/*
- * Copyright 2016 Facebook, Inc.
+ * Copyright 2017 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* limitations under the License.
*/
-#ifndef FOLLY_PORTABILITY_H_
-#define FOLLY_PORTABILITY_H_
+#pragma once
#include <string.h>
#include <folly/CPortability.h>
-#ifdef __APPLE__
-# include <malloc/malloc.h>
-#endif
-
-#if FOLLY_HAVE_SCHED_H
- #include <sched.h>
-#endif
-
// Unaligned loads and stores
namespace folly {
#if FOLLY_HAVE_UNALIGNED_ACCESS
# define FOLLY_DEPRECATED(msg)
#endif
-// noinline
-#ifdef _MSC_VER
-# define FOLLY_NOINLINE __declspec(noinline)
+// warn unused result
+#if defined(_MSC_VER) && (_MSC_VER >= 1700)
+#define FOLLY_WARN_UNUSED_RESULT _Check_return_
#elif defined(__clang__) || defined(__GNUC__)
-# define FOLLY_NOINLINE __attribute__((__noinline__))
+#define FOLLY_WARN_UNUSED_RESULT __attribute__((__warn_unused_result__))
#else
-# define FOLLY_NOINLINE
+#define FOLLY_WARN_UNUSED_RESULT
#endif
-// always inline
+// target
#ifdef _MSC_VER
-# define FOLLY_ALWAYS_INLINE __forceinline
-#elif defined(__clang__) || defined(__GNUC__)
-# define FOLLY_ALWAYS_INLINE inline __attribute__((__always_inline__))
+# define FOLLY_TARGET_ATTRIBUTE(target)
#else
-# define FOLLY_ALWAYS_INLINE inline
+# define FOLLY_TARGET_ATTRIBUTE(target) __attribute__((__target__(target)))
#endif
// detection for 64 bit
# define FOLLY_PPC64 0
#endif
+namespace folly {
+constexpr bool kIsArchAmd64 = FOLLY_X64 == 1;
+constexpr bool kIsArchAArch64 = FOLLY_A64 == 1;
+constexpr bool kIsArchPPC64 = FOLLY_PPC64 == 1;
+}
+
+namespace folly {
+
+#if FOLLY_SANITIZE_ADDRESS
+constexpr bool kIsSanitizeAddress = true;
+#else
+constexpr bool kIsSanitizeAddress = false;
+#endif
+
+#if FOLLY_SANITIZE_THREAD
+constexpr bool kIsSanitizeThread = true;
+#else
+constexpr bool kIsSanitizeThread = false;
+#endif
+}
+
// packing is very ugly in msvc
#ifdef _MSC_VER
# define FOLLY_PACK_ATTR /**/
#elif defined(__clang__) || defined(__GNUC__)
# define FOLLY_PUSH_WARNING _Pragma("GCC diagnostic push")
# define FOLLY_POP_WARNING _Pragma("GCC diagnostic pop")
-#define FOLLY_GCC_DISABLE_WARNING_INTERNAL3(warningName) #warningName
-#define FOLLY_GCC_DISABLE_WARNING_INTERNAL2(warningName) \
- FOLLY_GCC_DISABLE_WARNING_INTERNAL3(warningName)
-#define FOLLY_GCC_DISABLE_WARNING(warningName) \
- _Pragma(FOLLY_GCC_DISABLE_WARNING_INTERNAL2(GCC diagnostic ignored \
- FOLLY_GCC_DISABLE_WARNING_INTERNAL3(-W##warningName)))
+# define FOLLY_GCC_DISABLE_WARNING_INTERNAL2(warningName) #warningName
+# define FOLLY_GCC_DISABLE_WARNING(warningName) \
+ _Pragma( \
+ FOLLY_GCC_DISABLE_WARNING_INTERNAL2(GCC diagnostic ignored warningName))
// Disable the MSVC warnings.
