Function rpgffi::heap_lock_tuple

pub unsafe extern "C" fn heap_lock_tuple(
    relation: Relation, 
    tuple: HeapTuple, 
    cid: CommandId, 
    mode: LockTupleMode, 
    wait_policy: LockWaitPolicy, 
    follow_update: bool_, 
    buffer: *mut Buffer, 
    hufd: *mut HeapUpdateFailureData
) -> HTSU_Result