src/stdafx.h

   1 /* $Id$ */
   2
   3 /*
   4  * This file is part of OpenTTD.
   5  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
   6  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   7  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
   8  */
   9
  10 /** @file stdafx.h Definition of base types and functions in a cross-platform compatible way. */
  11
  12 #ifndef STDAFX_H
  13 #define STDAFX_H
  14
  15 #include <algorithm>
  16 #include <cmath>
  17 #include <deque>
  18 #include <list>
  19 #include <numeric>
  20 #include <queue>
  21 #include <string>
  22 #include <vector>
  23
  24 #if defined(__APPLE__)
  25         #include "os/macosx/osx_stdafx.h"
  26 #endif /* __APPLE__ */
  27
  28 #if defined(__BEOS__) || defined(__HAIKU__)
  29         #include <SupportDefs.h>
  30         #include <unistd.h>
  31         #define _GNU_SOURCE
  32         #define TROUBLED_INTS
  33         #include <strings.h>
  34 #elif defined(__NDS__)
  35         #include <nds/jtypes.h>
  36         #define TROUBLED_INTS
  37 #endif
  38
  39 /* It seems that we need to include stdint.h before anything else
  40  * We need INT64_MAX, which for most systems comes from stdint.h. However, MSVC
  41  * does not have stdint.h and apparently neither does MorphOS.
  42  * For OSX the inclusion is already done in osx_stdafx.h. */
  43 #if !defined(__APPLE__) && (!defined(_MSC_VER) || _MSC_VER >= 1600) && !defined(__MORPHOS__)
  44         #if defined(SUNOS)
  45                 /* SunOS/Solaris does not have stdint.h, but inttypes.h defines everything
  46                  * stdint.h defines and we need. */
  47                 #include <inttypes.h>
  48         #else
  49                 #define __STDC_LIMIT_MACROS
  50                 #include <stdint.h>
  51         #endif
  52 #endif
  53
  54 /* The conditions for these constants to be available are way too messy; so check them one by one */
  55 #if !defined(UINT64_MAX)
  56         #define UINT64_MAX (18446744073709551615ULL)
  57 #endif
  58 #if !defined(INT64_MAX)
  59         #define INT64_MAX  (9223372036854775807LL)
  60 #endif
  61 #if !defined(INT64_MIN)
  62         #define INT64_MIN  (-INT64_MAX - 1)
  63 #endif
  64 #if !defined(UINT32_MAX)
  65         #define UINT32_MAX (4294967295U)
  66 #endif
  67 #if !defined(INT32_MAX)
  68         #define INT32_MAX  (2147483647)
  69 #endif
  70 #if !defined(INT32_MIN)
  71         #define INT32_MIN  (-INT32_MAX - 1)
  72 #endif
  73 #if !defined(UINT16_MAX)
  74         #define UINT16_MAX (65535U)
  75 #endif
  76 #if !defined(INT16_MAX)
  77         #define INT16_MAX  (32767)
  78 #endif
  79 #if !defined(INT16_MIN)
  80         #define INT16_MIN  (-INT16_MAX - 1)
  81 #endif
  82 #if !defined(UINT8_MAX)
  83         #define UINT8_MAX  (255)
  84 #endif
  85 #if !defined(INT8_MAX)
  86         #define INT8_MAX   (127)
  87 #endif
  88 #if !defined(INT8_MIN)
  89         #define INT8_MIN   (-INT8_MAX - 1)
  90 #endif
  91
  92 #include <cstdio>
  93 #include <cstddef>
  94 #include <cstring>
  95 #include <cstdlib>
  96 #include <climits>
  97 #include <cassert>
  98
  99 #ifndef SIZE_MAX
 100         #define SIZE_MAX ((size_t)-1)
 101 #endif
 102
 103 #if defined(UNIX) || defined(__MINGW32__)
 104         #include <sys/types.h>
 105 #endif
 106
 107 #if defined(__OS2__)
 108         #include <types.h>
 109         #define strcasecmp stricmp
 110 #endif
 111
 112 #if defined(PSP)
 113         #include <psptypes.h>
 114         #include <pspdebug.h>
 115         #include <pspthreadman.h>
 116 #endif
 117
 118 #if defined(SUNOS) || defined(HPUX)
 119         #include <alloca.h>
 120 #endif
 121
 122 #if defined(__MORPHOS__)
 123         /* MorphOS defines certain Amiga defines per default, we undefine them
 124          * here to make the rest of source less messy and more clear what is
 125          * required for morphos and what for AmigaOS */
 126         #if defined(amigaos)
 127                 #undef amigaos
 128         #endif
