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authororivej <orivej@yandex-team.ru>2022-02-10 16:45:01 +0300
committerDaniil Cherednik <dcherednik@yandex-team.ru>2022-02-10 16:45:01 +0300
commit2d37894b1b037cf24231090eda8589bbb44fb6fc (patch)
treebe835aa92c6248212e705f25388ebafcf84bc7a1 /contrib/libs/poco/Foundation/include/Poco/Alignment.h
parent718c552901d703c502ccbefdfc3c9028d608b947 (diff)
downloadydb-2d37894b1b037cf24231090eda8589bbb44fb6fc.tar.gz
Restoring authorship annotation for <orivej@yandex-team.ru>. Commit 2 of 2.
Diffstat (limited to 'contrib/libs/poco/Foundation/include/Poco/Alignment.h')
-rw-r--r--contrib/libs/poco/Foundation/include/Poco/Alignment.h492
1 files changed, 246 insertions, 246 deletions
diff --git a/contrib/libs/poco/Foundation/include/Poco/Alignment.h b/contrib/libs/poco/Foundation/include/Poco/Alignment.h
index 314a8e3f08..d655a3d9f4 100644
--- a/contrib/libs/poco/Foundation/include/Poco/Alignment.h
+++ b/contrib/libs/poco/Foundation/include/Poco/Alignment.h
@@ -1,246 +1,246 @@
-//
-// Alignment.h
-//
-// Library: Foundation
-// Package: Dynamic
-// Module: Alignment
-//
-// Definition of the Alignment class.
-//
-// Copyright (c) 2007, Applied Informatics Software Engineering GmbH.
-// and Contributors.
-//
-// SPDX-License-Identifier: BSL-1.0
-//
-
-
-// Adapted for POCO from LLVM Compiler Infrastructure code:
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source License
-//
-//===----------------------------------------------------------------------===//
-//
-// This file defines the AlignOf function that computes alignments for
-// arbitrary types.
-//
-//===----------------------------------------------------------------------===//
-
-
-#ifndef Foundation_AlignOf_INCLUDED
-#define Foundation_AlignOf_INCLUDED
-
-
-#include <cstddef>
-
-
-#ifdef POCO_ENABLE_CPP11
-
-
- #include <type_traits>
- #define POCO_HAVE_ALIGNMENT
-
-
-#else
-
-
- namespace Poco {
-
-
- template <typename T>
- struct AlignmentCalcImpl
- {
- char x;
- T t;
- private:
- AlignmentCalcImpl() {} // Never instantiate.
- };
-
-
- template <typename T>
- struct AlignOf
- /// A templated class that contains an enum value representing
- /// the alignment of the template argument. For example,
- /// AlignOf<int>::Alignment represents the alignment of type "int". The
- /// alignment calculated is the minimum alignment, and not necessarily
- /// the "desired" alignment returned by GCC's __alignof__ (for example). Note
- /// that because the alignment is an enum value, it can be used as a
- /// compile-time constant (e.g., for template instantiation).
- {
- enum
- {
- Alignment = static_cast<unsigned int>(sizeof(AlignmentCalcImpl<T>) - sizeof(T))
- };
-
- enum { Alignment_GreaterEqual_2Bytes = Alignment >= 2 ? 1 : 0 };
- enum { Alignment_GreaterEqual_4Bytes = Alignment >= 4 ? 1 : 0 };
- enum { Alignment_GreaterEqual_8Bytes = Alignment >= 8 ? 1 : 0 };
- enum { Alignment_GreaterEqual_16Bytes = Alignment >= 16 ? 1 : 0 };
-
- enum { Alignment_LessEqual_2Bytes = Alignment <= 2 ? 1 : 0 };
- enum { Alignment_LessEqual_4Bytes = Alignment <= 4 ? 1 : 0 };
- enum { Alignment_LessEqual_8Bytes = Alignment <= 8 ? 1 : 0 };
- enum { Alignment_LessEqual_16Bytes = Alignment <= 16 ? 1 : 0 };
-
- };
-
-
- template <typename T>
- inline unsigned alignOf()
- /// A templated function that returns the minimum alignment of
- /// of a type. This provides no extra functionality beyond the AlignOf
- /// class besides some cosmetic cleanliness. Example usage:
- /// alignOf<int>() returns the alignment of an int.
