Tests VarHandle methods which take effect of load load fence.
http://docs.oracle.com/javase/specs/jls/se7/html/jls-17.html#jls-17.7
| java.specification.name | Java Platform API Specification |
| java.specification.vendor | Oracle Corporation |
| java.specification.version | 10 |
| java.vendor | Oracle Corporation |
| java.version | 10-internal |
| java.vm.name | OpenJDK 64-Bit Server VM |
| java.vm.vendor | Oracle Corporation |
| java.vm.version | 10-internal+0-adhoc.buildslave.jdk10 |
| os.arch | aarch64 |
| os.name | Linux |
| os.version | 4.4.0-63-generic |
| TC 1 | JVM options: [] Iterations: 5 Time: 200 |
| TC 2 | JVM options: [-XX:+UnlockDiagnosticVMOptions, -XX:+StressLCM, -XX:+StressGCM] Iterations: 5 Time: 200 |
| TC 3 | JVM options: [-XX:-TieredCompilation] Iterations: 5 Time: 200 |
| TC 4 | JVM options: [-XX:-TieredCompilation, -XX:+UnlockDiagnosticVMOptions, -XX:+StressLCM, -XX:+StressGCM] Iterations: 5 Time: 200 |
| TC 5 | JVM options: [-XX:TieredStopAtLevel=1] Iterations: 5 Time: 200 |
| TC 6 | JVM options: [-Xint] Iterations: 5 Time: 200 |
| Observed state | TC 1 | TC 2 | TC 3 | TC 4 | TC 5 | TC 6 | Expectation | Interpretation |
|---|---|---|---|---|---|---|---|---|
| -1, -1 | 5956398 | 5216785 | 1760275 | 2672001 | 4678961 | 69091 | ACCEPTABLE | actor2 observe the variables after actor1 update completely |
| 0, -1 | 138302 | 21984 | 302 | 23495 | 59190 | 14962 | ACCEPTABLE | actor2 observe the variables after x is already updated but var hasn't yet |
| 0, 0 | 103478 | 8359 | 3861 | 215362 | 42487 | 18715 | ACCEPTABLE | actor2 observe the variables before actor1 update |
| OK | OK | OK | OK | OK | OK |