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/* GIO - GLib Input, Output and Streaming Library
*
* Copyright (C) 2010 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.
*/
#ifndef __G_POLLABLE_OUTPUT_STREAM_H__
#define __G_POLLABLE_OUTPUT_STREAM_H__
#include <gio/gio.h>
G_BEGIN_DECLS
#define G_TYPE_POLLABLE_OUTPUT_STREAM (g_pollable_output_stream_get_type ())
#define G_POLLABLE_OUTPUT_STREAM(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), G_TYPE_POLLABLE_OUTPUT_STREAM, GPollableOutputStream))
#define G_IS_POLLABLE_OUTPUT_STREAM(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), G_TYPE_POLLABLE_OUTPUT_STREAM))
#define G_POLLABLE_OUTPUT_STREAM_GET_INTERFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), G_TYPE_POLLABLE_OUTPUT_STREAM, GPollableOutputStreamInterface))
/**
* GPollableOutputStream:
*
* An interface for a #GOutputStream that can be polled for readability.
*
* Since: 2.28
*/
typedef struct _GPollableOutputStreamInterface GPollableOutputStreamInterface;
/**
* GPollableOutputStreamInterface:
* @g_iface: The parent interface.
* @can_poll: Checks if the #GPollableOutputStream instance is actually pollable
* @is_writable: Checks if the stream is writable
* @create_source: Creates a #GSource to poll the stream
* @write_nonblocking: Does a non-blocking write or returns
* %G_IO_ERROR_WOULD_BLOCK
*
* The interface for pollable output streams.
*
* The default implementation of @can_poll always returns %TRUE.
*
* The default implementation of @write_nonblocking calls
* g_pollable_output_stream_is_writable(), and then calls
* g_output_stream_write() if it returns %TRUE. This means you only
* need to override it if it is possible that your @is_writable
* implementation may return %TRUE when the stream is not actually
* writable.
*
* Since: 2.28
*/
struct _GPollableOutputStreamInterface
{
GTypeInterface g_iface;
/* Virtual Table */
gboolean (*can_poll) (GPollableOutputStream *stream);
gboolean (*is_writable) (GPollableOutputStream *stream);
GSource * (*create_source) (GPollableOutputStream *stream,
GCancellable *cancellable);
gssize (*write_nonblocking) (GPollableOutputStream *stream,
const void *buffer,
gsize size,
GError **error);
};
GType g_pollable_output_stream_get_type (void) G_GNUC_CONST;
gboolean g_pollable_output_stream_can_poll (GPollableOutputStream *stream);
gboolean g_pollable_output_stream_is_writable (GPollableOutputStream *stream);
GSource *g_pollable_output_stream_create_source (GPollableOutputStream *stream,
GCancellable *cancellable);
gssize g_pollable_output_stream_write_nonblocking (GPollableOutputStream *stream,
const void *buffer,
gsize size,
GCancellable *cancellable,
GError **error);
G_END_DECLS
#endif /* __G_POLLABLE_OUTPUT_STREAM_H__ */
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