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 | 84705 | ACCEPTABLE | actor2 update successfully |
| 0, -1, -1 | 82295 | 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 | 34296 | ACCEPTABLE | actor2 update successfully |
| 0, -1, -1 | 161054 | 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 | 46763 | ACCEPTABLE | actor2 update successfully |
| 0, -1, -1 | 173417 | 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 | 128143 | ACCEPTABLE | actor2 update successfully |
| 0, -1, -1 | 398437 | 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 | 59114 | ACCEPTABLE | actor2 update successfully |
| 0, -1, -1 | 222816 | 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 | 44183 | ACCEPTABLE | actor2 update successfully |
| 0, -1, -1 | 321887 | 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 | 8460 | ACCEPTABLE | actor2 update successfully |
| 0, -1, -1 | 15190 | 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 | 84289 | ACCEPTABLE | actor2 update successfully |
| 0, -1, -1 | 340431 | 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 |