src/common/torint.h

   1 /* Copyright (c) 2003, Roger Dingledine
   2  * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
   3  * Copyright (c) 2007-2009, The Tor Project, Inc. */
   4 /* See LICENSE for licensing information */
   5
   6 /**
   7  * \file torint.h
   8  * \brief Header file to define uint32_t and friends
   9  **/
  10
  11 #ifndef _TOR_TORINT_H
  12 #define _TOR_TORINT_H
  13
  14 #include "orconfig.h"
  15
  16 #ifdef HAVE_STDINT_H
  17 #include <stdint.h>
  18 #endif
  19 #ifdef HAVE_SYS_TYPES_H
  20 #include <sys/types.h>
  21 #endif
  22 #ifdef HAVE_LIMITS_H
  23 #include <limits.h>
  24 #endif
  25 #ifdef HAVE_SYS_LIMITS_H
  26 #include <sys/limits.h>
  27 #endif
  28 #ifdef HAVE_MACHINE_LIMITS_H
  29 #if !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__)
  30   /* FreeBSD has a bug where it complains that this file is obsolete,
  31      and I should migrate to using sys/limits. It complains even when
  32      I include both.
  33      __FreeBSD_kernel__ is defined by Debian GNU/kFreeBSD which
  34       does the same thing (but doesn't defined __FreeBSD__).
  35      */
  36 #include <machine/limits.h>
  37 #endif
  38 #endif
  39 #ifdef HAVE_INTTYPES_H
  40 #include <inttypes.h>
  41 #endif
  42
  43 #if (SIZEOF_INT8_T != 0)
  44 #define HAVE_INT8_T
  45 #endif
  46 #if (SIZEOF_INT16_T != 0)
  47 #define HAVE_INT16_T
  48 #endif
  49 #if (SIZEOF_INT32_T != 0)
  50 #define HAVE_INT32_T
  51 #endif
  52 #if (SIZEOF_INT64_T != 0)
  53 #define HAVE_INT64_T
  54 #endif
  55 #if (SIZEOF_UINT8_T != 0)
  56 #define HAVE_UINT8_T
  57 #endif
  58 #if (SIZEOF_UINT16_T != 0)
  59 #define HAVE_UINT16_T
  60 #endif
  61 #if (SIZEOF_UINT32_T != 0)
  62 #define HAVE_UINT32_T
  63 #endif
  64 #if (SIZEOF_UINT64_T != 0)
  65 #define HAVE_UINT64_T
  66 #endif
  67 #if (SIZEOF_INTPTR_T != 0)
  68 #define HAVE_INTPTR_T
  69 #endif
  70 #if (SIZEOF_UINTPTR_T != 0)
  71 #define HAVE_UINTPTR_T
  72 #endif
  73
  74 #if (SIZEOF_CHAR == 1)
  75 #ifndef HAVE_INT8_T
  76 typedef signed char int8_t;
  77 #define HAVE_INT8_T
  78 #endif
  79 #ifndef HAVE_UINT8_T
  80 typedef unsigned char uint8_t;
  81 #define HAVE_UINT8_T
  82 #endif
  83 #endif
  84
  85 #if (SIZEOF_SHORT == 2)
  86 #ifndef HAVE_INT16_T
  87 typedef signed short int16_t;
  88 #define HAVE_INT16_T
  89 #endif
  90 #ifndef HAVE_UINT16_T
  91 typedef unsigned short uint16_t;
  92 #define HAVE_UINT16_T
  93 #endif
  94 #endif
  95
  96 #if (SIZEOF_INT == 2)
  97 #ifndef HAVE_INT16_T
  98 typedef signed int int16_t;
  99 #define HAVE_INT16_T
 100 #endif
 101 #ifndef HAVE_UINT16_T
 102 typedef unsigned int uint16_t;
 103 #define HAVE_UINT16_T
 104 #endif
 105 #elif (SIZEOF_INT == 4)
 106 #ifndef HAVE_INT32_T
 107 typedef signed int int32_t;
 108 #define HAVE_INT32_T
 109 #endif
 110 #ifndef HAVE_UINT32_T
 111 typedef unsigned int uint32_t;
 112 #define HAVE_UINT32_T
 113 #endif
 114 #ifndef UINT32_MAX
 115 #define UINT32_MAX 0xffffffffu
 116 #endif
 117 #ifndef INT32_MAX
 118 #define INT32_MAX 0x7fffffffu
 119 #endif
 120 #endif
 121
 122 #ifndef INT32_MIN
 123 #define INT32_MIN (-2147483647-1)
