2 Symbols and macros to supply platform-independent interfaces to basic
3 C language & library operations whose spellings vary across platforms.
5 Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>
6 This program and the accompanying materials are licensed and made available under
7 the terms and conditions of the BSD License that accompanies this distribution.
8 The full text of the license may be found at
9 http://opensource.org/licenses/bsd-license.
11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
17 #include "pyconfig.h" /* include for defines */
19 /* Some versions of HP-UX & Solaris need inttypes.h for int32_t,
21 #ifdef HAVE_INTTYPES_H
29 /**************************************************************************
30 Symbols and macros to supply platform-independent interfaces to basic
31 C language & library operations whose spellings vary across platforms.
33 Please try to make documentation here as clear as possible: by definition,
34 the stuff here is trying to illuminate C's darkest corners.
36 Config #defines referenced here:
38 SIGNED_RIGHT_SHIFT_ZERO_FILLS
39 Meaning: To be defined iff i>>j does not extend the sign bit when i is a
40 signed integral type and i < 0.
41 Used in: Py_ARITHMETIC_RIGHT_SHIFT
44 Meaning: Extra checks compiled in for debug mode.
45 Used in: Py_SAFE_DOWNCAST
48 Meaning: The C9X type uintptr_t is supported by the compiler
52 Meaning: The compiler supports the C type "long long"
55 **************************************************************************/
58 /* For backward compatibility only. Obsolete, do not use. */
59 #ifdef HAVE_PROTOTYPES
62 #define Py_PROTO(x) ()
65 #define Py_FPROTO(x) Py_PROTO(x)
68 /* typedefs for some C9X-defined synonyms for integral types.
70 * The names in Python are exactly the same as the C9X names, except with a
71 * Py_ prefix. Until C9X is universally implemented, this is the only way
72 * to ensure that Python gets reliable names that don't conflict with names
73 * in non-Python code that are playing their own tricks to define the C9X
76 * NOTE: don't go nuts here! Python has no use for *most* of the C9X
77 * integral synonyms. Only define the ones we actually need.
82 #define PY_LONG_LONG long long
83 #if defined(LLONG_MAX)
84 /* If LLONG_MAX is defined in limits.h, use that. */
85 #define PY_LLONG_MIN LLONG_MIN
86 #define PY_LLONG_MAX LLONG_MAX
87 #define PY_ULLONG_MAX ULLONG_MAX
88 #elif defined(__LONG_LONG_MAX__)
89 /* Otherwise, if GCC has a builtin define, use that. */
90 #define PY_LLONG_MAX __LONG_LONG_MAX__
91 #define PY_LLONG_MIN (-PY_LLONG_MAX-1)
92 #define PY_ULLONG_MAX (__LONG_LONG_MAX__*2ULL + 1ULL)
94 /* Otherwise, rely on two's complement. */
95 #define PY_ULLONG_MAX (~0ULL)
96 #define PY_LLONG_MAX ((long long)(PY_ULLONG_MAX>>1))
97 #define PY_LLONG_MIN (-PY_LLONG_MAX-1)
98 #endif /* LLONG_MAX */
100 #endif /* HAVE_LONG_LONG */
102 /* a build with 30-bit digits for Python long integers needs an exact-width
103 * 32-bit unsigned integer type to store those digits. (We could just use
104 * type 'unsigned long', but that would be wasteful on a system where longs
105 * are 64-bits.) On Unix systems, the autoconf macro AC_TYPE_UINT32_T defines
106 * uint32_t to be such a type unless stdint.h or inttypes.h defines uint32_t.
107 * However, it doesn't set HAVE_UINT32_T, so we do that here.
109 #if (defined UINT32_MAX || defined uint32_t)
111 #define HAVE_UINT32_T 1
112 #define PY_UINT32_T uint32_t
116 /* Macros for a 64-bit unsigned integer type; used for type 'twodigits' in the
117 * long integer implementation, when 30-bit digits are enabled.
