1 #ifndef Py_PYPORT_H 2 #define Py_PYPORT_H 3 4 #include "pyconfig.h" /* include for defines */ 5 6 #include <inttypes.h> 7 8 /************************************************************************** 9 Symbols and macros to supply platform-independent interfaces to basic 10 C language & library operations whose spellings vary across platforms. 11 12 Please try to make documentation here as clear as possible: by definition, 13 the stuff here is trying to illuminate C's darkest corners. 14 15 Config #defines referenced here: 16 17 SIGNED_RIGHT_SHIFT_ZERO_FILLS 18 Meaning: To be defined iff i>>j does not extend the sign bit when i is a 19 signed integral type and i < 0. 20 Used in: Py_ARITHMETIC_RIGHT_SHIFT 21 22 Py_DEBUG 23 Meaning: Extra checks compiled in for debug mode. 24 Used in: Py_SAFE_DOWNCAST 25 26 **************************************************************************/ 27 28 /* typedefs for some C9X-defined synonyms for integral types. 29 * 30 * The names in Python are exactly the same as the C9X names, except with a 31 * Py_ prefix. Until C9X is universally implemented, this is the only way 32 * to ensure that Python gets reliable names that don't conflict with names 33 * in non-Python code that are playing their own tricks to define the C9X 34 * names. 35 * 36 * NOTE: don't go nuts here! Python has no use for *most* of the C9X 37 * integral synonyms. Only define the ones we actually need. 38 */ 39 40 /* long long is required. Ensure HAVE_LONG_LONG is defined for compatibility. */ 41 #ifndef HAVE_LONG_LONG 42 #define HAVE_LONG_LONG 1 43 #endif 44 #ifndef PY_LONG_LONG 45 #define PY_LONG_LONG long long 46 /* If LLONG_MAX is defined in limits.h, use that. */ 47 #define PY_LLONG_MIN LLONG_MIN 48 #define PY_LLONG_MAX LLONG_MAX 49 #define PY_ULLONG_MAX ULLONG_MAX 50 #endif 51 52 #define PY_UINT32_T uint32_t 53 #define PY_UINT64_T uint64_t 54 55 /* Signed variants of the above */ 56 #define PY_INT32_T int32_t 57 #define PY_INT64_T int64_t 58 59 /* If PYLONG_BITS_IN_DIGIT is not defined then we'll use 30-bit digits if all 60 the necessary integer types are available, and we're on a 64-bit platform 61 (as determined by SIZEOF_VOID_P); otherwise we use 15-bit digits. */ 62 63 #ifndef PYLONG_BITS_IN_DIGIT 64 #if SIZEOF_VOID_P >= 8 65 #define PYLONG_BITS_IN_DIGIT 30 66 #else 67 #define PYLONG_BITS_IN_DIGIT 15 68 #endif 69 #endif 70 71 /* uintptr_t is the C9X name for an unsigned integral type such that a 72 * legitimate void* can be cast to uintptr_t and then back to void* again 73 * without loss of information. Similarly for intptr_t, wrt a signed 74 * integral type. 75 */ 76 typedef uintptr_t Py_uintptr_t; 77 typedef intptr_t Py_intptr_t; 78 79 /* Py_ssize_t is a signed integral type such that sizeof(Py_ssize_t) == 80 * sizeof(size_t). C99 doesn't define such a thing directly (size_t is an 81 * unsigned integral type). See PEP 353 for details. 