Type Alias MDB_assert_func

pub type MDB_assert_func = Option<unsafe extern "C" fn(env: *mut MDB_env, msg: *const c_char)>;

A callback function for most LMDB assert() failures, called before printing the message and aborting.

Arguments

• env (direction in) - An environment handle returned by #mdb_env_create().
• msg (direction in) - The assertion message, not including newline.

Aliased Type

enum MDB_assert_func {
    None,
    Some(unsafe extern "C" fn(_: *mut MDB_env, _: *const i8)),
}

Variants

None

No value.

Some(unsafe extern "C" fn(_: *mut MDB_env, _: *const i8))

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