Function heap_lock_tuple

pub unsafe fn heap_lock_tuple(
    arg_relation: Relation,
    arg_tuple: HeapTuple,
    arg_cid: CommandId,
    arg_mode: Type,
    arg_wait_policy: Type,
    arg_follow_update: bool,
    arg_buffer: *mut Buffer,
    arg_tmfd: *mut TM_FailureData,
) -> Type