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 #define rdb_fsync_range(fd,off,size) sync_file_range(fd,off,size,SYNC_FILE_RANGE_WAIT_BEFORE|SYNC_FILE_RANGE_WRITE)
  59 #else
  60 #define rdb_fsync_range(fd,off,size) fsync(fd)
  61 #endif
  62
  63 /* Byte ordering detection */
  64 #include <sys/types.h> /* This will likely define BYTE_ORDER */
  65
  66 #ifndef BYTE_ORDER
  67 #if (BSD >= 199103)
  68 # include <machine/endian.h>
  69 #else
  70 #if defined(linux) || defined(__linux__)
  71 # include <endian.h>
  72 #else
  73 #define LITTLE_ENDIAN   1234    /* least-significant byte first (vax, pc) */
  74 #define BIG_ENDIAN      4321    /* most-significant byte first (IBM, net) */
  75 #define PDP_ENDIAN      3412    /* LSB first in word, MSW first in long (pdp)*/
  76
  77 #if defined(__i386__) || defined(__x86_64__) || defined(__amd64__) || \
  78    defined(vax) || defined(ns32000) || defined(sun386) || \
  79    defined(MIPSEL) || defined(_MIPSEL) || defined(BIT_ZERO_ON_RIGHT) || \
  80    defined(__alpha__) || defined(__alpha)
  81 #define BYTE_ORDER    LITTLE_ENDIAN
  82 #endif
  83
  84 #if defined(sel) || defined(pyr) || defined(mc68000) || defined(sparc) || \
  85     defined(is68k) || defined(tahoe) || defined(ibm032) || defined(ibm370) || \
  86     defined(MIPSEB) || defined(_MIPSEB) || defined(_IBMR2) || defined(DGUX) ||\
  87     defined(apollo) || defined(__convex__) || defined(_CRAY) || \
  88     defined(__hppa) || defined(__hp9000) || \
  89     defined(__hp9000s300) || defined(__hp9000s700) || \
  90     defined (BIT_ZERO_ON_LEFT) || defined(m68k) || defined(__sparc)
  91 #define BYTE_ORDER      BIG_ENDIAN
  92 #endif
  93 #endif /* linux */
  94 #endif /* BSD */
  95 #endif /* BYTE_ORDER */
  96
  97 #if defined(__BYTE_ORDER) && !defined(BYTE_ORDER)
  98 #if (__BYTE_ORDER == __LITTLE_ENDIAN)
  99 #define BYTE_ORDER LITTLE_ENDIAN
 100 #else
 101 #define BYTE_ORDER BIG_ENDIAN
 102 #endif
 103 #endif
 104
 105 #if !defined(BYTE_ORDER) || \
 106     (BYTE_ORDER != BIG_ENDIAN && BYTE_ORDER != LITTLE_ENDIAN)
 107         /* you must determine what the correct bit order is for
 108          * your compiler - the next line is an intentional error
 109          * which will force your compiles to bomb until you fix
 110          * the above macros.
 111          */
 112 #error "Undefined or invalid BYTE_ORDER"
 113 #endif
 114
 115 #if (__i386 || __amd64) && __GNUC__
 116 #define GNUC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
 117 #if GNUC_VERSION >= 40100
 118 #define HAVE_ATOMIC
 119 #endif
 120 #endif
 121
 122
 123 #endif