Tests atomicity of compareAndExchange.
JVM options: [-XX:TieredStopAtLevel=1] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| 0.0, 0.0, 0.0 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0.0, 0.0, 2.0 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0.0, 0.0, 2.3509528E-38 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0.0, 2.3509528E-38, 2.3509528E-38 | 838003 | ACCEPTABLE | actor1 update successfully |
| 2.0, 0.0, 2.0 | 104627 | ACCEPTABLE | actor2 update successfully |
JVM options: [-server, -XX:-TieredCompilation, -XX:+UnlockDiagnosticVMOptions, -XX:+StressLCM, -XX:+StressGCM] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| 0.0, 0.0, 0.0 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0.0, 0.0, 2.0 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0.0, 0.0, 2.3509528E-38 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0.0, 2.3509528E-38, 2.3509528E-38 | 785828 | ACCEPTABLE | actor1 update successfully |
| 2.0, 0.0, 2.0 | 204402 | ACCEPTABLE | actor2 update successfully |
JVM options: [-Xint] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| 0.0, 0.0, 0.0 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0.0, 0.0, 2.0 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0.0, 0.0, 2.3509528E-38 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0.0, 2.3509528E-38, 2.3509528E-38 | 22407 | ACCEPTABLE | actor1 update successfully |
| 2.0, 0.0, 2.0 | 113 | ACCEPTABLE | actor2 update successfully |
JVM options: [-client] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| 0.0, 0.0, 0.0 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0.0, 0.0, 2.0 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0.0, 0.0, 2.3509528E-38 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0.0, 2.3509528E-38, 2.3509528E-38 | 752118 | ACCEPTABLE | actor1 update successfully |
| 2.0, 0.0, 2.0 | 467522 | ACCEPTABLE | actor2 update successfully |
JVM options: [-client, -XX:-TieredCompilation] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| 0.0, 0.0, 0.0 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0.0, 0.0, 2.0 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0.0, 0.0, 2.3509528E-38 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0.0, 2.3509528E-38, 2.3509528E-38 | 965732 | ACCEPTABLE | actor1 update successfully |
| 2.0, 0.0, 2.0 | 369858 | ACCEPTABLE | actor2 update successfully |
JVM options: [-server, -XX:+UnlockDiagnosticVMOptions, -XX:+StressLCM, -XX:+StressGCM] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| 0.0, 0.0, 0.0 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0.0, 0.0, 2.0 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0.0, 0.0, 2.3509528E-38 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0.0, 2.3509528E-38, 2.3509528E-38 | 729543 | ACCEPTABLE | actor1 update successfully |
| 2.0, 0.0, 2.0 | 324457 | ACCEPTABLE | actor2 update successfully |
JVM options: [-server, -XX:-TieredCompilation] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| 0.0, 0.0, 0.0 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0.0, 0.0, 2.0 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0.0, 0.0, 2.3509528E-38 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0.0, 2.3509528E-38, 2.3509528E-38 | 657405 | ACCEPTABLE | actor1 update successfully |
| 2.0, 0.0, 2.0 | 132005 | ACCEPTABLE | actor2 update successfully |
JVM options: [-server] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| 0.0, 0.0, 0.0 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0.0, 0.0, 2.0 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0.0, 0.0, 2.3509528E-38 | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| 0.0, 2.3509528E-38, 2.3509528E-38 | 605890 | ACCEPTABLE | actor1 update successfully |
| 2.0, 0.0, 2.0 | 190280 | ACCEPTABLE | actor2 update successfully |