mirror of https://github.com/python/cpython
836 lines
25 KiB
C
836 lines
25 KiB
C
#ifndef Py_PYPORT_H
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#define Py_PYPORT_H
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#include "pyconfig.h" /* include for defines */
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#ifdef HAVE_STDINT_H
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#include <stdint.h>
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#endif
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/**************************************************************************
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Symbols and macros to supply platform-independent interfaces to basic
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C language & library operations whose spellings vary across platforms.
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Please try to make documentation here as clear as possible: by definition,
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the stuff here is trying to illuminate C's darkest corners.
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Config #defines referenced here:
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SIGNED_RIGHT_SHIFT_ZERO_FILLS
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Meaning: To be defined iff i>>j does not extend the sign bit when i is a
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signed integral type and i < 0.
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Used in: Py_ARITHMETIC_RIGHT_SHIFT
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Py_DEBUG
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Meaning: Extra checks compiled in for debug mode.
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Used in: Py_SAFE_DOWNCAST
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HAVE_UINTPTR_T
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Meaning: The C9X type uintptr_t is supported by the compiler
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Used in: Py_uintptr_t
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HAVE_LONG_LONG
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Meaning: The compiler supports the C type "long long"
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Used in: PY_LONG_LONG
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**************************************************************************/
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/* For backward compatibility only. Obsolete, do not use. */
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#ifdef HAVE_PROTOTYPES
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#define Py_PROTO(x) x
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#else
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#define Py_PROTO(x) ()
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#endif
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#ifndef Py_FPROTO
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#define Py_FPROTO(x) Py_PROTO(x)
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#endif
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/* typedefs for some C9X-defined synonyms for integral types.
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*
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* The names in Python are exactly the same as the C9X names, except with a
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* Py_ prefix. Until C9X is universally implemented, this is the only way
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* to ensure that Python gets reliable names that don't conflict with names
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* in non-Python code that are playing their own tricks to define the C9X
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* names.
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*
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* NOTE: don't go nuts here! Python has no use for *most* of the C9X
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* integral synonyms. Only define the ones we actually need.
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*/
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#ifdef HAVE_LONG_LONG
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#ifndef PY_LONG_LONG
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#define PY_LONG_LONG long long
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#if defined(LLONG_MAX)
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/* If LLONG_MAX is defined in limits.h, use that. */
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#define PY_LLONG_MIN LLONG_MIN
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#define PY_LLONG_MAX LLONG_MAX
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#define PY_ULLONG_MAX ULLONG_MAX
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#elif defined(__LONG_LONG_MAX__)
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/* Otherwise, if GCC has a builtin define, use that. */
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#define PY_LLONG_MAX __LONG_LONG_MAX__
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#define PY_LLONG_MIN (-PY_LLONG_MAX-1)
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#define PY_ULLONG_MAX (__LONG_LONG_MAX__*2ULL + 1ULL)
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#else
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/* Otherwise, rely on two's complement. */
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#define PY_ULLONG_MAX (~0ULL)
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#define PY_LLONG_MAX ((long long)(PY_ULLONG_MAX>>1))
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#define PY_LLONG_MIN (-PY_LLONG_MAX-1)
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#endif /* LLONG_MAX */
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#endif
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#endif /* HAVE_LONG_LONG */
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/* uintptr_t is the C9X name for an unsigned integral type such that a
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* legitimate void* can be cast to uintptr_t and then back to void* again
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* without loss of information. Similarly for intptr_t, wrt a signed
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* integral type.
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*/
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#ifdef HAVE_UINTPTR_T
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typedef uintptr_t Py_uintptr_t;
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typedef intptr_t Py_intptr_t;
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#elif SIZEOF_VOID_P <= SIZEOF_INT
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typedef unsigned int Py_uintptr_t;
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typedef int Py_intptr_t;
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#elif SIZEOF_VOID_P <= SIZEOF_LONG
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typedef unsigned long Py_uintptr_t;
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typedef long Py_intptr_t;
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#elif defined(HAVE_LONG_LONG) && (SIZEOF_VOID_P <= SIZEOF_LONG_LONG)
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typedef unsigned PY_LONG_LONG Py_uintptr_t;
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typedef PY_LONG_LONG Py_intptr_t;
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#else
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# error "Python needs a typedef for Py_uintptr_t in pyport.h."
