location to store the error occuring, or %NULL to
+ * ignore.
+ *
+ * Sets @stream to have actions pending. If the pending flag is
+ * already set or @stream is closed, it will return %FALSE and set
+ * @error.
+ *
+ * Return value: %TRUE if pending was previously unset and is now set.
+ *
+ * Since: 2.22
+ **/
+gboolean
+g_io_stream_set_pending (GIOStream *stream,
+ GError **error)
+{
+ g_return_val_if_fail (G_IS_IO_STREAM (stream), FALSE);
+
+ if (stream->priv->closed)
+ {
+ g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_CLOSED,
+ _("Stream is already closed"));
+ return FALSE;
+ }
+
+ if (stream->priv->pending)
+ {
+ g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_PENDING,
+ /* Translators: This is an error you get if there is
+ * already an operation running against this stream when
+ * you try to start one */
+ _("Stream has outstanding operation"));
+ return FALSE;
+ }
+
+ stream->priv->pending = TRUE;
+ return TRUE;
+}
+
+/**
+ * g_io_stream_clear_pending:
+ * @stream: output stream
+ *
+ * Clears the pending flag on @stream.
+ *
+ * Since: 2.22
+ **/
+void
+g_io_stream_clear_pending (GIOStream *stream)
+{
+ g_return_if_fail (G_IS_IO_STREAM (stream));
+
+ stream->priv->pending = FALSE;
+}
+
+static gboolean
+g_io_stream_real_close (GIOStream *stream,
+ GCancellable *cancellable,
+ GError **error)
+{
+ gboolean res;
+
+ res = g_output_stream_close (g_io_stream_get_output_stream (stream),
+ cancellable, error);
+
+ /* If this errored out, unset error so that we don't report
+ further errors, but still do the following ops */
+ if (error != NULL && *error != NULL)
+ error = NULL;
+
+ res &= g_input_stream_close (g_io_stream_get_input_stream (stream),
+ cancellable, error);
+
+ return res;
+}
+
+/**
+ * g_io_stream_close:
+ * @stream: A #GIOStream.
+ * @cancellable: optional #GCancellable object, %NULL to ignore.
+ * @error: location to store the error occuring, or %NULL to ignore
+ *
+ * Closes the stream, releasing resources related to it. This will also
+ * closes the individual input and output streams, if they are not already
+ * closed.
+ *
+ * Once the stream is closed, all other operations will return %G_IO_ERROR_CLOSED.
+ * Closing a stream multiple times will not return an error.
+ *
+ * Closing a stream will automatically flush any outstanding buffers in the
+ * stream.
+ *
+ * Streams will be automatically closed when the last reference
+ * is dropped, but you might want to call this function to make sure
+ * resources are released as early as possible.
+ *
+ * Some streams might keep the backing store of the stream (e.g. a file descriptor)
+ * open after the stream is closed. See the documentation for the individual
+ * stream for details.
+ *
+ * On failure the first error that happened will be reported, but the close
+ * operation will finish as much as possible. A stream that failed to
+ * close will still return %G_IO_ERROR_CLOSED for all operations. Still, it
+ * is important to check and report the error to the user, otherwise
+ * there might be a loss of data as all data might not be written.
+ *
+ * If @cancellable is not NULL, then the operation can be cancelled by
+ * triggering the cancellable object from another thread. If the operation
+ * was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
+ * Cancelling a close will still leave the stream closed, but some streams
+ * can use a faster close that doesn't block to e.g. check errors.
+ *
+ * The default implementation of this method just calls close on the
+ * individual input/output streams.
+ *
+ * Return value: %TRUE on success, %FALSE on failure
+ *
+ * Since: 2.22
+ **/
+gboolean
+g_io_stream_close (GIOStream *stream,
+ GCancellable *cancellable,
+ GError **error)
+{
+ GIOStreamClass *class;
+ gboolean res;
+
+ g_return_val_if_fail (G_IS_IO_STREAM (stream), FALSE);
+
+ class = G_IO_STREAM_GET_CLASS (stream);
+
+ if (stream->priv->closed)
+ return TRUE;
+
+ if (!g_io_stream_set_pending (stream, error))
+ return FALSE;
+
+ if (cancellable)
+ g_cancellable_push_current (cancellable);
+
+ res = TRUE;
+ if (class->close_fn)
+ res = class->close_fn (stream, cancellable, error);
+
+ if (cancellable)
+ g_cancellable_pop_current (cancellable);
+
+ stream->priv->closed = TRUE;
+ g_io_stream_clear_pending (stream);
+
+ return res;
+}
+
+static void
+async_ready_close_callback_wrapper (GObject *source_object,
+ GAsyncResult *res,
+ gpointer user_data)
+{
+ GIOStream *stream = G_IO_STREAM (source_object);
+
+ stream->priv->closed = TRUE;
+ g_io_stream_clear_pending (stream);
+ if (stream->priv->outstanding_callback)
+ (*stream->priv->outstanding_callback) (source_object, res, user_data);
+ g_object_unref (stream);
+}
+
+/**
+ * g_io_stream_close_async:
+ * @stream: A #GIOStream.
