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| 1 /* | 1 /* |
| 2 * Copyright (C) 2011, 2012 Apple Inc. All rights reserved. | 2 * Copyright (C) 2011, 2012 Apple Inc. All rights reserved. |
| 3 * | 3 * |
| 4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
| 6 * are met: | 6 * are met: |
| 7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
| 8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
| 10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
| 11 * documentation and/or other materials provided with the distribution. | 11 * documentation and/or other materials provided with the distribution. |
| 12 * | 12 * |
| 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY | 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR | 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 24 */ | 24 */ |
| 25 | 25 |
| 26 #ifndef WTF_Compiler_h | 26 #ifndef WTF_Compiler_h |
| 27 #define WTF_Compiler_h | 27 #define WTF_Compiler_h |
| 28 | 28 |
| 29 /* COMPILER() - the compiler being used to build the project */ | 29 /* COMPILER() - the compiler being used to build the project */ |
| 30 #define COMPILER(WTF_FEATURE) (defined WTF_COMPILER_##WTF_FEATURE && WTF_COMPIL
ER_##WTF_FEATURE) | 30 #define COMPILER(WTF_FEATURE) (defined WTF_COMPILER_##WTF_FEATURE && WTF_COMPILE
R_##WTF_FEATURE) |
| 31 | 31 |
| 32 /* COMPILER_SUPPORTS() - whether the compiler being used to build the project su
pports the given feature. */ | 32 /* COMPILER_SUPPORTS() - whether the compiler being used to build the project su
pports the given feature. */ |
| 33 #define COMPILER_SUPPORTS(WTF_COMPILER_FEATURE) (defined WTF_COMPILER_SUPPORTS_#
#WTF_COMPILER_FEATURE && WTF_COMPILER_SUPPORTS_##WTF_COMPILER_FEATURE) | 33 #define COMPILER_SUPPORTS(WTF_COMPILER_FEATURE) (defined WTF_COMPILER_SUPPORTS_#
#WTF_COMPILER_FEATURE && WTF_COMPILER_SUPPORTS_##WTF_COMPILER_FEATURE) |
| 34 | 34 |
| 35 /* COMPILER_QUIRK() - whether the compiler being used to build the project requi
res a given quirk. */ | 35 /* COMPILER_QUIRK() - whether the compiler being used to build the project requi
res a given quirk. */ |
| 36 #define COMPILER_QUIRK(WTF_COMPILER_QUIRK) (defined WTF_COMPILER_QUIRK_##WTF_COM
PILER_QUIRK && WTF_COMPILER_QUIRK_##WTF_COMPILER_QUIRK) | 36 #define COMPILER_QUIRK(WTF_COMPILER_QUIRK) (defined WTF_COMPILER_QUIRK_##WTF_COM
PILER_QUIRK && WTF_COMPILER_QUIRK_##WTF_COMPILER_QUIRK) |
| 37 | 37 |
| 38 /* ==== COMPILER() - the compiler being used to build the project ==== */ | 38 /* ==== COMPILER() - the compiler being used to build the project ==== */ |
| 39 | 39 |
| 40 /* COMPILER(CLANG) - Clang */ | 40 /* COMPILER(CLANG) - Clang */ |
| 41 #if defined(__clang__) | 41 #if defined(__clang__) |
| 42 #define WTF_COMPILER_CLANG 1 | 42 #define WTF_COMPILER_CLANG 1 |
| 43 #endif | 43 #endif |
| 44 | 44 |
| 45 /* COMPILER(MSVC) - Microsoft Visual C++ (and Clang when compiling for Windows).
*/ | 45 /* COMPILER(MSVC) - Microsoft Visual C++ (and Clang when compiling for Windows).
