X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;ds=sidebyside;f=folly%2FPortability.h;h=1498db30bfca9f4b6512f090491e4360eadad9e2;hb=17c08956e0c46684e3a3a9d3b5e9bc733a09c0ea;hp=7b822cda2d60da1fe3849b32f4d7de09554d7ea8;hpb=713e429835eb97113f52baa77f59a7787338c32a;p=folly.git diff --git a/folly/Portability.h b/folly/Portability.h index 7b822cda..1498db30 100644 --- a/folly/Portability.h +++ b/folly/Portability.h @@ -1,5 +1,5 @@ /* - * Copyright 2017 Facebook, Inc. + * Copyright 2017-present Facebook, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -16,8 +16,6 @@ #pragma once -#include - #include #include @@ -31,7 +29,7 @@ constexpr bool kHasUnalignedAccess = true; #else constexpr bool kHasUnalignedAccess = false; #endif -} +} // namespace folly // compiler specific attribute translation // msvc should come first, so if clang is in msvc mode it gets the right defines @@ -43,7 +41,6 @@ constexpr bool kHasUnalignedAccess = false; #else # error Cannot define FOLLY_ALIGNED on this platform #endif -#define FOLLY_ALIGNED_MAX FOLLY_ALIGNED(alignof(std::max_align_t)) // NOTE: this will only do checking in msvc with versions that support /analyze #if _MSC_VER @@ -52,7 +49,7 @@ constexpr bool kHasUnalignedAccess = false; # endif /* nolint */ # define _USE_ATTRIBUTES_FOR_SAL 1 -# include +# include // @manual # define FOLLY_PRINTF_FORMAT _Printf_format_string_ # define FOLLY_PRINTF_FORMAT_ATTR(format_param, dots_param) /**/ #else @@ -101,9 +98,9 @@ constexpr bool kHasUnalignedAccess = false; #endif #if defined(__aarch64__) -# define FOLLY_A64 1 +# define FOLLY_AARCH64 1 #else -# define FOLLY_A64 0 +# define FOLLY_AARCH64 0 #endif #if defined (__powerpc64__) @@ -114,9 +111,9 @@ constexpr bool kHasUnalignedAccess = false; namespace folly { constexpr bool kIsArchAmd64 = FOLLY_X64 == 1; -constexpr bool kIsArchAArch64 = FOLLY_A64 == 1; +constexpr bool kIsArchAArch64 = FOLLY_AARCH64 == 1; constexpr bool kIsArchPPC64 = FOLLY_PPC64 == 1; -} +} // namespace folly namespace folly { @@ -131,7 +128,13 @@ constexpr bool kIsSanitizeThread = true; #else constexpr bool kIsSanitizeThread = false; #endif -} + +#if FOLLY_SANITIZE +constexpr bool kIsSanitize = true; +#else +constexpr bool kIsSanitize = false; +#endif +} // namespace folly // packing is very ugly in msvc #ifdef _MSC_VER @@ -171,7 +174,7 @@ constexpr bool kIsSanitizeThread = false; # define FOLLY_MSVC_DISABLE_WARNING(warningNumber) #endif -#ifdef HAVE_SHADOW_LOCAL_WARNINGS +#ifdef FOLLY_HAVE_SHADOW_LOCAL_WARNINGS #define FOLLY_GCC_DISABLE_NEW_SHADOW_WARNINGS \ FOLLY_GCC_DISABLE_WARNING("-Wshadow-compatible-local") \ FOLLY_GCC_DISABLE_WARNING("-Wshadow-local") @@ -179,25 +182,6 @@ constexpr bool kIsSanitizeThread = false; #define FOLLY_GCC_DISABLE_NEW_SHADOW_WARNINGS /* empty */ #endif -#if defined(__GNUC__) && !defined(__APPLE__) && !