82 */ 83 #ifdef HAVE_SSIZE_T 84 typedef ssize_t Py_ssize_t; 85 #elif SIZEOF_VOID_P == SIZEOF_SIZE_T 86 typedef Py_intptr_t Py_ssize_t; 87 #else 88 # error "Python needs a typedef for Py_ssize_t in pyport.h." 89 #endif 90 91 /* Py_hash_t is the same size as a pointer. */ 92 #define SIZEOF_PY_HASH_T SIZEOF_SIZE_T 93 typedef Py_ssize_t Py_hash_t; 94 /* Py_uhash_t is the unsigned equivalent needed to calculate numeric hash. */ 95 #define SIZEOF_PY_UHASH_T SIZEOF_SIZE_T 96 typedef size_t Py_uhash_t; 97 98 /* Only used for compatibility with code that may not be PY_SSIZE_T_CLEAN. */ 99 #ifdef PY_SSIZE_T_CLEAN 100 typedef Py_ssize_t Py_ssize_clean_t; 101 #else 102 typedef int Py_ssize_clean_t; 103 #endif 104 105 /* Largest possible value of size_t. */ 106 #define PY_SIZE_MAX SIZE_MAX 107 108 /* Largest positive value of type Py_ssize_t. */ 109 #define PY_SSIZE_T_MAX ((Py_ssize_t)(((size_t)-1)>>1)) 110 /* Smallest negative value of type Py_ssize_t. */ 111 #define PY_SSIZE_T_MIN (-PY_SSIZE_T_MAX-1) 112 113 /* PY_FORMAT_SIZE_T is a platform-specific modifier for use in a printf 114 * format to convert an argument with the width of a size_t or Py_ssize_t. 115 * C99 introduced "z" for this purpose, but not all platforms support that; 116 * e.g., MS compilers use "I" instead. 117 * 118 * These "high level" Python format functions interpret "z" correctly on 119 * all platforms (Python interprets the format string itself, and does whatever 120 * the platform C requires to convert a size_t/Py_ssize_t argument): 121 * 122 * PyBytes_FromFormat 123 * PyErr_Format 124 * PyBytes_FromFormatV 125 * PyUnicode_FromFormatV 126 * 127 * Lower-level uses require that you interpolate the correct format modifier 128 * yourself (e.g., calling printf, fprintf, sprintf, PyOS_snprintf); for 129 * example, 130 * 131 * Py_ssize_t index; 132 * fprintf(stderr, "index %" PY_FORMAT_SIZE_T "d sucks\n", index); 133 * 134 * That will expand to %ld, or %Id, or to something else correct for a 135 * Py_ssize_t on the platform. 136 */ 137 #ifndef PY_FORMAT_SIZE_T 138 # if SIZEOF_SIZE_T == SIZEOF_INT && !defined(__APPLE__) 139 # define PY_FORMAT_SIZE_T "" 140 # elif SIZEOF_SIZE_T == SIZEOF_LONG 141 # define PY_FORMAT_SIZE_T "l" 142 # elif defined(MS_WINDOWS) 143 # define PY_FORMAT_SIZE_T "I" 144 # else 145 # error "This platform's pyconfig.h needs to define PY_FORMAT_SIZE_T" 146 # endif 147 #endif 148 149 /* Py_LOCAL can be used instead of static to get the fastest possible calling 150 * convention for functions that are local to a given module. 151 * 152 * Py_LOCAL_INLINE does the same thing, and also explicitly requests inlining, 153 * for platforms that support that. 154 * 155 * If PY_LOCAL_AGGRESSIVE is defined before python.h is included, more 156 * "aggressive" inlining/optimization is enabled for the entire module. This 157 * may lead to code bloat, and may slow things down for those reasons. It may 158 * also lead to errors, if the code relies on pointer aliasing. Use with 159 * care. 160 * 161 * NOTE: You can only use this for functions that are entirely local to a 162 * module; functions that are exported via method tables, callbacks, etc, 163 * should keep using static. 164 */ 165 166 #if defined(_MSC_VER) 167 #if defined(PY_LOCAL_AGGRESSIVE) 168 /* enable more aggressive optimization for visual studio */ 169 #pragma optimize("agtw", on) 170 #endif 171 /* ignore warnings if the compiler decides not to inline a function */ 172 #pragma warning(disable: 4710) 173 /* fastest possible local call under MSVC */ 174 #define Py_LOCAL(type) static type __fastcall 175 #define Py_LOCAL_INLINE(type) static __inline type __fastcall 176 #elif defined(USE_INLINE) 177 #define Py_LOCAL(type) static type 178 #define Py_LOCAL_INLINE(type) static inline type 179 #else 180 #define Py_LOCAL(type) static type 181 #define Py_LOCAL_INLINE(type) static type 182 #endif 183 184 /* Py_MEMCPY is kept for