- {
- return AlignOf<T>::Alignment;
- }
-
-
- template <std::size_t Alignment> struct AlignedCharArrayImpl;
- /// Helper for building an aligned character array type.
- ///
- /// This template is used to explicitly build up a collection of aligned
- /// character types. We have to build these up using a macro and explicit
- /// specialization to cope with old versions of MSVC and GCC where only an
- /// integer literal can be used to specify an alignment constraint. Once built
- /// up here, we can then begin to indirect between these using normal C++
- /// template parameters.
-
-
- // MSVC requires special handling here.
- #ifndef _MSC_VER
-
- #ifdef POCO_COMPILER_CLANG
-
- #if __has_feature(cxx_alignas)
- #define POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(x) \
- template <> struct AlignedCharArrayImpl<x> \
- { \
- char aligned alignas(x); \
- }
- #define POCO_HAVE_ALIGNMENT
- #endif
-
- #elif defined(__GNUC__) || defined(__IBM_ATTRIBUTES)
-
- #define POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(x) \
- template <> struct AlignedCharArrayImpl<x> \
- { \
- char aligned __attribute__((aligned(x))); \
- }
- #define POCO_HAVE_ALIGNMENT
-
- #endif
-
- #ifdef POCO_HAVE_ALIGNMENT
- POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(1);
- POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(2);
- POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(4);
- POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(8);
- POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(16);
- POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(32);
- POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(64);
- POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(128);
- POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(512);
- POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(1024);
- POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(2048);
- POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(4096);
- POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(8192);
-
- #undef POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT
- #endif // POCO_HAVE_ALIGNMENT
-
- #else // _MSC_VER
-
- // We provide special variations of this template for the most common
- // alignments because __declspec(align(...)) doesn't actually work when it is
- // a member of a by-value function argument in MSVC, even if the alignment
- // request is something reasonably like 8-byte or 16-byte.
- template <> struct AlignedCharArrayImpl<1> { char aligned; };
- template <> struct AlignedCharArrayImpl<2> { short aligned; };
- template <> struct AlignedCharArrayImpl<4> { int aligned; };
- template <> struct AlignedCharArrayImpl<8> { double aligned; };
-
- #define POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(x) \
- template <> struct AlignedCharArrayImpl<x> { \
- __declspec(align(x)) char aligned; \
- }
-
- POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(16);
- POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(32);
- POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(64);
- POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(128);
-
- #if (_MSC_VER > 1600) // MSVC 2010 complains on alignment larger than 128
- POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(512);
- POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(1024);
- POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(2048);
- POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(4096);
- POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(8192);
- #endif // _MSC_VER > 1600
-
- // Any larger and MSVC complains.
- #undef POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT
-
- #define POCO_HAVE_ALIGNMENT
- #endif // _MSC_VER
-
- // POCO_HAVE_ALIGNMENT will be defined on the pre-C++11 platforms/compilers where
- // it can be reliably determined and used. Uncomment the line below to explicitly
- // disable use of alignment even for those platforms.
- // #undef POCO_HAVE_ALIGNMENT
-
-
- #ifdef POCO_HAVE_ALIGNMENT
-
- template <typename T1, typename T2 = char, typename T3 = char, typename T4 = char>
- union AlignedCharArrayUnion
- /// This union template exposes a suitably aligned and sized character
- /// array member which can hold elements of any of up to four types.
- ///
- /// These types may be arrays, structs, or any other types. The goal is to
- /// produce a union type containing a character array which, when used, forms
- /// storage suitable to placement new any of these types over. Support for more
- /// than four types can be added at the cost of more boiler plate.
- {
- private:
- class AlignerImpl
- {
- T1 t1;
- T2 t2;
- T3 t3;
- T4 t4;
-
- AlignerImpl(); // Never defined or instantiated.
- };
-
- union SizerImpl
- {
- char arr1[sizeof(T1)];
- char arr2[sizeof(T2)];
- char arr3[sizeof(T3)];
- char arr4[sizeof(T4)];
- };
-
- public:
- char buffer[sizeof(SizerImpl)];
- /// The character array buffer for use by clients.
