Tests atomicity of compareAndExchange.
JVM options: [-Xint] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| 2, null, 2 | 30596 | ACCEPTABLE | actor2 update successfully |
| null, null, 2 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| null, null, null | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| null, null, object | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| null, object, object | 35934 | ACCEPTABLE | actor1 update successfully |
JVM options: [-client, -XX:-TieredCompilation] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| 2, null, 2 | 230162 | ACCEPTABLE | actor2 update successfully |
| null, null, 2 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| null, null, null | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| null, null, object | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| null, object, object | 301758 | ACCEPTABLE | actor1 update successfully |
JVM options: [-client] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| 2, null, 2 | 105234 | ACCEPTABLE | actor2 update successfully |
| null, null, 2 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| null, null, null | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| null, null, object | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| null, object, object | 308766 | ACCEPTABLE | actor1 update successfully |
JVM options: [-server] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| 2, null, 2 | 180238 | ACCEPTABLE | actor2 update successfully |
| null, null, 2 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| null, null, null | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| null, null, object | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| null, object, object | 256032 | ACCEPTABLE | actor1 update successfully |
JVM options: [-server, -XX:+UnlockDiagnosticVMOptions, -XX:+StressLCM, -XX:+StressGCM] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| 2, null, 2 | 375760 | ACCEPTABLE | actor2 update successfully |
| null, null, 2 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| null, null, null | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| null, null, object | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| null, object, object | 524350 | ACCEPTABLE | actor1 update successfully |
JVM options: [-server, -XX:-TieredCompilation] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| 2, null, 2 | 129242 | ACCEPTABLE | actor2 update successfully |
| null, null, 2 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| null, null, null | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| null, null, object | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| null, object, object | 376588 | ACCEPTABLE | actor1 update successfully |
JVM options: [-server, -XX:-TieredCompilation, -XX:+UnlockDiagnosticVMOptions, -XX:+StressLCM, -XX:+StressGCM] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| 2, null, 2 | 126850 | ACCEPTABLE | actor2 update successfully |
| null, null, 2 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| null, null, null | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| null, null, object | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| null, object, object | 218750 | ACCEPTABLE | actor1 update successfully |
JVM options: [-XX:TieredStopAtLevel=1] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| 2, null, 2 | 183275 | ACCEPTABLE | actor2 update successfully |
| null, null, 2 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| null, null, null | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| null, null, object | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| null, object, object | 551805 | ACCEPTABLE | actor1 update successfully |