 124 #endif
 125
 126 #if (SIZEOF_LONG == 4)
 127 #ifndef HAVE_INT32_T
 128 typedef signed long int32_t;
 129 #define HAVE_INT32_T
 130 #endif
 131 #ifndef HAVE_UINT32_T
 132 typedef unsigned long uint32_t;
 133 #define HAVE_UINT32_T
 134 #ifndef UINT32_MAX
 135 #define UINT32_MAX 0xfffffffful
 136 #endif
 137 #endif
 138 #elif (SIZEOF_LONG == 8)
 139 #ifndef HAVE_INT64_T
 140 typedef signed long int64_t;
 141 #define HAVE_INT64_T
 142 #endif
 143 #ifndef HAVE_UINT32_T
 144 typedef unsigned long uint64_t;
 145 #define HAVE_UINT32_T
 146 #endif
 147 #ifndef UINT64_MAX
 148 #define UINT64_MAX 0xfffffffffffffffful
 149 #endif
 150 #endif
 151
 152 #if (SIZEOF_LONG_LONG == 8)
 153 #ifndef HAVE_INT64_T
 154 typedef signed long long int64_t;
 155 #define HAVE_INT64_T
 156 #endif
 157 #ifndef HAVE_UINT64_T
 158 typedef unsigned long long uint64_t;
 159 #define HAVE_UINT64_T
 160 #endif
 161 #ifndef UINT64_MAX
 162 #define UINT64_MAX 0xffffffffffffffffull
 163 #endif
 164 #ifndef INT64_MAX
 165 #define INT64_MAX 0x7fffffffffffffffll
 166 #endif
 167 #endif
 168
 169 #if (SIZEOF___INT64 == 8)
 170 #ifndef HAVE_INT64_T
 171 typedef signed __int64 int64_t;
 172 #define HAVE_INT64_T
 173 #endif
 174 #ifndef HAVE_UINT64_T
 175 typedef unsigned __int64 uint64_t;
 176 #define HAVE_UINT64_T
 177 #endif
 178 #ifndef UINT64_MAX
 179 #define UINT64_MAX 0xffffffffffffffffui64
 180 #endif
 181 #ifndef INT64_MAX
 182 #define INT64_MAX 0x7fffffffffffffffi64
 183 #endif
 184 #endif
 185
 186 #ifndef HAVE_SSIZE_T
 187 #if SIZEOF_SIZE_T == 8
 188 typedef int64_t ssize_t;
 189 #elif SIZEOF_SIZE_T == 4
 190 typedef int32_t ssize_t;
 191 #else
 192 #error "Can't define ssize_t."
 193 #endif
 194 #endif
 195
 196 #if (SIZEOF_VOID_P > 4 && SIZEOF_VOID_P <= 8)
 197 #ifndef HAVE_INTPTR_T
 198 typedef int64_t intptr_t;
 199 #endif
 200 #ifndef HAVE_UINTPTR_T
 201 typedef uint64_t uintptr_t;
 202 #endif
 203 #elif (SIZEOF_VOID_P > 2 && SIZEOF_VOID_P <= 4)
 204 #ifndef HAVE_INTPTR_T
 205 typedef int32_t intptr_t;
 206 #endif
 207 #ifndef HAVE_UINTPTR_T
 208 typedef uint32_t uintptr_t;
 209 #endif
 210 #else
 211 #error "void * is either >8 bytes or <= 2.  In either case, I am confused."
 212 #endif
 213
 214 #ifndef HAVE_INT8_T
 215 #error "Missing type int8_t"
 216 #endif
 217 #ifndef HAVE_UINT8_T
 218 #error "Missing type uint8_t"
 219 #endif
 220 #ifndef HAVE_INT16_T
 221 #error "Missing type int16_t"
 222 #endif
 223 #ifndef HAVE_UINT16_T
 224 #error "Missing type uint16_t"
 225 #endif
 226 #ifndef HAVE_INT32_T
 227 #error "Missing type int32_t"
 228 #endif
 229 #ifndef HAVE_UINT32_T
 230 #error "Missing type uint32_t"
 231 #endif
 232 #ifndef HAVE_INT64_T
 233 #error "Missing type int64_t"
 234 #endif
 235 #ifndef HAVE_UINT64_T
 236 #error "Missing type uint64_t"
 237 #endif
 238
 239 /* This assumes a sane (2's-complement) representation.  But if you
 240  * aren't 2's complement, and you don't define LONG_MAX, then you're so
 241  * bizarre that I want nothing to do with you. */
 242 #ifndef USING_TWOS_COMPLEMENT
 243 #error "Seems that your platform doesn't use 2's complement arithmetic. Argh."
