Tests atomicity of compareAndExchange.
JVM options: [-XX:TieredStopAtLevel=1] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| false, false, false | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| false, false, true | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| false, false, true | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| false, true, true | 1100052 | ACCEPTABLE | actor1 update successfully |
| true, false, true | 539288 | ACCEPTABLE | actor2 update successfully |
JVM options: [-server, -XX:-TieredCompilation, -XX:+UnlockDiagnosticVMOptions, -XX:+StressLCM, -XX:+StressGCM] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| false, false, false | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| false, false, true | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| false, false, true | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| false, true, true | 717377 | ACCEPTABLE | actor1 update successfully |
| true, false, true | 320953 | ACCEPTABLE | actor2 update successfully |
JVM options: [-server] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| false, false, false | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| false, false, true | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| false, false, true | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| false, true, true | 1017045 | ACCEPTABLE | actor1 update successfully |
| true, false, true | 287755 | ACCEPTABLE | actor2 update successfully |
JVM options: [-server, -XX:-TieredCompilation] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| false, false, false | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| false, false, true | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| false, false, true | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| false, true, true | 1017144 | ACCEPTABLE | actor1 update successfully |
| true, false, true | 307726 | ACCEPTABLE | actor2 update successfully |
JVM options: [-Xint] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| false, false, false | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| false, false, true | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| false, false, true | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| false, true, true | 33725 | ACCEPTABLE | actor1 update successfully |
| true, false, true | 30885 | ACCEPTABLE | actor2 update successfully |
JVM options: [-server, -XX:+UnlockDiagnosticVMOptions, -XX:+StressLCM, -XX:+StressGCM] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| false, false, false | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| false, false, true | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| false, false, true | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| false, true, true | 645548 | ACCEPTABLE | actor1 update successfully |
| true, false, true | 258972 | ACCEPTABLE | actor2 update successfully |
JVM options: [-client, -XX:-TieredCompilation] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| false, false, false | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| false, false, true | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| false, false, true | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| false, true, true | 424842 | ACCEPTABLE | actor1 update successfully |
| true, false, true | 274788 | ACCEPTABLE | actor2 update successfully |
JVM options: [-client] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| false, false, false | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| false, false, true | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| false, false, true | 0 | FORBIDDEN | This won't happen because compareAndExchange is atomic |
| false, true, true | 1086362 | ACCEPTABLE | actor1 update successfully |
| true, false, true | 181188 | ACCEPTABLE | actor2 update successfully |