mirror of
https://github.com/ecency/ecency-mobile.git
synced 2024-12-18 02:41:39 +03:00
343 lines
9.4 KiB
C++
343 lines
9.4 KiB
C++
/*
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* Copyright 2016 Facebook, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <string.h>
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#include <cstddef>
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#include <folly/portability/Config.h>
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#include <folly/CPortability.h>
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#if FOLLY_HAVE_SCHED_H
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#include <sched.h>
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#endif
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// Unaligned loads and stores
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namespace folly {
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#if FOLLY_HAVE_UNALIGNED_ACCESS
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constexpr bool kHasUnalignedAccess = true;
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#else
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constexpr bool kHasUnalignedAccess = false;
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#endif
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}
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// compiler specific attribute translation
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// msvc should come first, so if clang is in msvc mode it gets the right defines
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#if defined(__clang__) || defined(__GNUC__)
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# define FOLLY_ALIGNED(size) __attribute__((__aligned__(size)))
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#elif defined(_MSC_VER)
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# define FOLLY_ALIGNED(size) __declspec(align(size))
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#else
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# error Cannot define FOLLY_ALIGNED on this platform
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#endif
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#define FOLLY_ALIGNED_MAX FOLLY_ALIGNED(alignof(std::max_align_t))
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// NOTE: this will only do checking in msvc with versions that support /analyze
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#if _MSC_VER
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# ifdef _USE_ATTRIBUTES_FOR_SAL
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# undef _USE_ATTRIBUTES_FOR_SAL
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# endif
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/* nolint */
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# define _USE_ATTRIBUTES_FOR_SAL 1
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# include <sal.h>
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# define FOLLY_PRINTF_FORMAT _Printf_format_string_
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# define FOLLY_PRINTF_FORMAT_ATTR(format_param, dots_param) /**/
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#else
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# define FOLLY_PRINTF_FORMAT /**/
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# define FOLLY_PRINTF_FORMAT_ATTR(format_param, dots_param) \
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__attribute__((__format__(__printf__, format_param, dots_param)))
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#endif
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// deprecated
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#if defined(__clang__) || defined(__GNUC__)
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# define FOLLY_DEPRECATED(msg) __attribute__((__deprecated__(msg)))
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#elif defined(_MSC_VER)
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# define FOLLY_DEPRECATED(msg) __declspec(deprecated(msg))
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#else
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# define FOLLY_DEPRECATED(msg)
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#endif
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// noinline
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#ifdef _MSC_VER
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# define FOLLY_NOINLINE __declspec(noinline)
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#elif defined(__clang__) || defined(__GNUC__)
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# define FOLLY_NOINLINE __attribute__((__noinline__))
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#else
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# define FOLLY_NOINLINE
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#endif
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// always inline
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#ifdef _MSC_VER
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# define FOLLY_ALWAYS_INLINE __forceinline
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#elif defined(__clang__) || defined(__GNUC__)
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# define FOLLY_ALWAYS_INLINE inline __attribute__((__always_inline__))
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#else
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# define FOLLY_ALWAYS_INLINE inline
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#endif
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// warn unused result
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#if defined(_MSC_VER) && (_MSC_VER >= 1700)
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#define FOLLY_WARN_UNUSED_RESULT _Check_return_
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#elif defined(__clang__) || defined(__GNUC__)
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#define FOLLY_WARN_UNUSED_RESULT __attribute__((__warn_unused_result__))
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#else
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#define FOLLY_WARN_UNUSED_RESULT
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#endif
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// target
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#ifdef _MSC_VER
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# define FOLLY_TARGET_ATTRIBUTE(target)
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#else
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# define FOLLY_TARGET_ATTRIBUTE(target) __attribute__((__target__(target)))
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#endif
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// detection for 64 bit
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#if defined(__x86_64__) || defined(_M_X64)
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# define FOLLY_X64 1
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#else
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# define FOLLY_X64 0
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#endif
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#if defined(__aarch64__)
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# define FOLLY_A64 1
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#else
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# define FOLLY_A64 0
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#endif
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#if defined (__powerpc64__)
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# define FOLLY_PPC64 1
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#else
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# define FOLLY_PPC64 0
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#endif
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// packing is very ugly in msvc
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#ifdef _MSC_VER
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# define FOLLY_PACK_ATTR /**/
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# define FOLLY_PACK_PUSH __pragma(pack(push, 1))
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# define FOLLY_PACK_POP __pragma(pack(pop))
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#elif defined(__clang__) || defined(__GNUC__)
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# define FOLLY_PACK_ATTR __attribute__((__packed__))
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# define FOLLY_PACK_PUSH /**/
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# define FOLLY_PACK_POP /**/
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#else
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# define FOLLY_PACK_ATTR /**/
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# define FOLLY_PACK_PUSH /**/
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# define FOLLY_PACK_POP /**/
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#endif
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// Generalize warning push/pop.
