| #ifndef Py_PYPORT_H |
| #define Py_PYPORT_H |
| |
| #include "pyconfig.h" /* include for defines */ |
| |
| /* Some versions of HP-UX & Solaris need inttypes.h for int32_t, |
| INT32_MAX, etc. */ |
| #ifdef HAVE_INTTYPES_H |
| #include <inttypes.h> |
| #endif |
| |
| #ifdef HAVE_STDINT_H |
| #include <stdint.h> |
| #endif |
| |
| /************************************************************************** |
| Symbols and macros to supply platform-independent interfaces to basic |
| C language & library operations whose spellings vary across platforms. |
| |
| Please try to make documentation here as clear as possible: by definition, |
| the stuff here is trying to illuminate C's darkest corners. |
| |
| Config #defines referenced here: |
| |
| SIGNED_RIGHT_SHIFT_ZERO_FILLS |
| Meaning: To be defined iff i>>j does not extend the sign bit when i is a |
| signed integral type and i < 0. |
| Used in: Py_ARITHMETIC_RIGHT_SHIFT |
| |
| Py_DEBUG |
| Meaning: Extra checks compiled in for debug mode. |
| Used in: Py_SAFE_DOWNCAST |
| |
| HAVE_UINTPTR_T |
| Meaning: The C9X type uintptr_t is supported by the compiler |
| Used in: Py_uintptr_t |
| |
| HAVE_LONG_LONG |
| Meaning: The compiler supports the C type "long long" |
| Used in: PY_LONG_LONG |
| |
| **************************************************************************/ |
| |
| /* typedefs for some C9X-defined synonyms for integral types. |
| * |
| * The names in Python are exactly the same as the C9X names, except with a |
| * Py_ prefix. Until C9X is universally implemented, this is the only way |
| * to ensure that Python gets reliable names that don't conflict with names |
| * in non-Python code that are playing their own tricks to define the C9X |
| * names. |
| * |
| * NOTE: don't go nuts here! Python has no use for *most* of the C9X |
| * integral synonyms. Only define the ones we actually need. |
| */ |
| |
| #ifdef HAVE_LONG_LONG |
| #ifndef PY_LONG_LONG |
| #define PY_LONG_LONG long long |
| #if defined(LLONG_MAX) |
| /* If LLONG_MAX is defined in limits.h, use that. */ |
| #define PY_LLONG_MIN LLONG_MIN |
| #define PY_LLONG_MAX LLONG_MAX |
| #define PY_ULLONG_MAX ULLONG_MAX |
| #elif defined(__LONG_LONG_MAX__) |
| /* Otherwise, if GCC has a builtin define, use that. (Definition of |
| * PY_LLONG_MIN assumes two's complement with no trap representation.) */ |
| #define PY_LLONG_MAX __LONG_LONG_MAX__ |
| #define PY_LLONG_MIN (-PY_LLONG_MAX - 1) |
| #define PY_ULLONG_MAX (PY_LLONG_MAX * Py_ULL(2) + 1) |
| #elif defined(SIZEOF_LONG_LONG) |
| /* Otherwise compute from SIZEOF_LONG_LONG, assuming two's complement, no |
| padding bits, and no trap representation. Note: PY_ULLONG_MAX was |
| previously #defined as (~0ULL) here; but that'll give the wrong value in a |
| preprocessor expression on systems where long long != intmax_t. */ |
| #define PY_LLONG_MAX \ |
| (1 + 2 * ((Py_LL(1) << (CHAR_BIT * SIZEOF_LONG_LONG - 2)) - 1)) |
| #define PY_LLONG_MIN (-PY_LLONG_MAX - 1) |
| #define PY_ULLONG_MAX (PY_LLONG_MAX * Py_ULL(2) + 1) |
| #endif /* LLONG_MAX */ |
| #endif |
| #endif /* HAVE_LONG_LONG */ |
| |
| /* a build with 30-bit digits for Python long integers needs an exact-width |
| * 32-bit unsigned integer type to store those digits. (We could just use |
| * type 'unsigned long', but that would be wasteful on a system where longs |
| * are 64-bits.) On Unix systems, the autoconf macro AC_TYPE_UINT32_T defines |
| * uint32_t to be such a type unless stdint.h or inttypes.h defines uint32_t. |
| * However, it doesn't set HAVE_UINT32_T, so we do that here. |
| */ |
| #ifdef uint32_t |
| #define HAVE_UINT32_T 1 |
| #endif |
| |
| #ifdef HAVE_UINT32_T |
| #ifndef PY_UINT32_T |
| #define PY_UINT32_T uint32_t |
| #endif |
| #endif |
| |
| /* Macros for a 64-bit unsigned integer type; used for type 'twodigits' in the |
| * long integer implementation, when 30-bit digits are enabled. |
