Function presser::copy_from_slice_to_offset_with_align
source · pub fn copy_from_slice_to_offset_with_align<T: Copy, S: Slab + ?Sized>(
src: &[T],
dst: &mut S,
start_offset: usize,
min_alignment: usize
) -> Result<CopyRecord, Error>
Expand description
Copies from slice
into the memory represented by dst
starting at a minimum location
of start_offset
bytes past the start of dst
.
start_offset
is the offset into the allocation represented bydst
, in bytes, before which any copied data will certainly not be placed. However, the actual beginning of the copied data may not be exactly atstart_offset
if padding bytes are needed to satisfy alignment requirements. The actual beginning of the copied bytes is contained in the returnedCopyRecord
.min_alignment
is the minimum alignment that you are requesting the copy be aligned to. The copy may be aligned greater thanmin_alignment
depending on the alignment requirements ofT
(the actual alignment will be the greater of the two betweenalign_of::<T>()
andmin_align.next_power_of_two()
).- The whole data of the slice will be copied directly, so alignment between elements
ignores
min_alignment
.
- The whole data of the slice will be copied directly, so alignment between elements
ignores
Safety
This function is safe on its own, however it is very possible to do unsafe things if you read the copied data in the wrong way. See the crate-level Safety documentation for more.