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#if defined(_MSC_VER)
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# define FOLLY_PUSH_WARNING __pragma(warning(push))
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# define FOLLY_POP_WARNING __pragma(warning(pop))
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// Disable the GCC warnings.
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# define FOLLY_GCC_DISABLE_WARNING(warningName)
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# define FOLLY_MSVC_DISABLE_WARNING(warningNumber) __pragma(warning(disable: warningNumber))
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#elif defined(__clang__) || defined(__GNUC__)
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# define FOLLY_PUSH_WARNING _Pragma("GCC diagnostic push")
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# define FOLLY_POP_WARNING _Pragma("GCC diagnostic pop")
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#define FOLLY_GCC_DISABLE_WARNING_INTERNAL3(warningName) #warningName
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#define FOLLY_GCC_DISABLE_WARNING_INTERNAL2(warningName) \
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FOLLY_GCC_DISABLE_WARNING_INTERNAL3(warningName)
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#define FOLLY_GCC_DISABLE_WARNING(warningName) \
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_Pragma(FOLLY_GCC_DISABLE_WARNING_INTERNAL2(GCC diagnostic ignored \
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FOLLY_GCC_DISABLE_WARNING_INTERNAL3(-W##warningName)))
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// Disable the MSVC warnings.
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# define FOLLY_MSVC_DISABLE_WARNING(warningNumber)
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#else
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# define FOLLY_PUSH_WARNING
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# define FOLLY_POP_WARNING
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# define FOLLY_GCC_DISABLE_WARNING(warningName)
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# define FOLLY_MSVC_DISABLE_WARNING(warningNumber)
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#endif
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#ifdef HAVE_SHADOW_LOCAL_WARNINGS
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#define FOLLY_GCC_DISABLE_NEW_SHADOW_WARNINGS \
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FOLLY_GCC_DISABLE_WARNING(shadow-compatible-local) \
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FOLLY_GCC_DISABLE_WARNING(shadow-local)
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#else
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#define FOLLY_GCC_DISABLE_NEW_SHADOW_WARNINGS /* empty */
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#endif
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#if defined(__GNUC__) && !defined(__APPLE__) && !__GNUC_PREREQ(4,9)
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// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56019
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// gcc 4.8.x incorrectly placed max_align_t in the root namespace
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// Alias it into std (where it's found in 4.9 and later)
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namespace std { typedef ::max_align_t max_align_t; }
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#endif
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// portable version check for clang
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#ifndef __CLANG_PREREQ
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# if defined __clang__ && defined __clang_major__ && defined __clang_minor__
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/* nolint */
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# define __CLANG_PREREQ(maj, min) \
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((__clang_major__ << 16) + __clang_minor__ >= ((maj) << 16) + (min))
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# else
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/* nolint */
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# define __CLANG_PREREQ(maj, min) 0
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# endif
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#endif
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/* Platform specific TLS support
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* gcc implements __thread
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* msvc implements __declspec(thread)
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* the semantics are the same
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* (but remember __thread has different semantics when using emutls (ex. apple))
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*/
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#if defined(_MSC_VER)
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# define FOLLY_TLS __declspec(thread)
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#elif defined(__GNUC__) || defined(__clang__)
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# define FOLLY_TLS __thread
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#else
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# error cannot define platform specific thread local storage
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#endif
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#if FOLLY_MOBILE
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#undef FOLLY_TLS
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#endif
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// It turns out that GNU libstdc++ and LLVM libc++ differ on how they implement
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// the 'std' namespace; the latter uses inline namespaces. Wrap this decision
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// up in a macro to make forward-declarations easier.
