(ch <-chan T)
| 171 | } |
| 172 | |
| 173 | func tryReadCh[T any](ch <-chan T) (*T, bool) { |
| 174 | select { |
| 175 | case rtn := <-ch: |
| 176 | return &rtn, true |
| 177 | default: |
| 178 | return nil, false |
| 179 | } |
| 180 | } |
| 181 | |
| 182 | func (cb *CirBuf) tryWakeWriter() { |
| 183 | if waiterCh, ok := tryReadCh(cb.waiterChan); ok { |