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#endif /* HAVE_UINTPTR_T */
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/* Py_ssize_t is a signed integral type such that sizeof(Py_ssize_t) ==
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* sizeof(size_t). C99 doesn't define such a thing directly (size_t is an
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* unsigned integral type). See PEP 353 for details.
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*/
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#ifdef HAVE_SSIZE_T
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typedef ssize_t Py_ssize_t;
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#elif SIZEOF_VOID_P == SIZEOF_SIZE_T
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typedef Py_intptr_t Py_ssize_t;
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#else
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# error "Python needs a typedef for Py_ssize_t in pyport.h."
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#endif
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/* Largest positive value of type Py_ssize_t. */
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#define PY_SSIZE_T_MAX ((Py_ssize_t)(((size_t)-1)>>1))
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/* Smallest negative value of type Py_ssize_t. */
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#define PY_SSIZE_T_MIN (-PY_SSIZE_T_MAX-1)
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/* PY_FORMAT_SIZE_T is a platform-specific modifier for use in a printf
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* format to convert an argument with the width of a size_t or Py_ssize_t.
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* C99 introduced "z" for this purpose, but not all platforms support that;
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* e.g., MS compilers use "I" instead.
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*
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* These "high level" Python format functions interpret "z" correctly on
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* all platforms (Python interprets the format string itself, and does whatever
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* the platform C requires to convert a size_t/Py_ssize_t argument):
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*
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* PyString_FromFormat
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* PyErr_Format
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* PyString_FromFormatV
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*
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* Lower-level uses require that you interpolate the correct format modifier
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* yourself (e.g., calling printf, fprintf, sprintf, PyOS_snprintf); for
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* example,
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*
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* Py_ssize_t index;
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* fprintf(stderr, "index %" PY_FORMAT_SIZE_T "d sucks\n", index);
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*
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* That will expand to %ld, or %Id, or to something else correct for a
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* Py_ssize_t on the platform.
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*/
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#ifndef PY_FORMAT_SIZE_T
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# if SIZEOF_SIZE_T == SIZEOF_INT && !defined(__APPLE__)
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# define PY_FORMAT_SIZE_T ""
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# elif SIZEOF_SIZE_T == SIZEOF_LONG
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# define PY_FORMAT_SIZE_T "l"
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# elif defined(MS_WINDOWS)
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# define PY_FORMAT_SIZE_T "I"
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# else
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# error "This platform's pyconfig.h needs to define PY_FORMAT_SIZE_T"
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# endif
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#endif
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/* Py_LOCAL can be used instead of static to get the fastest possible calling
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* convention for functions that are local to a given module.
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*
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* Py_LOCAL_INLINE does the same thing, and also explicitly requests inlining,
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* for platforms that support that.
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*
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* If PY_LOCAL_AGGRESSIVE is defined before python.h is included, more
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* "aggressive" inlining/optimizaion is enabled for the entire module. This
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* may lead to code bloat, and may slow things down for those reasons. It may
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* also lead to errors, if the code relies on pointer aliasing. Use with
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* care.
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*
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* NOTE: You can only use this for functions that are entirely local to a
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* module; functions that are exported via method tables, callbacks, etc,
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* should keep using static.
