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37 lines
777 B
C++
37 lines
777 B
C++
#pragma once
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#include <cstdlib>
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#include <utility>
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#include <boost/noncopyable.hpp>
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namespace DB
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{
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/** Aligned piece of memory.
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* It can only be allocated and destroyed.
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* MemoryTracker is not used. AlignedBuffer is intended for small pieces of memory.
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*/
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class AlignedBuffer : private boost::noncopyable
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{
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private:
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void * buf = nullptr;
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void alloc(size_t size, size_t alignment);
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void dealloc();
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public:
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AlignedBuffer() {}
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AlignedBuffer(size_t size, size_t alignment);
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AlignedBuffer(AlignedBuffer && old) { std::swap(buf, old.buf); }
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~AlignedBuffer();
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void reset(size_t size, size_t alignment);
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char * data() { return static_cast<char *>(buf); }
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const char * data() const { return static_cast<const char *>(buf); }
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};
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}
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