Import Upstream version 2.72.4
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282
gio/gsocketoutputstream.c
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282
gio/gsocketoutputstream.c
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/* GIO - GLib Input, Output and Streaming Library
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*
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* Copyright © 2008 Christian Kellner, Samuel Cormier-Iijima
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* © 2009 codethink
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*
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* Authors: Christian Kellner <gicmo@gnome.org>
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* Samuel Cormier-Iijima <sciyoshi@gmail.com>
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* Ryan Lortie <desrt@desrt.ca>
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*/
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#include "config.h"
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#include "goutputstream.h"
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#include "gsocketoutputstream.h"
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#include "gsocket.h"
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#include "glibintl.h"
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#include "gcancellable.h"
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#include "gpollableinputstream.h"
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#include "gpollableoutputstream.h"
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#include "gioerror.h"
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#include "glibintl.h"
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#include "gfiledescriptorbased.h"
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#include "gioprivate.h"
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struct _GSocketOutputStreamPrivate
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{
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GSocket *socket;
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/* pending operation metadata */
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gconstpointer buffer;
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gsize count;
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};
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static void g_socket_output_stream_pollable_iface_init (GPollableOutputStreamInterface *iface);
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#ifdef G_OS_UNIX
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static void g_socket_output_stream_file_descriptor_based_iface_init (GFileDescriptorBasedIface *iface);
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#endif
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#define g_socket_output_stream_get_type _g_socket_output_stream_get_type
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#ifdef G_OS_UNIX
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G_DEFINE_TYPE_WITH_CODE (GSocketOutputStream, g_socket_output_stream, G_TYPE_OUTPUT_STREAM,
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G_ADD_PRIVATE (GSocketOutputStream)
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G_IMPLEMENT_INTERFACE (G_TYPE_POLLABLE_OUTPUT_STREAM, g_socket_output_stream_pollable_iface_init)
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G_IMPLEMENT_INTERFACE (G_TYPE_FILE_DESCRIPTOR_BASED, g_socket_output_stream_file_descriptor_based_iface_init)
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)
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#else
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G_DEFINE_TYPE_WITH_CODE (GSocketOutputStream, g_socket_output_stream, G_TYPE_OUTPUT_STREAM,
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G_ADD_PRIVATE (GSocketOutputStream)
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G_IMPLEMENT_INTERFACE (G_TYPE_POLLABLE_OUTPUT_STREAM, g_socket_output_stream_pollable_iface_init)
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)
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#endif
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enum
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{
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PROP_0,
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PROP_SOCKET
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};
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static void
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g_socket_output_stream_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GSocketOutputStream *stream = G_SOCKET_OUTPUT_STREAM (object);
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switch (prop_id)
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{
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case PROP_SOCKET:
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g_value_set_object (value, stream->priv->socket);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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}
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}
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static void
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g_socket_output_stream_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GSocketOutputStream *stream = G_SOCKET_OUTPUT_STREAM (object);
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switch (prop_id)
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{
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case PROP_SOCKET:
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stream->priv->socket = g_value_dup_object (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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}
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}
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static void
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g_socket_output_stream_finalize (GObject *object)
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{
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GSocketOutputStream *stream = G_SOCKET_OUTPUT_STREAM (object);
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if (stream->priv->socket)
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g_object_unref (stream->priv->socket);
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G_OBJECT_CLASS (g_socket_output_stream_parent_class)->finalize (object);
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}
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static gssize
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g_socket_output_stream_write (GOutputStream *stream,
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const void *buffer,
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gsize count,
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GCancellable *cancellable,
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GError **error)
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{
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GSocketOutputStream *output_stream = G_SOCKET_OUTPUT_STREAM (stream);
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return g_socket_send_with_blocking (output_stream->priv->socket,
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buffer, count, TRUE,
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cancellable, error);
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}
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static gboolean
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g_socket_output_stream_writev (GOutputStream *stream,
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const GOutputVector *vectors,
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gsize n_vectors,
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gsize *bytes_written,
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GCancellable *cancellable,
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GError **error)
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{
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GSocketOutputStream *output_stream = G_SOCKET_OUTPUT_STREAM (stream);
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GPollableReturn res;
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/* Clamp the number of vectors if more given than we can write in one go.
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* The caller has to handle short writes anyway.
