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__) 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 /* Sometimes after including an OS-specific header that defines the 143 * endianess we end with __BYTE_ORDER but not with BYTE_ORDER that is what 144 * the Redis code uses. In this case let's define everything without the 145 * underscores. */ 146 #ifndef BYTE_ORDER 147 #ifdef __BYTE_ORDER 148 #if defined(__LITTLE_ENDIAN) && defined(__BIG_ENDIAN) 149 #ifndef LITTLE_ENDIAN 150 #define LITTLE_ENDIAN __LITTLE_ENDIAN 151 #endif 152 #ifndef BIG_ENDIAN 153 #define BIG_ENDIAN __BIG_ENDIAN 154 #endif 155 #if (__BYTE_ORDER == __LITTLE_ENDIAN) 156 #define BYTE_ORDER LITTLE_ENDIAN 157 #else 158 #define BYTE_ORDER BIG_ENDIAN 159 #endif 160 #endif 161 #endif 162 #endif 163 164 #if !defined(BYTE_ORDER) || \ 165 (BYTE_ORDER != BIG_ENDIAN && BYTE_ORDER != LITTLE_ENDIAN) 166 /* you must determine what the correct bit order is for 167 * your compiler - the next line is an intentional error 168 * which will force your compiles to bomb until you fix 169 * the above macros. 170 */ 171 #error "Undefined or invalid BYTE_ORDER" 172 #endif 173 174 #if (__i386 || __amd64) && __GNUC__ 175 #define GNUC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) 176 #if GNUC_VERSION >= 40100 177 #define HAVE_ATOMIC 178 #endif 179 #endif 180 181 #endif 182