Andrew Hsieh | 83760d2 | 2013-06-18 12:24:28 -0700 | [diff] [blame] | 1 | #ifndef Py_PYPORT_H |
| 2 | #define Py_PYPORT_H |
| 3 | |
| 4 | #include "pyconfig.h" /* include for defines */ |
| 5 | |
| 6 | /* Some versions of HP-UX & Solaris need inttypes.h for int32_t, |
| 7 | INT32_MAX, etc. */ |
| 8 | #ifdef HAVE_INTTYPES_H |
| 9 | #include <inttypes.h> |
| 10 | #endif |
| 11 | |
| 12 | #ifdef HAVE_STDINT_H |
| 13 | #include <stdint.h> |
| 14 | #endif |
| 15 | |
| 16 | /************************************************************************** |
| 17 | Symbols and macros to supply platform-independent interfaces to basic |
| 18 | C language & library operations whose spellings vary across platforms. |
| 19 | |
| 20 | Please try to make documentation here as clear as possible: by definition, |
| 21 | the stuff here is trying to illuminate C's darkest corners. |
| 22 | |
| 23 | Config #defines referenced here: |
| 24 | |
| 25 | SIGNED_RIGHT_SHIFT_ZERO_FILLS |
| 26 | Meaning: To be defined iff i>>j does not extend the sign bit when i is a |
| 27 | signed integral type and i < 0. |
| 28 | Used in: Py_ARITHMETIC_RIGHT_SHIFT |
| 29 | |
| 30 | Py_DEBUG |
| 31 | Meaning: Extra checks compiled in for debug mode. |
| 32 | Used in: Py_SAFE_DOWNCAST |
| 33 | |
| 34 | HAVE_UINTPTR_T |
| 35 | Meaning: The C9X type uintptr_t is supported by the compiler |
| 36 | Used in: Py_uintptr_t |
| 37 | |
| 38 | HAVE_LONG_LONG |
| 39 | Meaning: The compiler supports the C type "long long" |
| 40 | Used in: PY_LONG_LONG |
| 41 | |
| 42 | **************************************************************************/ |
| 43 | |
| 44 | |
| 45 | /* For backward compatibility only. Obsolete, do not use. */ |
| 46 | #ifdef HAVE_PROTOTYPES |
| 47 | #define Py_PROTO(x) x |
| 48 | #else |
| 49 | #define Py_PROTO(x) () |
| 50 | #endif |
| 51 | #ifndef Py_FPROTO |
| 52 | #define Py_FPROTO(x) Py_PROTO(x) |
| 53 | #endif |
| 54 | |
| 55 | /* typedefs for some C9X-defined synonyms for integral types. |
| 56 | * |
| 57 | * The names in Python are exactly the same as the C9X names, except with a |
| 58 | * Py_ prefix. Until C9X is universally implemented, this is the only way |
| 59 | * to ensure that Python gets reliable names that don't conflict with names |
| 60 | * in non-Python code that are playing their own tricks to define the C9X |
| 61 | * names. |
| 62 | * |
| 63 | * NOTE: don't go nuts here! Python has no use for *most* of the C9X |
| 64 | * integral synonyms. Only define the ones we actually need. |
| 65 | */ |
| 66 | |
| 67 | #ifdef HAVE_LONG_LONG |
| 68 | #ifndef PY_LONG_LONG |
| 69 | #define PY_LONG_LONG long long |
| 70 | #if defined(LLONG_MAX) |
| 71 | /* If LLONG_MAX is defined in limits.h, use that. */ |
| 72 | #define PY_LLONG_MIN LLONG_MIN |
| 73 | #define PY_LLONG_MAX LLONG_MAX |
| 74 | #define PY_ULLONG_MAX ULLONG_MAX |
| 75 | #elif defined(__LONG_LONG_MAX__) |
| 76 | /* Otherwise, if GCC has a builtin define, use that. */ |
| 77 | #define PY_LLONG_MAX __LONG_LONG_MAX__ |
| 78 | #define PY_LLONG_MIN (-PY_LLONG_MAX-1) |
| 79 | #define PY_ULLONG_MAX (__LONG_LONG_MAX__*2ULL + 1ULL) |
| 80 | #else |
| 81 | /* Otherwise, rely on two's complement. */ |
| 82 | #define PY_ULLONG_MAX (~0ULL) |
| 83 | #define PY_LLONG_MAX ((long long)(PY_ULLONG_MAX>>1)) |
| 84 | #define PY_LLONG_MIN (-PY_LLONG_MAX-1) |
| 85 | #endif /* LLONG_MAX */ |
| 86 | #endif |
| 87 | #endif /* HAVE_LONG_LONG */ |
| 88 | |
| 89 | /* a build with 30-bit digits for Python long integers needs an exact-width |
| 90 | * 32-bit unsigned integer type to store those digits. (We could just use |
| 91 | * type 'unsigned long', but that would be wasteful on a system where longs |
| 92 | * are 64-bits.) On Unix systems, the autoconf macro AC_TYPE_UINT32_T defines |
| 93 | * uint32_t to be such a type unless stdint.h or inttypes.h defines uint32_t. |
| 94 | * However, it doesn't set HAVE_UINT32_T, so we do that here. |
| 95 | */ |
| 96 | #ifdef uint32_t |
| 97 | #define HAVE_UINT32_T 1 |
| 98 | #endif |
| 99 | |
| 100 | #ifdef HAVE_UINT32_T |
| 101 | #ifndef PY_UINT32_T |
| 102 | #define PY_UINT32_T uint32_t |
| 103 | #endif |
| 104 | #endif |
| 105 | |
| 106 | /* Macros for a 64-bit unsigned integer type; used for type 'twodigits' in the |
| 107 | * long integer implementation, when 30-bit digits are enabled. |
| 108 | */ |
| 109 | #ifdef uint64_t |
| 110 | #define HAVE_UINT64_T 1 |
| 111 | #endif |
| 112 | |
| 113 | #ifdef HAVE_UINT64_T |
| 114 | #ifndef PY_UINT64_T |
| 115 | #define PY_UINT64_T uint64_t |
| 116 | #endif |
| 117 | #endif |
| 118 | |
| 119 | /* Signed variants of the above */ |
| 120 | #ifdef int32_t |
| 121 | #define HAVE_INT32_T 1 |
| 122 | #endif |
| 123 | |
| 124 | #ifdef HAVE_INT32_T |
| 125 | #ifndef PY_INT32_T |
| 126 | #define PY_INT32_T int32_t |
| 127 | #endif |
| 128 | #endif |
| 129 | |
| 130 | #ifdef int64_t |
| 131 | #define HAVE_INT64_T 1 |
| 132 | #endif |
| 133 | |
| 134 | #ifdef HAVE_INT64_T |
| 135 | #ifndef PY_INT64_T |
| 136 | #define PY_INT64_T int64_t |
| 137 | #endif |
| 138 | #endif |
| 139 | |
| 140 | /* If PYLONG_BITS_IN_DIGIT is not defined then we'll use 30-bit digits if all |
| 141 | the necessary integer types are available, and we're on a 64-bit platform |
| 142 | (as determined by SIZEOF_VOID_P); otherwise we use 15-bit digits. */ |
| 143 | |
| 144 | #ifndef PYLONG_BITS_IN_DIGIT |
| 145 | #if (defined HAVE_UINT64_T && defined HAVE_INT64_T && \ |
| 146 | defined HAVE_UINT32_T && defined HAVE_INT32_T && SIZEOF_VOID_P >= 8) |