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*/
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#undef USE_INLINE /* XXX - set via configure? */
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#if defined(_MSC_VER)
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#if defined(PY_LOCAL_AGGRESSIVE)
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/* enable more aggressive optimization for visual studio */
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#pragma optimize("agtw", on)
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#endif
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/* ignore warnings if the compiler decides not to inline a function */
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#pragma warning(disable: 4710)
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/* fastest possible local call under MSVC */
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#define Py_LOCAL(type) static type __fastcall
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#define Py_LOCAL_INLINE(type) static __inline type __fastcall
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#elif defined(USE_INLINE)
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#define Py_LOCAL(type) static type
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#define Py_LOCAL_INLINE(type) static inline type
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#else
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#define Py_LOCAL(type) static type
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#define Py_LOCAL_INLINE(type) static type
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#endif
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/* Py_MEMCPY can be used instead of memcpy in cases where the copied blocks
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* are often very short. While most platforms have highly optimized code for
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* large transfers, the setup costs for memcpy are often quite high. MEMCPY
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* solves this by doing short copies "in line".
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*/
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#if defined(_MSC_VER)
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#define Py_MEMCPY(target, source, length) do { \
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size_t i_, n_ = (length); \
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char *t_ = (void*) (target); \
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const char *s_ = (void*) (source); \
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if (n_ >= 16) \
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memcpy(t_, s_, n_); \
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else \
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for (i_ = 0; i_ < n_; i_++) \
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t_[i_] = s_[i_]; \
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} while (0)
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#else
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#define Py_MEMCPY memcpy
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#endif
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#include <stdlib.h>
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#include <math.h> /* Moved here from the math section, before extern "C" */
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/********************************************
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* WRAPPER FOR <time.h> and/or <sys/time.h> *
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********************************************/
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#ifdef TIME_WITH_SYS_TIME
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#include <sys/time.h>
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#include <time.h>
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#else /* !TIME_WITH_SYS_TIME */
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#ifdef HAVE_SYS_TIME_H
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#include <sys/time.h>
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#else /* !HAVE_SYS_TIME_H */
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#include <time.h>
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#endif /* !HAVE_SYS_TIME_H */
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#endif /* !TIME_WITH_SYS_TIME */
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/******************************
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* WRAPPER FOR <sys/select.h> *
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******************************/
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/* NB caller must include <sys/types.h> */
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#ifdef HAVE_SYS_SELECT_H
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#include <sys/select.h>
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#endif /* !HAVE_SYS_SELECT_H */
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/*******************************
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* stat() and fstat() fiddling *
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*******************************/
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/* We expect that stat and fstat exist on most systems.
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* It's confirmed on Unix, Mac and Windows.
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* If you don't have them, add
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* #define DONT_HAVE_STAT
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* and/or
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* #define DONT_HAVE_FSTAT
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* to your pyconfig.h. Python code beyond this should check HAVE_STAT and
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* HAVE_FSTAT instead.
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* Also
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* #define HAVE_SYS_STAT_H
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* if <sys/stat.h> exists on your platform, and
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* #define HAVE_STAT_H
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* if <stat.h> does.
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*/
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#ifndef DONT_HAVE_STAT
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#define HAVE_STAT
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#endif
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#ifndef DONT_HAVE_FSTAT
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#define HAVE_FSTAT
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#endif
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#ifdef RISCOS
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#include <sys/types.h>
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#include "unixstuff.h"
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#endif
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#ifdef HAVE_SYS_STAT_H
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#if defined(PYOS_OS2) && defined(PYCC_GCC)
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#include <sys/types.h>
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#endif
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#include <sys/stat.h>
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#elif defined(HAVE_STAT_H)
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#include <stat.h>
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#endif
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#if defined(PYCC_VACPP)
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/* VisualAge C/C++ Failed to Define MountType Field in sys/stat.h */
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#define S_IFMT (S_IFDIR|S_IFCHR|S_IFREG)
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#endif
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#ifndef S_ISREG
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#define S_ISREG(x) (((x) & S_IFMT) == S_IFREG)
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#endif
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#ifndef S_ISDIR
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#define S_ISDIR(x) (((x) & S_IFMT) == S_IFDIR)
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#endif
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#ifdef __cplusplus
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/* Move this down here since some C++ #include's don't like to be included
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inside an extern "C" */
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extern "C" {
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#endif
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/* Py_ARITHMETIC_RIGHT_SHIFT
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* C doesn't define whether a right-shift of a signed integer sign-extends
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* or zero-fills. Here a macro to force sign extension:
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* Py_ARITHMETIC_RIGHT_SHIFT(TYPE, I, J)
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* Return I >> J, forcing sign extension.