backwards compatibility, 185 * see https://bugs.python.org/issue28126 */ 186 #define Py_MEMCPY memcpy 187 188 #include <stdlib.h> 189 190 #ifdef HAVE_IEEEFP_H 191 #include <ieeefp.h> /* needed for 'finite' declaration on some platforms */ 192 #endif 193 194 #include <math.h> /* Moved here from the math section, before extern "C" */ 195 196 /******************************************** 197 * WRAPPER FOR <time.h> and/or <sys/time.h> * 198 ********************************************/ 199 200 #ifdef TIME_WITH_SYS_TIME 201 #include <sys/time.h> 202 #include <time.h> 203 #else /* !TIME_WITH_SYS_TIME */ 204 #ifdef HAVE_SYS_TIME_H 205 #include <sys/time.h> 206 #else /* !HAVE_SYS_TIME_H */ 207 #include <time.h> 208 #endif /* !HAVE_SYS_TIME_H */ 209 #endif /* !TIME_WITH_SYS_TIME */ 210 211 212 /****************************** 213 * WRAPPER FOR <sys/select.h> * 214 ******************************/ 215 216 /* NB caller must include <sys/types.h> */ 217 218 #ifdef HAVE_SYS_SELECT_H 219 #include <sys/select.h> 220 #endif /* !HAVE_SYS_SELECT_H */ 221 222 /******************************* 223 * stat() and fstat() fiddling * 224 *******************************/ 225 226 #ifdef HAVE_SYS_STAT_H 227 #include <sys/stat.h> 228 #elif defined(HAVE_STAT_H) 229 #include <stat.h> 230 #endif 231 232 #ifndef S_IFMT 233 /* VisualAge C/C++ Failed to Define MountType Field in sys/stat.h */ 234 #define S_IFMT 0170000 235 #endif 236 237 #ifndef S_IFLNK 238 /* Windows doesn't define S_IFLNK but posixmodule.c maps 239 * IO_REPARSE_TAG_SYMLINK to S_IFLNK */ 240 # define S_IFLNK 0120000 241 #endif 242 243 #ifndef S_ISREG 244 #define S_ISREG(x) (((x) & S_IFMT) == S_IFREG) 245 #endif 246 247 #ifndef S_ISDIR 248 #define S_ISDIR(x) (((x) & S_IFMT) == S_IFDIR) 249 #endif 250 251 #ifndef S_ISCHR 252 #define S_ISCHR(x) (((x) & S_IFMT) == S_IFCHR) 253 #endif 254 255 #ifdef __cplusplus 256 /* Move this down here since some C++ #include's don't like to be included 257 inside an extern "C" */ 258 extern "C" { 259 #endif 260 261 262 /* Py_ARITHMETIC_RIGHT_SHIFT 263 * C doesn't define whether a right-shift of a signed integer sign-extends 264 * or zero-fills. Here a macro to force sign extension: 265 * Py_ARITHMETIC_RIGHT_SHIFT(TYPE, I, J) 266 * Return I >> J, forcing sign extension. Arithmetically, return the 267 * floor of I/2**J. 268 * Requirements: 269 * I should have signed integer type. In the terminology of C99, this can 270 * be either one of the five standard signed integer types (signed char, 271 * short, int, long, long long) or an extended signed integer type. 272 * J is an integer >= 0 and strictly less than the number of bits in the 273 * type of I (because C doesn't define what happens for J outside that 274 * range either). 275 * TYPE used to specify the type of I, but is now ignored. It's been left 276 * in for backwards compatibility with versions <= 2.6 or 3.0. 277 * Caution: 278 * I may be evaluated more than once. 279 */ 280 #ifdef SIGNED_RIGHT_SHIFT_ZERO_FILLS 281 #define Py_ARITHMETIC_RIGHT_SHIFT(TYPE, I, J) \ 282 ((I) < 0 ? -1-((-1-(I)) >> (J)) : (I) >> (J)) 283 #else 284 #define Py_ARITHMETIC_RIGHT_SHIFT(TYPE, I, J) ((I) >> (J)) 285 #endif 286 287 /* Py_FORCE_EXPANSION(X) 288 * "Simply" returns its argument. However, macro expansions within the 289 * argument are evaluated. This unfortunate trickery is needed to get 290 * token-pasting to work as desired in some cases. 