src/config.h

   1 #ifndef __CONFIG_H
   2 #define __CONFIG_H
   3
   4 #ifdef __APPLE__
   5 #include <AvailabilityMacros.h>
   6 #endif
   7
   8 /* Define redis_fstat to fstat or fstat64() */
   9 #if defined(__APPLE__) && !defined(MAC_OS_X_VERSION_10_6)
  10 #define redis_fstat fstat64
  11 #define redis_stat stat64
  12 #else
  13 #define redis_fstat fstat
  14 #define redis_stat stat
  15 #endif
  16
  17 /* Test for proc filesystem */
  18 #ifdef __linux__
  19 #define HAVE_PROCFS 1
  20 #endif
  21
  22 /* Test for task_info() */
  23 #if defined(__APPLE__)
  24 #define HAVE_TASKINFO 1
  25 #endif
  26
  27 /* Test for backtrace() */
  28 #if defined(__APPLE__) || defined(__linux__) || defined(__sun)
  29 #define HAVE_BACKTRACE 1
  30 #endif
  31
  32 /* Test for polling API */
  33 #ifdef __linux__
  34 #define HAVE_EPOLL 1
  35 #endif
  36
  37 #if (defined(__APPLE__) && defined(MAC_OS_X_VERSION_10_6)) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined (__NetBSD__)
  38 #define HAVE_KQUEUE 1
  39 #endif
  40
  41 #ifdef __sun
  42 #include <sys/feature_tests.h>
  43 #ifdef _DTRACE_VERSION
  44 #define HAVE_EVPORT 1
  45 #endif
  46 #endif
  47
  48 /* Define aof_fsync to fdatasync() in Linux and fsync() for all the rest */
  49 #ifdef __linux__
  50 #define aof_fsync fdatasync
  51 #else
  52 #define aof_fsync fsync
  53 #endif
  54
  55 /* Define rdb_fsync_range to sync_file_range() on Linux, otherwise we use
  56  * the plain fsync() call. */
  57 #ifdef __linux__
  58 #include <linux/version.h>
  59 #include <features.h>
  60 #if defined(__GLIBC__) && defined(__GLIBC_PREREQ)
  61 #if (LINUX_VERSION_CODE >= 0x020611 && __GLIBC_PREREQ(2, 6))
  62 #define HAVE_SYNC_FILE_RANGE 1
  63 #endif
  64 #else
  65 #if (LINUX_VERSION_CODE >= 0x020611)
  66 #define HAVE_SYNC_FILE_RANGE 1
  67 #endif
  68 #endif
  69 #endif
  70
  71 #ifdef HAVE_SYNC_FILE_RANGE
  72 #define rdb_fsync_range(fd,off,size) sync_file_range(fd,off,size,SYNC_FILE_RANGE_WAIT_BEFORE|SYNC_FILE_RANGE_WRITE)
  73 #else
  74 #define rdb_fsync_range(fd,off,size) fsync(fd)
  75 #endif
  76
  77 /* Byte ordering detection */
  78 #include <sys/types.h> /* This will likely define BYTE_ORDER */
  79
  80 #ifndef BYTE_ORDER
  81 #if (BSD >= 199103)
  82 # include <machine/endian.h>
  83 #else
  84 #if defined(linux) || defined(__linux__)
  85 # include <endian.h>
  86 #else
  87 #define LITTLE_ENDIAN   1234    /* least-significant byte first (vax, pc) */
  88 #define BIG_ENDIAN      4321    /* most-significant byte first (IBM, net) */
  89 #define PDP_ENDIAN      3412    /* LSB first in word, MSW first in long (pdp)*/
  90
  91 #if defined(__i386__) || defined(__x86_64__) || defined(__amd64__) || \
  92    defined(vax) || defined(ns32000) || defined(sun386) || \
  93    defined(MIPSEL) || defined(_MIPSEL) || defined(BIT_ZERO_ON_RIGHT) || \
  94    defined(__alpha__) || defined(__alpha)
  95 #define BYTE_ORDER    LITTLE_ENDIAN
  96 #endif
  97
  98 #if defined(sel) || defined(pyr) || defined(mc68000) || defined(sparc) || \
  99     defined(is68k) || defined(tahoe) || defined(ibm032) || defined(ibm370) || \
 100     defined(MIPSEB) || defined(_MIPSEB) || defined(_IBMR2) || defined(DGUX) ||\
 101     defined(apollo) || defined(__convex__) || defined(_CRAY) || \
 102     defined(__hppa) || defined(__hp9000) || \
 103     defined(__hp9000s300) || defined(__hp9000s700) || \
 104     defined (BIT_ZERO_ON_LEFT) || defined(m68k) || defined(__sparc)
 105 #define BYTE_ORDER      BIG_ENDIAN
 106 #endif
 107 #endif /* linux */
 108 #endif /* BSD */
 109 #endif /* BYTE_ORDER */
 110
 111 #if defined(__BYTE_ORDER) && !defined(BYTE_ORDER)
 112 #if (__BYTE_ORDER == __LITTLE_ENDIAN)
 113 #define BYTE_ORDER LITTLE_ENDIAN
 114 #else
 115 #define BYTE_ORDER BIG_ENDIAN
 116 #endif
 117 #endif
 118
 119 #if !defined(BYTE_ORDER) || \
 120     (BYTE_ORDER != BIG_ENDIAN && BYTE_ORDER != LITTLE_ENDIAN)
 121         /* you must determine what the correct bit order is for
 122          * your compiler - the next line is an intentional error
 123          * which will force your compiles to bomb until you fix
 124          * the above macros.
 125          */
 126 #error "Undefined or invalid BYTE_ORDER"
 127 #endif
 128
 129 #if (__i386 || __amd64) && __GNUC__
 130 #define GNUC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
 131 #if GNUC_VERSION >= 40100
 132 #define HAVE_ATOMIC
 133 #endif
 134 #endif
 135
 136
 137 #endif