如果没有数据，发生阻塞
(retList *[]interface{})
| 26 | |
| 27 | // 如果没有数据，发生阻塞 |
| 28 | func (self *Pipe) Pick(retList *[]interface{}) (exit bool) { |
| 29 | |
| 30 | self.listGuard.Lock() |
| 31 | |
| 32 | for len(self.list) == 0 { |
| 33 | self.listCond.Wait() |
| 34 | } |
| 35 | |
| 36 | self.listGuard.Unlock() |
| 37 | |
| 38 | self.listGuard.Lock() |
| 39 | |
| 40 | // 复制出队列 |
| 41 | |
| 42 | for _, data := range self.list { |
| 43 | |
| 44 | if data == nil { |
| 45 | exit = true |
| 46 | break |
| 47 | } else { |
| 48 | *retList = append(*retList, data) |
| 49 | } |
| 50 | } |
| 51 | |
| 52 | self.Reset() |
| 53 | self.listGuard.Unlock() |
| 54 | |
| 55 | return |
| 56 | } |
| 57 | |
| 58 | func NewPipe() *Pipe { |
| 59 | self := &Pipe{} |