 129         #if defined(__amigaos__)
 130                 #undef __amigaos__
 131         # endif
 132         #if defined(__AMIGA__)
 133                 #undef __AMIGA__
 134         #endif
 135         #if defined(AMIGA)
 136                 #undef AMIGA
 137         #endif
 138         #if defined(amiga)
 139                 #undef amiga
 140         #endif
 141         /* Act like we already included this file, as it somehow gives linkage problems
 142          *  (mismatch linkage of C++ and C between this include and unistd.h). */
 143         #define CLIB_USERGROUP_PROTOS_H
 144 #endif /* __MORPHOS__ */
 145
 146 #if defined(PSP)
 147         /* PSP can only have 10 file-descriptors open at any given time, but this
 148          *  switch only limits reads via the Fio system. So keep 2 fds free for things
 149          *  like saving a game. */
 150         #define LIMITED_FDS 8
 151         #define printf pspDebugScreenPrintf
 152 #endif /* PSP */
 153
 154 /* Stuff for GCC */
 155 #if defined(__GNUC__)
 156         #define NORETURN __attribute__ ((noreturn))
 157         #define CDECL
 158         #define __int64 long long
 159         #define GCC_PACK __attribute__((packed))
 160         /* Warn about functions using 'printf' format syntax. First argument determines which parameter
 161          * is the format string, second argument is start of values passed to printf. */
 162         #define WARN_FORMAT(string, args) __attribute__ ((format (printf, string, args)))
 163         #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7)
 164                 #define FINAL final
 165         #else
 166                 #define FINAL
 167         #endif
 168
 169         /* Use fallthrough attribute where supported */
 170         #if __GNUC__ >= 7
 171                 #if __cplusplus > 201402L // C++17
 172                         #define FALLTHROUGH [[fallthrough]]
 173                 #else
 174                         #define FALLTHROUGH __attribute__((fallthrough))
 175                 #endif
 176         #else
 177                 #define FALLTHROUGH
 178         #endif
 179 #endif /* __GNUC__ */
 180
 181 #if defined(__WATCOMC__)
 182         #define NORETURN
 183         #define CDECL
 184         #define GCC_PACK
 185         #define WARN_FORMAT(string, args)
 186         #define FINAL
 187         #define FALLTHROUGH
 188         #include <malloc.h>
 189 #endif /* __WATCOMC__ */
 190
 191 #if defined(__MINGW32__) || defined(__CYGWIN__)
 192         #include <malloc.h> // alloca()
 193 #endif
 194
 195 #if defined(WIN32)
 196         #define WIN32_LEAN_AND_MEAN     // Exclude rarely-used stuff from Windows headers
 197 #endif
 198
 199 /* Stuff for MSVC */
 200 #if defined(_MSC_VER)
 201         #pragma once
 202         #ifdef _WIN64
 203                 /* No 64-bit Windows below XP, so we can safely assume it as the target platform. */
 204                 #define NTDDI_VERSION NTDDI_WINXP // Windows XP
 205                 #define _WIN32_WINNT 0x501        // Windows XP
 206                 #define _WIN32_WINDOWS 0x501      // Windows XP
 207                 #define WINVER 0x0501             // Windows XP
 208                 #define _WIN32_IE_ 0x0600         // 6.0 (XP+)
 209         #else
 210                 /* Define a win32 target platform, to override defaults of the SDK
 211                  * We need to define NTDDI version for Vista SDK, but win2k is minimum */
 212                 #define NTDDI_VERSION NTDDI_WIN2K // Windows 2000
 213                 #define _WIN32_WINNT 0x0500       // Windows 2000
 214                 #define _WIN32_WINDOWS 0x400      // Windows 95
 215                 #if !defined(WINCE)
 216                         #define WINVER 0x0400     // Windows NT 4.0 / Windows 95
 217                 #endif
 218                 #define _WIN32_IE_ 0x0401         // 4.01 (win98 and NT4SP5+)
 219         #endif
 220         #define NOMINMAX                // Disable min/max macros in windows.h.