*/ |
| 46 #if defined(_MSC_VER) | 46 #if defined(_MSC_VER) |
| 47 #define WTF_COMPILER_MSVC 1 | 47 #define WTF_COMPILER_MSVC 1 |
| 48 #endif | 48 #endif |
| 49 | 49 |
| 50 /* COMPILER(GCC) - GNU Compiler Collection (and Clang when compiling for platfor
ms other than Windows). */ | 50 /* COMPILER(GCC) - GNU Compiler Collection (and Clang when compiling for platfor
ms other than Windows). */ |
| 51 #if defined(__GNUC__) | 51 #if defined(__GNUC__) |
| 52 #define WTF_COMPILER_GCC 1 | 52 #define WTF_COMPILER_GCC 1 |
| 53 #define GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL
__) | 53 #define GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL
__) |
| 54 #define GCC_VERSION_AT_LEAST(major, minor, patch) (GCC_VERSION >= (major * 10000
+ minor * 100 + patch)) | 54 #define GCC_VERSION_AT_LEAST(major, minor, patch) (GCC_VERSION >= (major * 10000
+ minor * 100 + patch)) |
| 55 #else | 55 #else |
| 56 /* Define this for !GCC compilers, just so we can write things like GCC_VERSION_
AT_LEAST(4, 1, 0). */ | 56 /* Define this for !GCC compilers, just so we can write things like GCC_VERSION_
AT_LEAST(4, 1, 0). */ |
| 57 #define GCC_VERSION_AT_LEAST(major, minor, patch) 0 | 57 #define GCC_VERSION_AT_LEAST(major, minor, patch) 0 |
| 58 #endif | 58 #endif |
| 59 | 59 |
| 60 /* ==== Compiler features ==== */ | 60 /* ==== Compiler features ==== */ |
| 61 | 61 |
| 62 | |
| 63 /* ALWAYS_INLINE */ | 62 /* ALWAYS_INLINE */ |
| 64 | 63 |
| 65 #ifndef ALWAYS_INLINE | 64 #ifndef ALWAYS_INLINE |
| 66 #if COMPILER(GCC) && defined(NDEBUG) && !COMPILER(MINGW) | 65 #if COMPILER(GCC) && defined(NDEBUG) && !COMPILER(MINGW) |
| 67 #define ALWAYS_INLINE inline __attribute__((__always_inline__)) | 66 #define ALWAYS_INLINE inline __attribute__((__always_inline__)) |
| 68 #elif COMPILER(MSVC) && defined(NDEBUG) | 67 #elif COMPILER(MSVC) && defined(NDEBUG) |
| 69 #define ALWAYS_INLINE __forceinline | 68 #define ALWAYS_INLINE __forceinline |
| 70 #else | 69 #else |
| 71 #define ALWAYS_INLINE inline | 70 #define ALWAYS_INLINE inline |
| 72 #endif | 71 #endif |
| 73 #endif | 72 #endif |
| 74 | 73 |
| 75 | |
| 76 /* NEVER_INLINE */ | 74 /* NEVER_INLINE */ |
| 77 | 75 |
| 78 #ifndef NEVER_INLINE | 76 #ifndef NEVER_INLINE |
| 79 #if COMPILER(GCC) | 77 #if COMPILER(GCC) |
| 80 #define NEVER_INLINE __attribute__((__noinline__)) | 78 #define NEVER_INLINE __attribute__((__noinline__)) |
| 81 #elif COMPILER(MSVC) | 79 #elif COMPILER(MSVC) |
| 82 #define NEVER_INLINE __declspec(noinline) | 80 #define NEVER_INLINE __declspec(noinline) |
| 83 #else | 81 #else |
| 84 #define NEVER_INLINE | 82 #define NEVER_INLINE |
| 85 #endif | 83 #endif |
| 86 #endif | 84 #endif |
| 87 | 85 |
| 88 | |
| 89 /* UNLIKELY */ | 86 /* UNLIKELY */ |
| 90 | 87 |
| 91 #ifndef UNLIKELY | 88 #ifndef UNLIKELY |
| 92 #if COMPILER(GCC) | 89 #if COMPILER(GCC) |
| 93 #define UNLIKELY(x) __builtin_expect((x), 0) | 90 #define UNLIKELY(x) __builtin_expect((x), 0) |
| 94 #else | 91 #else |
| 95 #define UNLIKELY(x) (x) | 92 #define UNLIKELY(x) (x) |
| 96 #endif | 93 #endif |
| 97 #endif | 94 #endif |
| 98 | 95 |
| 99 | |
| 100 /* LIKELY */ | 96 /* LIKELY */ |
| 101 | 97 |
| 102 #ifndef LIKELY | 98 #ifndef LIKELY |
| 103 #if COMPILER(GCC) | 99 #if COMPILER(GCC) |
| 104 #define LIKELY(x) __builtin_expect((x), 1) | 100 #define LIKELY(x) __builtin_expect((x), 1) |
| 105 #else | 101 #else |