291 */ 292 #define Py_FORCE_EXPANSION(X) X 293 294 /* Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW) 295 * Cast VALUE to type NARROW from type WIDE. In Py_DEBUG mode, this 296 * assert-fails if any information is lost. 297 * Caution: 298 * VALUE may be evaluated more than once. 299 */ 300 #ifdef Py_DEBUG 301 #define Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW) \ 302 (assert((WIDE)(NARROW)(VALUE) == (VALUE)), (NARROW)(VALUE)) 303 #else 304 #define Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW) (NARROW)(VALUE) 305 #endif 306 307 /* Py_SET_ERRNO_ON_MATH_ERROR(x) 308 * If a libm function did not set errno, but it looks like the result 309 * overflowed or not-a-number, set errno to ERANGE or EDOM. Set errno 310 * to 0 before calling a libm function, and invoke this macro after, 311 * passing the function result. 312 * Caution: 313 * This isn't reliable. See Py_OVERFLOWED comments. 314 * X is evaluated more than once. 315 */ 316 #if defined(__FreeBSD__) || defined(__OpenBSD__) || (defined(__hpux) && defined(__ia64)) 317 #define _Py_SET_EDOM_FOR_NAN(X) if (isnan(X)) errno = EDOM; 318 #else 319 #define _Py_SET_EDOM_FOR_NAN(X) ; 320 #endif 321 #define Py_SET_ERRNO_ON_MATH_ERROR(X) \ 322 do { \ 323 if (errno == 0) { \ 324 if ((X) == Py_HUGE_VAL || (X) == -Py_HUGE_VAL) \ 325 errno = ERANGE; \ 326 else _Py_SET_EDOM_FOR_NAN(X) \ 327 } \ 328 } while(0) 329 330 /* Py_SET_ERANGE_ON_OVERFLOW(x) 331 * An alias of Py_SET_ERRNO_ON_MATH_ERROR for backward-compatibility. 332 */ 333 #define Py_SET_ERANGE_IF_OVERFLOW(X) Py_SET_ERRNO_ON_MATH_ERROR(X) 334 335 /* Py_ADJUST_ERANGE1(x) 336 * Py_ADJUST_ERANGE2(x, y) 337 * Set errno to 0 before calling a libm function, and invoke one of these 338 * macros after, passing the function result(s) (Py_ADJUST_ERANGE2 is useful 339 * for functions returning complex results). This makes two kinds of 340 * adjustments to errno: (A) If it looks like the platform libm set 341 * errno=ERANGE due to underflow, clear errno. (B) If it looks like the 342 * platform libm overflowed but didn't set errno, force errno to ERANGE. In 343 * effect, we're trying to force a useful implementation of C89 errno 344 * behavior. 345 * Caution: 346 * This isn't reliable. See Py_OVERFLOWED comments. 347 * X and Y may be evaluated more than once. 348 */ 349 #define Py_ADJUST_ERANGE1(X) \ 350 do { \ 351 if (errno == 0) { \ 352 if ((X) == Py_HUGE_VAL || (X) == -Py_HUGE_VAL) \ 353 errno = ERANGE; \ 354 } \ 355 else if (errno == ERANGE && (X) == 0.0) \ 356 errno = 0; \ 357 } while(0) 358 359 #define Py_ADJUST_ERANGE2(X, Y) \ 360 do { \ 361 if ((X) == Py_HUGE_VAL || (X) == -Py_HUGE_VAL || \ 362 (Y) == Py_HUGE_VAL || (Y) == -Py_HUGE_VAL) { \ 363 if (errno == 0) \ 364 errno = ERANGE; \ 365 } \ 366 else if (errno == ERANGE) \ 367 errno = 0; \ 368 } while(0) 369 370 /* The functions _Py_dg_strtod and _Py_dg_dtoa in Python/dtoa.c (which are 371 * required to support the short float repr introduced in Python 3.1) require 372 * that the floating-point unit that's being used for arithmetic operations 373 * on C doubles is set to use 53-bit precision. It also requires that the 374 * FPU rounding mode is round-half-to-even, but that's less often an issue. 