 221
 222         #pragma warning(disable: 4244)  // 'conversion' conversion from 'type1' to 'type2', possible loss of data
 223         #pragma warning(disable: 4761)  // integral size mismatch in argument : conversion supplied
 224         #pragma warning(disable: 4200)  // nonstandard extension used : zero-sized array in struct/union
 225         #pragma warning(disable: 4355)  // 'this' : used in base member initializer list
 226
 227         #if (_MSC_VER < 1400)                   // MSVC 2005 safety checks
 228                 #error "Only MSVC 2005 or higher are supported. MSVC 2003 and earlier are not! Upgrade your compiler."
 229         #endif /* (_MSC_VER < 1400) */
 230         #pragma warning(disable: 4291)   // no matching operator delete found; memory will not be freed if initialization throws an exception (reason: our overloaded functions never throw an exception)
 231         #pragma warning(disable: 4996)   // 'function': was declared deprecated
 232         #define _CRT_SECURE_NO_DEPRECATE // all deprecated 'unsafe string functions
 233         #pragma warning(disable: 6308)   // code analyzer: 'realloc' might return null pointer: assigning null pointer to 't_ptr', which is passed as an argument to 'realloc', will cause the original memory block to be leaked
 234         #pragma warning(disable: 6011)   // code analyzer: Dereferencing nullptr pointer 'pfGetAddrInfo': Lines: 995, 996, 998, 999, 1001
 235         #pragma warning(disable: 6326)   // code analyzer: potential comparison of a constant with another constant
 236         #pragma warning(disable: 6031)   // code analyzer: Return value ignored: 'ReadFile'
 237         #pragma warning(disable: 6255)   // code analyzer: _alloca indicates failure by raising a stack overflow exception. Consider using _malloca instead
 238         #pragma warning(disable: 6246)   // code analyzer: Local declaration of 'statspec' hides declaration of the same name in outer scope. For additional information, see previous declaration at ...
