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Diffstat (limited to 'security/sandbox/chromium/base/memory/aligned_memory.h')
| -rw-r--r-- | security/sandbox/chromium/base/memory/aligned_memory.h | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/security/sandbox/chromium/base/memory/aligned_memory.h b/security/sandbox/chromium/base/memory/aligned_memory.h deleted file mode 100644 index bb7bd872c..000000000 --- a/security/sandbox/chromium/base/memory/aligned_memory.h +++ /dev/null @@ -1,117 +0,0 @@ -// Copyright (c) 2012 The Chromium Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. - -// AlignedMemory is a POD type that gives you a portable way to specify static -// or local stack data of a given alignment and size. For example, if you need -// static storage for a class, but you want manual control over when the object -// is constructed and destructed (you don't want static initialization and -// destruction), use AlignedMemory: -// -// static AlignedMemory<sizeof(MyClass), ALIGNOF(MyClass)> my_class; -// -// // ... at runtime: -// new(my_class.void_data()) MyClass(); -// -// // ... use it: -// MyClass* mc = my_class.data_as<MyClass>(); -// -// // ... later, to destruct my_class: -// my_class.data_as<MyClass>()->MyClass::~MyClass(); -// -// Alternatively, a runtime sized aligned allocation can be created: -// -// float* my_array = static_cast<float*>(AlignedAlloc(size, alignment)); -// -// // ... later, to release the memory: -// AlignedFree(my_array); -// -// Or using scoped_ptr: -// -// scoped_ptr<float, AlignedFreeDeleter> my_array( -// static_cast<float*>(AlignedAlloc(size, alignment))); - -#ifndef BASE_MEMORY_ALIGNED_MEMORY_H_ -#define BASE_MEMORY_ALIGNED_MEMORY_H_ - -#include <stddef.h> -#include <stdint.h> - -#include "base/base_export.h" -#include "base/compiler_specific.h" - -#if defined(COMPILER_MSVC) -#include <malloc.h> -#else -#include <stdlib.h> -#endif - -namespace base { - -// AlignedMemory is specialized for all supported alignments. -// Make sure we get a compiler error if someone uses an unsupported alignment. -template <size_t Size, size_t ByteAlignment> -struct AlignedMemory {}; - -#define BASE_DECL_ALIGNED_MEMORY(byte_alignment) \ - template <size_t Size> \ - class AlignedMemory<Size, byte_alignment> { \ - public: \ - ALIGNAS(byte_alignment) uint8_t data_[Size]; \ - void* void_data() { return static_cast<void*>(data_); } \ - const void* void_data() const { return static_cast<const void*>(data_); } \ - template <typename Type> \ - Type* data_as() { \ - return static_cast<Type*>(void_data()); \ - } \ - template <typename Type> \ - const Type* data_as() const { \ - return static_cast<const Type*>(void_data()); \ - } \ - \ - private: \ - void* operator new(size_t); \ - void operator delete(void*); \ - } - -// Specialization for all alignments is required because MSVC (as of VS 2008) -// does not understand ALIGNAS(ALIGNOF(Type)) or ALIGNAS(template_param). -// Greater than 4096 alignment is not supported by some compilers, so 4096 is -// the maximum specified here. -BASE_DECL_ALIGNED_MEMORY(1); -BASE_DECL_ALIGNED_MEMORY(2); -BASE_DECL_ALIGNED_MEMORY(4); -BASE_DECL_ALIGNED_MEMORY(8); -BASE_DECL_ALIGNED_MEMORY(16); -BASE_DECL_ALIGNED_MEMORY(32); -BASE_DECL_ALIGNED_MEMORY(64); -BASE_DECL_ALIGNED_MEMORY(128); -BASE_DECL_ALIGNED_MEMORY(256); -BASE_DECL_ALIGNED_MEMORY(512); -BASE_DECL_ALIGNED_MEMORY(1024); -BASE_DECL_ALIGNED_MEMORY(2048); -BASE_DECL_ALIGNED_MEMORY(4096); - -#undef BASE_DECL_ALIGNED_MEMORY - -BASE_EXPORT void* AlignedAlloc(size_t size, size_t alignment); - -inline void AlignedFree(void* ptr) { -#if defined(COMPILER_MSVC) - _aligned_free(ptr); -#else - free(ptr); -#endif -} - -// Deleter for use with scoped_ptr. E.g., use as -// scoped_ptr<Foo, base::AlignedFreeDeleter> foo; -struct AlignedFreeDeleter { - inline void operator()(void* ptr) const { - AlignedFree(ptr); - } -}; - -} // namespace base - -#endif // BASE_MEMORY_ALIGNED_MEMORY_H_ |