| */ |
| #ifdef uint64_t |
| #define HAVE_UINT64_T 1 |
| #endif |
| |
| #ifdef HAVE_UINT64_T |
| #ifndef PY_UINT64_T |
| #define PY_UINT64_T uint64_t |
| #endif |
| #endif |
| |
| /* Signed variants of the above */ |
| #ifdef int32_t |
| #define HAVE_INT32_T 1 |
| #endif |
| |
| #ifdef HAVE_INT32_T |
| #ifndef PY_INT32_T |
| #define PY_INT32_T int32_t |
| #endif |
| #endif |
| |
| #ifdef int64_t |
| #define HAVE_INT64_T 1 |
| #endif |
| |
| #ifdef HAVE_INT64_T |
| #ifndef PY_INT64_T |
| #define PY_INT64_T int64_t |
| #endif |
| #endif |
| |
| /* If PYLONG_BITS_IN_DIGIT is not defined then we'll use 30-bit digits if all |
| the necessary integer types are available, and we're on a 64-bit platform |
| (as determined by SIZEOF_VOID_P); otherwise we use 15-bit digits. */ |
| |
| #ifndef PYLONG_BITS_IN_DIGIT |
| #if (defined HAVE_UINT64_T && defined HAVE_INT64_T && \ |
| defined HAVE_UINT32_T && defined HAVE_INT32_T && SIZEOF_VOID_P >= 8) |
| #define PYLONG_BITS_IN_DIGIT 30 |
| #else |
| #define PYLONG_BITS_IN_DIGIT 15 |
| #endif |
| #endif |
| |
| /* Prime multiplier used in string and various other hashes. */ |
| #define _PyHASH_MULTIPLIER 1000003UL /* 0xf4243 */ |
| |
| /* Parameters used for the numeric hash implementation. See notes for |
| _Py_HashDouble in Objects/object.c. Numeric hashes are based on |
| reduction modulo the prime 2**_PyHASH_BITS - 1. */ |
| |
| #if SIZEOF_VOID_P >= 8 |
| #define _PyHASH_BITS 61 |
| #else |
| #define _PyHASH_BITS 31 |
| #endif |
| #define _PyHASH_MODULUS (((size_t)1 << _PyHASH_BITS) - 1) |
| #define _PyHASH_INF 314159 |
| #define _PyHASH_NAN 0 |
| #define _PyHASH_IMAG _PyHASH_MULTIPLIER |
| |
| /* uintptr_t is the C9X name for an unsigned integral type such that a |
| * legitimate void* can be cast to uintptr_t and then back to void* again |
| * without loss of information. Similarly for intptr_t, wrt a signed |
| * integral type. |
| */ |
| #ifdef HAVE_UINTPTR_T |
| typedef uintptr_t Py_uintptr_t; |
| typedef intptr_t Py_intptr_t; |
| |
| #elif SIZEOF_VOID_P <= SIZEOF_INT |
| typedef unsigned int Py_uintptr_t; |
| typedef int Py_intptr_t; |
| |
| #elif SIZEOF_VOID_P <= SIZEOF_LONG |
| typedef unsigned long Py_uintptr_t; |
| typedef long Py_intptr_t; |
| |
| #elif defined(HAVE_LONG_LONG) && (SIZEOF_VOID_P <= SIZEOF_LONG_LONG) |
| typedef unsigned PY_LONG_LONG Py_uintptr_t; |
| typedef PY_LONG_LONG Py_intptr_t; |
| |
| #else |
| # error "Python needs a typedef for Py_uintptr_t in pyport.h." |
| #endif /* HAVE_UINTPTR_T */ |
| |
| /* Py_ssize_t is a signed integral type such that sizeof(Py_ssize_t) == |
| * sizeof(size_t). C99 doesn't define such a thing directly (size_t is an |
| * unsigned integral type). See PEP 353 for details. |
| */ |
| #ifdef HAVE_SSIZE_T |
| typedef ssize_t Py_ssize_t; |
| #elif SIZEOF_VOID_P == SIZEOF_SIZE_T |
| typedef Py_intptr_t Py_ssize_t; |
| #else |
| # error "Python needs a typedef for Py_ssize_t in pyport.h." |
| #endif |
| |
| /* Py_hash_t is the same size as a pointer. */ |
| typedef Py_ssize_t Py_hash_t; |
| /* Py_uhash_t is the unsigned equivalent needed to calculate numeric hash. */ |
| typedef size_t Py_uhash_t; |
| |
| /* Largest possible value of size_t. |
| SIZE_MAX is part of C99, so it might be defined on some |
| platforms. If it is not defined, (size_t)-1 is a portable |
| definition for C89, due to the way signed->unsigned |
| conversion is defined. */ |
| #ifdef SIZE_MAX |
| #define PY_SIZE_MAX SIZE_MAX |
| #else |
| #define PY_SIZE_MAX ((size_t)-1) |
| #endif |
| |
| /* Largest positive value of type Py_ssize_t. */ |
| #define PY_SSIZE_T_MAX ((Py_ssize_t)(((size_t)-1)>>1)) |
| /* Smallest negative value of type Py_ssize_t. */ |
| #define PY_SSIZE_T_MIN (-PY_SSIZE_T_MAX-1) |
| |
| #if SIZEOF_PID_T > SIZEOF_LONG |
| # error "Python doesn't support sizeof(pid_t) > sizeof(long)" |
| #endif |
| |