| 147 | #define PYLONG_BITS_IN_DIGIT 30 |
| 148 | #else |
| 149 | #define PYLONG_BITS_IN_DIGIT 15 |
| 150 | #endif |
| 151 | #endif |
| 152 | |
| 153 | /* uintptr_t is the C9X name for an unsigned integral type such that a |
| 154 | * legitimate void* can be cast to uintptr_t and then back to void* again |
| 155 | * without loss of information. Similarly for intptr_t, wrt a signed |
| 156 | * integral type. |
| 157 | */ |
| 158 | #ifdef HAVE_UINTPTR_T |
| 159 | typedef uintptr_t Py_uintptr_t; |
| 160 | typedef intptr_t Py_intptr_t; |
| 161 | |
| 162 | #elif SIZEOF_VOID_P <= SIZEOF_INT |
| 163 | typedef unsigned int Py_uintptr_t; |
| 164 | typedef int Py_intptr_t; |
| 165 | |
| 166 | #elif SIZEOF_VOID_P <= SIZEOF_LONG |
| 167 | typedef unsigned long Py_uintptr_t; |
| 168 | typedef long Py_intptr_t; |
| 169 | |
| 170 | #elif defined(HAVE_LONG_LONG) && (SIZEOF_VOID_P <= SIZEOF_LONG_LONG) |
| 171 | typedef unsigned PY_LONG_LONG Py_uintptr_t; |
| 172 | typedef PY_LONG_LONG Py_intptr_t; |
| 173 | |
| 174 | #else |
| 175 | # error "Python needs a typedef for Py_uintptr_t in pyport.h." |
| 176 | #endif /* HAVE_UINTPTR_T */ |
| 177 | |
| 178 | /* Py_ssize_t is a signed integral type such that sizeof(Py_ssize_t) == |
| 179 | * sizeof(size_t). C99 doesn't define such a thing directly (size_t is an |
| 180 | * unsigned integral type). See PEP 353 for details. |
| 181 | */ |
| 182 | #ifdef HAVE_SSIZE_T |
| 183 | typedef ssize_t Py_ssize_t; |
| 184 | #elif SIZEOF_VOID_P == SIZEOF_SIZE_T |
| 185 | typedef Py_intptr_t Py_ssize_t; |
| 186 | #else |
| 187 | # error "Python needs a typedef for Py_ssize_t in pyport.h." |
| 188 | #endif |
| 189 | |
| 190 | /* Largest possible value of size_t. |
| 191 | SIZE_MAX is part of C99, so it might be defined on some |
| 192 | platforms. If it is not defined, (size_t)-1 is a portable |
| 193 | definition for C89, due to the way signed->unsigned |
| 194 | conversion is defined. */ |
| 195 | #ifdef SIZE_MAX |
| 196 | #define PY_SIZE_MAX SIZE_MAX |
| 197 | #else |
| 198 | #define PY_SIZE_MAX ((size_t)-1) |
| 199 | #endif |
| 200 | |
| 201 | /* Largest positive value of type Py_ssize_t. */ |
| 202 | #define PY_SSIZE_T_MAX ((Py_ssize_t)(((size_t)-1)>>1)) |
| 203 | /* Smallest negative value of type Py_ssize_t. */ |
| 204 | #define PY_SSIZE_T_MIN (-PY_SSIZE_T_MAX-1) |
| 205 | |
| 206 | /* |
| 207 | #if SIZEOF_PID_T > SIZEOF_LONG |
| 208 | # error "Python doesn't support sizeof(pid_t) > sizeof(long)" |
| 209 | #endif |
| 210 | */ |
| 211 | |
| 212 | /* PY_FORMAT_SIZE_T is a platform-specific modifier for use in a printf |
| 213 | * format to convert an argument with the width of a size_t or Py_ssize_t. |
| 214 | * C99 introduced "z" for this purpose, but not all platforms support that; |
| 215 | * e.g., MS compilers use "I" instead. |
| 216 | * |
| 217 | * These "high level" Python format functions interpret "z" correctly on |
| 218 | * all platforms (Python interprets the format string itself, and does whatever |
| 219 | * the platform C requires to convert a size_t/Py_ssize_t argument): |
| 220 | * |
| 221 | * PyString_FromFormat |
| 222 | * PyErr_Format |
| 223 | * PyString_FromFormatV |
| 224 | * |
| 225 | * Lower-level uses require that you interpolate the correct format modifier |
| 226 | * yourself (e.g., calling printf, fprintf, sprintf, PyOS_snprintf); for |
| 227 | * example, |
| 228 | * |
| 229 | * Py_ssize_t index; |
| 230 | * fprintf(stderr, "index %" PY_FORMAT_SIZE_T "d sucks\n", index); |
| 231 | * |
| 232 | * That will expand to %ld, or %Id, or to something else correct for a |
| 233 | * Py_ssize_t on the platform. |
| 234 | */ |
| 235 | #ifndef PY_FORMAT_SIZE_T |
| 236 | # if SIZEOF_SIZE_T == SIZEOF_INT && !defined(__APPLE__) |
| 237 | # define PY_FORMAT_SIZE_T "" |
| 238 | # elif SIZEOF_SIZE_T == SIZEOF_LONG |
| 239 | # define PY_FORMAT_SIZE_T "l" |
| 240 | # elif defined(MS_WINDOWS) |
| 241 | # define PY_FORMAT_SIZE_T "I" |
| 242 | # elif defined(__MINGW32__) && defined(__USE_MINGW_ANSI_STDIO) |
| 243 | # define PY_FORMAT_SIZE_T "z" |
| 244 | # else |
| 245 | # error "This platform's pyconfig.h needs to define PY_FORMAT_SIZE_T" |
| 246 | # endif |
| 247 | #endif |
| 248 | |
| 249 | /* PY_FORMAT_LONG_LONG is analogous to PY_FORMAT_SIZE_T above, but for |
| 250 | * the long long type instead of the size_t type. It's only available |
| 251 | * when HAVE_LONG_LONG is defined. The "high level" Python format |
| 252 | * functions listed above will interpret "lld" or "llu" correctly on |
| 253 | * all platforms. |
| 254 | */ |
| 255 | #ifdef HAVE_LONG_LONG |
| 256 | # ifndef PY_FORMAT_LONG_LONG |
| 257 | # if defined(MS_WIN64) || defined(MS_WINDOWS) |
| 258 | # define PY_FORMAT_LONG_LONG "I64" |
| 259 | # else |
| 260 | # error "This platform's pyconfig.h needs to define PY_FORMAT_LONG_LONG" |
| 261 | # endif |
| 262 | # endif |
| 263 | #endif |
| 264 | |
| 265 | /* Py_LOCAL can be used instead of static to get the fastest possible calling |
| 266 | * convention for functions that are local to a given module. |
| 267 | * |
| 268 | * Py_LOCAL_INLINE does the same thing, and also explicitly requests inlining, |
| 269 | * for platforms that support that. |
| 270 | * |
| 271 | * If PY_LOCAL_AGGRESSIVE is defined before python.h is included, more |
| 272 | * "aggressive" inlining/optimizaion is enabled for the entire module. This |
| 273 | * may lead to code bloat, and may slow things down for those reasons. It may |