119 #if (defined UINT64_MAX || defined uint64_t)
121 #define HAVE_UINT64_T 1
122 #define PY_UINT64_T uint64_t
126 /* Signed variants of the above */
127 #if (defined INT32_MAX || defined int32_t)
129 #define HAVE_INT32_T 1
130 #define PY_INT32_T int32_t
133 #if (defined INT64_MAX || defined int64_t)
135 #define HAVE_INT64_T 1
136 #define PY_INT64_T int64_t
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. */
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
149 #define PYLONG_BITS_IN_DIGIT 15
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
158 #ifdef HAVE_UINTPTR_T
159 typedef uintptr_t Py_uintptr_t
;
160 typedef intptr_t Py_intptr_t
;
162 #elif SIZEOF_VOID_P <= SIZEOF_INT
163 typedef unsigned int Py_uintptr_t
;
164 typedef int Py_intptr_t
;
166 #elif SIZEOF_VOID_P <= SIZEOF_LONG
167 typedef unsigned long Py_uintptr_t
;
168 typedef long Py_intptr_t
;
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
;
175 # error "Python needs a typedef for Py_uintptr_t in pyport.h."
176 #endif /* HAVE_UINTPTR_T */
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.
183 typedef ssize_t Py_ssize_t
;
184 #elif SIZEOF_VOID_P == SIZEOF_SIZE_T
185 typedef Py_intptr_t Py_ssize_t
;
187 # error "Python needs a typedef for Py_ssize_t in pyport.h."
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. */
196 #define PY_SIZE_MAX SIZE_MAX
198 #define PY_SIZE_MAX ((size_t)-1)
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)
206 #if SIZEOF_PID_T > SIZEOF_LONG
207 # error "Python doesn't support sizeof(pid_t) > sizeof(long)"
210 /* PY_FORMAT_SIZE_T is a platform-specific modifier for use in a printf
211 * format to convert an argument with the width of a size_t or Py_ssize_t.
212 * C99 introduced "z" for this purpose, but not all platforms support that;
213 * e.g., MS compilers use "I" instead.
215 * These "high level" Python format functions interpret "z" correctly on
216 * all platforms (Python interprets the format string itself, and does whatever
217 * the platform C requires to convert a size_t/Py_ssize_t argument):
219 * PyString_FromFormat
221 * PyString_FromFormatV
223 * Lower-level uses require that you interpolate the correct format modifier
224 * yourself (e.g., calling printf, fprintf, sprintf, PyOS_snprintf); for
228 * fprintf(stderr, "index %" PY_FORMAT_SIZE_T "d sucks\n", index);
230 * That will expand to %ld, or %Id, or to something else correct for a
231 * Py_ssize_t on the platform.
233 #ifndef PY_FORMAT_SIZE_T
234 # if SIZEOF_SIZE_T == SIZEOF_INT && !defined(__APPLE__)
235 # define PY_FORMAT_SIZE_T ""
236 # elif SIZEOF_SIZE_T == SIZEOF_LONG
237 # define PY_FORMAT_SIZE_T "l"
238 # elif defined(MS_WINDOWS)
239 # define PY_FORMAT_SIZE_T "I"
241 # error "This platform's pyconfig.h needs to define PY_FORMAT_SIZE_T"
245 /* PY_FORMAT_LONG_LONG is analogous to PY_FORMAT_SIZE_T above, but for
246 * the long long type instead of the size_t type. It's only available
247 * when HAVE_LONG_LONG is defined. The "high level" Python format
248 * functions listed above will interpret "lld" or "llu" correctly on
251 #ifdef HAVE_LONG_LONG
252 # ifndef PY_FORMAT_LONG_LONG
253 # if defined(MS_WIN64) || defined(MS_WINDOWS)
254 # define PY_FORMAT_LONG_LONG "I64"
256 # error "This platform's pyconfig.h needs to define PY_FORMAT_LONG_LONG"
261 /* Py_LOCAL can be used instead of static to get the fastest possible calling
262 * convention for functions that are local to a given module.
