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.