| 1 | struct Counter { |
| 2 | mut: |
| 3 | value int |
| 4 | } |
| 5 | |
| 6 | fn (shared c Counter) inc() { |
| 7 | lock c { |
| 8 | c.value += 1 |
| 9 | } |
| 10 | } |
| 11 | |
| 12 | fn (c Counter) val() int { |
| 13 | return c.value |
| 14 | } |
| 15 | |
| 16 | fn test_main() { |
| 17 | shared c := Counter{1} |
| 18 | |
| 19 | assert rlock c { |
| 20 | c.val() |
| 21 | } == 1 |
| 22 | if rlock c { |
| 23 | c.val() |
| 24 | } == 1 { |
| 25 | assert true |
| 26 | } |
| 27 | |
| 28 | c.inc() |
| 29 | |
| 30 | assert rlock c { |
| 31 | c.val() |
| 32 | } == 2 |
| 33 | if rlock c { |
| 34 | c.val() |
| 35 | } == 2 { |
| 36 | assert true |
| 37 | } |
| 38 | } |
| 39 |