264 * Py_LOCAL_INLINE does the same thing, and also explicitly requests inlining,
265 * for platforms that support that.
267 * If PY_LOCAL_AGGRESSIVE is defined before python.h is included, more
268 * "aggressive" inlining/optimizaion is enabled for the entire module. This
269 * may lead to code bloat, and may slow things down for those reasons. It may
270 * also lead to errors, if the code relies on pointer aliasing. Use with
273 * NOTE: You can only use this for functions that are entirely local to a
274 * module; functions that are exported via method tables, callbacks, etc,
275 * should keep using static.
278 #undef USE_INLINE /* XXX - set via configure? */
280 #if defined(_MSC_VER)
281 #if defined(PY_LOCAL_AGGRESSIVE)
282 /* enable more aggressive optimization for visual studio */
283 //#pragma optimize("agtw", on)
284 #pragma optimize("gt", on) // a and w are not legal for VS2005
286 /* ignore warnings if the compiler decides not to inline a function */
287 #pragma warning(disable: 4710)
288 /* fastest possible local call under MSVC */
289 #define Py_LOCAL(type) static type __fastcall
290 #define Py_LOCAL_INLINE(type) static __inline type __fastcall
291 #elif defined(USE_INLINE)
292 #define Py_LOCAL(type) static type
293 #define Py_LOCAL_INLINE(type) static inline type
295 #define Py_LOCAL(type) static type
296 #define Py_LOCAL_INLINE(type) static type
299 /* Py_MEMCPY can be used instead of memcpy in cases where the copied blocks
300 * are often very short. While most platforms have highly optimized code for
301 * large transfers, the setup costs for memcpy are often quite high. MEMCPY
302 * solves this by doing short copies "in line".
305 #if defined(_MSC_VER)
306 #define Py_MEMCPY(target, source, length) do { \
307 size_t i_, n_ = (length); \
308 char *t_ = (void*) (target); \
309 const char *s_ = (void*) (source); \
311 memcpy(t_, s_, n_); \
313 for (i_ = 0; i_ < n_; i_++) \
317 #define Py_MEMCPY memcpy
323 #include <ieeefp.h> /* needed for 'finite' declaration on some platforms */
326 #include <math.h> /* Moved here from the math section, before extern "C" */
328 /********************************************
329 * WRAPPER FOR <time.h> and/or <sys/time.h> *
330 ********************************************/
332 #ifdef TIME_WITH_SYS_TIME
333 #include <sys/time.h>
335 #else /* !TIME_WITH_SYS_TIME */
336 #ifdef HAVE_SYS_TIME_H
337 #include <sys/time.h>
338 #else /* !HAVE_SYS_TIME_H */
340 #endif /* !HAVE_SYS_TIME_H */
341 #endif /* !TIME_WITH_SYS_TIME */
344 /******************************
345 * WRAPPER FOR <sys/select.h> *
346 ******************************/
348 /* NB caller must include <sys/types.h> */
350 #ifdef HAVE_SYS_SELECT_H
352 #include <sys/select.h>
354 #endif /* !HAVE_SYS_SELECT_H */
356 /*******************************
357 * stat() and fstat() fiddling *
358 *******************************/
360 /* We expect that stat and fstat exist on most systems.
361 * It's confirmed on Unix, Mac and Windows.
362 * If you don't have them, add
363 * #define DONT_HAVE_STAT
365 * #define DONT_HAVE_FSTAT
366 * to your pyconfig.h. Python code beyond this should check HAVE_STAT and
367 * HAVE_FSTAT instead.
