Struct oasis_contract_sdk::memory::HostRegion

#[repr(C)]
pub struct HostRegion {
    pub offset: u32,
    pub length: u32,
}

A region of memory managed on behalf of the host.

The host is responsible for deallocating the region by calling deallocate.

Fields

offset: u32

length: u32

Implementations

impl HostRegion

pub fn from_arg((offset, length): (u32, u32)) -> Self

Creates a new host region from arguments.

This does not yet transfer memory ownership from the host.

pub fn from_args(offset: u32, length: u32) -> Self

Creates a new host region from arguments.

This does not yet transfer memory ownership from the host.

pub fn from_vec(data: Vec<u8>) -> Self

Transfers ownership of memory to the host by constructing a host region.

pub fn into_vec(self) -> Vec<u8>

Transfers ownership of memory from the host and returns the vector.

Safety

This is safe as long as the region was constructed from valid arguments.

pub unsafe fn deref(arg: *const HostRegion) -> Self

Returns a new region by dereferencing a pointer to the region.

This does not yet transfer memory ownership from the host.

Safety

This is safe as long as the pointer is a valid pointer to the region struct.