- ///
- /// No other member of this union should be referenced. They exist purely to
- /// constrain the layout of this character array.
-
- private:
- Poco::AlignedCharArrayImpl<AlignOf<AlignerImpl>::Alignment> _nonceMember;
-
- };
-
- #endif // POCO_HAVE_ALIGNMENT
-
- } // namespace Poco
-
-
-#endif // POCO_ENABLE_CPP11
-
-
-#endif // Foundation_AlignOf_INCLUDED
+//
+// Alignment.h
+//
+// Library: Foundation
+// Package: Dynamic
+// Module: Alignment
+//
+// Definition of the Alignment class.
+//
+// Copyright (c) 2007, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier: BSL-1.0
+//
+
+
+// Adapted for POCO from LLVM Compiler Infrastructure code:
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source License
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the AlignOf function that computes alignments for
+// arbitrary types.
+//
+//===----------------------------------------------------------------------===//
+
+
+#ifndef Foundation_AlignOf_INCLUDED
+#define Foundation_AlignOf_INCLUDED
+
+
+#include <cstddef>
+
+
+#ifdef POCO_ENABLE_CPP11
+
+
+ #include <type_traits>
+ #define POCO_HAVE_ALIGNMENT
+
+
+#else
+
+
+ namespace Poco {
+
+
+ template <typename T>
+ struct AlignmentCalcImpl
+ {
+ char x;
+ T t;
+ private:
+ AlignmentCalcImpl() {} // Never instantiate.
+ };
+
+
+ template <typename T>
+ struct AlignOf
+ /// A templated class that contains an enum value representing
+ /// the alignment of the template argument. For example,
+ /// AlignOf<int>::Alignment represents the alignment of type "int". The
+ /// alignment calculated is the minimum alignment, and not necessarily
+ /// the "desired" alignment returned by GCC's __alignof__ (for example). Note
+ /// that because the alignment is an enum value, it can be used as a
+ /// compile-time constant (e.g., for template instantiation).
+ {
+ enum
+ {
+ Alignment = static_cast<unsigned int>(sizeof(AlignmentCalcImpl<T>) - sizeof(T))
+ };
+
+ enum { Alignment_GreaterEqual_2Bytes = Alignment >= 2 ? 1 : 0 };
+ enum { Alignment_GreaterEqual_4Bytes = Alignment >= 4 ? 1 : 0 };
+ enum { Alignment_GreaterEqual_8Bytes = Alignment >= 8 ? 1 : 0 };
+ enum { Alignment_GreaterEqual_16Bytes = Alignment >= 16 ? 1 : 0 };
+
+ enum { Alignment_LessEqual_2Bytes = Alignment <= 2 ? 1 : 0 };
+ enum { Alignment_LessEqual_4Bytes = Alignment <= 4 ? 1 : 0 };
+ enum { Alignment_LessEqual_8Bytes = Alignment <= 8 ? 1 : 0 };
+ enum { Alignment_LessEqual_16Bytes = Alignment <= 16 ? 1 : 0 };
+
+ };
+
+
+ template <typename T>
+ inline unsigned alignOf()
+ /// A templated function that returns the minimum alignment of
+ /// of a type. This provides no extra functionality beyond the AlignOf
+ /// class besides some cosmetic cleanliness. Example usage:
+ /// alignOf<int>() returns the alignment of an int.
+ {
+ return AlignOf<T>::Alignment;
+ }
+
+
+ template <std::size_t Alignment> struct AlignedCharArrayImpl;
+ /// Helper for building an aligned character array type.
+ ///
+ /// This template is used to explicitly build up a collection of aligned
+ /// character types. We have to build these up using a macro and explicit
+ /// specialization to cope with old versions of MSVC and GCC where only an
+ /// integer literal can be used to specify an alignment constraint. Once built
+ /// up here, we can then begin to indirect between these using normal C++
+ /// template parameters.
+
+
+ // MSVC requires special handling here.