| /* PY_FORMAT_SIZE_T is a platform-specific modifier for use in a printf |
| * format to convert an argument with the width of a size_t or Py_ssize_t. |
| * C99 introduced "z" for this purpose, but not all platforms support that; |
| * e.g., MS compilers use "I" instead. |
| * |
| * These "high level" Python format functions interpret "z" correctly on |
| * all platforms (Python interprets the format string itself, and does whatever |
| * the platform C requires to convert a size_t/Py_ssize_t argument): |
| * |
| * PyBytes_FromFormat |
| * PyErr_Format |
| * PyBytes_FromFormatV |
| * PyUnicode_FromFormatV |
| * |
| * Lower-level uses require that you interpolate the correct format modifier |
| * yourself (e.g., calling printf, fprintf, sprintf, PyOS_snprintf); for |
| * example, |
| * |
| * Py_ssize_t index; |
| * fprintf(stderr, "index %" PY_FORMAT_SIZE_T "d sucks\n", index); |
| * |
| * That will expand to %ld, or %Id, or to something else correct for a |
| * Py_ssize_t on the platform. |
| */ |
| #ifndef PY_FORMAT_SIZE_T |
| # if SIZEOF_SIZE_T == SIZEOF_INT && !defined(__APPLE__) |
| # define PY_FORMAT_SIZE_T "" |
| # elif SIZEOF_SIZE_T == SIZEOF_LONG |
| # define PY_FORMAT_SIZE_T "l" |
| # elif defined(MS_WINDOWS) |
| # define PY_FORMAT_SIZE_T "I" |
| # else |
| # error "This platform's pyconfig.h needs to define PY_FORMAT_SIZE_T" |
| # endif |
| #endif |
| |
| /* PY_FORMAT_LONG_LONG is analogous to PY_FORMAT_SIZE_T above, but for |
| * the long long type instead of the size_t type. It's only available |
| * when HAVE_LONG_LONG is defined. The "high level" Python format |
| * functions listed above will interpret "lld" or "llu" correctly on |
| * all platforms. |
| */ |
| #ifdef HAVE_LONG_LONG |
| # ifndef PY_FORMAT_LONG_LONG |
| # if defined(MS_WIN64) || defined(MS_WINDOWS) |
| # define PY_FORMAT_LONG_LONG "I64" |
| # else |
| # error "This platform's pyconfig.h needs to define PY_FORMAT_LONG_LONG" |
| # endif |
| # endif |
| #endif |
| |
| /* Py_LOCAL can be used instead of static to get the fastest possible calling |
| * convention for functions that are local to a given module. |
| * |
| * Py_LOCAL_INLINE does the same thing, and also explicitly requests inlining, |
| * for platforms that support that. |
| * |
| * If PY_LOCAL_AGGRESSIVE is defined before python.h is included, more |
| * "aggressive" inlining/optimizaion is enabled for the entire module. This |
| * may lead to code bloat, and may slow things down for those reasons. It may |
| * also lead to errors, if the code relies on pointer aliasing. Use with |
| * care. |
| * |
| * NOTE: You can only use this for functions that are entirely local to a |
| * module; functions that are exported via method tables, callbacks, etc, |
| * should keep using static. |
| */ |
| |
| #if defined(_MSC_VER) |
| #if defined(PY_LOCAL_AGGRESSIVE) |
| /* enable more aggressive optimization for visual studio */ |
| #pragma optimize("agtw", on) |
| #endif |
| /* ignore warnings if the compiler decides not to inline a function */ |
| #pragma warning(disable: 4710) |
| /* fastest possible local call under MSVC */ |
| #define Py_LOCAL(type) static type __fastcall |
| #define Py_LOCAL_INLINE(type) static __inline type __fastcall |
| #elif defined(USE_INLINE) |
| #define Py_LOCAL(type) static type |
| #define Py_LOCAL_INLINE(type) static inline type |
| #else |
| #define Py_LOCAL(type) static type |
| #define Py_LOCAL_INLINE(type) static type |
| #endif |
| |
| /* Py_MEMCPY can be used instead of memcpy in cases where the copied blocks |
| * are often very short. While most platforms have highly optimized code for |
| * large transfers, the setup costs for memcpy are often quite high. MEMCPY |
| * solves this by doing short copies "in line". |
| */ |
| |
| #if defined(_MSC_VER) |
| #define Py_MEMCPY(target, source, length) do { \ |
| size_t i_, n_ = (length); \ |
| char *t_ = (void*) (target); \ |