| 274 | * also lead to errors, if the code relies on pointer aliasing. Use with |
| 275 | * care. |
| 276 | * |
| 277 | * NOTE: You can only use this for functions that are entirely local to a |
| 278 | * module; functions that are exported via method tables, callbacks, etc, |
| 279 | * should keep using static. |
| 280 | */ |
| 281 | |
| 282 | #undef USE_INLINE /* XXX - set via configure? */ |
| 283 | |
| 284 | #if defined(_MSC_VER) |
| 285 | #if defined(PY_LOCAL_AGGRESSIVE) |
| 286 | /* enable more aggressive optimization for visual studio */ |
| 287 | #pragma optimize("agtw", on) |
| 288 | #endif |
| 289 | /* ignore warnings if the compiler decides not to inline a function */ |
| 290 | #pragma warning(disable: 4710) |
| 291 | /* fastest possible local call under MSVC */ |
| 292 | #define Py_LOCAL(type) static type __fastcall |
| 293 | #define Py_LOCAL_INLINE(type) static __inline type __fastcall |
| 294 | #elif defined(USE_INLINE) |
| 295 | #define Py_LOCAL(type) static type |
| 296 | #define Py_LOCAL_INLINE(type) static inline type |
| 297 | #else |
| 298 | #define Py_LOCAL(type) static type |
| 299 | #define Py_LOCAL_INLINE(type) static type |
| 300 | #endif |
| 301 | |
| 302 | /* Py_MEMCPY can be used instead of memcpy in cases where the copied blocks |
| 303 | * are often very short. While most platforms have highly optimized code for |
| 304 | * large transfers, the setup costs for memcpy are often quite high. MEMCPY |
| 305 | * solves this by doing short copies "in line". |
| 306 | */ |
| 307 | |
| 308 | #if defined(_MSC_VER) |
| 309 | #define Py_MEMCPY(target, source, length) do { \ |
| 310 | size_t i_, n_ = (length); \ |
| 311 | char *t_ = (void*) (target); \ |
| 312 | const char *s_ = (void*) (source); \ |
| 313 | if (n_ >= 16) \ |
| 314 | memcpy(t_, s_, n_); \ |
| 315 | else \ |
| 316 | for (i_ = 0; i_ < n_; i_++) \ |
| 317 | t_[i_] = s_[i_]; \ |
| 318 | } while (0) |
| 319 | #else |
| 320 | #define Py_MEMCPY memcpy |
| 321 | #endif |
| 322 | |
| 323 | #include <stdlib.h> |
| 324 | |
| 325 | #ifdef HAVE_IEEEFP_H |
| 326 | #include <ieeefp.h> /* needed for 'finite' declaration on some platforms */ |
| 327 | #endif |
| 328 | |
| 329 | #include <math.h> /* Moved here from the math section, before extern "C" */ |
| 330 | |
| 331 | /******************************************** |
| 332 | * WRAPPER FOR <time.h> and/or <sys/time.h> * |
| 333 | ********************************************/ |
| 334 | |
| 335 | #ifdef TIME_WITH_SYS_TIME |
| 336 | #include <sys/time.h> |
| 337 | #include <time.h> |
| 338 | #else /* !TIME_WITH_SYS_TIME */ |
| 339 | #ifdef HAVE_SYS_TIME_H |
| 340 | #include <sys/time.h> |
| 341 | #else /* !HAVE_SYS_TIME_H */ |
| 342 | #include <time.h> |
| 343 | #endif /* !HAVE_SYS_TIME_H */ |
| 344 | #endif /* !TIME_WITH_SYS_TIME */ |
| 345 | |
| 346 | |
| 347 | /****************************** |
| 348 | * WRAPPER FOR <sys/select.h> * |
| 349 | ******************************/ |
| 350 | |
| 351 | /* NB caller must include <sys/types.h> */ |
| 352 | |
| 353 | #ifdef HAVE_SYS_SELECT_H |
| 354 | |
| 355 | #include <sys/select.h> |
| 356 | |
| 357 | #endif /* !HAVE_SYS_SELECT_H */ |
| 358 | |
| 359 | /******************************* |
| 360 | * stat() and fstat() fiddling * |
| 361 | *******************************/ |
| 362 | |
| 363 | /* We expect that stat and fstat exist on most systems. |
| 364 | * It's confirmed on Unix, Mac and Windows. |
| 365 | * If you don't have them, add |
| 366 | * #define DONT_HAVE_STAT |
| 367 | * and/or |
| 368 | * #define DONT_HAVE_FSTAT |
| 369 | * to your pyconfig.h. Python code beyond this should check HAVE_STAT and |
| 370 | * HAVE_FSTAT instead. |
| 371 | * Also |
| 372 | * #define HAVE_SYS_STAT_H |
| 373 | * if <sys/stat.h> exists on your platform, and |
| 374 | * #define HAVE_STAT_H |
| 375 | * if <stat.h> does. |
| 376 | */ |
| 377 | #ifndef DONT_HAVE_STAT |
| 378 | #define HAVE_STAT |
| 379 | #endif |
| 380 | |
| 381 | #ifndef DONT_HAVE_FSTAT |
| 382 | #define HAVE_FSTAT |
| 383 | #endif |
| 384 | |
| 385 | #ifdef RISCOS |
| 386 | #include <sys/types.h> |
| 387 | #include "unixstuff.h" |
| 388 | #endif |
| 389 | |
| 390 | #ifdef HAVE_SYS_STAT_H |
| 391 | #if defined(PYOS_OS2) && defined(PYCC_GCC) |
| 392 | #include <sys/types.h> |
| 393 | #endif |
| 394 | #include <sys/stat.h> |
| 395 | #elif defined(HAVE_STAT_H) |
| 396 | #include <stat.h> |
| 397 | #endif |
| 398 | |
| 399 | #if defined(PYCC_VACPP) |
| 400 | /* VisualAge C/C++ Failed to Define MountType Field in sys/stat.h */ |
| 401 | #define S_IFMT (S_IFDIR|S_IFCHR|S_IFREG) |
| 402 | #endif |
| 403 | |
| 404 | #ifndef S_ISREG |
| 405 | #define S_ISREG(x) (((x) & S_IFMT) == S_IFREG) |
| 406 | #endif |
| 407 | |
| 408 | #ifndef S_ISDIR |
| 409 | #define S_ISDIR(x) (((x) & S_IFMT) == S_IFDIR) |
| 410 | #endif |
| 411 | |
| 412 | |
| 413 | #ifdef __cplusplus |
| 414 | /* Move this down here since some C++ #include's don't like to be included |
| 415 | inside an extern "C" */ |
| 416 | extern "C" { |
| 417 | #endif |
| 418 | |
| 419 | |
| 420 | /* Py_ARITHMETIC_RIGHT_SHIFT |
| 421 | * C doesn't define whether a right-shift of a signed integer sign-extends |
| 422 | * or zero-fills. Here a macro to force sign extension: |
| 423 | * Py_ARITHMETIC_RIGHT_SHIFT(TYPE, I, J) |
| 424 | * Return I >> J, forcing sign extension. Arithmetically, return the |
| 425 | * floor of I/2**J. |
| 426 | * Requirements: |
| 427 | * I should have signed integer type. In the terminology of C99, this can |
