src/common/torint.h

   1 /* Copyright (c) 2003, Roger Dingledine
   2  * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
   3  * Copyright (c) 2007-2011, 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  30   /* FreeBSD has a bug where it complains that this file is obsolete,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 UINT16_MAX
 115 #define UINT16_MAX 0xffffu
 116 #endif
 117 #ifndef INT16_MAX
 118 #define INT16_MAX 0x7fff
 119 #endif
 120 #ifndef INT16_MIN
 121 #define INT16_MIN (-INT16_MAX-1)
 122 #endif
 123 #ifndef UINT32_MAX
 124 #define UINT32_MAX 0xffffffffu
 125 #endif
 126 #ifndef INT32_MAX
 127 #define INT32_MAX 0x7fffffff
 128 #endif
 129 #ifndef INT32_MIN
 130 #define INT32_MIN (-2147483647-1)
 131 #endif
 132 #endif
 133
 134 #if (SIZEOF_LONG == 4)
 135 #ifndef HAVE_INT32_T
 136 typedef signed long int32_t;
 137 #define HAVE_INT32_T
 138 #endif
 139 #ifndef HAVE_UINT32_T
 140 typedef unsigned long uint32_t;
 141 #define HAVE_UINT32_T
 142 #ifndef UINT32_MAX
 143 #define UINT32_MAX 0xfffffffful
 144 #endif
 145 #endif
 146 #elif (SIZEOF_LONG == 8)
 147 #ifndef HAVE_INT64_T
 148 typedef signed long int64_t;
 149 #define HAVE_INT64_T
 150 #endif
 151 #ifndef HAVE_UINT32_T
 152 typedef unsigned long uint64_t;
 153 #define HAVE_UINT32_T
 154 #endif
 155 #ifndef UINT64_MAX
 156 #define UINT64_MAX 0xfffffffffffffffful
 157 #endif
 158 #endif
 159
 160 #if (SIZEOF_LONG_LONG == 8)
 161 #ifndef HAVE_INT64_T
 162 typedef signed long long int64_t;
 163 #define HAVE_INT64_T
 164 #endif
 165 #ifndef HAVE_UINT64_T
 166 typedef unsigned long long uint64_t;
 167 #define HAVE_UINT64_T
 168 #endif
 169 #ifndef UINT64_MAX
 170 #define UINT64_MAX 0xffffffffffffffffull
 171 #endif
 172 #ifndef INT64_MAX
 173 #define INT64_MAX 0x7fffffffffffffffll
 174 #endif
 175 #endif
 176
 177 #if (SIZEOF___INT64 == 8)
 178 #ifndef HAVE_INT64_T
 179 typedef signed __int64 int64_t;
 180 #define HAVE_INT64_T
 181 #endif
 182 #ifndef HAVE_UINT64_T
 183 typedef unsigned __int64 uint64_t;
 184 #define HAVE_UINT64_T
 185 #endif
 186 #ifndef UINT64_MAX
 187 #define UINT64_MAX 0xffffffffffffffffui64
 188 #endif
 189 #ifndef INT64_MAX
 190 #define INT64_MAX 0x7fffffffffffffffi64
 191 #endif
 192 #endif
 193
 194 #ifndef HAVE_SSIZE_T
 195 #if SIZEOF_SIZE_T == 8
 196 typedef int64_t ssize_t;
 197 #elif SIZEOF_SIZE_T == 4
 198 typedef int32_t ssize_t;
 199 #else
 200 #error "Can't define ssize_t."
 201 #endif
 202 #endif
 203
 204 #if (SIZEOF_VOID_P > 4 && SIZEOF_VOID_P <= 8)
 205 #ifndef HAVE_INTPTR_T
 206 typedef int64_t intptr_t;
 207 #endif
 208 #ifndef HAVE_UINTPTR_T
 209 typedef uint64_t uintptr_t;
 210 #endif
 211 #elif (SIZEOF_VOID_P > 2 && SIZEOF_VOID_P <= 4)
 212 #ifndef HAVE_INTPTR_T
 213 typedef int32_t intptr_t;
 214 #endif
 215 #ifndef HAVE_UINTPTR_T
 216 typedef uint32_t uintptr_t;
 217 #endif
 218 #else
 219 #error "void * is either >8 bytes or <= 2.  In either case, I am confused."