369 * #define HAVE_SYS_STAT_H
370 * if <sys/stat.h> exists on your platform, and
371 * #define HAVE_STAT_H
374 #ifndef DONT_HAVE_STAT
378 #ifndef DONT_HAVE_FSTAT
383 #include <sys/types.h>
384 #include "unixstuff.h"
387 #ifdef HAVE_SYS_STAT_H
388 #if defined(PYOS_OS2) && defined(PYCC_GCC)
389 #include <sys/types.h>
391 #include <sys/stat.h>
392 #elif defined(HAVE_STAT_H)
396 #if defined(PYCC_VACPP)
397 /* VisualAge C/C++ Failed to Define MountType Field in sys/stat.h */
398 #define S_IFMT (S_IFDIR|S_IFCHR|S_IFREG)
402 #define S_ISREG(x) (((x) & S_IFMT) == S_IFREG)
406 #define S_ISDIR(x) (((x) & S_IFMT) == S_IFDIR)
411 /* Move this down here since some C++ #include's don't like to be included
412 inside an extern "C" */
417 /* Py_ARITHMETIC_RIGHT_SHIFT
418 * C doesn't define whether a right-shift of a signed integer sign-extends
419 * or zero-fills. Here a macro to force sign extension:
420 * Py_ARITHMETIC_RIGHT_SHIFT(TYPE, I, J)
421 * Return I >> J, forcing sign extension. Arithmetically, return the
424 * I should have signed integer type. In the terminology of C99, this can
425 * be either one of the five standard signed integer types (signed char,
426 * short, int, long, long long) or an extended signed integer type.
427 * J is an integer >= 0 and strictly less than the number of bits in the
428 * type of I (because C doesn't define what happens for J outside that
430 * TYPE used to specify the type of I, but is now ignored. It's been left
431 * in for backwards compatibility with versions <= 2.6 or 3.0.
433 * I may be evaluated more than once.
435 #ifdef SIGNED_RIGHT_SHIFT_ZERO_FILLS
436 #define Py_ARITHMETIC_RIGHT_SHIFT(TYPE, I, J) \
437 ((I) < 0 ? -1-((-1-(I)) >> (J)) : (I) >> (J))
439 #define Py_ARITHMETIC_RIGHT_SHIFT(TYPE, I, J) ((I) >> (J))
442 /* Py_FORCE_EXPANSION(X)
443 * "Simply" returns its argument. However, macro expansions within the
444 * argument are evaluated. This unfortunate trickery is needed to get
445 * token-pasting to work as desired in some cases.
447 #define Py_FORCE_EXPANSION(X) X
449 /* Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW)
450 * Cast VALUE to type NARROW from type WIDE. In Py_DEBUG mode, this
451 * assert-fails if any information is lost.
453 * VALUE may be evaluated more than once.
456 #define Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW) \
457 (assert((WIDE)(NARROW)(VALUE) == (VALUE)), (NARROW)(VALUE))
459 #define Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW) (NARROW)(VALUE)
462 /* Py_SET_ERRNO_ON_MATH_ERROR(x)
463 * If a libm function did not set errno, but it looks like the result
464 * overflowed or not-a-number, set errno to ERANGE or EDOM. Set errno
465 * to 0 before calling a libm function, and invoke this macro after,
466 * passing the function result.
468 * This isn't reliable. See Py_OVERFLOWED comments.
469 * X is evaluated more than once.
471 #if defined(__FreeBSD__) || defined(__OpenBSD__) || (defined(__hpux) && defined(__ia64))
472 #define _Py_SET_EDOM_FOR_NAN(X) if (isnan(X)) errno = EDOM;
474 #define _Py_SET_EDOM_FOR_NAN(X) ;
476 #define Py_SET_ERRNO_ON_MATH_ERROR(X) \
479 if ((X) == Py_HUGE_VAL || (X) == -Py_HUGE_VAL) \
481 else _Py_SET_EDOM_FOR_NAN(X) \
485 /* Py_SET_ERANGE_ON_OVERFLOW(x)
486 * An alias of Py_SET_ERRNO_ON_MATH_ERROR for backward-compatibility.