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* Requirements:
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* I is of basic signed type TYPE (char, short, int, long, or long long).
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* TYPE is one of char, short, int, long, or long long, although long long
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* must not be used except on platforms that support it.
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* J is an integer >= 0 and strictly less than the number of bits in TYPE
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* (because C doesn't define what happens for J outside that range either).
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* Caution:
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* I may be evaluated more than once.
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*/
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#ifdef SIGNED_RIGHT_SHIFT_ZERO_FILLS
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#define Py_ARITHMETIC_RIGHT_SHIFT(TYPE, I, J) \
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((I) < 0 ? ~((~(unsigned TYPE)(I)) >> (J)) : (I) >> (J))
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#else
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#define Py_ARITHMETIC_RIGHT_SHIFT(TYPE, I, J) ((I) >> (J))
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#endif
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/* Py_FORCE_EXPANSION(X)
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* "Simply" returns its argument. However, macro expansions within the
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* argument are evaluated. This unfortunate trickery is needed to get
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* token-pasting to work as desired in some cases.
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*/
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#define Py_FORCE_EXPANSION(X) X
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/* Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW)
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* Cast VALUE to type NARROW from type WIDE. In Py_DEBUG mode, this
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* assert-fails if any information is lost.
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* Caution:
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* VALUE may be evaluated more than once.
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*/
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#ifdef Py_DEBUG
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#define Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW) \
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(assert((WIDE)(NARROW)(VALUE) == (VALUE)), (NARROW)(VALUE))
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#else
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#define Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW) (NARROW)(VALUE)
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#endif
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/* High precision defintion of pi and e (Euler)
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* The values are taken from libc6's math.h.
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*/
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#ifndef Py_MATH_PIl
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#define Py_MATH_PIl 3.1415926535897932384626433832795029L
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#endif
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#ifndef Py_MATH_PI
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#define Py_MATH_PI 3.14159265358979323846
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#endif
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#ifndef Py_MATH_El
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#define Py_MATH_El 2.7182818284590452353602874713526625L
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#endif
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#ifndef Py_MATH_E
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#define Py_MATH_E 2.7182818284590452354
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#endif
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/* Py_IS_NAN(X)
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* Return 1 if float or double arg is a NaN, else 0.
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* Caution:
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* X is evaluated more than once.
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* This may not work on all platforms. Each platform has *some*
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* way to spell this, though -- override in pyconfig.h if you have
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* a platform where it doesn't work.
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*/
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#ifndef Py_IS_NAN
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#ifdef HAVE_ISNAN
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#define Py_IS_NAN(X) isnan(X)
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#else
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#define Py_IS_NAN(X) ((X) != (X))
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#endif
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#endif
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/* Py_IS_INFINITY(X)
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* Return 1 if float or double arg is an infinity, else 0.
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* Caution:
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* X is evaluated more than once.
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* This implementation may set the underflow flag if |X| is very small;
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* it really can't be implemented correctly (& easily) before C99.
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* Override in pyconfig.h if you have a better spelling on your platform.
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*/
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#ifndef Py_IS_INFINITY
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#ifdef HAVE_ISINF
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#define Py_IS_INFINITY(X) isinf(X)
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#else
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#define Py_IS_INFINITY(X) ((X) && (X)*0.5 == (X))
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#endif
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#endif
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/* Py_IS_FINITE(X)
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* Return 1 if float or double arg is neither infinite nor NAN, else 0.
