org.openjdk.jcstress.tests.atomicity.varHandles.byteBuffer.heap.big.WeakCASContendStrongTest.WeakCompareAndSetPlainFloat

Description and references

Tests weakCompareAndSet contend with strong compareAndSet.

Environment

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

Test configurations

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 states

Observed state TC 1 TC 2 TC 3 TC 4 TC 5 TC 6 Expectation Interpretation
false, true, 2.0 128769 237789 129435 138417 181264 86 ACCEPTABLE actor2 execute before actor1 or win the contention with actor1
true, false, 2.3509528E-38 1808559 2938489 2323443 1583461 2069314 52062 ACCEPTABLE actor2 execute after actor1
OK OK OK OK OK OK

Auxiliary data