| 428 | * be either one of the five standard signed integer types (signed char, |
| 429 | * short, int, long, long long) or an extended signed integer type. |
| 430 | * J is an integer >= 0 and strictly less than the number of bits in the |
| 431 | * type of I (because C doesn't define what happens for J outside that |
| 432 | * range either). |
| 433 | * TYPE used to specify the type of I, but is now ignored. It's been left |
| 434 | * in for backwards compatibility with versions <= 2.6 or 3.0. |
| 435 | * Caution: |
| 436 | * I may be evaluated more than once. |
| 437 | */ |
| 438 | #ifdef SIGNED_RIGHT_SHIFT_ZERO_FILLS |
| 439 | #define Py_ARITHMETIC_RIGHT_SHIFT(TYPE, I, J) \ |
| 440 | ((I) < 0 ? -1-((-1-(I)) >> (J)) : (I) >> (J)) |
| 441 | #else |
| 442 | #define Py_ARITHMETIC_RIGHT_SHIFT(TYPE, I, J) ((I) >> (J)) |
| 443 | #endif |
| 444 | |
| 445 | /* Py_FORCE_EXPANSION(X) |
| 446 | * "Simply" returns its argument. However, macro expansions within the |
| 447 | * argument are evaluated. This unfortunate trickery is needed to get |
| 448 | * token-pasting to work as desired in some cases. |
| 449 | */ |
| 450 | #define Py_FORCE_EXPANSION(X) X |
| 451 | |
| 452 | /* Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW) |
| 453 | * Cast VALUE to type NARROW from type WIDE. In Py_DEBUG mode, this |
| 454 | * assert-fails if any information is lost. |
| 455 | * Caution: |
| 456 | * VALUE may be evaluated more than once. |
| 457 | */ |
| 458 | #ifdef Py_DEBUG |
| 459 | #define Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW) \ |
| 460 | (assert((WIDE)(NARROW)(VALUE) == (VALUE)), (NARROW)(VALUE)) |
| 461 | #else |
| 462 | #define Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW) (NARROW)(VALUE) |
| 463 | #endif |
| 464 | |
| 465 | /* Py_SET_ERRNO_ON_MATH_ERROR(x) |
| 466 | * If a libm function did not set errno, but it looks like the result |
| 467 | * overflowed or not-a-number, set errno to ERANGE or EDOM. Set errno |
| 468 | * to 0 before calling a libm function, and invoke this macro after, |
| 469 | * passing the function result. |
| 470 | * Caution: |
| 471 | * This isn't reliable. See Py_OVERFLOWED comments. |
| 472 | * X is evaluated more than once. |
| 473 | */ |
| 474 | #if defined(__FreeBSD__) || defined(__OpenBSD__) || (defined(__hpux) && defined(__ia64)) |
| 475 | #define _Py_SET_EDOM_FOR_NAN(X) if (isnan(X)) errno = EDOM; |
| 476 | #else |
| 477 | #define _Py_SET_EDOM_FOR_NAN(X) ; |
| 478 | #endif |
| 479 | #define Py_SET_ERRNO_ON_MATH_ERROR(X) \ |
| 480 | do { \ |
| 481 | if (errno == 0) { \ |
| 482 | if ((X) == Py_HUGE_VAL || (X) == -Py_HUGE_VAL) \ |
| 483 | errno = ERANGE; \ |
| 484 | else _Py_SET_EDOM_FOR_NAN(X) \ |
| 485 | } \ |
| 486 | } while(0) |
| 487 | |
| 488 | /* Py_SET_ERANGE_ON_OVERFLOW(x) |
| 489 | * An alias of Py_SET_ERRNO_ON_MATH_ERROR for backward-compatibility. |
| 490 | */ |
| 491 | #define Py_SET_ERANGE_IF_OVERFLOW(X) Py_SET_ERRNO_ON_MATH_ERROR(X) |
| 492 | |
| 493 | /* Py_ADJUST_ERANGE1(x) |
| 494 | * Py_ADJUST_ERANGE2(x, y) |
| 495 | * Set errno to 0 before calling a libm function, and invoke one of these |
| 496 | * macros after, passing the function result(s) (Py_ADJUST_ERANGE2 is useful |
| 497 | * for functions returning complex results). This makes two kinds of |
| 498 | * adjustments to errno: (A) If it looks like the platform libm set |
| 499 | * errno=ERANGE due to underflow, clear errno. (B) If it looks like the |
| 500 | * platform libm overflowed but didn't set errno, force errno to ERANGE. In |
| 501 | * effect, we're trying to force a useful implementation of C89 errno |
| 502 | * behavior. |
| 503 | * Caution: |
| 504 | * This isn't reliable. See Py_OVERFLOWED comments. |
| 505 | * X and Y may be evaluated more than once. |
| 506 | */ |
| 507 | #define Py_ADJUST_ERANGE1(X) \ |
| 508 | do { \ |
| 509 | if (errno == 0) { \ |
| 510 | if ((X) == Py_HUGE_VAL || (X) == -Py_HUGE_VAL) \ |
| 511 | errno = ERANGE; \ |
| 512 | } \ |
| 513 | else if (errno == ERANGE && (X) == 0.0) \ |
| 514 | errno = 0; \ |
| 515 | } while(0) |
| 516 | |
| 517 | #define Py_ADJUST_ERANGE2(X, Y) \ |
| 518 | do { \ |
| 519 | if ((X) == Py_HUGE_VAL || (X) == -Py_HUGE_VAL || \ |
| 520 | (Y) == Py_HUGE_VAL || (Y) == -Py_HUGE_VAL) { \ |
| 521 | if (errno == 0) \ |
| 522 | errno = ERANGE; \ |
| 523 | } \ |
| 524 | else if (errno == ERANGE) \ |
| 525 | errno = 0; \ |
| 526 | } while(0) |
| 527 | |
| 528 | /* The functions _Py_dg_strtod and _Py_dg_dtoa in Python/dtoa.c (which are |
| 529 | * required to support the short float repr introduced in Python 3.1) require |
| 530 | * that the floating-point unit that's being used for arithmetic operations |
| 531 | * on C doubles is set to use 53-bit precision. It also requires that the |
| 532 | * FPU rounding mode is round-half-to-even, but that's less often an issue. |
| 533 | * |
| 534 | * If your FPU isn't already set to 53-bit precision/round-half-to-even, and |
| 535 | * you want to make use of _Py_dg_strtod and _Py_dg_dtoa, then you should |
| 536 | * |
| 537 | * #define HAVE_PY_SET_53BIT_PRECISION 1 |
| 538 | * |
| 539 | * and also give appropriate definitions for the following three macros: |
| 540 | * |
| 541 | * _PY_SET_53BIT_PRECISION_START : store original FPU settings, and |
| 542 | * set FPU to 53-bit precision/round-half-to-even |
| 543 | * _PY_SET_53BIT_PRECISION_END : restore original FPU settings |
| 544 | * _PY_SET_53BIT_PRECISION_HEADER : any variable declarations needed to |
| 545 | * use the two macros above. |
| 546 | * |