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* Some compilers (e.g. VisualStudio) have intrisics for this, so a special
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* macro for this particular test is useful
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*/
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#ifndef Py_IS_FINITE
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#ifdef HAVE_FINITE
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#define Py_IS_FINITE(X) finite
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#else
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#define Py_IS_FINITE(X) (!Py_IS_INFINITY(X) && !Py_IS_NAN(X))
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#endif
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#endif
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/* HUGE_VAL is supposed to expand to a positive double infinity. Python
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* uses Py_HUGE_VAL instead because some platforms are broken in this
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* respect. We used to embed code in pyport.h to try to worm around that,
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* but different platforms are broken in conflicting ways. If you're on
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* a platform where HUGE_VAL is defined incorrectly, fiddle your Python
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* config to #define Py_HUGE_VAL to something that works on your platform.
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*/
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#ifndef Py_HUGE_VAL
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#define Py_HUGE_VAL HUGE_VAL
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#endif
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/* Py_NAN
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* A value that evaluates to a NaN. On IEEE 754 platforms INF*0 or
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* INF/INF works. Define Py_NO_NAN in pyconfig.h if your platform
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* doesn't support NaNs.
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*/
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#if !defined(Py_NAN) && !defined(Py_NO_NAN)
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#define Py_NAN (Py_HUGE_VAL * 0.)
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#endif
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|
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/* Py_OVERFLOWED(X)
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* Return 1 iff a libm function overflowed. Set errno to 0 before calling
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* a libm function, and invoke this macro after, passing the function
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* result.
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* Caution:
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* This isn't reliable. C99 no longer requires libm to set errno under
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* any exceptional condition, but does require +- HUGE_VAL return
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* values on overflow. A 754 box *probably* maps HUGE_VAL to a
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* double infinity, and we're cool if that's so, unless the input
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* was an infinity and an infinity is the expected result. A C89
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* system sets errno to ERANGE, so we check for that too. We're
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* out of luck if a C99 754 box doesn't map HUGE_VAL to +Inf, or
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* if the returned result is a NaN, or if a C89 box returns HUGE_VAL
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* in non-overflow cases.
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* X is evaluated more than once.
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* Some platforms have better way to spell this, so expect some #ifdef'ery.
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*
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* OpenBSD uses 'isinf()' because a compiler bug on that platform causes
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* the longer macro version to be mis-compiled. This isn't optimal, and
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* should be removed once a newer compiler is available on that platform.
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* The system that had the failure was running OpenBSD 3.2 on Intel, with
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* gcc 2.95.3.
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*
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* According to Tim's checkin, the FreeBSD systems use isinf() to work
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* around a FPE bug on that platform.
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*/
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#if defined(__FreeBSD__) || defined(__OpenBSD__)
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#define Py_OVERFLOWED(X) isinf(X)
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#else
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#define Py_OVERFLOWED(X) ((X) != 0.0 && (errno == ERANGE || \
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(X) == Py_HUGE_VAL || \
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(X) == -Py_HUGE_VAL))
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#endif
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/* Py_SET_ERRNO_ON_MATH_ERROR(x)
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* If a libm function did not set errno, but it looks like the result
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* overflowed or not-a-number, set errno to ERANGE or EDOM. Set errno
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* to 0 before calling a libm function, and invoke this macro after,
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* passing the function result.
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* 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)
|
|
|
|
/* 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 __BEOS__
|
|
/* Unchecked */
|
|
/* It's in the libs, but not the headers... - [cjh] */
|
|
int shutdown( int, int );
|
|
#endif
|
|
|
|
#ifdef HAVE__GETPTY
|
|
#include <sys/types.h> /* we need to import mode_t */
|
|
extern char * _getpty(int *, int, mode_t, int);
|
|
#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 int forkpty(int *, char *, struct termios *, struct winsize *);
|
|
#endif /* !defined(HAVE_PTY_H) && !defined(HAVE_LIBUTIL_H) */
|
|
#endif /* defined(HAVE_OPENPTY) || defined(HAVE_FORKPTY) */
|
|
|
|
|
|
/* These are pulled from various places. It isn't obvious on what platforms
|
|
they are necessary, nor what the exact prototype should look like (which
|
|
is likely to vary between platforms!) If you find you need one of these
|
|
declarations, please move them to a platform-specific block and include
|
|
proper prototypes. */
|
|
#if 0
|
|
|
|
/* From Modules/resource.c */
|
|
extern int getrusage();
|
|
extern int getpagesize();
|
|
|
|
/* From Python/sysmodule.c and Modules/posixmodule.c */
|
|
extern int fclose(FILE *);
|
|
|
|
/* From Modules/posixmodule.c */
|
|
extern int fdatasync(int);
|
|
#endif /* 0 */
|
|
|
|
|
|
/************************
|
|
* WRAPPER FOR <math.h> *
|
|
************************/
|
|
|
|
#ifndef HAVE_HYPOT
|
|
extern double hypot(double, double);
|
|
#endif
|
|
|
|
|
|
/* 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
|
|
#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
|
|
#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.
