1 /* GIO - GLib Input, Output and Streaming Library
3 * Copyright (C) 2013 Collabora Ltd.
5 * SPDX-License-Identifier: LGPL-2.1-or-later
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General
18 * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
21 #ifndef __G_IO_PRIVATE_H__
22 #define __G_IO_PRIVATE_H__
24 #include "ginputstream.h"
25 #include "goutputstream.h"
26 #include "gsocketconnection.h"
27 #include "gsocketaddress.h"
31 gboolean g_input_stream_async_read_is_via_threads (GInputStream *stream);
32 gboolean g_input_stream_async_close_is_via_threads (GInputStream *stream);
33 gboolean g_output_stream_async_write_is_via_threads (GOutputStream *stream);
34 gboolean g_output_stream_async_writev_is_via_threads (GOutputStream *stream);
35 gboolean g_output_stream_async_close_is_via_threads (GOutputStream *stream);
37 void g_socket_connection_set_cached_remote_address (GSocketConnection *connection,
38 GSocketAddress *address);
40 /* POSIX defines IOV_MAX/UIO_MAXIOV as the maximum number of iovecs that can
41 * be sent in one go. We define our own version of it here as there are two
42 * possible names, and also define a fall-back value if none of the constants
45 #define G_IOV_MAX IOV_MAX
46 #elif defined(UIO_MAXIOV)
47 #define G_IOV_MAX UIO_MAXIOV
48 #elif defined(__APPLE__)
49 /* For macOS/iOS, UIO_MAXIOV is documented in writev(2), but <sys/uio.h>
50 * only declares it if defined(KERNEL) */
53 /* 16 is the minimum value required by POSIX */
57 /* The various functions taking iovecs as parameter use a plain int
58 * for the number of vectors. Limit it to G_MAXINT for this reason.
60 G_STATIC_ASSERT (G_IOV_MAX <= G_MAXINT);
64 #endif /* __G_IO_PRIVATE__ */