375 * 376 * If your FPU isn't already set to 53-bit precision/round-half-to-even, and 377 * you want to make use of _Py_dg_strtod and _Py_dg_dtoa, then you should 378 * 379 * #define HAVE_PY_SET_53BIT_PRECISION 1 380 * 381 * and also give appropriate definitions for the following three macros: 382 * 383 * _PY_SET_53BIT_PRECISION_START : store original FPU settings, and 384 * set FPU to 53-bit precision/round-half-to-even 385 * _PY_SET_53BIT_PRECISION_END : restore original FPU settings 386 * _PY_SET_53BIT_PRECISION_HEADER : any variable declarations needed to 387 * use the two macros above. 388 * 389 * The macros are designed to be used within a single C function: see 390 * Python/pystrtod.c for an example of their use. 391 */ 392 393 /* get and set x87 control word for gcc/x86 */ 394 #ifdef HAVE_GCC_ASM_FOR_X87 395 #define HAVE_PY_SET_53BIT_PRECISION 1 396 /* _Py_get/set_387controlword functions are defined in Python/pymath.c */ 397 #define _Py_SET_53BIT_PRECISION_HEADER \ 398 unsigned short old_387controlword, new_387controlword 399 #define _Py_SET_53BIT_PRECISION_START \ 400 do { \ 401 old_387controlword = _Py_get_387controlword(); \ 402 new_387controlword = (old_387controlword & ~0x0f00) | 0x0200; \ 403 if (new_387controlword != old_387controlword) \ 404 _Py_set_387controlword(new_387controlword); \ 405 } while (0) 406 #define _Py_SET_53BIT_PRECISION_END \ 407 if (new_387controlword != old_387controlword) \ 408 _Py_set_387controlword(old_387controlword) 409 #endif 410 411 /* get and set x87 control word for VisualStudio/x86 */ 412 #if defined(_MSC_VER) && !defined(_WIN64) /* x87 not supported in 64-bit */ 413 #define HAVE_PY_SET_53BIT_PRECISION 1 414 #define _Py_SET_53BIT_PRECISION_HEADER \ 415 unsigned int old_387controlword, new_387controlword, out_387controlword 416 /* We use the __control87_2 function to set only the x87 control word. 417 The SSE control word is unaffected. */ 418 #define _Py_SET_53BIT_PRECISION_START \ 419 do { \ 420 __control87_2(0, 0, &old_387controlword, NULL); \ 421 new_387controlword = \ 422 (old_387controlword & ~(_MCW_PC | _MCW_RC)) | (_PC_53 | _RC_NEAR); \ 423 if (new_387controlword != old_387controlword) \ 424 __control87_2(new_387controlword, _MCW_PC | _MCW_RC, \ 425 &out_387controlword, NULL); \ 426 } while (0) 427 #define _Py_SET_53BIT_PRECISION_END \ 428 do { \ 429 if (new_387controlword != old_387controlword) \ 430 __control87_2(old_387controlword, _MCW_PC | _MCW_RC, \ 431 &out_387controlword, NULL); \ 432 } while (0) 433 #endif 434 435 #ifdef HAVE_GCC_ASM_FOR_MC68881 436 #define HAVE_PY_SET_53BIT_PRECISION 1 437 #define _Py_SET_53BIT_PRECISION_HEADER \ 438 unsigned int old_fpcr, new_fpcr 439 #define _Py_SET_53BIT_PRECISION_START \ 440 do { \ 441 __asm__ ("fmove.l %%fpcr,%0" : "=g" (old_fpcr)); \ 442 /* Set double precision / round to nearest. */ \ 443 new_fpcr = (old_fpcr & ~0xf0) | 0x80; \ 444 if (new_fpcr != old_fpcr) \ 445 __asm__ volatile ("fmove.l %0,%%fpcr" : : "g" (new_fpcr)); \ 446 } while (0) 447 #define _Py_SET_53BIT_PRECISION_END \ 448 do { \ 449 if (new_fpcr != old_fpcr) \ 450 __asm__ volatile ("fmove.l %0,%%fpcr" : : "g" (old_fpcr)); \ 451 } while (0) 452 #endif 453 454 /* default definitions are empty */ 455 #ifndef HAVE_PY_SET_53BIT_PRECISION 456 #define _Py_SET_53BIT_PRECISION_HEADER 457 #define _Py_SET_53BIT_PRECISION_START 458 #define _Py_SET_53BIT_PRECISION_END 459 #endif 460 461 /* If we can't guarantee 53-bit precision, don't use the code 462 in Python/dtoa.c, but fall back to standard code. This 463 means that repr of a float will be long (17 sig digits). 