488 #define Py_SET_ERANGE_IF_OVERFLOW(X) Py_SET_ERRNO_ON_MATH_ERROR(X)
490 /* Py_ADJUST_ERANGE1(x)
491 * Py_ADJUST_ERANGE2(x, y)
492 * Set errno to 0 before calling a libm function, and invoke one of these
493 * macros after, passing the function result(s) (Py_ADJUST_ERANGE2 is useful
494 * for functions returning complex results). This makes two kinds of
495 * adjustments to errno: (A) If it looks like the platform libm set
496 * errno=ERANGE due to underflow, clear errno. (B) If it looks like the
497 * platform libm overflowed but didn't set errno, force errno to ERANGE. In
498 * effect, we're trying to force a useful implementation of C89 errno
501 * This isn't reliable. See Py_OVERFLOWED comments.
502 * X and Y may be evaluated more than once.
504 #define Py_ADJUST_ERANGE1(X) \
507 if ((X) == Py_HUGE_VAL || (X) == -Py_HUGE_VAL) \
510 else if (errno == ERANGE && (X) == 0.0) \
514 #define Py_ADJUST_ERANGE2(X, Y) \
516 if ((X) == Py_HUGE_VAL || (X) == -Py_HUGE_VAL || \
517 (Y) == Py_HUGE_VAL || (Y) == -Py_HUGE_VAL) { \
521 else if (errno == ERANGE) \
525 /* The functions _Py_dg_strtod and _Py_dg_dtoa in Python/dtoa.c (which are
526 * required to support the short float repr introduced in Python 3.1) require
527 * that the floating-point unit that's being used for arithmetic operations
528 * on C doubles is set to use 53-bit precision. It also requires that the
529 * FPU rounding mode is round-half-to-even, but that's less often an issue.
531 * If your FPU isn't already set to 53-bit precision/round-half-to-even, and
532 * you want to make use of _Py_dg_strtod and _Py_dg_dtoa, then you should
534 * #define HAVE_PY_SET_53BIT_PRECISION 1
536 * and also give appropriate definitions for the following three macros:
538 * _PY_SET_53BIT_PRECISION_START : store original FPU settings, and
539 * set FPU to 53-bit precision/round-half-to-even
540 * _PY_SET_53BIT_PRECISION_END : restore original FPU settings
541 * _PY_SET_53BIT_PRECISION_HEADER : any variable declarations needed to
542 * use the two macros above.
544 * The macros are designed to be used within a single C function: see
545 * Python/pystrtod.c for an example of their use.
548 /* get and set x87 control word for gcc/x86 */
549 #ifdef HAVE_GCC_ASM_FOR_X87
550 #define HAVE_PY_SET_53BIT_PRECISION 1
551 /* _Py_get/set_387controlword functions are defined in Python/pymath.c */
552 #define _Py_SET_53BIT_PRECISION_HEADER \
553 unsigned short old_387controlword, new_387controlword
554 #define _Py_SET_53BIT_PRECISION_START \
556 old_387controlword = _Py_get_387controlword(); \
557 new_387controlword = (old_387controlword & ~0x0f00) | 0x0200; \
558 if (new_387controlword != old_387controlword) \
559 _Py_set_387controlword(new_387controlword); \
561 #define _Py_SET_53BIT_PRECISION_END \
562 if (new_387controlword != old_387controlword) \
563 _Py_set_387controlword(old_387controlword)
566 /* default definitions are empty */
567 #ifndef HAVE_PY_SET_53BIT_PRECISION
568 #define _Py_SET_53BIT_PRECISION_HEADER
569 #define _Py_SET_53BIT_PRECISION_START
570 #define _Py_SET_53BIT_PRECISION_END
573 /* If we can't guarantee 53-bit precision, don't use the code
574 in Python/dtoa.c, but fall back to standard code. This
575 means that repr of a float will be long (17 sig digits).
