org.openjdk.jcstress.tests.atomicity.varHandles.arrays.WeakCASContendStrongTest.WeakCompareAndSetPlainString

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 13
java.vendor N/A
java.version 13-internal
java.vm.name OpenJDK 64-Bit Server VM
java.vm.vendor Oracle Corporation
java.vm.version 13-internal+0-adhoc.buildslave.jdk13
os.arch aarch64
os.name Linux
os.version 4.16.0-290-arm64

Test configurations

TC 1 JVM options: [-XX:-TieredCompilation] Iterations: 1 Time: 10 Stride: [10, 10000] (capped by NONE)
TC 2 JVM options: [-XX:-TieredCompilation, -XX:+UnlockDiagnosticVMOptions, -XX:+StressLCM, -XX:+StressGCM] Iterations: 1 Time: 10 Stride: [10, 4096] (capped by TIME)
TC 3 JVM options: [-XX:TieredStopAtLevel=1] Iterations: 1 Time: 10 Stride: [10, 8192] (capped by TIME)
TC 4 JVM options: [-Xint] Iterations: 1 Time: 10 Stride: [1, 1] (capped by TIME)

Observed states

Observed state TC 1 TC 2 TC 3 TC 4 Expectation Interpretation
false, true, 2 4065 2118 1793 2 ACCEPTABLE actor2 execute before actor1 or win the contention with actor1
true, false, object 333076 109379 230754 1 ACCEPTABLE actor2 execute after actor1
OK OK OK OK

Auxiliary data