+ * @io_priority: the io priority of the request.
+ * @callback: callback to call when the request is satisfied
+ * @user_data: the data to pass to callback function
+ * @cancellable: optional cancellable object
+ *
+ * Requests an asynchronous close of the stream, releasing resources
+ * related to it. When the operation is finished @callback will be
+ * called. You can then call g_io_stream_close_finish() to get
+ * the result of the operation.
+ *
+ * For behaviour details see g_io_stream_close().
+ *
+ * The asyncronous methods have a default fallback that uses threads
+ * to implement asynchronicity, so they are optional for inheriting
+ * classes. However, if you override one you must override all.
+ *
+ * Since: 2.22
+ **/
+void
+g_io_stream_close_async (GIOStream *stream,
+ int io_priority,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ GIOStreamClass *class;
+ GSimpleAsyncResult *simple;
+ GError *error = NULL;
+
+ g_return_if_fail (G_IS_IO_STREAM (stream));
+
+ if (stream->priv->closed)
+ {
+ simple = g_simple_async_result_new (G_OBJECT (stream),
+ callback,
+ user_data,
+ g_io_stream_close_async);
+ g_simple_async_result_complete_in_idle (simple);
+ g_object_unref (simple);
+ return;
+ }
+
+ if (!g_io_stream_set_pending (stream, &error))
+ {
+ g_simple_async_report_gerror_in_idle (G_OBJECT (stream),
+ callback,
+ user_data,
+ error);
+ g_error_free (error);
+ return;
+ }
+
+ class = G_IO_STREAM_GET_CLASS (stream);
+ stream->priv->outstanding_callback = callback;
+ g_object_ref (stream);
+ class->close_async (stream, io_priority, cancellable,
+ async_ready_close_callback_wrapper, user_data);
+}
+
+/**
+ * g_io_stream_close_finish:
+ * @stream: a #GIOStream.
+ * @result: a #GAsyncResult.
+ * @error: a #GError location to store the error occuring, or %NULL to
+ * ignore.
+ *
+ * Closes a stream.
+ *
+ * Returns: %TRUE if stream was successfully closed, %FALSE otherwise.
+ *
+ * Since: 2.22
+ **/
+gboolean
+g_io_stream_close_finish (GIOStream *stream,
+ GAsyncResult *result,
+ GError **error)
+{
+ GSimpleAsyncResult *simple;
+ GIOStreamClass *class;
+
+ g_return_val_if_fail (G_IS_IO_STREAM (stream), FALSE);
+ g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
+
+ if (G_IS_SIMPLE_ASYNC_RESULT (result))
+ {
+ simple = G_SIMPLE_ASYNC_RESULT (result);
+ if (g_simple_async_result_propagate_error (simple, error))
+ return FALSE;
+
+ /* Special case already closed */
+ if (g_simple_async_result_get_source_tag (simple) == g_io_stream_close_async)
+ return TRUE;
+ }
+
+ class = G_IO_STREAM_GET_CLASS (stream);
+ return class->close_finish (stream, result, error);
+}
+
+
+static void
+close_async_thread (GSimpleAsyncResult *res,
+ GObject *object,
+ GCancellable *cancellable)
+{
+ GIOStreamClass *class;
+ GError *error = NULL;
+ gboolean result;
+
+ /* Auto handling of cancelation disabled, and ignore
+ cancellation, since we want to close things anyway, although
+ possibly in a quick-n-dirty way. At least we never want to leak
+ open handles */
+
+ class = G_IO_STREAM_GET_CLASS (object);
+ result = class->close_fn (G_IO_STREAM (object), cancellable, &error);
+ if (!result)
+ {
+ g_simple_async_result_set_from_error (res, error);
+ g_error_free (error);
+ }
+}
+
+static void
+g_io_stream_real_close_async (GIOStream *stream,
+ int io_priority,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ GSimpleAsyncResult *res;
+
+ res = g_simple_async_result_new (G_OBJECT (stream),
+ callback,
+ user_data,
+ g_io_stream_real_close_async);
+
+ g_simple_async_result_set_handle_cancellation (res, FALSE);
+
+ g_simple_async_result_run_in_thread (res,
+ close_async_thread,
+ io_priority,
+ cancellable);
+ g_object_unref (res);
+}
+
+static gboolean
+g_io_stream_real_close_finish (GIOStream *stream,
+ GAsyncResult *result,
+ GError **error)
+{
+ GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result);
+ g_warn_if_fail (g_simple_async_result_get_source_tag (simple) ==
+ g_io_stream_real_close_async);
+ return TRUE;
+}
+
+#define __G_IO_STREAM_C__
+#include "gioaliasdef.c"
diff --git a/gio/giostream.h b/gio/giostream.h
new file mode 100644
index 0000000..048fd4f
--- /dev/null
+++ b/gio/giostream.h
@@ -0,0 +1,112 @@
+/* GIO - GLib Input, Output and Streaming Library
+ *
+ * Copyright © 2008, 2009 Codethink Limited
+ * Copyright © 2009 Red Hat, Inc.
