Tests atomicity of compareAndExchange.
JVM options: [-XX:TieredStopAtLevel=1] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| , , | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| , , A | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| , , C | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| , A, A | 1166085 | ACCEPTABLE | actor1 update successfully |
| C, , C | 807105 | ACCEPTABLE | actor2 update successfully |
JVM options: [-server, -XX:-TieredCompilation, -XX:+UnlockDiagnosticVMOptions, -XX:+StressLCM, -XX:+StressGCM] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| , , | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| , , A | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| , , C | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| , A, A | 443285 | ACCEPTABLE | actor1 update successfully |
| C, , C | 158295 | ACCEPTABLE | actor2 update successfully |
JVM options: [-server, -XX:+UnlockDiagnosticVMOptions, -XX:+StressLCM, -XX:+StressGCM] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| , , | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| , , A | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| , , C | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| , A, A | 555123 | ACCEPTABLE | actor1 update successfully |
| C, , C | 326227 | ACCEPTABLE | actor2 update successfully |
JVM options: [-server] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| , , | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| , , A | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| , , C | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| , A, A | 1154165 | ACCEPTABLE | actor1 update successfully |
| C, , C | 382705 | ACCEPTABLE | actor2 update successfully |
JVM options: [-server, -XX:-TieredCompilation] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| , , | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| , , A | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| , , C | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| , A, A | 995662 | ACCEPTABLE | actor1 update successfully |
| C, , C | 255318 | ACCEPTABLE | actor2 update successfully |
JVM options: [-client, -XX:-TieredCompilation] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| , , | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| , , A | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| , , C | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| , A, A | 732596 | ACCEPTABLE | actor1 update successfully |
| C, , C | 194564 | ACCEPTABLE | actor2 update successfully |
JVM options: [-client] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| , , | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| , , A | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| , , C | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| , A, A | 290348 | ACCEPTABLE | actor1 update successfully |
| C, , C | 230982 | ACCEPTABLE | actor2 update successfully |
JVM options: [-Xint] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| , , | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| , , A | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| , , C | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| , A, A | 52199 | ACCEPTABLE | actor1 update successfully |
| C, , C | 23021 | ACCEPTABLE | actor2 update successfully |