Type Definition holochain_wasmer_guest::WasmSize

type WasmSize = u32;

something like usize for wasm wasm has a memory limit of 4GB so offsets and lengths fit in u32

when rust compiles to the wasm32-unknown-unknown target this means that usize will be u32 in wasm but the host could interpret usize as either u32 or u64.

we need the host and the guest to have a shared agreement on the size of an offset/length or the host will not be able to directly manipulate the host memory as it needs to

wasmer itself uses u32 in the WasmPtr abstraction etc. @see https://docs.rs/wasmer-runtime/0.17.0/wasmer_runtime/struct.WasmPtr.html