 239
 240         #if (_MSC_VER == 1500)           // Addresses item #13 on http://blogs.msdn.com/b/vcblog/archive/2008/08/11/tr1-fixes-in-vc9-sp1.aspx, for Visual Studio 2008
 241                 #define _DO_NOT_DECLARE_INTERLOCKED_INTRINSICS_IN_MEMORY
 242                 #include <intrin.h>
 243         #endif
 244
 245         #include <malloc.h> // alloca()
 246         #define NORETURN __declspec(noreturn)
 247         #if (_MSC_VER < 1900)
 248                 #define inline __forceinline
 249         #endif
 250
 251         #if !defined(WINCE)
 252                 #define CDECL _cdecl
 253         #endif
 254
 255         #define GCC_PACK
 256         #define WARN_FORMAT(string, args)
 257         #define FINAL sealed
 258
 259         /* fallthrough attribute, VS 2017 */
 260         #if (_MSC_VER >= 1910)
 261                 #define FALLTHROUGH [[fallthrough]]
 262         #else
 263                 #define FALLTHROUGH
 264         #endif
 265
 266         #if defined(WINCE)
 267                 int CDECL vsnprintf(char *str, size_t size, const char *format, va_list ap);
 268         #endif
 269
 270         #if defined(WIN32) && !defined(_WIN64) && !defined(WIN64)
 271                 #if !defined(_W64)
 272                         #define _W64
 273                 #endif
 274
 275                 typedef _W64 int INT_PTR, *PINT_PTR;
 276                 typedef _W64 unsigned int UINT_PTR, *PUINT_PTR;
 277         #endif /* WIN32 && !_WIN64 && !WIN64 */
 278
 279         #if defined(_WIN64) || defined(WIN64)
 280                 #define fseek _fseeki64
 281         #endif /* _WIN64 || WIN64 */
 282
 283         /* This is needed to zlib uses the stdcall calling convention on visual studio */
 284         #if defined(WITH_ZLIB) || defined(WITH_PNG)
 285                 #if !defined(ZLIB_WINAPI)
 286                         #define ZLIB_WINAPI
 287                 #endif
 288         #endif
 289
 290         #if defined(WINCE)
 291                 #define strcasecmp _stricmp
 292                 #define strncasecmp _strnicmp
 293                 #undef DEBUG
 294         #else
 295                 #define strcasecmp stricmp
 296                 #define strncasecmp strnicmp
 297         #endif
 298
 299         #define strtoull _strtoui64
 300
 301         /* MSVC doesn't have these :( */
 302         #define S_ISDIR(mode) (mode & S_IFDIR)
 303         #define S_ISREG(mode) (mode & S_IFREG)
 304
 305 #endif /* defined(_MSC_VER) */
 306
 307 #if defined(DOS)
 308         /* The DOS port does not have all signals/signal functions. */
 309         #define strsignal(sig) ""
 310         /* Use 'no floating point' for bus errors; SIGBUS does not exist
 311          * for DOS, SIGNOFP for other platforms. So it's fairly safe
 312          * to interchange those. */
 313         #define SIGBUS SIGNOFP
 314 #endif
 315
 316 #if defined(WINCE)
 317         #define stredup _stredup
 318 #endif /* WINCE */
 319
 320 /* NOTE: the string returned by these functions is only valid until the next
 321  * call to the same function and is not thread- or reentrancy-safe */
 322 #if !defined(STRGEN) && !defined(SETTINGSGEN)
 323         #if defined(WIN32) || defined(WIN64)
 324                 char *getcwd(char *buf, size_t size);
 325                 #include <tchar.h>
 326                 #include <io.h>
 327
 328                 /* XXX - WinCE without MSVCRT doesn't support wfopen, so it seems */
 329                 #if !defined(WINCE)
 330                         namespace std { using ::_tfopen; }
 331                         #define fopen(file, mode) _tfopen(OTTD2FS(file), _T(mode))
 332                         #define unlink(file) _tunlink(OTTD2FS(file))
 333                 #endif /* WINCE */
 334
 335                 const char *FS2OTTD(const TCHAR *name);
 336                 const TCHAR *OTTD2FS(const char *name, bool console_cp = false);