# define FOLLY_MSVC_DISABLE_WARNING(warningNumber)
#else
# define FOLLY_MSVC_DISABLE_WARNING(warningNumber)
#endif
-// portable version check
-#ifndef __GNUC_PREREQ
-# if defined __GNUC__ && defined __GNUC_MINOR__
-/* nolint */
-# define __GNUC_PREREQ(maj, min) ((__GNUC__ << 16) + __GNUC_MINOR__ >= \
- ((maj) << 16) + (min))
-# else
-/* nolint */
-# define __GNUC_PREREQ(maj, min) 0
-# endif
+#ifdef HAVE_SHADOW_LOCAL_WARNINGS
+#define FOLLY_GCC_DISABLE_NEW_SHADOW_WARNINGS \
+ FOLLY_GCC_DISABLE_WARNING("-Wshadow-compatible-local") \
+ FOLLY_GCC_DISABLE_WARNING("-Wshadow-local")
+#else
+#define FOLLY_GCC_DISABLE_NEW_SHADOW_WARNINGS /* empty */
#endif
#if defined(__GNUC__) && !defined(__APPLE__) && !__GNUC_PREREQ(4,9)
#undef FOLLY_TLS
#endif
-// Define to 1 if you have the `preadv' and `pwritev' functions, respectively
-#if !defined(FOLLY_HAVE_PREADV) && !defined(FOLLY_HAVE_PWRITEV)
-# if defined(__GLIBC_PREREQ)
-# if __GLIBC_PREREQ(2, 10)
-# define FOLLY_HAVE_PREADV 1
-# define FOLLY_HAVE_PWRITEV 1
-# endif
-# endif
-#endif
-
// It turns out that GNU libstdc++ and LLVM libc++ differ on how they implement
// the 'std' namespace; the latter uses inline namespaces. Wrap this decision
// up in a macro to make forward-declarations easier.
// If the new c++ ABI is used, __cxx11 inline namespace needs to be added to
// some types, e.g. std::list.
#if _GLIBCXX_USE_CXX11_ABI
-# define FOLLY_GLIBCXX_NAMESPACE_CXX11_BEGIN _GLIBCXX_BEGIN_NAMESPACE_CXX11
+#define FOLLY_GLIBCXX_NAMESPACE_CXX11_BEGIN \
+ inline _GLIBCXX_BEGIN_NAMESPACE_CXX11
# define FOLLY_GLIBCXX_NAMESPACE_CXX11_END _GLIBCXX_END_NAMESPACE_CXX11
#else
# define FOLLY_GLIBCXX_NAMESPACE_CXX11_BEGIN
# define FOLLY_GLIBCXX_NAMESPACE_CXX11_END
#endif
-// Provide our own std::__throw_* wrappers for platforms that don't have them
-#if FOLLY_HAVE_BITS_FUNCTEXCEPT_H
-#include <bits/functexcept.h>
-#else
-#include <folly/detail/FunctionalExcept.h>
-#endif
-
-#if defined(__cplusplus)
-// Unfortunately, boost::has_trivial_copy<T> is broken in libc++ due to its
-// usage of __has_trivial_copy(), so we can't use it as a
-// least-common-denominator for C++11 implementations that don't support
-// std::is_trivially_copyable<T>.
-//
-// http://stackoverflow.com/questions/12754886/has-trivial-copy-behaves-differently-in-clang-and-gcc-whos-right
-//
-// As a result, use std::is_trivially_copyable() where it exists, and fall back
-// to Boost otherwise.
-#if FOLLY_HAVE_STD__IS_TRIVIALLY_COPYABLE
-#include <type_traits>
-#define FOLLY_IS_TRIVIALLY_COPYABLE(T) \
- (std::is_trivially_copyable<T>::value)
-#else
-#include <boost/type_traits.hpp>
-#define FOLLY_IS_TRIVIALLY_COPYABLE(T) \
- (boost::has_trivial_copy<T>::value && \
- boost::has_trivial_destructor<T>::value)
-#endif
-#endif // __cplusplus
-
// MSVC specific defines
// mainly for posix compat
#ifdef _MSC_VER
#include <folly/portability/SysTypes.h>
-// sprintf semantics are not exactly identical
-// but current usage is not a problem
-# define snprintf _snprintf
-
-// semantics here are identical
-# define strerror_r(errno,buf,len) strerror_s(buf,len,errno)
-
// compiler specific to compiler specific
// nolint
# define __PRETTY_FUNCTION__ __FUNCSIG__
#include <TargetConditionals.h>
#endif
-// MacOS doesn't have malloc_usable_size()
-#if defined(__APPLE__) && !defined(FOLLY_HAVE_MALLOC_USABLE_SIZE)
-inline size_t malloc_usable_size(void* ptr) {
- return malloc_size(ptr);
-}
-#endif
-
// RTTI may not be enabled for this compilation unit.
#if defined(__GXX_RTTI) || defined(__cpp_rtti) || \
(defined(_MSC_VER) && defined(_CPPRTTI))
#define FOLLY_STATIC_CTOR_PRIORITY_MAX __attribute__((__init_priority__(102)))
#endif
-#endif // FOLLY_PORTABILITY_H_
+namespace folly {
+
+#if __OBJC__
+constexpr auto kIsObjC = true;
+#else
+constexpr auto kIsObjC = false;
+#endif
+
+#if defined(__linux__) && !FOLLY_MOBILE
+constexpr auto kIsLinux = true;
+#else
+constexpr auto kIsLinux = false;
+#endif
+
+#if defined(_WIN32)
+constexpr auto kIsWindows = true;
+#else
+constexpr auto kIsWindows = false;
+#endif
+}
projects / folly.git / blobdiff