| 547 | * The macros are designed to be used within a single C function: see |
| 548 | * Python/pystrtod.c for an example of their use. |
| 549 | */ |
| 550 | |
| 551 | /* get and set x87 control word for gcc/x86 */ |
| 552 | #ifdef HAVE_GCC_ASM_FOR_X87 |
| 553 | #define HAVE_PY_SET_53BIT_PRECISION 1 |
| 554 | /* _Py_get/set_387controlword functions are defined in Python/pymath.c */ |
| 555 | #define _Py_SET_53BIT_PRECISION_HEADER \ |
| 556 | unsigned short old_387controlword, new_387controlword |
| 557 | #define _Py_SET_53BIT_PRECISION_START \ |
| 558 | do { \ |
| 559 | old_387controlword = _Py_get_387controlword(); \ |
| 560 | new_387controlword = (old_387controlword & ~0x0f00) | 0x0200; \ |
| 561 | if (new_387controlword != old_387controlword) \ |
| 562 | _Py_set_387controlword(new_387controlword); \ |
| 563 | } while (0) |
| 564 | #define _Py_SET_53BIT_PRECISION_END \ |
| 565 | if (new_387controlword != old_387controlword) \ |
| 566 | _Py_set_387controlword(old_387controlword) |
| 567 | #endif |
| 568 | |
| 569 | /* get and set x87 control word for VisualStudio/x86 */ |
| 570 | #if defined(_MSC_VER) && !defined(_WIN64) /* x87 not supported in 64-bit */ |
| 571 | #define HAVE_PY_SET_53BIT_PRECISION 1 |
| 572 | #define _Py_SET_53BIT_PRECISION_HEADER \ |
| 573 | unsigned int old_387controlword, new_387controlword, out_387controlword |
| 574 | /* We use the __control87_2 function to set only the x87 control word. |
| 575 | The SSE control word is unaffected. */ |
| 576 | #define _Py_SET_53BIT_PRECISION_START \ |
| 577 | do { \ |
| 578 | __control87_2(0, 0, &old_387controlword, NULL); \ |
| 579 | new_387controlword = \ |
| 580 | (old_387controlword & ~(_MCW_PC | _MCW_RC)) | (_PC_53 | _RC_NEAR); \ |
| 581 | if (new_387controlword != old_387controlword) \ |
| 582 | __control87_2(new_387controlword, _MCW_PC | _MCW_RC, \ |
| 583 | &out_387controlword, NULL); \ |
| 584 | } while (0) |
| 585 | #define _Py_SET_53BIT_PRECISION_END \ |
| 586 | do { \ |
| 587 | if (new_387controlword != old_387controlword) \ |
| 588 | __control87_2(old_387controlword, _MCW_PC | _MCW_RC, \ |
| 589 | &out_387controlword, NULL); \ |
| 590 | } while (0) |
| 591 | #endif |
| 592 | |
| 593 | /* default definitions are empty */ |
| 594 | #ifndef HAVE_PY_SET_53BIT_PRECISION |
| 595 | #define _Py_SET_53BIT_PRECISION_HEADER |
| 596 | #define _Py_SET_53BIT_PRECISION_START |
| 597 | #define _Py_SET_53BIT_PRECISION_END |
| 598 | #endif |
| 599 | |
| 600 | /* If we can't guarantee 53-bit precision, don't use the code |
| 601 | in Python/dtoa.c, but fall back to standard code. This |
| 602 | means that repr of a float will be long (17 sig digits). |
| 603 | |
| 604 | Realistically, there are two things that could go wrong: |
| 605 | |
| 606 | (1) doubles aren't IEEE 754 doubles, or |
| 607 | (2) we're on x86 with the rounding precision set to 64-bits |
| 608 | (extended precision), and we don't know how to change |
| 609 | the rounding precision. |
| 610 | */ |
| 611 | |
| 612 | #if !defined(DOUBLE_IS_LITTLE_ENDIAN_IEEE754) && \ |
| 613 | !defined(DOUBLE_IS_BIG_ENDIAN_IEEE754) && \ |
| 614 | !defined(DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754) |
| 615 | #define PY_NO_SHORT_FLOAT_REPR |
| 616 | #endif |
| 617 | |
| 618 | /* double rounding is symptomatic of use of extended precision on x86. If |
| 619 | we're seeing double rounding, and we don't have any mechanism available for |
| 620 | changing the FPU rounding precision, then don't use Python/dtoa.c. */ |
| 621 | #if defined(X87_DOUBLE_ROUNDING) && !defined(HAVE_PY_SET_53BIT_PRECISION) |
| 622 | #define PY_NO_SHORT_FLOAT_REPR |
| 623 | #endif |
| 624 | |
| 625 | /* Py_DEPRECATED(version) |
| 626 | * Declare a variable, type, or function deprecated. |
| 627 | * Usage: |
| 628 | * extern int old_var Py_DEPRECATED(2.3); |
| 629 | * typedef int T1 Py_DEPRECATED(2.4); |
| 630 | * extern int x() Py_DEPRECATED(2.5); |
| 631 | */ |
| 632 | #if defined(__GNUC__) && ((__GNUC__ >= 4) || \ |
| 633 | (__GNUC__ == 3) && (__GNUC_MINOR__ >= 1)) |
| 634 | #define Py_DEPRECATED(VERSION_UNUSED) __attribute__((__deprecated__)) |
| 635 | #else |
| 636 | #define Py_DEPRECATED(VERSION_UNUSED) |
| 637 | #endif |
| 638 | |
| 639 | /************************************************************************** |
| 640 | Prototypes that are missing from the standard include files on some systems |
| 641 | (and possibly only some versions of such systems.) |
| 642 | |
| 643 | Please be conservative with adding new ones, document them and enclose them |
| 644 | in platform-specific #ifdefs. |
| 645 | **************************************************************************/ |
| 646 | |
| 647 | #ifdef SOLARIS |
| 648 | /* Unchecked */ |
| 649 | extern int gethostname(char *, int); |
| 650 | #endif |
| 651 | |
| 652 | #ifdef __BEOS__ |
| 653 | /* Unchecked */ |
| 654 | /* It's in the libs, but not the headers... - [cjh] */ |
| 655 | int shutdown( int, int ); |
| 656 | #endif |
| 657 | |
| 658 | #ifdef HAVE__GETPTY |
| 659 | #include <sys/types.h> /* we need to import mode_t */ |
| 660 | extern char * _getpty(int *, int, mode_t, int); |
| 661 | #endif |
| 662 | |
| 663 | /* On QNX 6, struct termio must be declared by including sys/termio.h |
| 664 | if TCGETA, TCSETA, TCSETAW, or TCSETAF are used. sys/termio.h must |
| 665 | be included before termios.h or it will generate an error. */ |
| 666 | #if defined(HAVE_SYS_TERMIO_H) && !defined(__hpux) |
| 667 | #include <sys/termio.h> |