+ #ifndef _MSC_VER
+
+ #ifdef POCO_COMPILER_CLANG
+
+ #if __has_feature(cxx_alignas)
+ #define POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(x) \
+ template <> struct AlignedCharArrayImpl<x> \
+ { \
+ char aligned alignas(x); \
+ }
+ #define POCO_HAVE_ALIGNMENT
+ #endif
+
+ #elif defined(__GNUC__) || defined(__IBM_ATTRIBUTES)
+
+ #define POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(x) \
+ template <> struct AlignedCharArrayImpl<x> \
+ { \
+ char aligned __attribute__((aligned(x))); \
+ }
+ #define POCO_HAVE_ALIGNMENT
+
+ #endif
+
+ #ifdef POCO_HAVE_ALIGNMENT
+ POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(1);
+ POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(2);
+ POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(4);
+ POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(8);
+ POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(16);
+ POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(32);
+ POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(64);
+ POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(128);
+ POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(512);
+ POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(1024);
+ POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(2048);
+ POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(4096);
+ POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(8192);
+
+ #undef POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT
+ #endif // POCO_HAVE_ALIGNMENT
+
+ #else // _MSC_VER
+
+ // We provide special variations of this template for the most common
+ // alignments because __declspec(align(...)) doesn't actually work when it is
+ // a member of a by-value function argument in MSVC, even if the alignment
+ // request is something reasonably like 8-byte or 16-byte.
+ template <> struct AlignedCharArrayImpl<1> { char aligned; };
+ template <> struct AlignedCharArrayImpl<2> { short aligned; };
+ template <> struct AlignedCharArrayImpl<4> { int aligned; };
+ template <> struct AlignedCharArrayImpl<8> { double aligned; };
+
+ #define POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(x) \
+ template <> struct AlignedCharArrayImpl<x> { \
+ __declspec(align(x)) char aligned; \
+ }
+
+ POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(16);
+ POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(32);
+ POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(64);
+ POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(128);
+
+ #if (_MSC_VER > 1600) // MSVC 2010 complains on alignment larger than 128
+ POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(512);
+ POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(1024);
+ POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(2048);
+ POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(4096);
+ POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT(8192);
+ #endif // _MSC_VER > 1600
+
+ // Any larger and MSVC complains.
+ #undef POCO_ALIGNEDCHARARRAY_TEMPLATE_ALIGNMENT
+
+ #define POCO_HAVE_ALIGNMENT
+ #endif // _MSC_VER
+
+ // POCO_HAVE_ALIGNMENT will be defined on the pre-C++11 platforms/compilers where
+ // it can be reliably determined and used. Uncomment the line below to explicitly
+ // disable use of alignment even for those platforms.
+ // #undef POCO_HAVE_ALIGNMENT
+
+
+ #ifdef POCO_HAVE_ALIGNMENT
+
+ template <typename T1, typename T2 = char, typename T3 = char, typename T4 = char>
+ union AlignedCharArrayUnion
+ /// This union template exposes a suitably aligned and sized character
+ /// array member which can hold elements of any of up to four types.
+ ///
+ /// These types may be arrays, structs, or any other types. The goal is to
+ /// produce a union type containing a character array which, when used, forms
+ /// storage suitable to placement new any of these types over. Support for more
+ /// than four types can be added at the cost of more boiler plate.
+ {
+ private:
+ class AlignerImpl
+ {
+ T1 t1;
+ T2 t2;
+ T3 t3;
+ T4 t4;
+
+ AlignerImpl(); // Never defined or instantiated.
+ };
+
+ union SizerImpl
+ {
+ char arr1[sizeof(T1)];
+ char arr2[sizeof(T2)];
+ char arr3[sizeof(T3)];
+ char arr4[sizeof(T4)];
+ };
+
+ public:
+ char buffer[sizeof(SizerImpl)];
+ /// The character array buffer for use by clients.
+ ///
+ /// No other member of this union should be referenced. They exist purely to
+ /// constrain the layout of this character array.
+
+ private:
+ Poco::AlignedCharArrayImpl<AlignOf<AlignerImpl>::Alignment> _nonceMember;
+
+ };
+
+ #endif // POCO_HAVE_ALIGNMENT
+
+ } // namespace Poco
+
+
+#endif // POCO_ENABLE_CPP11
+
+
+#endif // Foundation_AlignOf_INCLUDED