464 465 Realistically, there are two things that could go wrong: 466 467 (1) doubles aren't IEEE 754 doubles, or 468 (2) we're on x86 with the rounding precision set to 64-bits 469 (extended precision), and we don't know how to change 470 the rounding precision. 471 */ 472 473 #if !defined(DOUBLE_IS_LITTLE_ENDIAN_IEEE754) && \ 474 !defined(DOUBLE_IS_BIG_ENDIAN_IEEE754) && \ 475 !defined(DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754) 476 #define PY_NO_SHORT_FLOAT_REPR 477 #endif 478 479 /* double rounding is symptomatic of use of extended precision on x86. If 480 we're seeing double rounding, and we don't have any mechanism available for 481 changing the FPU rounding precision, then don't use Python/dtoa.c. */ 482 #if defined(X87_DOUBLE_ROUNDING) && !defined(HAVE_PY_SET_53BIT_PRECISION) 483 #define PY_NO_SHORT_FLOAT_REPR 484 #endif 485 486 487 /* Py_DEPRECATED(version) 488 * Declare a variable, type, or function deprecated. 489 * Usage: 490 * extern int old_var Py_DEPRECATED(2.3); 491 * typedef int T1 Py_DEPRECATED(2.4); 492 * extern int x() Py_DEPRECATED(2.5); 493 */ 494 #if defined(__GNUC__) && ((__GNUC__ >= 4) || \ 495 (__GNUC__ == 3) && (__GNUC_MINOR__ >= 1)) 496 #define Py_DEPRECATED(VERSION_UNUSED) __attribute__((__deprecated__)) 497 #else 498 #define Py_DEPRECATED(VERSION_UNUSED) 499 #endif 500 501 /************************************************************************** 502 Prototypes that are missing from the standard include files on some systems 503 (and possibly only some versions of such systems.) 504 505 Please be conservative with adding new ones, document them and enclose them 506 in platform-specific #ifdefs. 507 **************************************************************************/ 508 509 #ifdef SOLARIS 510 /* Unchecked */ 511 extern int gethostname(char *, int); 512 #endif 513 514 #ifdef HAVE__GETPTY 515 #include <sys/types.h> /* we need to import mode_t */ 516 extern char * _getpty(int *, int, mode_t, int); 517 #endif 518 519 /* On QNX 6, struct termio must be declared by including sys/termio.h 520 if TCGETA, TCSETA, TCSETAW, or TCSETAF are used. sys/termio.h must 521 be included before termios.h or it will generate an error. */ 522 #if defined(HAVE_SYS_TERMIO_H) && !defined(__hpux) 523 #include <sys/termio.h> 524 #endif 525 526 #if defined(HAVE_OPENPTY) || defined(HAVE_FORKPTY) 527 #if !defined(HAVE_PTY_H) && !defined(HAVE_LIBUTIL_H) 528 /* BSDI does not supply a prototype for the 'openpty' and 'forkpty' 529 functions, even though they are included in libutil. */ 530 #include <termios.h> 531 extern int openpty(int *, int *, char *, struct termios *, struct winsize *); 532 extern pid_t forkpty(int *, char *, struct termios *, struct winsize *); 533 #endif /* !defined(HAVE_PTY_H) && !defined(HAVE_LIBUTIL_H) */ 534 #endif /* defined(HAVE_OPENPTY) || defined(HAVE_FORKPTY) */ 535 536 537 /* On 4.4BSD-descendants, ctype functions serves the whole range of 538 * wchar_t character set rather than single byte code points only. 539 * This characteristic can break some operations of string object 540 * including str.upper() and str.split() on UTF-8 locales. This 541 * workaround was provided by Tim Robbins of FreeBSD project. 