org.openjdk.jcstress.tests.atomicity.varHandles.byteArray.little.CASTest.CompareAndSetDouble

Tests atomicity of compareAndSet.

JVM options: [-server, -XX:-TieredCompilation, -XX:+UnlockDiagnosticVMOptions, -XX:+StressLCM, -XX:+StressGCM] Iterations: 5 Time: 200

Observed state Occurrence Expectation Interpretation
false, false, 0.0 0 FORBIDDEN not both shall fail
false, true, 2.0 259005 ACCEPTABLE actor2 update successfully
true, false, 1.39067116124321E-309 119685 ACCEPTABLE actor1 update successfully
true, true, 1.39067116124321E-309 0 FORBIDDEN not both shall succeed
true, true, 2.0 0 FORBIDDEN not both shall succeed

JVM options: [-XX:TieredStopAtLevel=1] Iterations: 5 Time: 200

Observed state Occurrence Expectation Interpretation
false, false, 0.0 0 FORBIDDEN not both shall fail
false, true, 2.0 210576 ACCEPTABLE actor2 update successfully
true, false, 1.39067116124321E-309 1023484 ACCEPTABLE actor1 update successfully
true, true, 1.39067116124321E-309 0 FORBIDDEN not both shall succeed
true, true, 2.0 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, 0.0 0 FORBIDDEN not both shall fail
false, true, 2.0 46890 ACCEPTABLE actor2 update successfully
true, false, 1.39067116124321E-309 259230 ACCEPTABLE actor1 update successfully
true, true, 1.39067116124321E-309 0 FORBIDDEN not both shall succeed
true, true, 2.0 0 FORBIDDEN not both shall succeed

JVM options: [-server] Iterations: 5 Time: 200

Observed state Occurrence Expectation Interpretation
false, false, 0.0 0 FORBIDDEN not both shall fail
false, true, 2.0 147054 ACCEPTABLE actor2 update successfully
true, false, 1.39067116124321E-309 648946 ACCEPTABLE actor1 update successfully
true, true, 1.39067116124321E-309 0 FORBIDDEN not both shall succeed
true, true, 2.0 0 FORBIDDEN not both shall succeed

JVM options: [-server, -XX:-TieredCompilation] Iterations: 5 Time: 200

Observed state Occurrence Expectation Interpretation
false, false, 0.0 0 FORBIDDEN not both shall fail
false, true, 2.0 266485 ACCEPTABLE actor2 update successfully
true, false, 1.39067116124321E-309 757735 ACCEPTABLE actor1 update successfully
true, true, 1.39067116124321E-309 0 FORBIDDEN not both shall succeed
true, true, 2.0 0 FORBIDDEN not both shall succeed

JVM options: [-Xint] Iterations: 5 Time: 200

Observed state Occurrence Expectation Interpretation
false, false, 0.0 0 FORBIDDEN not both shall fail
false, true, 2.0 54 ACCEPTABLE actor2 update successfully
true, false, 1.39067116124321E-309 41676 ACCEPTABLE actor1 update successfully
true, true, 1.39067116124321E-309 0 FORBIDDEN not both shall succeed
true, true, 2.0 0 FORBIDDEN not both shall succeed

JVM options: [-client, -XX:-TieredCompilation] Iterations: 5 Time: 200

Observed state Occurrence Expectation Interpretation
false, false, 0.0 0 FORBIDDEN not both shall fail
false, true, 2.0 141353 ACCEPTABLE actor2 update successfully
true, false, 1.39067116124321E-309 389917 ACCEPTABLE actor1 update successfully
true, true, 1.39067116124321E-309 0 FORBIDDEN not both shall succeed
true, true, 2.0 0 FORBIDDEN not both shall succeed

JVM options: [-client] Iterations: 5 Time: 200

Observed state Occurrence Expectation Interpretation
false, false, 0.0 0 FORBIDDEN not both shall fail
false, true, 2.0 140518 ACCEPTABLE actor2 update successfully
true, false, 1.39067116124321E-309 567182 ACCEPTABLE actor1 update successfully
true, true, 1.39067116124321E-309 0 FORBIDDEN not both shall succeed
true, true, 2.0 0 FORBIDDEN not both shall succeed