Tests atomicity of compareAndExchange.
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 | 20077 | ACCEPTABLE | actor1 update successfully |
| C, , C | 8503 | 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 | 60150 | ACCEPTABLE | actor1 update successfully |
| C, , C | 24450 | 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 | 909556 | ACCEPTABLE | actor1 update successfully |
| C, , C | 189604 | 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 | 1216125 | ACCEPTABLE | actor1 update successfully |
| C, , C | 114235 | 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 | 2238564 | ACCEPTABLE | actor1 update successfully |
| C, , C | 689016 | ACCEPTABLE | actor2 update successfully |
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 | 1334979 | ACCEPTABLE | actor1 update successfully |
| C, , C | 915831 | 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 | 169683 | ACCEPTABLE | actor1 update successfully |
| C, , C | 111217 | 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 | 112018 | ACCEPTABLE | actor1 update successfully |
| C, , C | 43032 | ACCEPTABLE | actor2 update successfully |