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annotate tests/test-nonblocking-socket.h @ 16201:8250f2777afc

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maint: update all copyright year number ranges Run "make update-copyright".
author Jim Meyering <meyering@redhat.com>
date Sun, 01 Jan 2012 10:04:58 +0100
parents 22c19cdc7906
children ec738d6aeef5
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1 /* Test for nonblocking read and write.
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2
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3 Copyright (C) 2011-2012 Free Software Foundation, Inc.
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4
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5 This program is free software: you can redistribute it and/or modify
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6 it under the terms of the GNU General Public License as published by
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7 the Free Software Foundation; either version 3 of the License, or
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8 (at your option) any later version.
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9
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10 This program 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
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13 GNU 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 General Public License
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16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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17
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18 /* A data block ought to be larger than the size of the in-kernel buffer.
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19 Working values of SOCKET_DATA_BLOCK_SIZE, depending on kernel:
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20
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21 Platform SOCKET_DATA_BLOCK_SIZE
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22
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23 Linux >= 7350000 (depends on circumstances)
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24 FreeBSD >= 107521
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25 OpenBSD >= 28673
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26 MacOS X >= 680000 (depends on circumstances)
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27 AIX 5.1 >= 125713
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28 AIX 7.1 >= 200000 (depends on circumstances)
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29 HP-UX >= 114689
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30 IRIX >= 61089
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31 OSF/1 >= 122881
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32 Solaris 7 >= 63000 (depends on circumstances)
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33 Solaris 8 >= 49153
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34 Solaris 9 >= 73729
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35 Solaris 10 >= 98305
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36 Solaris 11 2010-11 >= 73729
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37 Cygwin 1.5.x >= 66294401 but then write() fails with ENOBUFS
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38 Cygwin 1.7.x >= 163838 (depends on circumstances)
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39 native Win32 >= 66294401
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40 */
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41 #if defined __OpenBSD__
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42 # define SOCKET_DATA_BLOCK_SIZE 100000
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43 #else
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44 # define SOCKET_DATA_BLOCK_SIZE 1000000
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45 #endif
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46
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47 /* On Linux, MacOS X, Cygwin 1.5.x, native Win32,
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48 sockets have very large buffers in the kernel, so that write() calls
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49 succeed before the reader has started reading, even if fd is blocking
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50 and the amount of data is larger than 1 MB. */
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51 #if defined __linux__ || (defined __APPLE__ && defined __MACH__) || (defined _WIN32 || defined __WIN32__) || defined __CYGWIN__
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52 # define SOCKET_HAS_LARGE_BUFFER 1
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53 #else
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54 # define SOCKET_HAS_LARGE_BUFFER 0
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55 #endif