 244 #endif
 245 #ifndef LONG_MAX
 246 #if (SIZEOF_LONG == 4)
 247 #define LONG_MAX 0x7fffffffL
 248 #elif (SIZEOF_LONG == 8)
 249 #define LONG_MAX 0x7fffffffffffffffL
 250 #else
 251 #error "Can't define LONG_MAX"
 252 #endif
 253 #endif
 254
 255 #ifndef INT_MAX
 256 #if (SIZEOF_INT == 4)
 257 #define INT_MAX 0x7fffffffL
 258 #elif (SIZEOF_INT == 8)
 259 #define INT_MAX 0x7fffffffffffffffL
 260 #else
 261 #error "Can't define INT_MAX"
 262 #endif
 263 #endif
 264
 265 #ifndef UINT_MAX
 266 #if (SIZEOF_INT == 2)
 267 #define UINT_MAX 0xffffu
 268 #elif (SIZEOF_INT == 4)
 269 #define UINT_MAX 0xffffffffu
 270 #elif (SIZEOF_INT == 8)
 271 #define UINT_MAX 0xffffffffffffffffu
 272 #else
 273 #error "Can't define UINT_MAX"
 274 #endif
 275 #endif
 276
 277 #ifndef SHORT_MAX
 278 #if (SIZEOF_SHORT == 2)
 279 #define SHORT_MAX 0x7fff
 280 #elif (SIZEOF_SHORT == 4)
 281 #define SHORT_MAX 0x7fffffff
 282 #else
 283 #error "Can't define SHORT_MAX"
 284 #endif
 285 #endif
 286
 287 #ifndef TIME_MAX
 288
 289 #ifdef TIME_T_IS_SIGNED
 290
 291 #if (SIZEOF_TIME_T == SIZEOF_INT)
 292 #define TIME_MAX ((time_t)INT_MAX)
 293 #elif (SIZEOF_TIME_T == SIZEOF_LONG)
 294 #define TIME_MAX ((time_t)LONG_MAX)
 295 #elif (SIZEOF_TIME_T == 8)
 296 #define TIME_MAX ((time_t)INT64_MAX)
 297 #else
 298 #error "Can't define (signed) TIME_MAX"
 299 #endif
 300
 301 #else
 302 /* Unsigned case */
 303 #if (SIZEOF_TIME_T == 4)
 304 #define TIME_MAX ((time_t)UINT32_MAX)
 305 #elif (SIZEOF_TIME_T == 8)
 306 #define TIME_MAX ((time_t)UINT64_MAX)
 307 #else
 308 #error "Can't define (unsigned) TIME_MAX"
 309 #endif
 310 #endif /* time_t_is_signed */
 311 #endif /* ifndef(TIME_MAX) */
 312
 313 #ifndef SIZE_T_MAX
 314 #if (SIZEOF_SIZE_T == 4)
 315 #define SIZE_T_MAX UINT32_MAX
 316 #elif (SIZEOF_SIZE_T == 8)
 317 #define SIZE_T_MAX UINT64_MAX
 318 #else
 319 #error "Can't define SIZE_T_MAX"
 320 #endif
 321 #endif
 322
 323 #ifndef SSIZE_T_MAX
 324 #if (SIZEOF_SIZE_T == 4)
 325 #define SSIZE_T_MAX INT32_MAX
 326 #elif (SIZEOF_SIZE_T == 8)
 327 #define SSIZE_T_MAX INT64_MAX
 328 #else
 329 #error "Can't define SSIZE_T_MAX"
 330 #endif
 331 #endif
 332
 333 /* Any size_t larger than this amount is likely to be an underflow. */
 334 #define SIZE_T_CEILING (sizeof(char)<<(sizeof(size_t)*8 - 1))
 335
 336 #endif /* __TORINT_H */
 337