+ *
+ * This program 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 of the licence or (at
+ * your option) any later version.
+ *
+ * See the included COPYING file for more information.
+ *
+ * Authors: Ryan Lortie <desrt desrt ca>
+ * Alexander Larsson <alexl redhat com>
+ */
+
+#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
+#error "Only <gio/gio.h> can be included directly."
+#endif
+
+#ifndef __G_IO_STREAM_H__
+#define __G_IO_STREAM_H__
+
+#include <gio/ginputstream.h>
+#include <gio/goutputstream.h>
+#include <gio/gcancellable.h>
+#include <gio/gioerror.h>
+
+G_BEGIN_DECLS
+
+#define G_TYPE_IO_STREAM (g_io_stream_get_type ())
+#define G_IO_STREAM(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_IO_STREAM, GIOStream))
+#define G_IO_STREAM_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), G_TYPE_IO_STREAM, GIOStreamClass))
+#define G_IS_IO_STREAM(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_IO_STREAM))
+#define G_IS_IO_STREAM_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_TYPE_IO_STREAM))
+#define G_IO_STREAM_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_TYPE_IO_STREAM, GIOStreamClass))
+
+typedef struct _GIOStreamPrivate GIOStreamPrivate;
+typedef struct _GIOStreamClass GIOStreamClass;
+
+/**
+ * GIOStream:
+ *
+ * Base class for read-write streams.
+ **/
+struct _GIOStream
+{
+ GObject parent_instance;
+
+ /*< private >*/
+ GIOStreamPrivate *priv;
+};
+
+struct _GIOStreamClass
+{
+ GObjectClass parent_class;
+
+ GInputStream * (*get_input_stream) (GIOStream *stream);
+ GOutputStream * (*get_output_stream) (GIOStream *stream);
+
+ gboolean (* close_fn) (GIOStream *stream,
+ GCancellable *cancellable,
+ GError **error);
+ void (* close_async) (GIOStream *stream,
+ int io_priority,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data);
+ gboolean (* close_finish) (GIOStream *stream,
+ GAsyncResult *result,
+ GError **error);
+ /*< private >*/
+ /* Padding for future expansion */
+ void (*_g_reserved1) (void);
+ void (*_g_reserved2) (void);
+ void (*_g_reserved3) (void);
+ void (*_g_reserved4) (void);
+ void (*_g_reserved5) (void);
+ void (*_g_reserved6) (void);
+ void (*_g_reserved7) (void);
+ void (*_g_reserved8) (void);
+ void (*_g_reserved9) (void);
+ void (*_g_reserved10) (void);
+};
+
+GType g_io_stream_get_type (void) G_GNUC_CONST;
+
+GInputStream * g_io_stream_get_input_stream (GIOStream *stream);
+GOutputStream *g_io_stream_get_output_stream (GIOStream *stream);
+
+gboolean g_io_stream_close (GIOStream *stream,
+ GCancellable *cancellable,
+ GError **error);
+
+void g_io_stream_close_async (GIOStream *stream,
+ int io_priority,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data);
+gboolean g_io_stream_close_finish (GIOStream *stream,
+ GAsyncResult *result,
+ GError **error);
+
+gboolean g_io_stream_is_closed (GIOStream *stream);
+gboolean g_io_stream_has_pending (GIOStream *stream);
+gboolean g_io_stream_set_pending (GIOStream *stream,
+ GError **error);
+void g_io_stream_clear_pending (GIOStream *stream);
+
+G_END_DECLS
+
+#endif /* __G_IO_STREAM_H__ */
diff --git a/gio/giotypes.h b/gio/giotypes.h
index 41da274..9af8651 100644
--- a/gio/giotypes.h
+++ b/gio/giotypes.h
@@ -102,6 +102,7 @@ typedef struct _GMountOperation GMountOperation;
typedef struct _GNetworkAddress GNetworkAddress;
typedef struct _GNetworkService GNetworkService;
typedef struct _GOutputStream GOutputStream;
+typedef struct _GIOStream GIOStream;
typedef struct _GResolver GResolver;
typedef struct _GSeekable GSeekable;
typedef struct _GSimpleAsyncResult GSimpleAsyncResult;
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