| const char *s_ = (void*) (source); \ |
| if (n_ >= 16) \ |
| memcpy(t_, s_, n_); \ |
| else \ |
| for (i_ = 0; i_ < n_; i_++) \ |
| t_[i_] = s_[i_]; \ |
| } while (0) |
| #else |
| #define Py_MEMCPY memcpy |
| #endif |
| |
| #include <stdlib.h> |
| |
| #ifdef HAVE_IEEEFP_H |
| #include <ieeefp.h> /* needed for 'finite' declaration on some platforms */ |
| #endif |
| |
| #include <math.h> /* Moved here from the math section, before extern "C" */ |
| |
| /******************************************** |
| * WRAPPER FOR <time.h> and/or <sys/time.h> * |
| ********************************************/ |
| |
| #ifdef TIME_WITH_SYS_TIME |
| #include <sys/time.h> |
| #include <time.h> |
| #else /* !TIME_WITH_SYS_TIME */ |
| #ifdef HAVE_SYS_TIME_H |
| #include <sys/time.h> |
| #else /* !HAVE_SYS_TIME_H */ |
| #include <time.h> |
| #endif /* !HAVE_SYS_TIME_H */ |
| #endif /* !TIME_WITH_SYS_TIME */ |
| |
| |
| /****************************** |
| * WRAPPER FOR <sys/select.h> * |
| ******************************/ |
| |
| /* NB caller must include <sys/types.h> */ |
| |
| #ifdef HAVE_SYS_SELECT_H |
| #include <sys/select.h> |
| #endif /* !HAVE_SYS_SELECT_H */ |
| |
| /******************************* |
| * stat() and fstat() fiddling * |
| *******************************/ |
| |
| /* We expect that stat and fstat exist on most systems. |
| * It's confirmed on Unix, Mac and Windows. |
| * If you don't have them, add |
| * #define DONT_HAVE_STAT |
| * and/or |
| * #define DONT_HAVE_FSTAT |
| * to your pyconfig.h. Python code beyond this should check HAVE_STAT and |
| * HAVE_FSTAT instead. |
| * Also |
| * #define HAVE_SYS_STAT_H |
| * if <sys/stat.h> exists on your platform, and |
| * #define HAVE_STAT_H |
| * if <stat.h> does. |
| */ |
| #ifndef DONT_HAVE_STAT |
| #define HAVE_STAT |
| #endif |
| |
| #ifndef DONT_HAVE_FSTAT |
| #define HAVE_FSTAT |
| #endif |
| |
| #ifdef HAVE_SYS_STAT_H |
| #if defined(PYOS_OS2) && defined(PYCC_GCC) |
| #include <sys/types.h> |
| #endif |
| #include <sys/stat.h> |
| #elif defined(HAVE_STAT_H) |
| #include <stat.h> |
| #endif |
| |
| #if defined(PYCC_VACPP) |
| /* VisualAge C/C++ Failed to Define MountType Field in sys/stat.h */ |
| #define S_IFMT (S_IFDIR|S_IFCHR|S_IFREG) |
| #endif |
| |
| #ifndef S_ISREG |
| #define S_ISREG(x) (((x) & S_IFMT) == S_IFREG) |
| #endif |
| |
| #ifndef S_ISDIR |
| #define S_ISDIR(x) (((x) & S_IFMT) == S_IFDIR) |
| #endif |
| |
| |
| #ifdef __cplusplus |
| /* Move this down here since some C++ #include's don't like to be included |
| inside an extern "C" */ |
| extern "C" { |
| #endif |
| |
| |
| /* Py_ARITHMETIC_RIGHT_SHIFT |
| * C doesn't define whether a right-shift of a signed integer sign-extends |
| * or zero-fills. Here a macro to force sign extension: |
| * Py_ARITHMETIC_RIGHT_SHIFT(TYPE, I, J) |
| * Return I >> J, forcing sign extension. Arithmetically, return the |
| * floor of I/2**J. |
| * Requirements: |
| * I should have signed integer type. In the terminology of C99, this can |
| * be either one of the five standard signed integer types (signed char, |
| * short, int, long, long long) or an extended signed integer type. |
| * J is an integer >= 0 and strictly less than the number of bits in the |
| * type of I (because C doesn't define what happens for J outside that |
| * range either). |
| * TYPE used to specify the type of I, but is now ignored. It's been left |
| * in for backwards compatibility with versions <= 2.6 or 3.0. |
| * Caution: |
| * I may be evaluated more than once. |
| */ |
| #ifdef SIGNED_RIGHT_SHIFT_ZERO_FILLS |
| #define Py_ARITHMETIC_RIGHT_SHIFT(TYPE, I, J) \ |
| ((I) < 0 ? -1-((-1-(I)) >> (J)) : (I) >> (J)) |
| #else |
| #define Py_ARITHMETIC_RIGHT_SHIFT(TYPE, I, J) ((I) >> (J)) |
| #endif |
| |
| /* Py_FORCE_EXPANSION(X) |
| * "Simply" returns its argument. However, macro expansions within the |
