Tests weakCompareAndSet contend with strong compareAndSet.
JVM options: [-XX:TieredStopAtLevel=1] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| false, false, 0 | 0 | FORBIDDEN | not both shall fail |
| false, true, -2 | 113624 | ACCEPTABLE | actor2 execute before actor1 or win the contention with actor1 |
| true, false, -1 | 228486 | ACCEPTABLE | actor2 execute after actor1 |
| true, true, -1 | 0 | FORBIDDEN | not both shall succeed |
| true, true, -2 | 0 | FORBIDDEN | not both shall succeed |
JVM options: [-server, -XX:-TieredCompilation, -XX:+UnlockDiagnosticVMOptions, -XX:+StressLCM, -XX:+StressGCM] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| false, false, 0 | 0 | FORBIDDEN | not both shall fail |
| false, true, -2 | 357740 | ACCEPTABLE | actor2 execute before actor1 or win the contention with actor1 |
| true, false, -1 | 416840 | ACCEPTABLE | actor2 execute after actor1 |
| true, true, -1 | 0 | FORBIDDEN | not both shall succeed |
| true, true, -2 | 0 | FORBIDDEN | not both shall succeed |
JVM options: [-server, -XX:+UnlockDiagnosticVMOptions, -XX:+StressLCM, -XX:+StressGCM] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| false, false, 0 | 0 | FORBIDDEN | not both shall fail |
| false, true, -2 | 242398 | ACCEPTABLE | actor2 execute before actor1 or win the contention with actor1 |
| true, false, -1 | 177322 | ACCEPTABLE | actor2 execute after actor1 |
| true, true, -1 | 0 | FORBIDDEN | not both shall succeed |
| true, true, -2 | 0 | FORBIDDEN | not both shall succeed |
JVM options: [-client, -XX:-TieredCompilation] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| false, false, 0 | 0 | FORBIDDEN | not both shall fail |
| false, true, -2 | 855453 | ACCEPTABLE | actor2 execute before actor1 or win the contention with actor1 |
| true, false, -1 | 1665387 | ACCEPTABLE | actor2 execute after actor1 |
| true, true, -1 | 0 | FORBIDDEN | not both shall succeed |
| true, true, -2 | 0 | FORBIDDEN | not both shall succeed |
JVM options: [-client] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| false, false, 0 | 0 | FORBIDDEN | not both shall fail |
| false, true, -2 | 419466 | ACCEPTABLE | actor2 execute before actor1 or win the contention with actor1 |
| true, false, -1 | 618194 | ACCEPTABLE | actor2 execute after actor1 |
| true, true, -1 | 0 | FORBIDDEN | not both shall succeed |
| true, true, -2 | 0 | FORBIDDEN | not both shall succeed |
JVM options: [-Xint] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| false, false, 0 | 0 | FORBIDDEN | not both shall fail |
| false, true, -2 | 45749 | ACCEPTABLE | actor2 execute before actor1 or win the contention with actor1 |
| true, false, -1 | 15241 | ACCEPTABLE | actor2 execute after actor1 |
| true, true, -1 | 0 | FORBIDDEN | not both shall succeed |
| true, true, -2 | 0 | FORBIDDEN | not both shall succeed |
JVM options: [-server, -XX:-TieredCompilation] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| false, false, 0 | 0 | FORBIDDEN | not both shall fail |
| false, true, -2 | 295110 | ACCEPTABLE | actor2 execute before actor1 or win the contention with actor1 |
| true, false, -1 | 395670 | ACCEPTABLE | actor2 execute after actor1 |
| true, true, -1 | 0 | FORBIDDEN | not both shall succeed |
| true, true, -2 | 0 | FORBIDDEN | not both shall succeed |
JVM options: [-server] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| false, false, 0 | 0 | FORBIDDEN | not both shall fail |
| false, true, -2 | 486210 | ACCEPTABLE | actor2 execute before actor1 or win the contention with actor1 |
| true, false, -1 | 636060 | ACCEPTABLE | actor2 execute after actor1 |
| true, true, -1 | 0 | FORBIDDEN | not both shall succeed |
| true, true, -2 | 0 | FORBIDDEN | not both shall succeed |