Return the length (in bytes) of the referenced data

Return true iff "x" is a prefix of "*this"

update data if this key existed: for mc_ops replace, append, prepend

towards the root */

Apply all of the edits in *edit to the current state.

Returns true iff the status indicates a NotFound error.

This function will process the next 512 bits of the message stored in the Message_Block array.

Save the current state in *v.

move an element suitably so it is in a correct place */

* atomic_add_return - add and return * @param v pointer of type atomic_t * @param i integer value to add * * Atomically adds i to v and returns i

* atomic_dec - decrement atomic variable * @param v pointer of type atomic_t * * Atomically decrements v by 1. */

check boundary. return true, if the `value belong to the range [low_bound, upper_bound], otherwise return false.

dump err info, type 0 for dump text info, typy 1 for dump binary info

* 清除掉 */

add addr