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1 /*
2 * Copyright (c) 2009-2012, Salvatore Sanfilippo <antirez at gmail dot com>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * * Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * * Neither the name of Redis nor the names of its contributors may be used
14 * to endorse or promote products derived from this software without
15 * specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
21 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #ifndef __CONFIG_H
31 #define __CONFIG_H
32
33 #ifdef __APPLE__
34 #include <AvailabilityMacros.h>
35 #endif
36
37 /* Define redis_fstat to fstat or fstat64() */
38 #if defined(__APPLE__) && !defined(MAC_OS_X_VERSION_10_6)
39 #define redis_fstat fstat64
40 #define redis_stat stat64
41 #else
42 #define redis_fstat fstat
43 #define redis_stat stat
44 #endif
45
46 /* Test for proc filesystem */
47 #ifdef __linux__
48 #define HAVE_PROC_STAT 1
49 #define HAVE_PROC_MAPS 1
50 #define HAVE_PROC_SMAPS 1
51 #endif
52
53 /* Test for task_info() */
54 #if defined(__APPLE__)
55 #define HAVE_TASKINFO 1
56 #endif
57
58 /* Test for backtrace() */
59 #if defined(__APPLE__) || defined(__linux__) || defined(__sun)
60 #define HAVE_BACKTRACE 1
61 #endif
62
63 /* Test for polling API */
64 #ifdef __linux__
65 #define HAVE_EPOLL 1
66 #endif
67
68 #if (defined(__APPLE__) && defined(MAC_OS_X_VERSION_10_6)) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined (__NetBSD__)
69 #define HAVE_KQUEUE 1
70 #endif
71
72 #ifdef __sun
73 #include <sys/feature_tests.h>
74 #ifdef _DTRACE_VERSION
75 #define HAVE_EVPORT 1
76 #endif
77 #endif
78
79 /* Define aof_fsync to fdatasync() in Linux and fsync() for all the rest */
80 #ifdef __linux__
81 #define aof_fsync fdatasync
82 #else
83 #define aof_fsync fsync
84 #endif
85
86 /* Define rdb_fsync_range to sync_file_range() on Linux, otherwise we use
87 * the plain fsync() call. */
88 #ifdef __linux__
89 #include <linux/version.h>
90 #include <features.h>
91 #if defined(__GLIBC__) && defined(__GLIBC_PREREQ)
92 #if (LINUX_VERSION_CODE >= 0x020611 && __GLIBC_PREREQ(2, 6))
93 #define HAVE_SYNC_FILE_RANGE 1
94 #endif
95 #else
96 #if (LINUX_VERSION_CODE >= 0x020611)
97 #define HAVE_SYNC_FILE_RANGE 1
98 #endif
99 #endif
100 #endif
101
102 #ifdef HAVE_SYNC_FILE_RANGE
103 #define rdb_fsync_range(fd,off,size) sync_file_range(fd,off,size,SYNC_FILE_RANGE_WAIT_BEFORE|SYNC_FILE_RANGE_WRITE)
104 #else
105 #define rdb_fsync_range(fd,off,size) fsync(fd)
106 #endif
107
108 /* Byte ordering detection */
109 #include <sys/types.h> /* This will likely define BYTE_ORDER */
110
111 #ifndef BYTE_ORDER
112 #if (BSD >= 199103)
113 # include <machine/endian.h>
114 #else
115 #if defined(linux) || defined(__linux__)
116 # include <endian.h>
117 #else
118 #define LITTLE_ENDIAN 1234 /* least-significant byte first (vax, pc) */
119 #define BIG_ENDIAN 4321 /* most-significant byte first (IBM, net) */
120 #define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long (pdp)*/
121
122 #if defined(__i386__) || defined(__x86_64__) || defined(__amd64__) || \
123 defined(vax) || defined(ns32000) || defined(sun386) || \
124 defined(MIPSEL) || defined(_MIPSEL) || defined(BIT_ZERO_ON_RIGHT) || \
125 defined(__alpha__) || defined(__alpha)
126 #define BYTE_ORDER LITTLE_ENDIAN
127 #endif
128
129 #if defined(sel) || defined(pyr) || defined(mc68000) || defined(sparc) || \
130 defined(is68k) || defined(tahoe) || defined(ibm032) || defined(ibm370) || \
131 defined(MIPSEB) || defined(_MIPSEB) || defined(_IBMR2) || defined(DGUX) ||\
132 defined(apollo) || defined(__convex__) || defined(_CRAY) || \
133 defined(__hppa) || defined(__hp9000) || \
134 defined(__hp9000s300) || defined(__hp9000s700) || \
135 defined (BIT_ZERO_ON_LEFT) || defined(m68k) || defined(__sparc)
136 #define BYTE_ORDER BIG_ENDIAN
137 #endif
138 #endif /* linux */
139 #endif /* BSD */
140 #endif /* BYTE_ORDER */
141
142 #if defined(__BYTE_ORDER) && !defined(BYTE_ORDER)
143 #if (__BYTE_ORDER == __LITTLE_ENDIAN)
144 #define BYTE_ORDER LITTLE_ENDIAN
145 #else
146 #define BYTE_ORDER BIG_ENDIAN
147 #endif
148 #endif
149
150 #if !defined(BYTE_ORDER) || \
151 (BYTE_ORDER != BIG_ENDIAN && BYTE_ORDER != LITTLE_ENDIAN)
152 /* you must determine what the correct bit order is for
153 * your compiler - the next line is an intentional error
154 * which will force your compiles to bomb until you fix
155 * the above macros.
156 */
157 #error "Undefined or invalid BYTE_ORDER"
158 #endif
159
160 #if (__i386 || __amd64) && __GNUC__
161 #define GNUC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
162 #if GNUC_VERSION >= 40100
163 #define HAVE_ATOMIC
164 #endif
165 #endif
166
167
168 #endif