 337         #else
 338                 #define fopen(file, mode) fopen(OTTD2FS(file), mode)
 339                 const char *FS2OTTD(const char *name);
 340                 const char *OTTD2FS(const char *name);
 341         #endif /* WIN32 */
 342 #endif /* STRGEN || SETTINGSGEN */
 343
 344 #if defined(WIN32) || defined(WIN64) || defined(__OS2__) && !defined(__INNOTEK_LIBC__)
 345         #define PATHSEP "\\"
 346         #define PATHSEPCHAR '\\'
 347 #else
 348         #define PATHSEP "/"
 349         #define PATHSEPCHAR '/'
 350 #endif
 351
 352 /* MSVCRT of course has to have a different syntax for long long *sigh* */
 353 #if defined(_MSC_VER) || defined(__MINGW32__)
 354         #define OTTD_PRINTF64 "%I64d"
 355         #define OTTD_PRINTF64U "%I64u"
 356         #define OTTD_PRINTFHEX64 "%I64x"
 357         #define PRINTF_SIZE "%Iu"
 358 #else
 359         #define OTTD_PRINTF64 "%lld"
 360         #define OTTD_PRINTF64U "%llu"
 361         #define OTTD_PRINTFHEX64 "%llx"
 362         #define PRINTF_SIZE "%zu"
 363 #endif
 364
 365 typedef unsigned char byte;
 366
 367 /* This is already defined in unix, but not in QNX Neutrino (6.x)*/
 368 #if (!defined(UNIX) && !defined(__CYGWIN__) && !defined(__BEOS__) && !defined(__HAIKU__) && !defined(__MORPHOS__)) || defined(__QNXNTO__)
 369         typedef unsigned int uint;
 370 #endif
 371
 372 #if defined(TROUBLED_INTS)
 373         /* NDS'/BeOS'/Haiku's types for uint32/int32 are based on longs, which causes
 374          * trouble all over the place in OpenTTD. */
 375         #define uint32 uint32_ugly_hack
 376         #define int32 int32_ugly_hack
 377         typedef unsigned int uint32_ugly_hack;
 378         typedef signed int int32_ugly_hack;
 379 #else
 380         typedef unsigned char    uint8;
 381         typedef   signed char     int8;
 382         typedef unsigned short   uint16;
 383         typedef   signed short    int16;
 384         typedef unsigned int     uint32;
 385         typedef   signed int      int32;
 386         typedef unsigned __int64 uint64;
 387         typedef   signed __int64  int64;
 388 #endif /* !TROUBLED_INTS */
 389
 390 #if !defined(WITH_PERSONAL_DIR)
 391         #define PERSONAL_DIR ""
 392 #endif
 393
 394 /* Compile time assertions. Prefer c++0x static_assert().
 395  * Older compilers cannot evaluate some expressions at compile time,
 396  * typically when templates are involved, try assert_tcompile() in those cases. */
 397 #if defined(__STDCXX_VERSION__) || defined(__GXX_EXPERIMENTAL_CXX0X__) || defined(__GXX_EXPERIMENTAL_CPP0X__) || defined(static_assert) || (defined(_MSC_VER) && _MSC_VER >= 1600)
 398 #define assert_compile(expr) static_assert(expr, #expr )
 399 #define assert_tcompile(expr) assert_compile(expr)
 400         /* __STDCXX_VERSION__ is c++0x feature macro, __GXX_EXPERIMENTAL_CXX0X__ is used by gcc, __GXX_EXPERIMENTAL_CPP0X__ by icc */
 401         #define assert_compile(expr) static_assert(expr, #expr )
 402         #define assert_tcompile(expr) assert_compile(expr)
 403 #elif defined(__OS2__)
 404         /* Disabled for OS/2 */
 405         #define assert_compile(expr)
 406         #define assert_tcompile(expr) assert_compile(expr)
 407 #else
 408         #define assert_compile(expr) typedef int __ct_assert__[1 - 2 * !(expr)]
 409         #define assert_tcompile(expr) assert(expr)
 410 #endif
 411
 412 /* Check if the types have the bitsizes like we are using them */
 413 assert_compile(sizeof(uint64) == 8);
 414 assert_compile(sizeof(uint32) == 4);
 415 assert_compile(sizeof(uint16) == 2);
 416 assert_compile(sizeof(uint8)  == 1);
 417 assert_compile(SIZE_MAX >= UINT32_MAX);
 418
 419 #ifndef M_PI_2
 420 #define M_PI_2 1.57079632679489661923
 421 #define M_PI   3.14159265358979323846
 422 #endif /* M_PI_2 */
 423
 424 /**
 425  * Return the length of an fixed size array.
