Return a shared copy of @size bytes from @mem starting from @offset. No
memory copy is performed and the memory region is simply shared. The result
is guaranteed to be non-writable. @size can be set to -1 to return a shared
copy from @offset to the end of the memory region.
Return a shared copy of @size bytes from @mem starting from @offset. No memory copy is performed and the memory region is simply shared. The result is guaranteed to be non-writable. @size can be set to -1 to return a shared copy from @offset to the end of the memory region.