diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/core/SkPreConfig.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/core/SkPreConfig.h b/include/core/SkPreConfig.h index bbf0124117..55b1abf3bc 100644 --- a/include/core/SkPreConfig.h +++ b/include/core/SkPreConfig.h @@ -173,5 +173,21 @@ #define SK_API #endif +////////////////////////////////////////////////////////////////////// + +/** + * Use SK_PURE_FUNC as an attribute to indicate that a function's + * return value only depends on the value of its parameters. This + * can help the compiler optimize out successive calls. + * + * Usage: + * void function(int params) SK_PURE_FUNC; + */ +#if defined(__GNUC__) +# define SK_PURE_FUNC __attribute__((pure)) +#else +# define SK_PURE_FUNC /* nothing */ +#endif + #endif |