542 */ 543 544 #ifdef __FreeBSD__ 545 #include <osreldate.h> 546 #if (__FreeBSD_version >= 500040 && __FreeBSD_version < 602113) || \ 547 (__FreeBSD_version >= 700000 && __FreeBSD_version < 700054) || \ 548 (__FreeBSD_version >= 800000 && __FreeBSD_version < 800001) 549 # define _PY_PORT_CTYPE_UTF8_ISSUE 550 #endif 551 #endif 552 553 554 #if defined(__APPLE__) 555 # define _PY_PORT_CTYPE_UTF8_ISSUE 556 #endif 557 558 #ifdef _PY_PORT_CTYPE_UTF8_ISSUE 559 #ifndef __cplusplus 560 /* The workaround below is unsafe in C++ because 561 * the <locale> defines these symbols as real functions, 562 * with a slightly different signature. 563 * See issue #10910 564 */ 565 #include <ctype.h> 566 #include <wctype.h> 567 #undef isalnum 568 #define isalnum(c) iswalnum(btowc(c)) 569 #undef isalpha 570 #define isalpha(c) iswalpha(btowc(c)) 571 #undef islower 572 #define islower(c) iswlower(btowc(c)) 573 #undef isspace 574 #define isspace(c) iswspace(btowc(c)) 575 #undef isupper 576 #define isupper(c) iswupper(btowc(c)) 577 #undef tolower 578 #define tolower(c) towlower(btowc(c)) 579 #undef toupper 580 #define toupper(c) towupper(btowc(c)) 581 #endif 582 #endif 583 584 585 /* Declarations for symbol visibility. 586 587 PyAPI_FUNC(type): Declares a public Python API function and return type 588 PyAPI_DATA(type): Declares public Python data and its type 589 PyMODINIT_FUNC: A Python module init function. If these functions are 590 inside the Python core, they are private to the core. 591 If in an extension module, it may be declared with 592 external linkage depending on the platform. 593 594 As a number of platforms support/require "__declspec(dllimport/dllexport)", 595 we support a HAVE_DECLSPEC_DLL macro to save duplication. 596 */ 597 598 /* 599 All windows ports, except cygwin, are handled in PC/pyconfig.h. 600 601 Cygwin is the only other autoconf platform requiring special 602 linkage handling and it uses __declspec(). 603 */ 604 #if defined(__CYGWIN__) 605 # define HAVE_DECLSPEC_DLL 606 #endif 607 608 /* only get special linkage if built as shared or platform is Cygwin */ 609 #if defined(Py_ENABLE_SHARED) || defined(__CYGWIN__) 610 # if defined(HAVE_DECLSPEC_DLL) 611 # ifdef Py_BUILD_CORE 612 # define PyAPI_FUNC(RTYPE) __declspec(dllexport) RTYPE 613 # define PyAPI_DATA(RTYPE) extern __declspec(dllexport) RTYPE 614 /* module init functions inside the core need no external linkage */ 615 /* except for Cygwin to handle embedding */ 616 # if defined(__CYGWIN__) 617 # define PyMODINIT_FUNC __declspec(dllexport) PyObject* 618 # else /* __CYGWIN__ */ 619 # define PyMODINIT_FUNC PyObject* 620 # endif /* __CYGWIN__ */ 621 # else /* Py_BUILD_CORE */ 622 /* Building an extension module, or an embedded situation */ 623 /* public Python functions and data are imported */ 624 /* Under Cygwin, auto-import functions to prevent compilation */ 625 /* failures similar to those described at the bottom of 4.1: */ 626 /* http://docs.python.org/extending/windows.html#a-cookbook-approach */ 627 # if !defined(__CYGWIN__) 628 # define PyAPI_FUNC(RTYPE) __declspec(dllimport) RTYPE 629 # endif /* !