| 668 | #endif |
| 669 | |
| 670 | #if defined(HAVE_OPENPTY) || defined(HAVE_FORKPTY) |
| 671 | #if !defined(HAVE_PTY_H) && !defined(HAVE_LIBUTIL_H) && !defined(HAVE_UTIL_H) |
| 672 | /* BSDI does not supply a prototype for the 'openpty' and 'forkpty' |
| 673 | functions, even though they are included in libutil. */ |
| 674 | #include <termios.h> |
| 675 | extern int openpty(int *, int *, char *, struct termios *, struct winsize *); |
| 676 | extern pid_t forkpty(int *, char *, struct termios *, struct winsize *); |
| 677 | #endif /* !defined(HAVE_PTY_H) && !defined(HAVE_LIBUTIL_H) */ |
| 678 | #endif /* defined(HAVE_OPENPTY) || defined(HAVE_FORKPTY) */ |
| 679 | |
| 680 | |
| 681 | /* These are pulled from various places. It isn't obvious on what platforms |
| 682 | they are necessary, nor what the exact prototype should look like (which |
| 683 | is likely to vary between platforms!) If you find you need one of these |
| 684 | declarations, please move them to a platform-specific block and include |
| 685 | proper prototypes. */ |
| 686 | #if 0 |
| 687 | |
| 688 | /* From Modules/resource.c */ |
| 689 | extern int getrusage(); |
| 690 | extern int getpagesize(); |
| 691 | |
| 692 | /* From Python/sysmodule.c and Modules/posixmodule.c */ |
| 693 | extern int fclose(FILE *); |
| 694 | |
| 695 | /* From Modules/posixmodule.c */ |
| 696 | extern int fdatasync(int); |
| 697 | #endif /* 0 */ |
| 698 | |
| 699 | |
| 700 | #ifdef __MINGW32__ |
| 701 | /* FIXME: some of next definitions specific to gcc(mingw build) can be |
| 702 | generalized on definitions of _WIN32 or WIN32 and to be common for |
| 703 | all windows build instead explicitly to define only for non-autotools |
| 704 | based builds (see PC/pyconfig.h for details). */ |
| 705 | #if !defined(MS_WIN64) && defined(_WIN64) |
| 706 | # define MS_WIN64 |
| 707 | #endif |
| 708 | #if !defined(MS_WIN32) && defined(_WIN32) |
| 709 | # define MS_WIN32 |
| 710 | #endif |
| 711 | #if !defined(MS_WIN32) && defined(_WIN32) |
| 712 | # define MS_WIN32 |
| 713 | #endif |
| 714 | #if !defined(MS_WINDOWS) && defined(MS_WIN32) |
| 715 | # define MS_WINDOWS |
| 716 | #endif |
| 717 | |
| 718 | #ifndef PYTHONPATH |
| 719 | # define PYTHONPATH ".\\DLLs;.\\lib;.\\lib\\plat-win;.\\lib\\lib-tk" |
| 720 | #endif |
| 721 | |
| 722 | /* python 2.6+ requires Windows 2000 or greater. */ |
| 723 | #define Py_WINVER 0x0500 |
| 724 | |
| 725 | #if defined(Py_BUILD_CORE) || defined(Py_BUILD_CORE_MODULE) |
| 726 | /* FIXME if NTDDI_xxx is in use by mingw (see PC/pyconfig.h) */ |
| 727 | #ifndef WINVER |
| 728 | # define WINVER Py_WINVER |
| 729 | #endif |
| 730 | #ifndef _WIN32_WINNT |
| 731 | # define _WIN32_WINNT Py_WINVER |
| 732 | #endif |
| 733 | #endif |
| 734 | |
| 735 | #ifdef PLATFORM |
| 736 | /*NOTE: if compile getplatform.c PLATFORM is set to MACHDEP that is |
| 737 | "win" for mingw build (see respective comment in configure.in). */ |
| 738 | # undef PLATFORM |
| 739 | #endif |
| 740 | /* always set to "win32" - see PC/pyconfig.h */ |
| 741 | #define PLATFORM "win32" |
| 742 | |
| 743 | #if defined(MS_WIN64) |
| 744 | # define SIZEOF_HKEY 8 |
| 745 | #elif defined(MS_WIN32) |
| 746 | # define SIZEOF_HKEY 4 |
| 747 | #endif |
| 748 | |
| 749 | /*NOTE: mingw has isinf as macro defined in math.h. |
| 750 | Since PC/pyconfig.h define Py_IS_INFINITY(X) that cover HAVE_DECL_ISFINITE |
| 751 | here for Py_IS_INFINITY we define same as for MSVC build. |
| 752 | This makes HAVE_DECL_ISFINITE needless. |
| 753 | Also see commants in configure.in and pymath.h. */ |
| 754 | #define Py_IS_INFINITY(X) (!_finite(X) && !_isnan(X)) |
| 755 | |
| 756 | #ifndef HAVE_LARGEFILE_SUPPORT |
| 757 | /* |
| 758 | FIXME: on windows platforms: |
| 759 | - Python use PY_LONG_LONG(!) for Py_off_t (_fileio.c); |
| 760 | - HAVE_LARGEFILE_SUPPORT is defined in PC/pyconfig.h; |
| 761 | - PC/pyconfig.h define 4 for SIZEOF_OFF_T and 8 for SIZEOF_FPOS_T; |
| 762 | - If HAVE_LARGEFILE_SUPPORT isn't defined python will use off_t(!) |
| 763 | for Py_off_t (see fileobjects.c and bz2module.c). |
| 764 | Since for mingw configure detect 4 for size of "off_t" and 8 - for |
| 765 | "fpos_t" we has to define HAVE_LARGEFILE_SUPPORT too. |
| 766 | TODO: to test with AC_SYS_LARGEFILE and appropriate updates in |
| 767 | python code. |
| 768 | */ |
| 769 | # define HAVE_LARGEFILE_SUPPORT |
| 770 | #endif |
| 771 | |
| 772 | #if defined(Py_ENABLE_SHARED) |
| 773 | # define MS_COREDLL 1 /* deprecated old symbol, but still in use for windows code */ |
| 774 | #else |
| 775 | # define MS_NO_COREDLL 1 |
| 776 | #endif |
| 777 | |
| 778 | #if Py_UNICODE_SIZE == 2 |
| 779 | /* For mingw is 2 but FIXME: What about to raise error in configure if |
| 780 | unicode size isn't two ? Did python windows code support ucs4 ? */ |
| 781 | # define Py_WIN_WIDE_FILENAMES |
| 782 | #endif |
| 783 | |
| 784 | /* NOTE: Don't define HAVE_STDDEF_H. |
| 785 | * It is defined by PC/pyconfig.h and used by Include/Python.h |
| 786 | * (with comment For size_t?) but isn't required for mingw */ |
| 787 | #define Py_SOCKET_FD_CAN_BE_GE_FD_SETSIZE |
| 788 | |
| 789 | /* All other defines from PC/pyconfig.h are in autoconf generated |
| 790 | pyconfig.h */ |
| 791 | #if 0 |
| 792 | /*FIXME: |
| 793 | MSDN: |
| 794 | "The getaddrinfo function was added to the ws2_32.dll on Windows XP |
| 795 | and later." |
| 796 | mingw: |
| 797 | getaddrinfo and getnameinfo is defined for WINVER >= 0x0501. |
| 798 | PC/pyconfig.h: |
