diff options
Diffstat (limited to 'Include/pyport.h')
| -rw-r--r-- | Include/pyport.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/Include/pyport.h b/Include/pyport.h index 2bce415c5c..74ce993497 100644 --- a/Include/pyport.h +++ b/Include/pyport.h @@ -137,6 +137,43 @@ typedef Py_intptr_t Py_ssize_t; # 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. + */ + +#undef USE_INLINE /* XXX - set via configure? */ + +#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 + #include <stdlib.h> #include <math.h> /* Moved here from the math section, before extern "C" */ @@ -295,6 +332,15 @@ extern "C" { #define Py_IS_INFINITY(X) ((X) && (X)*0.5 == (X)) #endif +/* Py_IS_FINITE(X) + * Return 1 if float or double arg is neither infinite nor NAN, else 0. + * Some compilers (e.g. VisualStudio) have intrisics for this, so a special + * macro for this particular test is useful + */ +#ifndef Py_IS_FINITE +#define Py_IS_FINITE(X) (!Py_IS_INFINITY(X) && !Py_IS_NAN(X)) +#endif + /* HUGE_VAL is supposed to expand to a positive double infinity. Python * uses Py_HUGE_VAL instead because some platforms are broken in this * respect. We used to embed code in pyport.h to try to worm around that, @@ -685,4 +731,16 @@ typedef struct fd_set { #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 */ |