__CYGWIN__ */ 630 # define PyAPI_DATA(RTYPE) extern __declspec(dllimport) RTYPE 631 /* module init functions outside the core must be exported */ 632 # if defined(__cplusplus) 633 # define PyMODINIT_FUNC extern "C" __declspec(dllexport) PyObject* 634 # else /* __cplusplus */ 635 # define PyMODINIT_FUNC __declspec(dllexport) PyObject* 636 # endif /* __cplusplus */ 637 # endif /* Py_BUILD_CORE */ 638 # endif /* HAVE_DECLSPEC */ 639 #endif /* Py_ENABLE_SHARED */ 640 641 /* If no external linkage macros defined by now, create defaults */ 642 #ifndef PyAPI_FUNC 643 # define PyAPI_FUNC(RTYPE) RTYPE 644 #endif 645 #ifndef PyAPI_DATA 646 # define PyAPI_DATA(RTYPE) extern RTYPE 647 #endif 648 #ifndef PyMODINIT_FUNC 649 # if defined(__cplusplus) 650 # define PyMODINIT_FUNC extern "C" PyObject* 651 # else /* __cplusplus */ 652 # define PyMODINIT_FUNC PyObject* 653 # endif /* __cplusplus */ 654 #endif 655 656 /* limits.h constants that may be missing */ 657 658 #ifndef INT_MAX 659 #define INT_MAX 2147483647 660 #endif 661 662 #ifndef LONG_MAX 663 #if SIZEOF_LONG == 4 664 #define LONG_MAX 0X7FFFFFFFL 665 #elif SIZEOF_LONG == 8 666 #define LONG_MAX 0X7FFFFFFFFFFFFFFFL 667 #else 668 #error "could not set LONG_MAX in pyport.h" 669 #endif 670 #endif 671 672 #ifndef LONG_MIN 673 #define LONG_MIN (-LONG_MAX-1) 674 #endif 675 676 #ifndef LONG_BIT 677 #define LONG_BIT (8 * SIZEOF_LONG) 678 #endif 679 680 #if LONG_BIT != 8 * SIZEOF_LONG 681 /* 04-Oct-2000 LONG_BIT is apparently (mis)defined as 64 on some recent 682 * 32-bit platforms using gcc. We try to catch that here at compile-time 683 * rather than waiting for integer multiplication to trigger bogus 684 * overflows. 685 */ 686 #error "LONG_BIT definition appears wrong for platform (bad gcc/glibc config?)." 687 #endif 688 689 #ifdef __cplusplus 690 } 691 #endif 692 693 /* 694 * Hide GCC attributes from compilers that don't support them. 695 */ 696 #if (!defined(__GNUC__) || __GNUC__ < 2 || \ 697 (__GNUC__ == 2 && __GNUC_MINOR__ < 7) ) 698 #define Py_GCC_ATTRIBUTE(x) 699 #else 700 #define Py_GCC_ATTRIBUTE(x) __attribute__(x) 701 #endif 702 703 /* 704 * Specify alignment on compilers that support it. 705 */ 706 #if defined(__GNUC__) && __GNUC__ >= 3 707 #define Py_ALIGNED(x) __attribute__((aligned(x))) 708 #else 709 #define Py_ALIGNED(x) 710 #endif 711 712 /* Eliminate end-of-loop code not reached warnings from SunPro C 713 * when using do{...}while(0) macros 714 */ 715 #ifdef __SUNPRO_C 716 #pragma error_messages (off,E_END_OF_LOOP_CODE_NOT_REACHED) 717 #endif 718 719 #ifndef Py_LL 720 #define Py_LL(x) x##LL 721 #endif 722 723 #ifndef Py_ULL 724 #define Py_ULL(x) Py_LL(x##U) 725 #endif 726 727 #define Py_VA_COPY va_copy 728 729 /* 730 * Convenient macros to deal with endianness of the platform. WORDS_BIGENDIAN is 731 * detected by configure and defined in pyconfig.h. The code in pyconfig.h 732 * also takes care of Apple's universal builds. 733 */ 734 735 #ifdef WORDS_BIGENDIAN 736 #define PY_BIG_ENDIAN 1 737 #define PY_LITTLE_ENDIAN 0 738 #else 739 #define PY_BIG_ENDIAN 0 740 #define PY_LITTLE_ENDIAN 1 741 #endif 742 743 #ifdef Py_BUILD_CORE 744 /* 745 * Macros to protect CRT calls against instant termination when passed an 746 * invalid parameter (issue23524). 747 */ 748 #if defined _MSC_VER && _MSC_VER >= 1900 749 750 extern _invalid_parameter_handler _Py_silent_invalid_parameter_handler; 751 #define _Py_BEGIN_SUPPRESS_IPH { _invalid_parameter_handler _Py_old_handler = \ 752 _set_thread_local_invalid_parameter_handler(_Py_silent_invalid_parameter_handler); 753 #define _Py_END_SUPPRESS_IPH _set_thread_local_invalid_parameter_handler(_Py_old_handler); } 754 755 #else 756 757 #define _Py_BEGIN_SUPPRESS_IPH 758 #define _Py_END_SUPPRESS_IPH 759 760 #endif /* _MSC_VER >= 1900 */ 761 #endif /* Py_BUILD_CORE */ 762 763 #ifdef __ANDROID__ 764 #include <android/api-level.h> 765 #endif 766 767 #endif /* Py_PYPORT_H */ 768
