관리-도구

편집 파일: port.h

/* Copyright 2016 Google Inc. All Rights Reserved. Distributed under MIT license. See file LICENSE for detail or copy at https://opensource.org/licenses/MIT */ /* Macros for compiler / platform specific features and build options. */ #ifndef BROTLI_COMMON_PORT_H_ #define BROTLI_COMMON_PORT_H_ /* Compatibility with non-clang compilers. */ #ifndef __has_builtin #define __has_builtin(x) 0 #endif #ifndef __has_attribute #define __has_attribute(x) 0 #endif #ifndef __has_feature #define __has_feature(x) 0 #endif #if defined(__GNUC__) && defined(__GNUC_MINOR__) #define BROTLI_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__) #else #define BROTLI_GCC_VERSION 0 #endif #if defined(__ICC) #define BROTLI_ICC_VERSION __ICC #else #define BROTLI_ICC_VERSION 0 #endif #if defined(BROTLI_BUILD_MODERN_COMPILER) #define BROTLI_MODERN_COMPILER 1 #elif BROTLI_GCC_VERSION >= 304 || BROTLI_ICC_VERSION >= 1600 #define BROTLI_MODERN_COMPILER 1 #else #define BROTLI_MODERN_COMPILER 0 #endif /* Define "BROTLI_PREDICT_TRUE" and "BROTLI_PREDICT_FALSE" macros for capable compilers. To apply compiler hint, enclose the branching condition into macros, like this: if (BROTLI_PREDICT_TRUE(zero == 0)) { // main execution path } else { // compiler should place this code outside of main execution path } OR: if (BROTLI_PREDICT_FALSE(something_rare_or_unexpected_happens)) { // compiler should place this code outside of main execution path } */ #if BROTLI_MODERN_COMPILER || __has_builtin(__builtin_expect) #define BROTLI_PREDICT_TRUE(x) (__builtin_expect(!!(x), 1)) #define BROTLI_PREDICT_FALSE(x) (__builtin_expect(x, 0)) #else #define BROTLI_PREDICT_FALSE(x) (x) #define BROTLI_PREDICT_TRUE(x) (x) #endif #if BROTLI_MODERN_COMPILER || __has_attribute(always_inline) #define BROTLI_ATTRIBUTE_ALWAYS_INLINE __attribute__ ((always_inline)) #else #define BROTLI_ATTRIBUTE_ALWAYS_INLINE #endif #if defined(_WIN32) || defined(__CYGWIN__) #define BROTLI_ATTRIBUTE_VISIBILITY_HIDDEN #elif BROTLI_MODERN_COMPILER || __has_attribute(visibility) #define BROTLI_ATTRIBUTE_VISIBILITY_HIDDEN \ __attribute__ ((visibility ("hidden"))) #else #define BROTLI_ATTRIBUTE_VISIBILITY_HIDDEN #endif #ifndef BROTLI_INTERNAL #define BROTLI_INTERNAL BROTLI_ATTRIBUTE_VISIBILITY_HIDDEN #endif #if defined(BROTLI_SHARED_COMPILATION) && defined(_WIN32) #if defined(BROTLICOMMON_SHARED_COMPILATION) #define BROTLI_COMMON_API __declspec(dllexport) #else #define BROTLI_COMMON_API __declspec(dllimport) #endif /* BROTLICOMMON_SHARED_COMPILATION */ #if defined(BROTLIDEC_SHARED_COMPILATION) #define BROTLI_DEC_API __declspec(dllexport) #else #define BROTLI_DEC_API __declspec(dllimport) #endif /* BROTLIDEC_SHARED_COMPILATION */ #if defined(BROTLIENC_SHARED_COMPILATION) #define BROTLI_ENC_API __declspec(dllexport) #else #define BROTLI_ENC_API __declspec(dllimport) #endif /* BROTLIENC_SHARED_COMPILATION */ #else /* BROTLI_SHARED_COMPILATION && _WIN32 */ #define BROTLI_COMMON_API #define BROTLI_DEC_API #define BROTLI_ENC_API #endif #ifndef _MSC_VER #if defined(__cplusplus) || !defined(__STRICT_ANSI__) || \ (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) #define BROTLI_INLINE inline BROTLI_ATTRIBUTE_ALWAYS_INLINE #else #define BROTLI_INLINE #endif #else /* _MSC_VER */ #define BROTLI_INLINE __forceinline #endif /* _MSC_VER */ #if !defined(__cplusplus) && !defined(c_plusplus) && \ (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) #define BROTLI_RESTRICT restrict #elif BROTLI_GCC_VERSION > 295 || defined(__llvm__) #define BROTLI_RESTRICT __restrict #else #define BROTLI_RESTRICT #endif #if BROTLI_MODERN_COMPILER || __has_attribute(noinline) #define BROTLI_NOINLINE __attribute__((noinline)) #else #define BROTLI_NOINLINE #endif #if BROTLI_MODERN_COMPILER || __has_attribute(deprecated) #define BROTLI_DEPRECATED __attribute__((deprecated)) #else #define BROTLI_DEPRECATED #endif #define BROTLI_UNUSED(X) (void)(X) #endif /* BROTLI_COMMON_PORT_H_ */