Tests if operations on buffers are atomic.
http://cs.oswego.edu/pipermail/concurrency-interest/2012-December/010390.html
http://mail.openjdk.java.net/pipermail/core-libs-dev/2012-December/013133.html
| java.specification.name | Java Platform API Specification |
| java.specification.vendor | Oracle Corporation |
| java.specification.version | 14 |
| java.vendor | N/A |
| java.version | 14.0.1-internal |
| java.vm.name | OpenJDK 64-Bit Server VM |
| java.vm.vendor | Oracle Corporation |
| java.vm.version | 14.0.1-internal+0-adhoc.buildslave.jdk14 |
| os.arch | aarch64 |
| os.name | Linux |
| os.version | 4.16.0-290-arm64 |
| TC 1 | JVM options: [-XX:-TieredCompilation] Iterations: 1 Time: 10 Stride: [10, 128] (capped by TIME) |
| TC 2 | JVM options: [-XX:-TieredCompilation, -XX:+UnlockDiagnosticVMOptions, -XX:+StressLCM, -XX:+StressGCM] Iterations: 1 Time: 10 Stride: [10, 32] (capped by TIME) |
| TC 3 | JVM options: [-XX:TieredStopAtLevel=1] Iterations: 1 Time: 10 Stride: [10, 256] (capped by TIME) |
| TC 4 | JVM options: [-Xint] Iterations: 1 Time: 10 Stride: [10, 64] (capped by TIME) |
| Observed state | TC 1 | TC 2 | TC 3 | TC 4 | Expectation | Interpretation |
|---|---|---|---|---|---|---|
| -1 | 2807 | 896 | 6135 | 1921 | ACCEPTABLE | Seeing the complete update. |
| 0 | 10 | 1 | 0 | 30 | ACCEPTABLE | Seeing the default value, this is valid under race. |
| OK | OK | OK | OK |