 426  * Unlike sizeof this function returns the number of elements
 427  * of the given type.
 428  *
 429  * @param x The pointer to the first element of the array
 430  * @return The number of elements
 431  */
 432 #define lengthof(x) (sizeof(x) / sizeof(x[0]))
 433
 434 /**
 435  * Get the end element of an fixed size array.
 436  *
 437  * @param x The pointer to the first element of the array
 438  * @return The pointer past to the last element of the array
 439  */
 440 #define endof(x) (&x[lengthof(x)])
 441
 442 /**
 443  * Get the last element of an fixed size array.
 444  *
 445  * @param x The pointer to the first element of the array
 446  * @return The pointer to the last element of the array
 447  */
 448 #define lastof(x) (&x[lengthof(x) - 1])
 449
 450 #define cpp_offsetof(s, m)   (((size_t)&reinterpret_cast<const volatile char&>((((s*)(char*)8)->m))) - 8)
 451 #if !defined(offsetof)
 452         #define offsetof(s, m) cpp_offsetof(s, m)
 453 #endif /* offsetof */
 454
 455 /**
 456  * Gets the size of a variable within a class.
 457  * @param base     The class the variable is in.
 458  * @param variable The variable to get the size of.
 459  * @return the size of the variable
 460  */
 461 #define cpp_sizeof(base, variable) (sizeof(((base*)8)->variable))
 462
 463 /**
 464  * Gets the length of an array variable within a class.
 465  * @param base     The class the variable is in.
 466  * @param variable The array variable to get the size of.
 467  * @return the length of the array
 468  */
 469 #define cpp_lengthof(base, variable) (cpp_sizeof(base, variable) / cpp_sizeof(base, variable[0]))
 470
 471
 472 /* take care of some name clashes on MacOS */
 473 #if defined(__APPLE__)
 474         #define GetString OTTD_GetString
 475         #define DrawString OTTD_DrawString
 476         #define CloseConnection OTTD_CloseConnection
 477 #endif /* __APPLE__ */
 478
 479 #ifdef __GNUC__
 480         #define likely(x)       __builtin_expect(!!(x), 1)
 481         #define unlikely(x)     __builtin_expect(!!(x), 0)
 482 #else
 483         #define likely(x)       (x)
 484         #define unlikely(x)     (x)
 485 #endif
 486
 487 void NORETURN CDECL usererror(const char *str, ...) WARN_FORMAT(1, 2);
 488 void NORETURN CDECL error(const char *str, ...) WARN_FORMAT(1, 2);
 489 void NORETURN CDECL assert_msg_error(int line, const char *file, const char *expr, const char *str, ...) WARN_FORMAT(4, 5);
 490 #define NOT_REACHED() error("NOT_REACHED triggered at line %i of %s", __LINE__, __FILE__)
 491
 492 /* For non-debug builds with assertions enabled use the special assertion handler:
 493  * - For MSVC: NDEBUG is set for all release builds and WITH_ASSERT overrides the disabling of asserts.
 494  * - For non MSVC: NDEBUG is set when assertions are disables, _DEBUG is set for non-release builds.
 495  */
 496 #if (defined(_MSC_VER) && defined(NDEBUG) && defined(WITH_ASSERT)) || (!defined(_MSC_VER) && !defined(NDEBUG) && !defined(_DEBUG))
 497         #undef assert
 498         #define assert(expression) if (unlikely(!(expression))) error("Assertion failed at line %i of %s: %s", __LINE__, __FILE__, #expression);
 499 #endif
 500
 501 /* Asserts are enabled if NDEBUG isn't defined, or if we are using MSVC and WITH_ASSERT is defined. */
 502 #if !defined(NDEBUG) || (defined(_MSC_VER) && defined(WITH_ASSERT))
 503         #define OTTD_ASSERT
 504         #define assert_msg(expression, ...) if (unlikely(!(expression))) assert_msg_error(__LINE__, __FILE__, #expression, __VA_ARGS__);
 505 #else
 506         #define assert_msg(expression, ...)