577 Realistically, there are two things that could go wrong:
579 (1) doubles aren't IEEE 754 doubles, or
580 (2) we're on x86 with the rounding precision set to 64-bits
581 (extended precision), and we don't know how to change
582 the rounding precision.
585 #if !defined(DOUBLE_IS_LITTLE_ENDIAN_IEEE754) && \
586 !defined(DOUBLE_IS_BIG_ENDIAN_IEEE754) && \
587 !defined(DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754)
588 #define PY_NO_SHORT_FLOAT_REPR
591 /* double rounding is symptomatic of use of extended precision on x86. If
592 we're seeing double rounding, and we don't have any mechanism available for
593 changing the FPU rounding precision, then don't use Python/dtoa.c. */
594 #if defined(X87_DOUBLE_ROUNDING) && !defined(HAVE_PY_SET_53BIT_PRECISION)
595 #define PY_NO_SHORT_FLOAT_REPR
598 /* Py_DEPRECATED(version)
599 * Declare a variable, type, or function deprecated.
601 * extern int old_var Py_DEPRECATED(2.3);
602 * typedef int T1 Py_DEPRECATED(2.4);
603 * extern int x() Py_DEPRECATED(2.5);
605 #if defined(__GNUC__) && ((__GNUC__ >= 4) || \
606 (__GNUC__ == 3) && (__GNUC_MINOR__ >= 1))
607 #define Py_DEPRECATED(VERSION_UNUSED) __attribute__((__deprecated__))
609 #define Py_DEPRECATED(VERSION_UNUSED)
612 /**************************************************************************
613 Prototypes that are missing from the standard include files on some systems
614 (and possibly only some versions of such systems.)
616 Please be conservative with adding new ones, document them and enclose them
617 in platform-specific #ifdefs.
618 **************************************************************************/
622 extern int gethostname(char *, int);
627 /* It's in the libs, but not the headers... - [cjh] */
628 int shutdown( int, int );
632 #include <sys/types.h> /* we need to import mode_t */
633 extern char * _getpty(int *, int, mode_t
, int);
636 /* On QNX 6, struct termio must be declared by including sys/termio.h
637 if TCGETA, TCSETA, TCSETAW, or TCSETAF are used. sys/termio.h must
638 be included before termios.h or it will generate an error. */
639 #ifdef HAVE_SYS_TERMIO_H
640 #include <sys/termio.h>
643 #if defined(HAVE_OPENPTY) || defined(HAVE_FORKPTY)
644 #if !defined(HAVE_PTY_H) && !defined(HAVE_LIBUTIL_H) && !defined(HAVE_UTIL_H)
645 /* BSDI does not supply a prototype for the 'openpty' and 'forkpty'
646 functions, even though they are included in libutil. */
648 extern int openpty(int *, int *, char *, struct termios
*, struct winsize
*);
649 extern pid_t
forkpty(int *, char *, struct termios
*, struct winsize
*);
650 #endif /* !defined(HAVE_PTY_H) && !defined(HAVE_LIBUTIL_H) */
651 #endif /* defined(HAVE_OPENPTY) || defined(HAVE_FORKPTY) */
654 /* These are pulled from various places. It isn't obvious on what platforms
655 they are necessary, nor what the exact prototype should look like (which
656 is likely to vary between platforms!) If you find you need one of these
657 declarations, please move them to a platform-specific block and include
658 proper prototypes. */
661 /* From Modules/resource.c */
662 extern int getrusage();
663 extern int getpagesize();
665 /* From Python/sysmodule.c and Modules/posixmodule.c */
666 extern int fclose(FILE *);
668 /* From Modules/posixmodule.c */
669 extern int fdatasync(int);
673 /* On 4.4BSD-descendants, ctype functions serves the whole range of
674 * wchar_t character set rather than single byte code points only.
