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37 lines
1.1 KiB
37 lines
1.1 KiB
7 years ago
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/*
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* Copyright 2013 Google 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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// A convenient wrapper for buffers with alignment constraints
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// Note that if we were on C++11, we'd use aligned_storage or somesuch.
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#ifndef __ALIGNED_BUF_H
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#define __ALIGNED_BUF_H
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#include<stddef.h>
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template<typename T, size_t size, size_t alignment = 16>
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class AlignedBuf {
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public:
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T *get() {
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return (T *)((((intptr_t)storage_) + alignment - 1) & -alignment);
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}
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private:
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unsigned char storage_[size * sizeof(T) + alignment];
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};
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#endif // __ALIGNED_BUF_H
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