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Diffstat (limited to 'mysql/my_compiler.h')
| -rw-r--r-- | mysql/my_compiler.h | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/mysql/my_compiler.h b/mysql/my_compiler.h deleted file mode 100644 index 2092537..0000000 --- a/mysql/my_compiler.h +++ /dev/null @@ -1,178 +0,0 @@ -#ifndef MY_COMPILER_INCLUDED -#define MY_COMPILER_INCLUDED - -/* Copyright (c) 2010, 2016, Oracle and/or its affiliates. All rights reserved. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; version 2 of the License. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ - -/** - Header for compiler-dependent features. - - Intended to contain a set of reusable wrappers for preprocessor - macros, attributes, pragmas, and any other features that are - specific to a target compiler. -*/ - -#include <stddef.h> /* size_t */ - -#if defined __GNUC__ -/* - Convenience macro to test the minimum required GCC version. - These should be used with care as Clang also sets __GNUC__ and - __GNUC_MINOR__ (currently to 4.2). Prefer using feature specific - CMake checks in configure.cmake instead. -*/ -# define MY_GNUC_PREREQ(maj, min) \ - ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) -# define GCC_VERSION (__GNUC__ * 1000 + __GNUC_MINOR__) -#else -# define MY_GNUC_PREREQ(maj, min) (0) -#endif - -/* - The macros below are borrowed from include/linux/compiler.h in the - Linux kernel. Use them to indicate the likelyhood of the truthfulness - of a condition. This serves two purposes - newer versions of gcc will be - able to optimize for branch predication, which could yield siginficant - performance gains in frequently executed sections of the code, and the - other reason to use them is for documentation -*/ -#ifdef HAVE_BUILTIN_EXPECT - -// likely/unlikely are likely to clash with other symbols, do not #define -#if defined(__cplusplus) -inline bool likely(bool expr) -{ - return __builtin_expect(expr, true); -} -inline bool unlikely(bool expr) -{ - return __builtin_expect(expr, false); -} -#else -# define likely(x) __builtin_expect((x),1) -# define unlikely(x) __builtin_expect((x),0) -#endif - -#else /* HAVE_BUILTIN_EXPECT */ - -#if defined(__cplusplus) -inline bool likely(bool expr) -{ - return expr; -} -inline bool unlikely(bool expr) -{ - return expr; -} -#else -# define likely(x) (x) -# define unlikely(x) (x) -#endif - -#endif /* HAVE_BUILTIN_EXPECT */ - -/* Comunicate to the compiler the unreachability of the code. */ -#ifdef HAVE_BUILTIN_UNREACHABLE -# define MY_ASSERT_UNREACHABLE() __builtin_unreachable() -#else -# define MY_ASSERT_UNREACHABLE() do { assert(0); } while (0) -#endif - -#if defined __GNUC__ || defined __SUNPRO_C || defined __SUNPRO_CC -/* Specifies the minimum alignment of a type. */ -# define MY_ALIGNOF(type) __alignof__(type) -/* Determine the alignment requirement of a type. */ -# define MY_ALIGNED(n) __attribute__((__aligned__((n)))) -/* Microsoft Visual C++ */ -#elif defined _MSC_VER -# define MY_ALIGNOF(type) __alignof(type) -# define MY_ALIGNED(n) __declspec(align(n)) -#else /* Make sure they are defined for other compilers. */ -# define MY_ALIGNOF(type) -# define MY_ALIGNED(size) -#endif - -/* Visual Studio requires '__inline' for C code */ -#if !defined(__cplusplus) && defined(_MSC_VER) -# define inline __inline -#endif - -/* Provide __func__ macro definition for Visual Studio. */ -#if defined(_MSC_VER) -# define __func__ __FUNCTION__ -#endif - -/** - C++ Type Traits -*/ -#ifdef __cplusplus - -/** - Opaque storage with a particular alignment. - Partial specialization used due to MSVC++. -*/ -template<size_t alignment> struct my_alignment_imp; -template<> struct MY_ALIGNED(1) my_alignment_imp<1> {}; -template<> struct MY_ALIGNED(2) my_alignment_imp<2> {}; -template<> struct MY_ALIGNED(4) my_alignment_imp<4> {}; -template<> struct MY_ALIGNED(8) my_alignment_imp<8> {}; -template<> struct MY_ALIGNED(16) my_alignment_imp<16> {}; - -/** - A POD type with a given size and alignment. - - @remark If the compiler does not support a alignment attribute - (MY_ALIGN macro), the default alignment of a double is - used instead. - - @tparam size The minimum size. - @tparam alignment The desired alignment: 1, 2, 4, 8 or 16. -*/ -template <size_t size, size_t alignment> -struct my_aligned_storage -{ - union - { - char data[size]; - my_alignment_imp<alignment> align; - }; -}; - -#endif /* __cplusplus */ - -/* - Disable MY_ATTRIBUTE for Sun Studio and Visual Studio. - Note that Sun Studio supports some __attribute__ variants, - but not format or unused which we use quite a lot. -*/ -#ifndef MY_ATTRIBUTE -#if defined(__GNUC__) -# define MY_ATTRIBUTE(A) __attribute__(A) -#else -# define MY_ATTRIBUTE(A) -#endif -#endif - -#ifndef __has_attribute -# define __has_attribute(x) 0 -#endif - -#if __has_attribute(no_sanitize_undefined) -# define SUPPRESS_UBSAN __attribute__((no_sanitize_undefined)) -#else -# define SUPPRESS_UBSAN -#endif - -#endif /* MY_COMPILER_INCLUDED */ |