 507 #endif
 508
 509 #if defined(MORPHOS) || defined(__NDS__) || defined(__DJGPP__)
 510         /* MorphOS and NDS don't have C++ conformant _stricmp... */
 511         #define _stricmp stricmp
 512 #elif defined(OPENBSD)
 513         /* OpenBSD uses strcasecmp(3) */
 514         #define _stricmp strcasecmp
 515 #endif
 516
 517 #if defined(MAX_PATH)
 518         /* It's already defined, no need to override */
 519 #elif defined(PATH_MAX) && PATH_MAX > 0
 520         /* Use the value from PATH_MAX, if it exists */
 521         #define MAX_PATH PATH_MAX
 522 #else
 523         /* If all else fails, hardcode something :( */
 524         #define MAX_PATH 260
 525 #endif
 526
 527 /**
 528  * Version of the standard free that accepts const pointers.
 529  * @param ptr The data to free.
 530  */
 531 static inline void free(const void *ptr)
 532 {
 533         free(const_cast<void *>(ptr));
 534 }
 535
 536 /**
 537  * The largest value that can be entered in a variable
 538  * @param type the type of the variable
 539  */
 540 #define MAX_UVALUE(type) ((type)~(type)0)
 541
 542 #if defined(_MSC_VER) && !defined(_DEBUG)
 543         #define IGNORE_UNINITIALIZED_WARNING_START __pragma(warning(push)) __pragma(warning(disable:4700))
 544         #define IGNORE_UNINITIALIZED_WARNING_STOP __pragma(warning(pop))
 545 #elif defined(__GNUC__) && !defined(_DEBUG)
 546         #define HELPER0(x) #x
 547         #define HELPER1(x) HELPER0(GCC diagnostic ignored x)
 548         #define HELPER2(y) HELPER1(#y)
 549 #if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6))
 550         #define IGNORE_UNINITIALIZED_WARNING_START \
 551                 _Pragma("GCC diagnostic push") \
 552                 _Pragma(HELPER2(-Wuninitialized)) \
 553                 _Pragma(HELPER2(-Wmaybe-uninitialized))
 554         #define IGNORE_UNINITIALIZED_WARNING_STOP _Pragma("GCC diagnostic pop")
 555 #endif
 556 #endif
 557
 558 #ifndef IGNORE_UNINITIALIZED_WARNING_START
 559         #define IGNORE_UNINITIALIZED_WARNING_START
 560         #define IGNORE_UNINITIALIZED_WARNING_STOP
 561 #endif
 562
 563 /**
 564  * Using _mm_prefetch() with gcc implies the compile flag -msse.
 565  * This is not the case with __builtin_prefetch() so the latter can be used in normal .cpp files.
 566  */
 567 #if defined(_MSC_VER)
 568         #define INCLUDE_FOR_PREFETCH_NTA <xmmintrin.h>
 569         #define PREFETCH_NTA(address) _mm_prefetch((const char *) (address), _MM_HINT_NTA);
 570 #elif defined(__GNUC__)
 571         #define INCLUDE_FOR_PREFETCH_NTA "stdafx.h"
 572         #define PREFETCH_NTA(address) __builtin_prefetch((const void *) (address), 0, 0);
 573 #else
 574         #define INCLUDE_FOR_PREFETCH_NTA "stdafx.h"
 575         #define PREFETCH_NTA(address)
 576 #endif
 577
 578 #ifdef __GNUC__
 579 #define likely(x)       __builtin_expect(!!(x), 1)
 580 #define unlikely(x)     __builtin_expect(!!(x), 0)
 581 #else
 582 #define likely(x)       (x)
 583 #define unlikely(x)     (x)
 584 #endif
 585
 586 #endif /* STDAFX_H */