__GNUC_PREREQ(4,9) -// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56019 -// gcc 4.8.x incorrectly placed max_align_t in the root namespace -// Alias it into std (where it's found in 4.9 and later) -namespace std { typedef ::max_align_t max_align_t; } -#endif - -// portable version check for clang -#ifndef __CLANG_PREREQ -# if defined __clang__ && defined __clang_major__ && defined __clang_minor__ -/* nolint */ -# define __CLANG_PREREQ(maj, min) \ - ((__clang_major__ << 16) + __clang_minor__ >= ((maj) << 16) + (min)) -# else -/* nolint */ -# define __CLANG_PREREQ(maj, min) 0 -# endif -#endif - /* Platform specific TLS support * gcc implements __thread * msvc implements __declspec(thread) @@ -220,7 +204,7 @@ namespace std { typedef ::max_align_t max_align_t; } // the 'std' namespace; the latter uses inline namespaces. Wrap this decision // up in a macro to make forward-declarations easier. #if FOLLY_USE_LIBCPP -#include <__config> +#include <__config> // @manual #define FOLLY_NAMESPACE_STD_BEGIN _LIBCPP_BEGIN_NAMESPACE_STD #define FOLLY_NAMESPACE_STD_END _LIBCPP_END_NAMESPACE_STD #else @@ -264,7 +248,7 @@ constexpr auto kIsDebug = false; #else constexpr auto kIsDebug = true; #endif -} +} // namespace folly // Endianness namespace folly { @@ -279,7 +263,7 @@ constexpr auto kIsLittleEndian = true; constexpr auto kIsLittleEndian = __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__; #endif constexpr auto kIsBigEndian = !kIsLittleEndian; -} +} // namespace folly #ifndef FOLLY_SSE # if defined(__SSE4_2__) @@ -313,12 +297,12 @@ constexpr auto kIsBigEndian = !kIsLittleEndian; namespace FOLLY_GFLAGS_NAMESPACE { } namespace gflags { using namespace FOLLY_GFLAGS_NAMESPACE; -} // namespace gflags +} // namespace gflags #endif // for TARGET_OS_IPHONE #ifdef __APPLE__ -#include +#include // @manual #endif // RTTI may not be enabled for this compilation unit. @@ -344,6 +328,12 @@ constexpr auto kIsObjC = true; constexpr auto kIsObjC = false; #endif +#if FOLLY_MOBILE +constexpr auto kIsMobile = true; +#else +constexpr auto kIsMobile = false; +#endif + #if defined(__linux__) && !FOLLY_MOBILE constexpr auto kIsLinux = true; #else @@ -352,7 +342,36 @@ constexpr auto kIsLinux = false; #if defined(_WIN32) constexpr auto kIsWindows = true; +constexpr auto kMscVer = _MSC_VER; #else constexpr auto kIsWindows = false; +constexpr auto kMscVer = 0; +#endif +} // namespace folly + +// Define FOLLY_USE_CPP14_CONSTEXPR to be true if the compiler's C++14 +// constexpr support is "good enough". +#ifndef FOLLY_USE_CPP14_CONSTEXPR +#if defined(__clang__) +#define FOLLY_USE_CPP14_CONSTEXPR __cplusplus >= 201300L +#elif defined(__GNUC__) +#define FOLLY_USE_CPP14_CONSTEXPR __cplusplus >= 201304L +#else +#define FOLLY_USE_CPP14_CONSTEXPR 0 // MSVC? +#endif +#endif + +#if FOLLY_USE_CPP14_CONSTEXPR +#define FOLLY_CPP14_CONSTEXPR constexpr +#else +#define FOLLY_CPP14_CONSTEXPR inline +#endif + +#if __cpp_coroutines >= 201703L || (_MSC_VER && _RESUMABLE_FUNCTIONS_SUPPORTED) +#define FOLLY_HAS_COROUTINES 1 +#endif + +// MSVC 2017.5 +#if __cpp_noexcept_function_type >= 201510 || _MSC_FULL_VER >= 191225816 +#define FOLLY_HAVE_NOEXCEPT_FUNCTION_TYPE 1 #endif -}