reth_db::mdbx::ffi

Type Alias MDBX_cmp_func

source 
pub type MDBX_cmp_func = Option<unsafe extern "C" fn(_: *const iovec, _: *const iovec) -> i32>;
Available on crate feature mdbx only.

Aliased Type§

enum MDBX_cmp_func {
    None,
    Some(unsafe extern "C" fn(_: *const iovec, _: *const iovec) -> i32),
}

Variants§

§1.0.0

None

No value.

§1.0.0

Some(unsafe extern "C" fn(_: *const iovec, _: *const iovec) -> i32)

Some value of type T.

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 8 bytes

Size for each variant:

  • None: 0 bytes
  • Some: 8 bytes