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*/
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if (n_vectors > G_IOV_MAX)
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n_vectors = G_IOV_MAX;
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res = g_socket_send_message_with_timeout (output_stream->priv->socket, NULL,
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vectors, n_vectors,
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NULL, 0, G_SOCKET_MSG_NONE,
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-1, bytes_written,
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cancellable, error);
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/* we have a non-zero timeout so this can't happen */
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g_assert (res != G_POLLABLE_RETURN_WOULD_BLOCK);
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return res == G_POLLABLE_RETURN_OK;
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}
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static gboolean
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g_socket_output_stream_pollable_is_writable (GPollableOutputStream *pollable)
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{
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GSocketOutputStream *output_stream = G_SOCKET_OUTPUT_STREAM (pollable);
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return g_socket_condition_check (output_stream->priv->socket, G_IO_OUT);
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}
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static gssize
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g_socket_output_stream_pollable_write_nonblocking (GPollableOutputStream *pollable,
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const void *buffer,
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gsize size,
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GError **error)
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{
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GSocketOutputStream *output_stream = G_SOCKET_OUTPUT_STREAM (pollable);
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return g_socket_send_with_blocking (output_stream->priv->socket,
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buffer, size, FALSE,
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NULL, error);
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}
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static GPollableReturn
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g_socket_output_stream_pollable_writev_nonblocking (GPollableOutputStream *pollable,
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const GOutputVector *vectors,
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gsize n_vectors,
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gsize *bytes_written,
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GError **error)
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{
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GSocketOutputStream *output_stream = G_SOCKET_OUTPUT_STREAM (pollable);
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/* Clamp the number of vectors if more given than we can write in one go.
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* The caller has to handle short writes anyway.
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*/
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if (n_vectors > G_IOV_MAX)
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n_vectors = G_IOV_MAX;
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return g_socket_send_message_with_timeout (output_stream->priv->socket,
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NULL, vectors, n_vectors,
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NULL, 0, G_SOCKET_MSG_NONE, 0,
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bytes_written, NULL, error);
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}
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static GSource *
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g_socket_output_stream_pollable_create_source (GPollableOutputStream *pollable,
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GCancellable *cancellable)
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{
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GSocketOutputStream *output_stream = G_SOCKET_OUTPUT_STREAM (pollable);
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GSource *socket_source, *pollable_source;
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pollable_source = g_pollable_source_new (G_OBJECT (output_stream));
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socket_source = g_socket_create_source (output_stream->priv->socket,
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G_IO_OUT, cancellable);
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g_source_set_dummy_callback (socket_source);
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g_source_add_child_source (pollable_source, socket_source);
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g_source_unref (socket_source);
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return pollable_source;
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}
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#ifdef G_OS_UNIX
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static int
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g_socket_output_stream_get_fd (GFileDescriptorBased *fd_based)
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{
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GSocketOutputStream *output_stream = G_SOCKET_OUTPUT_STREAM (fd_based);
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return g_socket_get_fd (output_stream->priv->socket);
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}
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#endif
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static void
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g_socket_output_stream_class_init (GSocketOutputStreamClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GOutputStreamClass *goutputstream_class = G_OUTPUT_STREAM_CLASS (klass);
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gobject_class->finalize = g_socket_output_stream_finalize;
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gobject_class->get_property = g_socket_output_stream_get_property;
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gobject_class->set_property = g_socket_output_stream_set_property;
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goutputstream_class->write_fn = g_socket_output_stream_write;
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goutputstream_class->writev_fn = g_socket_output_stream_writev;
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g_object_class_install_property (gobject_class, PROP_SOCKET,
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g_param_spec_object ("socket",
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P_("socket"),
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P_("The socket that this stream wraps"),
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G_TYPE_SOCKET, G_PARAM_CONSTRUCT_ONLY |
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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}
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#ifdef G_OS_UNIX
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static void
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g_socket_output_stream_file_descriptor_based_iface_init (GFileDescriptorBasedIface *iface)
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{
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iface->get_fd = g_socket_output_stream_get_fd;
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}
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#endif
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static void
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g_socket_output_stream_pollable_iface_init (GPollableOutputStreamInterface *iface)
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{
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iface->is_writable = g_socket_output_stream_pollable_is_writable;
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iface->create_source = g_socket_output_stream_pollable_create_source;
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iface->write_nonblocking = g_socket_output_stream_pollable_write_nonblocking;
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iface->writev_nonblocking = g_socket_output_stream_pollable_writev_nonblocking;
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}
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static void
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g_socket_output_stream_init (GSocketOutputStream *stream)
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{
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stream->priv = g_socket_output_stream_get_instance_private (stream);
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}
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GSocketOutputStream *
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_g_socket_output_stream_new (GSocket *socket)
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{
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return g_object_new (G_TYPE_SOCKET_OUTPUT_STREAM, "socket", socket, NULL);
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}
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