Tests weakCompareAndSet contend with strong compareAndSet.
JVM options: [-client, -XX:-TieredCompilation] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| false, false, null | 0 | FORBIDDEN | not both shall fail |
| false, true, 2 | 366644 | ACCEPTABLE | actor2 execute before actor1 or win the contention with actor1 |
| true, false, object | 421066 | ACCEPTABLE | actor2 execute after actor1 |
| true, true, 2 | 0 | FORBIDDEN | not both shall succeed |
| true, true, object | 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, null | 0 | FORBIDDEN | not both shall fail |
| false, true, 2 | 332608 | ACCEPTABLE | actor2 execute before actor1 or win the contention with actor1 |
| true, false, object | 416812 | ACCEPTABLE | actor2 execute after actor1 |
| true, true, 2 | 0 | FORBIDDEN | not both shall succeed |
| true, true, object | 0 | FORBIDDEN | not both shall succeed |
JVM options: [-client] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| false, false, null | 0 | FORBIDDEN | not both shall fail |
| false, true, 2 | 506365 | ACCEPTABLE | actor2 execute before actor1 or win the contention with actor1 |
| true, false, object | 786745 | ACCEPTABLE | actor2 execute after actor1 |
| true, true, 2 | 0 | FORBIDDEN | not both shall succeed |
| true, true, object | 0 | FORBIDDEN | not both shall succeed |
JVM options: [-Xint] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| false, false, null | 0 | FORBIDDEN | not both shall fail |
| false, true, 2 | 56094 | ACCEPTABLE | actor2 execute before actor1 or win the contention with actor1 |
| true, false, object | 11806 | ACCEPTABLE | actor2 execute after actor1 |
| true, true, 2 | 0 | FORBIDDEN | not both shall succeed |
| true, true, object | 0 | FORBIDDEN | not both shall succeed |
JVM options: [-server] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| false, false, null | 0 | FORBIDDEN | not both shall fail |
| false, true, 2 | 211990 | ACCEPTABLE | actor2 execute before actor1 or win the contention with actor1 |
| true, false, object | 279620 | ACCEPTABLE | actor2 execute after actor1 |
| true, true, 2 | 0 | FORBIDDEN | not both shall succeed |
| true, true, object | 0 | FORBIDDEN | not both shall succeed |
JVM options: [-server, -XX:-TieredCompilation] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| false, false, null | 0 | FORBIDDEN | not both shall fail |
| false, true, 2 | 304361 | ACCEPTABLE | actor2 execute before actor1 or win the contention with actor1 |
| true, false, object | 367189 | ACCEPTABLE | actor2 execute after actor1 |
| true, true, 2 | 0 | FORBIDDEN | not both shall succeed |
| true, true, object | 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, null | 0 | FORBIDDEN | not both shall fail |
| false, true, 2 | 147194 | ACCEPTABLE | actor2 execute before actor1 or win the contention with actor1 |
| true, false, object | 97916 | ACCEPTABLE | actor2 execute after actor1 |
| true, true, 2 | 0 | FORBIDDEN | not both shall succeed |
| true, true, object | 0 | FORBIDDEN | not both shall succeed |
JVM options: [-XX:TieredStopAtLevel=1] Iterations: 5 Time: 200
| Observed state | Occurrence | Expectation | Interpretation |
|---|---|---|---|
| false, false, null | 0 | FORBIDDEN | not both shall fail |
| false, true, 2 | 478256 | ACCEPTABLE | actor2 execute before actor1 or win the contention with actor1 |
| true, false, object | 1152104 | ACCEPTABLE | actor2 execute after actor1 |
| true, true, 2 | 0 | FORBIDDEN | not both shall succeed |
| true, true, object | 0 | FORBIDDEN | not both shall succeed |