| 799 | "Python 2.6+ requires Windows 2000 or greater" |
| 800 | So far so good but socketmodule.h define HAVE_GETADDRINFO and |
| 801 | HAVE_GETNAMEINFO under very specific condition : |
| 802 | # ifdef SIO_GET_MULTICAST_FILTER |
| 803 | # include <MSTcpIP.h> |
| 804 | So the question is "Separate SDKs" required for w2k in MSVC build ? |
| 805 | TODO: resolve later, may by configure :-/. For now python code will |
| 806 | use fake implementation and if user define appropriate value for |
| 807 | WINVER - the functionas from C runtime. |
| 808 | For details see socketmodule.c . |
| 809 | */ |
| 810 | #ifndef HAVE_GETADDRINFO |
| 811 | # define HAVE_GETADDRINFO |
| 812 | #endif |
| 813 | #ifndef HAVE_GETNAMEINFO |
| 814 | # define HAVE_GETNAMEINFO |
| 815 | #endif |
| 816 | #endif |
| 817 | |
| 818 | /* Refer to <Modules/_math.h> . |
| 819 | For mingw host configure detect functions described as HAVE_XXX |
| 820 | in _math.h but as MSVC don't define them we will undefine HAVE_XXX |
| 821 | too to use _Py_* replacements same as MSVC build . |
| 822 | */ |
| 823 | #undef HAVE_ACOSH |
| 824 | #undef HAVE_ASINH |
| 825 | #undef HAVE_ATANH |
| 826 | #undef HAVE_EXPM1 |
| 827 | #undef HAVE_LOG1P |
| 828 | |
| 829 | #endif /*def __MINGW32__*/ |
| 830 | |
| 831 | /* On 4.4BSD-descendants, ctype functions serves the whole range of |
| 832 | * wchar_t character set rather than single byte code points only. |
| 833 | * This characteristic can break some operations of string object |
| 834 | * including str.upper() and str.split() on UTF-8 locales. This |
| 835 | * workaround was provided by Tim Robbins of FreeBSD project. |
| 836 | */ |
| 837 | |
| 838 | #ifdef __FreeBSD__ |
| 839 | #include <osreldate.h> |
| 840 | #if __FreeBSD_version > 500039 |
| 841 | # define _PY_PORT_CTYPE_UTF8_ISSUE |
| 842 | #endif |
| 843 | #endif |
| 844 | |
| 845 | |
| 846 | #if defined(__APPLE__) |
| 847 | # define _PY_PORT_CTYPE_UTF8_ISSUE |
| 848 | #endif |
| 849 | |
| 850 | #ifdef _PY_PORT_CTYPE_UTF8_ISSUE |
| 851 | #include <ctype.h> |
| 852 | #include <wctype.h> |
| 853 | #undef isalnum |
| 854 | #define isalnum(c) iswalnum(btowc(c)) |
| 855 | #undef isalpha |
| 856 | #define isalpha(c) iswalpha(btowc(c)) |
| 857 | #undef islower |
| 858 | #define islower(c) iswlower(btowc(c)) |
| 859 | #undef isspace |
| 860 | #define isspace(c) iswspace(btowc(c)) |
| 861 | #undef isupper |
| 862 | #define isupper(c) iswupper(btowc(c)) |
| 863 | #undef tolower |
| 864 | #define tolower(c) towlower(btowc(c)) |
| 865 | #undef toupper |
| 866 | #define toupper(c) towupper(btowc(c)) |
| 867 | #endif |
| 868 | |
| 869 | |
| 870 | /* Declarations for symbol visibility. |
| 871 | |
| 872 | PyAPI_FUNC(type): Declares a public Python API function and return type |
| 873 | PyAPI_DATA(type): Declares public Python data and its type |
| 874 | PyMODINIT_FUNC: A Python module init function. If these functions are |
| 875 | inside the Python core, they are private to the core. |
| 876 | If in an extension module, it may be declared with |
| 877 | external linkage depending on the platform. |
| 878 | |
| 879 | As a number of platforms support/require "__declspec(dllimport/dllexport)", |
| 880 | we support a HAVE_DECLSPEC_DLL macro to save duplication. |
| 881 | */ |
| 882 | |
| 883 | /* |
| 884 | MSVC windows port is handled in PC/pyconfig.h. |
| 885 | |
| 886 | BeOS, mingw32 and cygwin use autoconf and require special |
| 887 | linkage handling and all of these use __declspec(). |
| 888 | */ |
| 889 | #if defined(__CYGWIN__) || defined(__MINGW32__) || defined(__BEOS__) |
| 890 | # define HAVE_DECLSPEC_DLL |
| 891 | #endif |
| 892 | |
| 893 | /* only get special linkage if built as shared or platform is Cygwin */ |
| 894 | #if defined(Py_ENABLE_SHARED) || defined(__CYGWIN__) |
| 895 | # if defined(HAVE_DECLSPEC_DLL) |
| 896 | # ifdef Py_BUILD_CORE |
| 897 | # define PyAPI_FUNC(RTYPE) __declspec(dllexport) RTYPE |
| 898 | # define PyAPI_DATA(RTYPE) extern __declspec(dllexport) RTYPE |
| 899 | /* module init functions inside the core need no external linkage */ |
| 900 | /* except for Cygwin to handle embedding (FIXME: BeOS too?) */ |
| 901 | # if defined(__CYGWIN__) |
| 902 | # define PyMODINIT_FUNC __declspec(dllexport) void |
| 903 | # else /* __CYGWIN__ */ |
| 904 | # define PyMODINIT_FUNC void |
| 905 | # endif /* __CYGWIN__ */ |
| 906 | # else /* Py_BUILD_CORE */ |
| 907 | /* Building an extension module, or an embedded situation */ |
| 908 | /* public Python functions and data are imported */ |
| 909 | /* Under Cygwin, auto-import functions to prevent compilation */ |
| 910 | /* failures similar to those described at the bottom of 4.1: */ |
| 911 | /* http://docs.python.org/extending/windows.html#a-cookbook-approach */ |
| 912 | # if !defined(__CYGWIN__) && !defined(__MINGW32__) |
| 913 | # define PyAPI_FUNC(RTYPE) __declspec(dllimport) RTYPE |
| 914 | # else |
| 915 | # define PyAPI_FUNC(RTYPE) RTYPE |
| 916 | # endif /* !__CYGWIN__ !__MINGW32__ */ |
| 917 | /* NOTE: The issue3945 "compile error in _fileio.c (cygwin)" |
| 918 | * was resolved with modification of code. |
| 919 | * This issue was resolved for gcc(mingw) with enabling auto |
| 920 | * import feature. Since _fileio.c problem now disappear there |
| 921 | * is no more reasons to avoid dllimport for gcc(mingw). |
| 922 | */ |
| 923 | # define PyAPI_DATA(RTYPE) extern __declspec(dllimport) RTYPE |
| 924 | /* module init functions outside the core must be exported */ |
| 925 | # if defined(__cplusplus) |
