Tests atomicity of compareAndExchange.
JVM options: [-server, -XX:-TieredCompilation, -XX:+UnlockDiagnosticVMOptions, -XX:+StressLCM, -XX:+StressGCM] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| -2, 0, -2 | 249257 | ACCEPTABLE | actor2 update successfully |
| 0, -1, -1 | 457153 | ACCEPTABLE | actor1 update successfully |
| 0, 0, -1 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0, 0, -2 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0, 0, 0 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
JVM options: [-server, -XX:+UnlockDiagnosticVMOptions, -XX:+StressLCM, -XX:+StressGCM] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| -2, 0, -2 | 400672 | ACCEPTABLE | actor2 update successfully |
| 0, -1, -1 | 846528 | ACCEPTABLE | actor1 update successfully |
| 0, 0, -1 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0, 0, -2 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0, 0, 0 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
JVM options: [-server, -XX:-TieredCompilation] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| -2, 0, -2 | 513799 | ACCEPTABLE | actor2 update successfully |
| 0, -1, -1 | 282641 | ACCEPTABLE | actor1 update successfully |
| 0, 0, -1 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0, 0, -2 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0, 0, 0 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
JVM options: [-server] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| -2, 0, -2 | 456267 | ACCEPTABLE | actor2 update successfully |
| 0, -1, -1 | 1193803 | ACCEPTABLE | actor1 update successfully |
| 0, 0, -1 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0, 0, -2 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0, 0, 0 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
JVM options: [-XX:TieredStopAtLevel=1] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| -2, 0, -2 | 406402 | ACCEPTABLE | actor2 update successfully |
| 0, -1, -1 | 659398 | ACCEPTABLE | actor1 update successfully |
| 0, 0, -1 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0, 0, -2 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0, 0, 0 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
JVM options: [-client, -XX:-TieredCompilation] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| -2, 0, -2 | 300855 | ACCEPTABLE | actor2 update successfully |
| 0, -1, -1 | 942435 | ACCEPTABLE | actor1 update successfully |
| 0, 0, -1 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0, 0, -2 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0, 0, 0 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
JVM options: [-client] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| -2, 0, -2 | 168811 | ACCEPTABLE | actor2 update successfully |
| 0, -1, -1 | 1034539 | ACCEPTABLE | actor1 update successfully |
| 0, 0, -1 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0, 0, -2 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0, 0, 0 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
JVM options: [-Xint] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| -2, 0, -2 | 59508 | ACCEPTABLE | actor2 update successfully |
| 0, -1, -1 | 13542 | ACCEPTABLE | actor1 update successfully |
| 0, 0, -1 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0, 0, -2 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0, 0, 0 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |