org.openjdk.jcstress.tests.atomicity.varHandles.byteBuffer.direct.big.CASTest.CompareAndSetFloat

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 30565 ACCEPTABLE actor2 update successfully
true, false, 2.3509528E-38 54805 ACCEPTABLE actor1 update successfully
true, true, 2.0 0 FORBIDDEN not both shall succeed
true, true, 2.3509528E-38 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 25 ACCEPTABLE actor2 update successfully
true, false, 2.3509528E-38 15455 ACCEPTABLE actor1 update successfully
true, true, 2.0 0 FORBIDDEN not both shall succeed
true, true, 2.3509528E-38 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 45290 ACCEPTABLE actor2 update successfully
true, false, 2.3509528E-38 282430 ACCEPTABLE actor1 update successfully
true, true, 2.0 0 FORBIDDEN not both shall succeed
true, true, 2.3509528E-38 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 134022 ACCEPTABLE actor2 update successfully
true, false, 2.3509528E-38 428208 ACCEPTABLE actor1 update successfully
true, true, 2.0 0 FORBIDDEN not both shall succeed
true, true, 2.3509528E-38 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 34915 ACCEPTABLE actor2 update successfully
true, false, 2.3509528E-38 397075 ACCEPTABLE actor1 update successfully
true, true, 2.0 0 FORBIDDEN not both shall succeed
true, true, 2.3509528E-38 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 43398 ACCEPTABLE actor2 update successfully
true, false, 2.3509528E-38 171662 ACCEPTABLE actor1 update successfully
true, true, 2.0 0 FORBIDDEN not both shall succeed
true, true, 2.3509528E-38 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 17355 ACCEPTABLE actor2 update successfully
true, false, 2.3509528E-38 104855 ACCEPTABLE actor1 update successfully
true, true, 2.0 0 FORBIDDEN not both shall succeed
true, true, 2.3509528E-38 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 15744 ACCEPTABLE actor2 update successfully
true, false, 2.3509528E-38 141476 ACCEPTABLE actor1 update successfully
true, true, 2.0 0 FORBIDDEN not both shall succeed
true, true, 2.3509528E-38 0 FORBIDDEN not both shall succeed