| 926 | # define PyMODINIT_FUNC extern "C" __declspec(dllexport) void |
| 927 | # else /* __cplusplus */ |
| 928 | # define PyMODINIT_FUNC __declspec(dllexport) void |
| 929 | # endif /* __cplusplus */ |
| 930 | # endif /* Py_BUILD_CORE */ |
| 931 | # endif /* HAVE_DECLSPEC */ |
| 932 | #endif /* Py_ENABLE_SHARED */ |
| 933 | |
| 934 | /* If no external linkage macros defined by now, create defaults */ |
| 935 | #ifndef PyAPI_FUNC |
| 936 | # define PyAPI_FUNC(RTYPE) RTYPE |
| 937 | #endif |
| 938 | #ifndef PyAPI_DATA |
| 939 | # define PyAPI_DATA(RTYPE) extern RTYPE |
| 940 | #endif |
| 941 | #ifndef PyMODINIT_FUNC |
| 942 | # if defined(__cplusplus) |
| 943 | # define PyMODINIT_FUNC extern "C" void |
| 944 | # else /* __cplusplus */ |
| 945 | # define PyMODINIT_FUNC void |
| 946 | # endif /* __cplusplus */ |
| 947 | #endif |
| 948 | |
| 949 | /* Deprecated DL_IMPORT and DL_EXPORT macros */ |
| 950 | #if defined(Py_ENABLE_SHARED) && defined (HAVE_DECLSPEC_DLL) |
| 951 | # if defined(Py_BUILD_CORE) |
| 952 | # define DL_IMPORT(RTYPE) __declspec(dllexport) RTYPE |
| 953 | # define DL_EXPORT(RTYPE) __declspec(dllexport) RTYPE |
| 954 | # else |
| 955 | # define DL_IMPORT(RTYPE) __declspec(dllimport) RTYPE |
| 956 | # define DL_EXPORT(RTYPE) __declspec(dllexport) RTYPE |
| 957 | # endif |
| 958 | #endif |
| 959 | #ifndef DL_EXPORT |
| 960 | # define DL_EXPORT(RTYPE) RTYPE |
| 961 | #endif |
| 962 | #ifndef DL_IMPORT |
| 963 | # define DL_IMPORT(RTYPE) RTYPE |
| 964 | #endif |
| 965 | /* End of deprecated DL_* macros */ |
| 966 | |
| 967 | /* If the fd manipulation macros aren't defined, |
| 968 | here is a set that should do the job */ |
| 969 | |
| 970 | #if 0 /* disabled and probably obsolete */ |
| 971 | |
| 972 | #ifndef FD_SETSIZE |
| 973 | #define FD_SETSIZE 256 |
| 974 | #endif |
| 975 | |
| 976 | #ifndef FD_SET |
| 977 | |
| 978 | typedef long fd_mask; |
| 979 | |
| 980 | #define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */ |
| 981 | #ifndef howmany |
| 982 | #define howmany(x, y) (((x)+((y)-1))/(y)) |
| 983 | #endif /* howmany */ |
| 984 | |
| 985 | typedef struct fd_set { |
| 986 | fd_mask fds_bits[howmany(FD_SETSIZE, NFDBITS)]; |
| 987 | } fd_set; |
| 988 | |
| 989 | #define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS))) |
| 990 | #define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS))) |
| 991 | #define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS))) |
| 992 | #define FD_ZERO(p) memset((char *)(p), '\0', sizeof(*(p))) |
| 993 | |
| 994 | #endif /* FD_SET */ |
| 995 | |
| 996 | #endif /* fd manipulation macros */ |
| 997 | |
| 998 | |
| 999 | /* limits.h constants that may be missing */ |
| 1000 | |
| 1001 | #ifndef INT_MAX |
| 1002 | #define INT_MAX 2147483647 |
| 1003 | #endif |
| 1004 | |
| 1005 | #ifndef LONG_MAX |
| 1006 | #if SIZEOF_LONG == 4 |
| 1007 | #define LONG_MAX 0X7FFFFFFFL |
| 1008 | #elif SIZEOF_LONG == 8 |
| 1009 | #define LONG_MAX 0X7FFFFFFFFFFFFFFFL |
| 1010 | #else |
| 1011 | #error "could not set LONG_MAX in pyport.h" |
| 1012 | #endif |
| 1013 | #endif |
| 1014 | |
| 1015 | #ifndef LONG_MIN |
| 1016 | #define LONG_MIN (-LONG_MAX-1) |
| 1017 | #endif |
| 1018 | |
| 1019 | #ifndef LONG_BIT |
| 1020 | #define LONG_BIT (8 * SIZEOF_LONG) |
| 1021 | #endif |
| 1022 | |
| 1023 | #if LONG_BIT != 8 * SIZEOF_LONG |
| 1024 | /* 04-Oct-2000 LONG_BIT is apparently (mis)defined as 64 on some recent |
| 1025 | * 32-bit platforms using gcc. We try to catch that here at compile-time |
| 1026 | * rather than waiting for integer multiplication to trigger bogus |
| 1027 | * overflows. |
| 1028 | */ |
| 1029 | #error "LONG_BIT definition appears wrong for platform (bad gcc/glibc config?)." |
| 1030 | #endif |
| 1031 | |
| 1032 | #ifdef __cplusplus |
| 1033 | } |
| 1034 | #endif |
| 1035 | |
| 1036 | /* |
| 1037 | * Hide GCC attributes from compilers that don't support them. |
| 1038 | */ |
| 1039 | #if (!defined(__GNUC__) || __GNUC__ < 2 || \ |
| 1040 | (__GNUC__ == 2 && __GNUC_MINOR__ < 7) ) && \ |
| 1041 | !defined(RISCOS) |
| 1042 | #define Py_GCC_ATTRIBUTE(x) |
| 1043 | #else |
| 1044 | #define Py_GCC_ATTRIBUTE(x) __attribute__(x) |
| 1045 | #endif |
| 1046 | |
| 1047 | /* |
| 1048 | * Add PyArg_ParseTuple format where available. |
| 1049 | */ |
| 1050 | #ifdef HAVE_ATTRIBUTE_FORMAT_PARSETUPLE |
| 1051 | #define Py_FORMAT_PARSETUPLE(func,p1,p2) __attribute__((format(func,p1,p2))) |
| 1052 | #else |
| 1053 | #define Py_FORMAT_PARSETUPLE(func,p1,p2) |
| 1054 | #endif |
| 1055 | |
| 1056 | /* |
| 1057 | * Specify alignment on compilers that support it. |
| 1058 | */ |
| 1059 | #if defined(__GNUC__) && __GNUC__ >= 3 |
| 1060 | #define Py_ALIGNED(x) __attribute__((aligned(x))) |
| 1061 | #else |
| 1062 | #define Py_ALIGNED(x) |
| 1063 | #endif |
| 1064 | |
| 1065 | /* Eliminate end-of-loop code not reached warnings from SunPro C |
| 1066 | * when using do{...}while(0) macros |
| 1067 | */ |
| 1068 | #ifdef __SUNPRO_C |
| 1069 | #pragma error_messages (off,E_END_OF_LOOP_CODE_NOT_REACHED) |
| 1070 | #endif |
| 1071 | |
| 1072 | /* |
| 1073 | * Older Microsoft compilers don't support the C99 long long literal suffixes, |
| 1074 | * so these will be defined in PC/pyconfig.h for those compilers. |
| 1075 | */ |
| 1076 | #ifndef Py_LL |
| 1077 | #define Py_LL(x) x##LL |
| 1078 | #endif |
| 1079 | |
| 1080 | #ifndef Py_ULL |
| 1081 | #define Py_ULL(x) Py_LL(x##U) |
| 1082 | #endif |
| 1083 | |
| 1084 | #endif /* Py_PYPORT_H */ |