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#if FOLLY_USE_LIBCPP
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#include <__config>
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#define FOLLY_NAMESPACE_STD_BEGIN _LIBCPP_BEGIN_NAMESPACE_STD
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#define FOLLY_NAMESPACE_STD_END _LIBCPP_END_NAMESPACE_STD
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#else
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#define FOLLY_NAMESPACE_STD_BEGIN namespace std {
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#define FOLLY_NAMESPACE_STD_END }
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#endif
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// If the new c++ ABI is used, __cxx11 inline namespace needs to be added to
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// some types, e.g. std::list.
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#if _GLIBCXX_USE_CXX11_ABI
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#define FOLLY_GLIBCXX_NAMESPACE_CXX11_BEGIN \
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inline _GLIBCXX_BEGIN_NAMESPACE_CXX11
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# define FOLLY_GLIBCXX_NAMESPACE_CXX11_END _GLIBCXX_END_NAMESPACE_CXX11
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#else
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# define FOLLY_GLIBCXX_NAMESPACE_CXX11_BEGIN
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# define FOLLY_GLIBCXX_NAMESPACE_CXX11_END
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#endif
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// MSVC specific defines
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// mainly for posix compat
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#ifdef _MSC_VER
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#include <folly/portability/SysTypes.h>
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// compiler specific to compiler specific
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// nolint
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# define __PRETTY_FUNCTION__ __FUNCSIG__
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// Hide a GCC specific thing that breaks MSVC if left alone.
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# define __extension__
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// We have compiler support for the newest of the new, but
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// MSVC doesn't tell us that.
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#define __SSE4_2__ 1
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#endif
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// Debug
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namespace folly {
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#ifdef NDEBUG
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constexpr auto kIsDebug = false;
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#else
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constexpr auto kIsDebug = true;
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#endif
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}
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// Endianness
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namespace folly {
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#ifdef _MSC_VER
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// It's MSVC, so we just have to guess ... and allow an override
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#ifdef FOLLY_ENDIAN_BE
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constexpr auto kIsLittleEndian = false;
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#else
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constexpr auto kIsLittleEndian = true;
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#endif
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#else
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constexpr auto kIsLittleEndian = __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__;
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#endif
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constexpr auto kIsBigEndian = !kIsLittleEndian;
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}
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#ifndef FOLLY_SSE
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# if defined(__SSE4_2__)
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# define FOLLY_SSE 4
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# define FOLLY_SSE_MINOR 2
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# elif defined(__SSE4_1__)
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# define FOLLY_SSE 4
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# define FOLLY_SSE_MINOR 1
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# elif defined(__SSE4__)
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# define FOLLY_SSE 4
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# define FOLLY_SSE_MINOR 0
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# elif defined(__SSE3__)
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# define FOLLY_SSE 3
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# define FOLLY_SSE_MINOR 0
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# elif defined(__SSE2__)
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# define FOLLY_SSE 2
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# define FOLLY_SSE_MINOR 0
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# elif defined(__SSE__)
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# define FOLLY_SSE 1
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# define FOLLY_SSE_MINOR 0
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# else
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# define FOLLY_SSE 0
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# define FOLLY_SSE_MINOR 0
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# endif
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#endif
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#define FOLLY_SSE_PREREQ(major, minor) \
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(FOLLY_SSE > major || FOLLY_SSE == major && FOLLY_SSE_MINOR >= minor)
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#if FOLLY_UNUSUAL_GFLAGS_NAMESPACE
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namespace FOLLY_GFLAGS_NAMESPACE { }
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namespace gflags {
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using namespace FOLLY_GFLAGS_NAMESPACE;
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} // namespace gflags
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#endif
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// for TARGET_OS_IPHONE
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#ifdef __APPLE__
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#include <TargetConditionals.h>
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#endif
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// RTTI may not be enabled for this compilation unit.
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#if defined(__GXX_RTTI) || defined(__cpp_rtti) || \
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(defined(_MSC_VER) && defined(_CPPRTTI))
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# define FOLLY_HAS_RTTI 1
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#endif
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#if defined(__APPLE__) || defined(_MSC_VER)
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#define FOLLY_STATIC_CTOR_PRIORITY_MAX
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#else
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// 101 is the highest priority allowed by the init_priority attribute.
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// This priority is already used by JEMalloc and other memory allocators so
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// we will take the next one.
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#define FOLLY_STATIC_CTOR_PRIORITY_MAX __attribute__((__init_priority__(102)))
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#endif
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namespace folly {
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#if defined(__linux__) && !FOLLY_MOBILE
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constexpr auto kIsLinux = true;
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#else
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constexpr auto kIsLinux = false;
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#endif
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}
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