| 106 #define LIKELY(x) (x) | 102 #define LIKELY(x) (x) |
| 107 #endif | 103 #endif |
| 108 #endif | 104 #endif |
| 109 | 105 |
| 110 | |
| 111 /* NO_RETURN */ | 106 /* NO_RETURN */ |
| 112 | 107 |
| 113 #ifndef NO_RETURN | 108 #ifndef NO_RETURN |
| 114 #if COMPILER(GCC) | 109 #if COMPILER(GCC) |
| 115 #define NO_RETURN __attribute((__noreturn__)) | 110 #define NO_RETURN __attribute((__noreturn__)) |
| 116 #elif COMPILER(MSVC) | 111 #elif COMPILER(MSVC) |
| 117 #define NO_RETURN __declspec(noreturn) | 112 #define NO_RETURN __declspec(noreturn) |
| 118 #else | 113 #else |
| 119 #define NO_RETURN | 114 #define NO_RETURN |
| 120 #endif | 115 #endif |
| 121 #endif | 116 #endif |
| 122 | 117 |
| 123 | |
| 124 /* WARN_UNUSED_RETURN */ | 118 /* WARN_UNUSED_RETURN */ |
| 125 | 119 |
| 126 #if COMPILER(GCC) | 120 #if COMPILER(GCC) |
| 127 #define WARN_UNUSED_RETURN __attribute__ ((warn_unused_result)) | 121 #define WARN_UNUSED_RETURN __attribute__((warn_unused_result)) |
| 128 #else | 122 #else |
| 129 #define WARN_UNUSED_RETURN | 123 #define WARN_UNUSED_RETURN |
| 130 #endif | 124 #endif |
| 131 | 125 |
| 132 | |
| 133 /* ALLOW_UNUSED_LOCAL */ | 126 /* ALLOW_UNUSED_LOCAL */ |
| 134 | 127 |
| 135 #define ALLOW_UNUSED_LOCAL(x) false ? (void)x : (void)0 | 128 #define ALLOW_UNUSED_LOCAL(x) false ? (void)x : (void)0 |
| 136 | 129 |
| 137 | |
| 138 /* OBJC_CLASS */ | 130 /* OBJC_CLASS */ |
| 139 | 131 |
| 140 #ifndef OBJC_CLASS | 132 #ifndef OBJC_CLASS |
| 141 #ifdef __OBJC__ | 133 #ifdef __OBJC__ |
| 142 #define OBJC_CLASS @class | 134 #define OBJC_CLASS @class |
| 143 #else | 135 #else |
| 144 #define OBJC_CLASS class | 136 #define OBJC_CLASS class |
| 145 #endif | 137 #endif |
| 146 #endif | 138 #endif |
| 147 | 139 |
| 148 | |
| 149 /* WTF_PRETTY_FUNCTION */ | 140 /* WTF_PRETTY_FUNCTION */ |
| 150 | 141 |
| 151 #if COMPILER(GCC) | 142 #if COMPILER(GCC) |
| 152 #define WTF_COMPILER_SUPPORTS_PRETTY_FUNCTION 1 | 143 #define WTF_COMPILER_SUPPORTS_PRETTY_FUNCTION 1 |
| 153 #define WTF_PRETTY_FUNCTION __PRETTY_FUNCTION__ | 144 #define WTF_PRETTY_FUNCTION __PRETTY_FUNCTION__ |
| 154 #elif COMPILER(MSVC) | 145 #elif COMPILER(MSVC) |
| 155 #define WTF_COMPILER_SUPPORTS_PRETTY_FUNCTION 1 | 146 #define WTF_COMPILER_SUPPORTS_PRETTY_FUNCTION 1 |
| 156 #define WTF_PRETTY_FUNCTION __FUNCSIG__ | 147 #define WTF_PRETTY_FUNCTION __FUNCSIG__ |
| 157 #else | 148 #else |
| 158 #define WTF_PRETTY_FUNCTION __FUNCTION__ | 149 #define WTF_PRETTY_FUNCTION __FUNCTION__ |
| 159 #endif | 150 #endif |
| 160 | 151 |
| 161 | |
| 162 /* NO_SANITIZE_UNRELATED_CAST - Disable runtime checks related to casts between | 152 /* NO_SANITIZE_UNRELATED_CAST - Disable runtime checks related to casts between |
| 163 * unrelated objects (-fsanitize=cfi-unrelated-cast or -fsanitize=vptr). */ | 153 * unrelated objects (-fsanitize=cfi-unrelated-cast or -fsanitize=vptr). */ |
| 164 | 154 |
| 165 #if COMPILER(CLANG) | 155 #if COMPILER(CLANG) |
| 166 #define NO_SANITIZE_UNRELATED_CAST __attribute__((no_sanitize("cfi-unrelated-cas
t", "vptr"))) | 156 #define NO_SANITIZE_UNRELATED_CAST __attribute__((no_sanitize("cfi-unrelated-cas
t", "vptr"))) |
| 167 #else | 157 #else |
| 168 #define NO_SANITIZE_UNRELATED_CAST | 158 #define NO_SANITIZE_UNRELATED_CAST |
| 169 #endif | 159 #endif |
| 170 | 160 |
| 171 #endif /* WTF_Compiler_h */ | 161 #endif /* WTF_Compiler_h */ |
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