sync: add len and is_empty methods to mpsc senders
#11227
| Job | Run time |
|---|---|
| 18s | |
| 3s | |
| 1m 8s | |
| 45s | |
| 22s | |
| 25s | |
| 1s | |
| 6m 20s | |
| 8m 18s | |
| 2m 55s | |
| 36s | |
| 2m 35s | |
| 3m 47s | |
| 3m 50s | |
| 1m 15s | |
| 3m 4s | |
| 1m 8s | |
| 3m 41s | |
| 4m 13s | |
| 1m 43s | |
| 4m 57s | |
| 1m 35s | |
| 3m 52s | |
| 16m 18s | |
| 7m 11s | |
| 3m 53s | |
| 1m 1s | |
| 23s | |
| 2m 54s | |
| 25s | |
| 4m 28s | |
| 28s | |
| 3m 2s | |
| 1m 27s | |
| 3m 19s | |
| 3m 19s | |
| 1m 11s | |
| 8m 5s | |
| 3m 18s | |
| 2m 40s | |
| 3m 19s | |
| 2m 51s | |
| 7m 12s | |
| 6m 1s | |
| 9m 42s | |
| 3m 13s | |
| 1m 58s | |
| 5m 38s | |
| 32s | |
| 2m 19s | |
| 21s | |
| 22s | |
| 39s | |
| 54s | |
| 48s | |
| 3m 4s | |
| 1m 17s | |
| 2m 0s | |
| 1m 17s | |
| 56s | |
| 55s | |
| 52s | |
| 26s | |
| 2m 42s | |
| 44s | |
| 2m 46s | |
| 1m 30s | |
| 0s | |
| 3h 4m 31s |