675 * This characteristic can break some operations of string object
676 * including str.upper() and str.split() on UTF-8 locales. This
677 * workaround was provided by Tim Robbins of FreeBSD project.
681 #include <osreldate.h>
682 #if __FreeBSD_version > 500039
683 # define _PY_PORT_CTYPE_UTF8_ISSUE
688 #if defined(__APPLE__)
689 # define _PY_PORT_CTYPE_UTF8_ISSUE
692 #ifdef _PY_PORT_CTYPE_UTF8_ISSUE
696 #define isalnum(c) iswalnum(btowc(c))
698 #define isalpha(c) iswalpha(btowc(c))
700 #define islower(c) iswlower(btowc(c))
702 #define isspace(c) iswspace(btowc(c))
704 #define isupper(c) iswupper(btowc(c))
706 #define tolower(c) towlower(btowc(c))
708 #define toupper(c) towupper(btowc(c))
712 /* Declarations for symbol visibility.
714 PyAPI_FUNC(type): Declares a public Python API function and return type
715 PyAPI_DATA(type): Declares public Python data and its type
716 PyMODINIT_FUNC: A Python module init function. If these functions are
717 inside the Python core, they are private to the core.
718 If in an extension module, it may be declared with
719 external linkage depending on the platform.
721 As a number of platforms support/require "__declspec(dllimport/dllexport)",
722 we support a HAVE_DECLSPEC_DLL macro to save duplication.
726 All windows ports, except cygwin, are handled in PC/pyconfig.h.
728 BeOS and cygwin are the only other autoconf platform requiring special
729 linkage handling and both of these use __declspec().
731 #if defined(__CYGWIN__) || defined(__BEOS__)
732 # define HAVE_DECLSPEC_DLL
735 /* only get special linkage if built as shared or platform is Cygwin */
736 #if defined(Py_ENABLE_SHARED) || defined(__CYGWIN__)
737 # if defined(HAVE_DECLSPEC_DLL)
738 # ifdef Py_BUILD_CORE
739 # define PyAPI_FUNC(RTYPE) __declspec(dllexport) RTYPE
740 # define PyAPI_DATA(RTYPE) extern __declspec(dllexport) RTYPE
741 /* module init functions inside the core need no external linkage */
742 /* except for Cygwin to handle embedding (FIXME: BeOS too?) */
743 # if defined(__CYGWIN__)
744 # define PyMODINIT_FUNC __declspec(dllexport) void
745 # else /* __CYGWIN__ */
746 # define PyMODINIT_FUNC void
747 # endif /* __CYGWIN__ */
748 # else /* Py_BUILD_CORE */
749 /* Building an extension module, or an embedded situation */
750 /* public Python functions and data are imported */
751 /* Under Cygwin, auto-import functions to prevent compilation */
752 /* failures similar to those described at the bottom of 4.1: */
753 /* http://docs.python.org/extending/windows.html#a-cookbook-approach */
754 # if !defined(__CYGWIN__)
755 # define PyAPI_FUNC(RTYPE) __declspec(dllimport) RTYPE
756 # endif /* !__CYGWIN__ */
757 # define PyAPI_DATA(RTYPE) extern __declspec(dllimport) RTYPE
758 /* module init functions outside the core must be exported */
759 # if defined(__cplusplus)
760 # define PyMODINIT_FUNC extern "C" __declspec(dllexport) void
761 # else /* __cplusplus */
762 # define PyMODINIT_FUNC __declspec(dllexport) void
763 # endif /* __cplusplus */
764 # endif /* Py_BUILD_CORE */
765 # endif /* HAVE_DECLSPEC */
766 #endif /* Py_ENABLE_SHARED */
768 /* If no external linkage macros defined by now, create defaults */
