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ircd::buffer: Added padded() alignment query util.

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This commit is contained in:
Jason Volk 2020-07-07 17:01:32 -07:00
parent 59ce393581
commit 8777add24e
1 changed files with 13 additions and 1 deletions
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14
include/ircd/buffer/buffer.h
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@ -73,6 +73,7 @@ namespace ircd::buffer
template<class it> bool operator!(const buffer<it> &buffer);
template<class it> size_t size(const buffer<it> &buffer);
template<class it> const it &data(const buffer<it> &buffer);
template<class it> bool padded(const buffer<it> &buffer, const size_t &alignment);
template<class it> bool aligned(const buffer<it> &buffer, const size_t &alignment);
template<class it> buffer<it> operator+(const buffer<it> &buffer, const size_t &bytes);
size_t overlap_count(const const_buffer &, const const_buffer &);
@ -320,7 +321,18 @@ ircd::buffer::aligned(const buffer<it> &buffer,
const size_t &a)
{
return likely(a)?
uintptr_t(data(buffer)) % a == 0 && size(buffer) % a == 0:
uintptr_t(data(buffer)) % a == 0 && padded(buffer, a):
true;
}
template<class it>
inline bool
__attribute__((always_inline))
ircd::buffer::padded(const buffer<it> &buffer,
const size_t &a)
{
return likely(a)?
size(buffer) % a == 0:
true;
}