开启工作量证明任务，即挖矿
(&self, mut block: &mut Block)
| 37 | |
| 38 | // 开启工作量证明任务，即挖矿 |
| 39 | pub fn run(&self, mut block: &mut Block) { |
| 40 | println!("Start mining .... "); |
| 41 | thread::sleep(Duration::from_secs(3)); |
| 42 | |
| 43 | let mut nonce: u32 = 0; |
| 44 | while nonce <= MAX_NONCE { |
| 45 | // 计算值 |
| 46 | let hd_ser = Self::prepare_data(&mut block, nonce); |
| 47 | let mut hash_u: [u8; 32] = [0; 32]; |
| 48 | hash_u8(&hd_ser, &mut hash_u); |
| 49 | |
| 50 | // 判断值是否满足要求，满足则计算并设置区块哈希值 |
| 51 | let hash_int = U256::from(hash_u); |
| 52 | if hash_int <= self.target { |
| 53 | block.hash = hash_str(&hd_ser); |
| 54 | println!("Produce a new block!\n"); |
| 55 | return; |
| 56 | } |
| 57 | |
| 58 | nonce += 1; |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | // 准备区块头数据 |
| 63 | fn prepare_data(block: &mut Block, nonce: u32) -> Vec<u8> { |