770 # define PyAPI_FUNC(RTYPE) RTYPE
773 # define PyAPI_DATA(RTYPE) extern RTYPE
775 #ifndef PyMODINIT_FUNC
776 # if defined(__cplusplus)
777 # define PyMODINIT_FUNC extern "C" void
778 # else /* __cplusplus */
779 # define PyMODINIT_FUNC void
780 # endif /* __cplusplus */
783 /* Deprecated DL_IMPORT and DL_EXPORT macros */
784 #if defined(Py_ENABLE_SHARED) && defined (HAVE_DECLSPEC_DLL)
785 # if defined(Py_BUILD_CORE)
786 # define DL_IMPORT(RTYPE) __declspec(dllexport) RTYPE
787 # define DL_EXPORT(RTYPE) __declspec(dllexport) RTYPE
789 # define DL_IMPORT(RTYPE) __declspec(dllimport) RTYPE
790 # define DL_EXPORT(RTYPE) __declspec(dllexport) RTYPE
794 # define DL_EXPORT(RTYPE) RTYPE
797 # define DL_IMPORT(RTYPE) RTYPE
799 /* End of deprecated DL_* macros */
801 /* If the fd manipulation macros aren't defined,
802 here is a set that should do the job */
804 #if 0 /* disabled and probably obsolete */
807 #define FD_SETSIZE 256
812 typedef long fd_mask
;
814 #define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */
816 #define howmany(x, y) (((x)+((y)-1))/(y))
819 typedef struct fd_set
{
820 fd_mask fds_bits
[howmany(FD_SETSIZE
, NFDBITS
)];
823 #define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS)))
824 #define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS)))
825 #define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS)))
826 #define FD_ZERO(p) memset((char *)(p), '\0', sizeof(*(p)))
830 #endif /* fd manipulation macros */
833 /* limits.h constants that may be missing */
836 #define INT_MAX 2147483647
841 #define LONG_MAX 0X7FFFFFFFL
842 #elif SIZEOF_LONG == 8
843 #define LONG_MAX 0X7FFFFFFFFFFFFFFFL
845 #error "could not set LONG_MAX in pyport.h"
850 #define LONG_MIN (-LONG_MAX-1)
854 #define LONG_BIT (8 * SIZEOF_LONG)
857 #if LONG_BIT != 8 * SIZEOF_LONG
858 /* 04-Oct-2000 LONG_BIT is apparently (mis)defined as 64 on some recent
859 * 32-bit platforms using gcc. We try to catch that here at compile-time
860 * rather than waiting for integer multiplication to trigger bogus
863 #error "LONG_BIT definition appears wrong for platform (bad gcc/glibc config?)."
871 * Hide GCC attributes from compilers that don't support them.
873 #if (!defined(__GNUC__) || __GNUC__ < 2 || \
874 (__GNUC__ == 2 && __GNUC_MINOR__ < 7) ) && \
876 #define Py_GCC_ATTRIBUTE(x)
878 #define Py_GCC_ATTRIBUTE(x) __attribute__(x)
882 * Add PyArg_ParseTuple format where available.
884 #ifdef HAVE_ATTRIBUTE_FORMAT_PARSETUPLE
885 #define Py_FORMAT_PARSETUPLE(func,p1,p2) __attribute__((format(func,p1,p2)))
887 #define Py_FORMAT_PARSETUPLE(func,p1,p2)
891 * Specify alignment on compilers that support it.
893 #if defined(__GNUC__) && __GNUC__ >= 3
894 #define Py_ALIGNED(x) __attribute__((aligned(x)))
896 #define Py_ALIGNED(x)
899 /* Eliminate end-of-loop code not reached warnings from SunPro C
900 * when using do{...}while(0) macros
903 #pragma error_messages (off,E_END_OF_LOOP_CODE_NOT_REACHED)
907 * Older Microsoft compilers don't support the C99 long long literal suffixes,
908 * so these will be defined in PC/pyconfig.h for those compilers.
911 #define Py_LL(x) x##LL
915 #define Py_ULL(x) Py_LL(x##U)
918 #endif /* Py_PYPORT_H */