Emilio Cobos Álvarez
dbc850b10f
Autogenerated with:
cp dom/.clang-format mfbt/ && mach format mfbt/**.{cpp,h,mm}
No manual changes required.
Differential Revision: https://phabricator.services.mozilla.com/D311691
48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* Functionality related to memory alignment. */
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#ifndef mozilla_Alignment_h
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#define mozilla_Alignment_h
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#include <cstddef>
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#include <cstdint>
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#include "mozilla/Attributes.h"
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namespace mozilla {
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/*
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* AlignedElem<N> is a structure whose alignment is guaranteed to be at least N
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* bytes.
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*/
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template <size_t Align>
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struct alignas(Align) AlignedElem {};
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template <typename T>
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struct MOZ_INHERIT_TYPE_ANNOTATIONS_FROM_TEMPLATE_ARGS AlignedStorage2 {
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union {
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unsigned char mBytes[sizeof(T)];
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uint64_t mDummy;
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};
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const T* addr() const { return reinterpret_cast<const T*>(mBytes); }
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T* addr() { return static_cast<T*>(static_cast<void*>(mBytes)); }
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const void* bytes() const { return static_cast<const void*>(mBytes); }
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void* bytes() { return static_cast<void*>(mBytes); }
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AlignedStorage2() = default;
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// AlignedStorage2 is non-copyable: the default copy constructor violates
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// strict aliasing rules, per bug 1269319.
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AlignedStorage2(const AlignedStorage2&) = delete;
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void operator=(const AlignedStorage2&) = delete;
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};
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} /* namespace mozilla */
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#endif /* mozilla_Alignment_h */
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