| * argument are evaluated. This unfortunate trickery is needed to get |
| * token-pasting to work as desired in some cases. |
| */ |
| #define Py_FORCE_EXPANSION(X) X |
| |
| /* Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW) |
| * Cast VALUE to type NARROW from type WIDE. In Py_DEBUG mode, this |
| * assert-fails if any information is lost. |
| * Caution: |
| * VALUE may be evaluated more than once. |
| */ |
| #ifdef Py_DEBUG |
| #define Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW) \ |
| (assert((WIDE)(NARROW)(VALUE) == (VALUE)), (NARROW)(VALUE)) |
| #else |
| #define Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW) (NARROW)(VALUE) |
| #endif |
| |
| /* Py_SET_ERRNO_ON_MATH_ERROR(x) |
| * If a libm function did not set errno, but it looks like the result |
| * overflowed or not-a-number, set errno to ERANGE or EDOM. Set errno |
| * to 0 before calling a libm function, and invoke this macro after, |
| * passing the function result. |
| * Caution: |
| * This isn't reliable. See Py_OVERFLOWED comments. |
| * X is evaluated more than once. |
| */ |
| #if defined(__FreeBSD__) || defined(__OpenBSD__) || (defined(__hpux) && defined(__ia64)) |
| #define _Py_SET_EDOM_FOR_NAN(X) if (isnan(X)) errno = EDOM; |
| #else |
| #define _Py_SET_EDOM_FOR_NAN(X) ; |
| #endif |
| #define Py_SET_ERRNO_ON_MATH_ERROR(X) \ |
| do { \ |
| if (errno == 0) { \ |
| if ((X) == Py_HUGE_VAL || (X) == -Py_HUGE_VAL) \ |
| errno = ERANGE; \ |
| else _Py_SET_EDOM_FOR_NAN(X) \ |
| } \ |
| } while(0) |
| |
| /* Py_SET_ERANGE_ON_OVERFLOW(x) |
| * An alias of Py_SET_ERRNO_ON_MATH_ERROR for backward-compatibility. |
| */ |
| #define Py_SET_ERANGE_IF_OVERFLOW(X) Py_SET_ERRNO_ON_MATH_ERROR(X) |
| |
| /* Py_ADJUST_ERANGE1(x) |
| * Py_ADJUST_ERANGE2(x, y) |
| * Set errno to 0 before calling a libm function, and invoke one of these |
| * macros after, passing the function result(s) (Py_ADJUST_ERANGE2 is useful |
| * for functions returning complex results). This makes two kinds of |
| * adjustments to errno: (A) If it looks like the platform libm set |
| * errno=ERANGE due to underflow, clear errno. (B) If it looks like the |
| * platform libm overflowed but didn't set errno, force errno to ERANGE. In |
| * effect, we're trying to force a useful implementation of C89 errno |
| * behavior. |
| * Caution: |
| * This isn't reliable. See Py_OVERFLOWED comments. |
| * X and Y may be evaluated more than once. |
| */ |
| #define Py_ADJUST_ERANGE1(X) \ |
| do { \ |
| if (errno == 0) { \ |
| if ((X) == Py_HUGE_VAL || (X) == -Py_HUGE_VAL) \ |
| errno = ERANGE; \ |
| } \ |
| else if (errno == ERANGE && (X) == 0.0) \ |
| errno = 0; \ |
| } while(0) |
| |
| #define Py_ADJUST_ERANGE2(X, Y) \ |
| do { \ |
| if ((X) == Py_HUGE_VAL || (X) == -Py_HUGE_VAL || \ |
| (Y) == Py_HUGE_VAL || (Y) == -Py_HUGE_VAL) { \ |
| if (errno == 0) \ |
| errno = ERANGE; \ |
| } \ |
| else if (errno == ERANGE) \ |
| errno = 0; \ |
| } while(0) |
| |
| /* The functions _Py_dg_strtod and _Py_dg_dtoa in Python/dtoa.c (which are |
| * required to support the short float repr introduced in Python 3.1) require |
| * that the floating-point unit that's being used for arithmetic operations |
| * on C doubles is set to use 53-bit precision. It also requires that the |
| * FPU rounding mode is round-half-to-even, but that's less often an issue. |
| * |
| * If your FPU isn't already set to 53-bit precision/round-half-to-even, and |
| * you want to make use of _Py_dg_strtod and _Py_dg_dtoa, then you should |
| * |
| * #define HAVE_PY_SET_53BIT_PRECISION 1 |
| * |
| * and also give appropriate definitions for the following three macros: |
| * |
| * _PY_SET_53BIT_PRECISION_START : store original FPU settings, and |
| * set FPU to 53-bit precision/round-half-to-even |
| * _PY_SET_53BIT_PRECISION_END : restore original FPU settings |
| * _PY_SET_53BIT_PRECISION_HEADER : any variable declarations needed to |