|
|
|
|
BeOS and cygwin are the only other autoconf platform requiring special
|
|
linkage handling and both of these use __declspec().
|
|
*/
|
|
#if defined(__CYGWIN__) || defined(__BEOS__)
|
|
# 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 (FIXME: BeOS too?) */
|
|
# if defined(__CYGWIN__)
|
|
# define PyMODINIT_FUNC __declspec(dllexport) void
|
|
# else /* __CYGWIN__ */
|
|
# define PyMODINIT_FUNC void
|
|
# 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 http://python.org/doc/FAQ.html#3.24 */
|
|
# 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) void
|
|
# else /* __cplusplus */
|
|
# define PyMODINIT_FUNC __declspec(dllexport) void
|
|
# 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" void
|
|
# else /* __cplusplus */
|
|
# define PyMODINIT_FUNC void
|
|
# endif /* __cplusplus */
|
|
#endif
|
|
|
|
/* Deprecated DL_IMPORT and DL_EXPORT macros */
|
|
#if defined(Py_ENABLE_SHARED) && defined (HAVE_DECLSPEC_DLL)
|
|
# if defined(Py_BUILD_CORE)
|
|
# define DL_IMPORT(RTYPE) __declspec(dllexport) RTYPE
|
|
# define DL_EXPORT(RTYPE) __declspec(dllexport) RTYPE
|
|
# else
|
|
# define DL_IMPORT(RTYPE) __declspec(dllimport) RTYPE
|
|
# define DL_EXPORT(RTYPE) __declspec(dllexport) RTYPE
|
|
# endif
|
|
#endif
|
|
#ifndef DL_EXPORT
|
|
# define DL_EXPORT(RTYPE) RTYPE
|
|
#endif
|
|
#ifndef DL_IMPORT
|
|
# define DL_IMPORT(RTYPE) RTYPE
|
|
#endif
|
|
/* End of deprecated DL_* macros */
|
|
|
|
/* If the fd manipulation macros aren't defined,
|
|
here is a set that should do the job */
|
|
|
|
#if 0 /* disabled and probably obsolete */
|
|
|
|
#ifndef FD_SETSIZE
|
|
#define FD_SETSIZE 256
|
|
#endif
|
|
|
|
#ifndef FD_SET
|
|
|
|
typedef long fd_mask;
|
|
|
|
#define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */
|
|
#ifndef howmany
|
|
#define howmany(x, y) (((x)+((y)-1))/(y))
|
|
#endif /* howmany */
|
|
|
|
typedef struct fd_set {
|
|
fd_mask fds_bits[howmany(FD_SETSIZE, NFDBITS)];
|
|
} fd_set;
|
|
|
|
#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS)))
|
|
#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS)))
|
|
#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS)))
|
|
#define FD_ZERO(p) memset((char *)(p), '\0', sizeof(*(p)))
|
|
|
|
#endif /* FD_SET */
|
|
|
|
#endif /* fd manipulation macros */
|
|
|
|
|
|
/* 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) ) && \
|
|
!defined(RISCOS)
|
|
#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
|
|
|
|
/* 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
|
|
|
|
#endif /* Py_PYPORT_H */
|