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ircd::buffer: Support aligned allocations and aligned unique_buffer conversion.

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This commit is contained in:
Jason Volk 2019-09-01 16:15:34 -07:00
parent 7e3b5db06a
commit 062ea9ddf5
1 changed files with 35 additions and 12 deletions
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47
include/ircd/buffer/shared_buffer.h
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@ -18,16 +18,26 @@ struct ircd::buffer::shared_buffer
:std::shared_ptr<char>
,buffer
{
shared_buffer(const size_t &size);
shared_buffer(unique_buffer<buffer> &&);
shared_buffer();
explicit shared_buffer(const size_t &size, const size_t &align = 0);
shared_buffer(unique_buffer<buffer> &&) noexcept;
explicit shared_buffer(const const_buffer &);
shared_buffer() = default;
shared_buffer(shared_buffer &&) = default;
shared_buffer(const shared_buffer &) = default;
shared_buffer &operator=(shared_buffer &&) = default;
shared_buffer &operator=(const shared_buffer &) = default;
shared_buffer &operator=(unique_buffer<buffer> &&) noexcept;
~shared_buffer() = default;
};
template<class buffer>
ircd::buffer::shared_buffer<buffer>::shared_buffer()
:std::shared_ptr<char>
{
nullptr, std::free
}
{}
template<class buffer>
ircd::buffer::shared_buffer<buffer>::shared_buffer(const const_buffer &src)
:shared_buffer
@ -42,30 +52,43 @@ ircd::buffer::shared_buffer<buffer>::shared_buffer(const const_buffer &src)
template<class buffer>
ircd::buffer::shared_buffer<buffer>::shared_buffer(unique_buffer<buffer> &&buf)
noexcept
:std::shared_ptr<char>
{
data(buf),
std::default_delete<char[]>()
data(buf), std::free
}
,buffer
{
this->std::shared_ptr<char>::get(),
size(buf)
this->std::shared_ptr<char>::get(), size(buf)
}
{
buf.release();
}
template<class buffer>
ircd::buffer::shared_buffer<buffer>::shared_buffer(const size_t &size)
ircd::buffer::shared_buffer<buffer>::shared_buffer(const size_t &size,
const size_t &align)
:std::shared_ptr<char>
{
new __attribute__((aligned(16))) char[size],
std::default_delete<char[]>()
allocator::aligned_alloc(align, size).release(), std::free
}
,buffer
{
this->std::shared_ptr<char>::get(),
size
this->std::shared_ptr<char>::get(), size
}
{}
template<class buffer>
ircd::buffer::shared_buffer<buffer> &
ircd::buffer::shared_buffer<buffer>::operator=(unique_buffer<buffer> &&buf)
noexcept
{
this->std::shared_ptr<char>::reset(data(buf), std::free);
*static_cast<buffer *>(this) =
{
this->std::shared_ptr<char>::get(), size(buf)
};
buf.release();
return *this;
}