| * use the two macros above. |
| * |
| * The macros are designed to be used within a single C function: see |
| * Python/pystrtod.c for an example of their use. |
| */ |
| |
| /* get and set x87 control word for gcc/x86 */ |
| #ifdef HAVE_GCC_ASM_FOR_X87 |
| #define HAVE_PY_SET_53BIT_PRECISION 1 |
| /* _Py_get/set_387controlword functions are defined in Python/pymath.c */ |
| #define _Py_SET_53BIT_PRECISION_HEADER \ |
| unsigned short old_387controlword, new_387controlword |
| #define _Py_SET_53BIT_PRECISION_START \ |
| do { \ |
| old_387controlword = _Py_get_387controlword(); \ |
| new_387controlword = (old_387controlword & ~0x0f00) | 0x0200; \ |
| if (new_387controlword != old_387controlword) \ |
| _Py_set_387controlword(new_387controlword); \ |
| } while (0) |
| #define _Py_SET_53BIT_PRECISION_END \ |
| if (new_387controlword != old_387controlword) \ |
| _Py_set_387controlword(old_387controlword) |
| #endif |
| |
| /* get and set x87 control word for VisualStudio/x86 */ |
| #if defined(_MSC_VER) && !defined(_WIN64) /* x87 not supported in 64-bit */ |
| #define HAVE_PY_SET_53BIT_PRECISION 1 |
| #define _Py_SET_53BIT_PRECISION_HEADER \ |
| unsigned int old_387controlword, new_387controlword, out_387controlword |
| /* We use the __control87_2 function to set only the x87 control word. |
| The SSE control word is unaffected. */ |
| #define _Py_SET_53BIT_PRECISION_START \ |
| do { \ |
| __control87_2(0, 0, &old_387controlword, NULL); \ |
| new_387controlword = \ |
| (old_387controlword & ~(_MCW_PC | _MCW_RC)) | (_PC_53 | _RC_NEAR); \ |
| if (new_387controlword != old_387controlword) \ |
| __control87_2(new_387controlword, _MCW_PC | _MCW_RC, \ |
| &out_387controlword, NULL); \ |
| } while (0) |
| #define _Py_SET_53BIT_PRECISION_END \ |
| do { \ |
| if (new_387controlword != old_387controlword) \ |
| __control87_2(old_387controlword, _MCW_PC | _MCW_RC, \ |
| &out_387controlword, NULL); \ |
| } while (0) |
| #endif |
| |
| /* default definitions are empty */ |
| #ifndef HAVE_PY_SET_53BIT_PRECISION |
| #define _Py_SET_53BIT_PRECISION_HEADER |
| #define _Py_SET_53BIT_PRECISION_START |
| #define _Py_SET_53BIT_PRECISION_END |
| #endif |
| |
| /* If we can't guarantee 53-bit precision, don't use the code |
| in Python/dtoa.c, but fall back to standard code. This |
| means that repr of a float will be long (17 sig digits). |
| |
| Realistically, there are two things that could go wrong: |
| |
| (1) doubles aren't IEEE 754 doubles, or |
| (2) we're on x86 with the rounding precision set to 64-bits |
| (extended precision), and we don't know how to change |
| the rounding precision. |
| */ |
| |
| #if !defined(DOUBLE_IS_LITTLE_ENDIAN_IEEE754) && \ |
| !defined(DOUBLE_IS_BIG_ENDIAN_IEEE754) && \ |
| !defined(DOUBLE_IS_ARM_MIXED_ENDIAN_IEEE754) |
| #define PY_NO_SHORT_FLOAT_REPR |
| #endif |
| |
| /* double rounding is symptomatic of use of extended precision on x86. If |
| we're seeing double rounding, and we don't have any mechanism available for |
| changing the FPU rounding precision, then don't use Python/dtoa.c. */ |
| #if defined(X87_DOUBLE_ROUNDING) && !defined(HAVE_PY_SET_53BIT_PRECISION) |
| #define PY_NO_SHORT_FLOAT_REPR |
| #endif |
| |
| |
| /* Py_DEPRECATED(version) |
| * Declare a variable, type, or function deprecated. |
| * Usage: |
| * extern int old_var Py_DEPRECATED(2.3); |
| * typedef int T1 Py_DEPRECATED(2.4); |
| * extern int x() Py_DEPRECATED(2.5); |
| */ |
| #if defined(__GNUC__) && ((__GNUC__ >= 4) || \ |
| (__GNUC__ == 3) && (__GNUC_MINOR__ >= 1)) |
| #define Py_DEPRECATED(VERSION_UNUSED) __attribute__((__deprecated__)) |
| #else |
| #define Py_DEPRECATED(VERSION_UNUSED) |
| #endif |
| |
| /************************************************************************** |
| Prototypes that are missing from the standard include files on some systems |
| (and possibly only some versions of such systems.) |
