Tests atomicity of compareAndExchange.
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 | 32692 | ACCEPTABLE | actor1 update successfully |
| 2.0, 0.0, 2.0 | 128 | 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 | 882865 | ACCEPTABLE | actor1 update successfully |
| 2.0, 0.0, 2.0 | 192505 | 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 | 737677 | ACCEPTABLE | actor1 update successfully |
| 2.0, 0.0, 2.0 | 86383 | ACCEPTABLE | actor2 update successfully |
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 | 591855 | ACCEPTABLE | actor1 update successfully |
| 2.0, 0.0, 2.0 | 93385 | 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 | 110847 | ACCEPTABLE | actor1 update successfully |
| 2.0, 0.0, 2.0 | 46163 | 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 | 865493 | ACCEPTABLE | actor1 update successfully |
| 2.0, 0.0, 2.0 | 422207 | 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 | 1672994 | ACCEPTABLE | actor1 update successfully |
| 2.0, 0.0, 2.0 | 86936 | 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 | 235854 | ACCEPTABLE | actor1 update successfully |
| 2.0, 0.0, 2.0 | 274836 | ACCEPTABLE | actor2 update successfully |