 220 #endif
 221
 222 #ifndef HAVE_INT8_T
 223 #error "Missing type int8_t"
 224 #endif
 225 #ifndef HAVE_UINT8_T
 226 #error "Missing type uint8_t"
 227 #endif
 228 #ifndef HAVE_INT16_T
 229 #error "Missing type int16_t"
 230 #endif
 231 #ifndef HAVE_UINT16_T
 232 #error "Missing type uint16_t"
 233 #endif
 234 #ifndef HAVE_INT32_T
 235 #error "Missing type int32_t"
 236 #endif
 237 #ifndef HAVE_UINT32_T
 238 #error "Missing type uint32_t"
 239 #endif
 240 #ifndef HAVE_INT64_T
 241 #error "Missing type int64_t"
 242 #endif
 243 #ifndef HAVE_UINT64_T
 244 #error "Missing type uint64_t"
 245 #endif
 246
 247 /* This assumes a sane (2's-complement) representation.  But if you
 248  * aren't 2's complement, and you don't define LONG_MAX, then you're so
 249  * bizarre that I want nothing to do with you. */
 250 #ifndef USING_TWOS_COMPLEMENT
 251 #error "Seems that your platform doesn't use 2's complement arithmetic. Argh."
 252 #endif
 253 #ifndef LONG_MAX
 254 #if (SIZEOF_LONG == 4)
 255 #define LONG_MAX 0x7fffffffL
 256 #elif (SIZEOF_LONG == 8)
 257 #define LONG_MAX 0x7fffffffffffffffL
 258 #else
 259 #error "Can't define LONG_MAX"
 260 #endif
 261 #endif
 262
 263 #ifndef INT_MAX
 264 #if (SIZEOF_INT == 4)
 265 #define INT_MAX 0x7fffffffL
 266 #elif (SIZEOF_INT == 8)
 267 #define INT_MAX 0x7fffffffffffffffL
 268 #else
 269 #error "Can't define INT_MAX"
 270 #endif
 271 #endif
 272
 273 #ifndef UINT_MAX
 274 #if (SIZEOF_INT == 2)
 275 #define UINT_MAX 0xffffu
 276 #elif (SIZEOF_INT == 4)
 277 #define UINT_MAX 0xffffffffu
 278 #elif (SIZEOF_INT == 8)
 279 #define UINT_MAX 0xffffffffffffffffu
 280 #else
 281 #error "Can't define UINT_MAX"
 282 #endif
 283 #endif
 284
 285 #ifndef SHORT_MAX
 286 #if (SIZEOF_SHORT == 2)
 287 #define SHORT_MAX 0x7fff
 288 #elif (SIZEOF_SHORT == 4)
 289 #define SHORT_MAX 0x7fffffff
 290 #else
 291 #error "Can't define SHORT_MAX"
 292 #endif
 293 #endif
 294
 295 #ifndef TIME_MAX
 296
 297 #ifdef TIME_T_IS_SIGNED
 298
 299 #if (SIZEOF_TIME_T == SIZEOF_INT)
 300 #define TIME_MAX ((time_t)INT_MAX)
 301 #elif (SIZEOF_TIME_T == SIZEOF_LONG)
 302 #define TIME_MAX ((time_t)LONG_MAX)
 303 #elif (SIZEOF_TIME_T == 8)
 304 #define TIME_MAX ((time_t)INT64_MAX)
 305 #else
 306 #error "Can't define (signed) TIME_MAX"
 307 #endif
 308
 309 #else
 310 /* Unsigned case */
 311 #if (SIZEOF_TIME_T == 4)
 312 #define TIME_MAX ((time_t)UINT32_MAX)
 313 #elif (SIZEOF_TIME_T == 8)
 314 #define TIME_MAX ((time_t)UINT64_MAX)
 315 #else
 316 #error "Can't define (unsigned) TIME_MAX"
 317 #endif
 318 #endif /* time_t_is_signed */
 319 #endif /* ifndef(TIME_MAX) */
 320
 321 #ifndef SIZE_T_MAX
 322 #if (SIZEOF_SIZE_T == 4)
 323 #define SIZE_T_MAX UINT32_MAX
 324 #elif (SIZEOF_SIZE_T == 8)
 325 #define SIZE_T_MAX UINT64_MAX
 326 #else
 327 #error "Can't define SIZE_T_MAX"
 328 #endif
 329 #endif
 330
 331 #ifndef SSIZE_T_MAX
 332 #if (SIZEOF_SIZE_T == 4)
 333 #define SSIZE_T_MAX INT32_MAX
 334 #elif (SIZEOF_SIZE_T == 8)
 335 #define SSIZE_T_MAX INT64_MAX
 336 #else
 337 #error "Can't define SSIZE_T_MAX"
 338 #endif
 339 #endif
 340
 341 /** Any ssize_t larger than this amount is likely to be an underflow. */
 342 #define SSIZE_T_CEILING ((ssize_t)(SSIZE_T_MAX-16))
 343 /** Any size_t larger than this amount is likely to be an underflow. */
 344 #define SIZE_T_CEILING  ((size_t)(SSIZE_T_MAX-16))
 345
 346 #endif /* __TORINT_H */
 347