| |
| Please be conservative with adding new ones, document them and enclose them |
| in platform-specific #ifdefs. |
| **************************************************************************/ |
| |
| #ifdef SOLARIS |
| /* Unchecked */ |
| extern int gethostname(char *, int); |
| #endif |
| |
| #ifdef HAVE__GETPTY |
| #include <sys/types.h> /* we need to import mode_t */ |
| extern char * _getpty(int *, int, mode_t, int); |
| #endif |
| |
| /* On QNX 6, struct termio must be declared by including sys/termio.h |
| if TCGETA, TCSETA, TCSETAW, or TCSETAF are used. sys/termio.h must |
| be included before termios.h or it will generate an error. */ |
| #if defined(HAVE_SYS_TERMIO_H) && !defined(__hpux) |
| #include <sys/termio.h> |
| #endif |
| |
| #if defined(HAVE_OPENPTY) || defined(HAVE_FORKPTY) |
| #if !defined(HAVE_PTY_H) && !defined(HAVE_LIBUTIL_H) |
| /* BSDI does not supply a prototype for the 'openpty' and 'forkpty' |
| functions, even though they are included in libutil. */ |
| #include <termios.h> |
| extern int openpty(int *, int *, char *, struct termios *, struct winsize *); |
| extern pid_t forkpty(int *, char *, struct termios *, struct winsize *); |
| #endif /* !defined(HAVE_PTY_H) && !defined(HAVE_LIBUTIL_H) */ |
| #endif /* defined(HAVE_OPENPTY) || defined(HAVE_FORKPTY) */ |
| |
| |
| /* On 4.4BSD-descendants, ctype functions serves the whole range of |
| * wchar_t character set rather than single byte code points only. |
| * This characteristic can break some operations of string object |
| * including str.upper() and str.split() on UTF-8 locales. This |
| * workaround was provided by Tim Robbins of FreeBSD project. |
| */ |
| |
| #ifdef __FreeBSD__ |
| #include <osreldate.h> |
| #if __FreeBSD_version > 500039 |
| # define _PY_PORT_CTYPE_UTF8_ISSUE |
| #endif |
| #endif |
| |
| |
| #if defined(__APPLE__) |
| # define _PY_PORT_CTYPE_UTF8_ISSUE |
| #endif |
| |
| #ifdef _PY_PORT_CTYPE_UTF8_ISSUE |
| #include <ctype.h> |
| #include <wctype.h> |
| #undef isalnum |
| #define isalnum(c) iswalnum(btowc(c)) |
| #undef isalpha |
| #define isalpha(c) iswalpha(btowc(c)) |
| #undef islower |
| #define islower(c) iswlower(btowc(c)) |
| #undef isspace |
| #define isspace(c) iswspace(btowc(c)) |
| #undef isupper |
| #define isupper(c) iswupper(btowc(c)) |
| #undef tolower |
| #define tolower(c) towlower(btowc(c)) |
| #undef toupper |
| #define toupper(c) towupper(btowc(c)) |
| #endif |
| |
| |
| /* Declarations for symbol visibility. |
| |
| PyAPI_FUNC(type): Declares a public Python API function and return type |
| PyAPI_DATA(type): Declares public Python data and its type |
| PyMODINIT_FUNC: A Python module init function. If these functions are |
| inside the Python core, they are private to the core. |
| If in an extension module, it may be declared with |
| external linkage depending on the platform. |
| |
| As a number of platforms support/require "__declspec(dllimport/dllexport)", |
| we support a HAVE_DECLSPEC_DLL macro to save duplication. |
| */ |
| |
| /* |
| All windows ports, except cygwin, are handled in PC/pyconfig.h. |
| |
| Cygwin is the only other autoconf platform requiring special |
| linkage handling and it uses __declspec(). |
| */ |
| #if defined(__CYGWIN__) |
| # define HAVE_DECLSPEC_DLL |
| #endif |
| |
| /* only get special linkage if built as shared or platform is Cygwin */ |
| #if defined(Py_ENABLE_SHARED) || defined(__CYGWIN__) |
| # if defined(HAVE_DECLSPEC_DLL) |
| # ifdef Py_BUILD_CORE |
| # define PyAPI_FUNC(RTYPE) __declspec(dllexport) RTYPE |
| # define PyAPI_DATA(RTYPE) extern __declspec(dllexport) RTYPE |
| /* module init functions inside the core need no external linkage */ |
| /* except for Cygwin to handle embedding */ |
| # if defined(__CYGWIN__) |
| # define PyMODINIT_FUNC __declspec(dllexport) PyObject* |
| # else /* __CYGWIN__ */ |
