| 1 | /* GIO - GLib Input, Output and Streaming Library |
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| 2 | * |
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| 3 | * Copyright (C) 2013 Collabora Ltd. |
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| 4 | * |
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| 5 | * This library is free software; you can redistribute it and/or |
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| 6 | * modify it under the terms of the GNU Lesser General Public |
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| 7 | * License as published by the Free Software Foundation; either |
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| 8 | * version 2.1 of the License, or (at your option) any later version. |
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| 9 | * |
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| 10 | * This library is distributed in the hope that it will be useful, |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | * Lesser General Public License for more details. |
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| 14 | * |
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| 15 | * You should have received a copy of the GNU Lesser General |
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| 16 | * Public License along with this library; if not, see <http://www.gnu.org/licenses/>. |
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| 17 | */ |
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| 18 | |
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| 19 | #ifndef __G_IO_PRIVATE_H__ |
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| 20 | #define __G_IO_PRIVATE_H__ |
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| 21 | |
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| 22 | #include "ginputstream.h" |
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| 23 | #include "goutputstream.h" |
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| 24 | #include "gsocketconnection.h" |
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| 25 | #include "gsocketaddress.h" |
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| 26 | |
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| 27 | G_BEGIN_DECLS |
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| 28 | |
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| 29 | gboolean g_input_stream_async_read_is_via_threads (GInputStream *stream); |
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| 30 | gboolean g_input_stream_async_close_is_via_threads (GInputStream *stream); |
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| 31 | gboolean g_output_stream_async_write_is_via_threads (GOutputStream *stream); |
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| 32 | gboolean g_output_stream_async_writev_is_via_threads (GOutputStream *stream); |
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| 33 | gboolean g_output_stream_async_close_is_via_threads (GOutputStream *stream); |
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| 34 | |
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| 35 | void g_socket_connection_set_cached_remote_address (GSocketConnection *connection, |
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| 36 | GSocketAddress *address); |
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| 37 | |
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| 38 | /* POSIX defines IOV_MAX/UIO_MAXIOV as the maximum number of iovecs that can |
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| 39 | * be sent in one go. We define our own version of it here as there are two |
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| 40 | * possible names, and also define a fall-back value if none of the constants |
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| 41 | * are defined */ |
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| 42 | #if defined(IOV_MAX) |
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| 43 | #define G_IOV_MAX IOV_MAX |
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| 44 | #elif defined(UIO_MAXIOV) |
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| 45 | #define G_IOV_MAX UIO_MAXIOV |
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| 46 | #elif defined(__APPLE__) |
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| 47 | /* For macOS/iOS, UIO_MAXIOV is documented in writev(2), but <sys/uio.h> |
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| 48 | * only declares it if defined(KERNEL) */ |
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| 49 | #define G_IOV_MAX 512 |
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| 50 | #else |
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| 51 | /* 16 is the minimum value required by POSIX */ |
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| 52 | #define G_IOV_MAX 16 |
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| 53 | #endif |
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| 54 | |
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| 55 | /* The various functions taking iovecs as parameter use a plain int |
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| 56 | * for the number of vectors. Limit it to G_MAXINT for this reason. |
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| 57 | */ |
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| 58 | G_STATIC_ASSERT (G_IOV_MAX <= G_MAXINT); |
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| 59 | |
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| 60 | G_END_DECLS |
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| 61 | |
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| 62 | #endif /* __G_IO_PRIVATE__ */ |
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| 63 | |
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