| # define PyMODINIT_FUNC PyObject* |
| # endif /* __CYGWIN__ */ |
| # else /* Py_BUILD_CORE */ |
| /* Building an extension module, or an embedded situation */ |
| /* public Python functions and data are imported */ |
| /* Under Cygwin, auto-import functions to prevent compilation */ |
| /* failures similar to those described at the bottom of 4.1: */ |
| /* http://docs.python.org/extending/windows.html#a-cookbook-approach */ |
| # if !defined(__CYGWIN__) |
| # define PyAPI_FUNC(RTYPE) __declspec(dllimport) RTYPE |
| # endif /* !__CYGWIN__ */ |
| # define PyAPI_DATA(RTYPE) extern __declspec(dllimport) RTYPE |
| /* module init functions outside the core must be exported */ |
| # if defined(__cplusplus) |
| # define PyMODINIT_FUNC extern "C" __declspec(dllexport) PyObject* |
| # else /* __cplusplus */ |
| # define PyMODINIT_FUNC __declspec(dllexport) PyObject* |
| # endif /* __cplusplus */ |
| # endif /* Py_BUILD_CORE */ |
| # endif /* HAVE_DECLSPEC */ |
| #endif /* Py_ENABLE_SHARED */ |
| |
| /* If no external linkage macros defined by now, create defaults */ |
| #ifndef PyAPI_FUNC |
| # define PyAPI_FUNC(RTYPE) RTYPE |
| #endif |
| #ifndef PyAPI_DATA |
| # define PyAPI_DATA(RTYPE) extern RTYPE |
| #endif |
| #ifndef PyMODINIT_FUNC |
| # if defined(__cplusplus) |
| # define PyMODINIT_FUNC extern "C" PyObject* |
| # else /* __cplusplus */ |
| # define PyMODINIT_FUNC PyObject* |
| # endif /* __cplusplus */ |
| #endif |
| |
| /* limits.h constants that may be missing */ |
| |
| #ifndef INT_MAX |
| #define INT_MAX 2147483647 |
| #endif |
| |
| #ifndef LONG_MAX |
| #if SIZEOF_LONG == 4 |
| #define LONG_MAX 0X7FFFFFFFL |
| #elif SIZEOF_LONG == 8 |
| #define LONG_MAX 0X7FFFFFFFFFFFFFFFL |
| #else |
| #error "could not set LONG_MAX in pyport.h" |
| #endif |
| #endif |
| |
| #ifndef LONG_MIN |
| #define LONG_MIN (-LONG_MAX-1) |
| #endif |
| |
| #ifndef LONG_BIT |
| #define LONG_BIT (8 * SIZEOF_LONG) |
| #endif |
| |
| #if LONG_BIT != 8 * SIZEOF_LONG |
| /* 04-Oct-2000 LONG_BIT is apparently (mis)defined as 64 on some recent |
| * 32-bit platforms using gcc. We try to catch that here at compile-time |
| * rather than waiting for integer multiplication to trigger bogus |
| * overflows. |
| */ |
| #error "LONG_BIT definition appears wrong for platform (bad gcc/glibc config?)." |
| #endif |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| /* |
| * Hide GCC attributes from compilers that don't support them. |
| */ |
| #if (!defined(__GNUC__) || __GNUC__ < 2 || \ |
| (__GNUC__ == 2 && __GNUC_MINOR__ < 7) ) |
| #define Py_GCC_ATTRIBUTE(x) |
| #else |
| #define Py_GCC_ATTRIBUTE(x) __attribute__(x) |
| #endif |
| |
| /* |
| * Add PyArg_ParseTuple format where available. |
| */ |
| #ifdef HAVE_ATTRIBUTE_FORMAT_PARSETUPLE |
| #define Py_FORMAT_PARSETUPLE(func,p1,p2) __attribute__((format(func,p1,p2))) |
| #else |
| #define Py_FORMAT_PARSETUPLE(func,p1,p2) |
| #endif |
| |
| /* |
| * Specify alignment on compilers that support it. |
| */ |
| #if defined(__GNUC__) && __GNUC__ >= 3 |
| #define Py_ALIGNED(x) __attribute__((aligned(x))) |
| #else |
| #define Py_ALIGNED(x) |
| #endif |
| |
| /* Eliminate end-of-loop code not reached warnings from SunPro C |
| * when using do{...}while(0) macros |
| */ |
| #ifdef __SUNPRO_C |
| #pragma error_messages (off,E_END_OF_LOOP_CODE_NOT_REACHED) |
| #endif |
| |
| /* |
| * Older Microsoft compilers don't support the C99 long long literal suffixes, |
| * so these will be defined in PC/pyconfig.h for those compilers. |
| */ |
| #ifndef Py_LL |
| #define Py_LL(x) x##LL |
| #endif |
| |
| #ifndef Py_ULL |
| #define Py_ULL(x) Py_LL(x##U) |
| #endif |
| |
| #ifdef VA_LIST_IS_ARRAY |
| #define Py_VA_COPY(x, y) Py_MEMCPY((x), (y), sizeof(va_list)) |
| #else |
| #ifdef __va_copy |
| #define Py_VA_COPY __va_copy |
| #else |
| #define Py_VA_COPY(x, y) (x) = (y) |
| #endif |
| #endif |
| |
| #endif /* Py_PYPORT_H */ |