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

Tests atomicity of compareAndSet.

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 20 ACCEPTABLE actor2 update successfully
true, false, 2.3509528E-38 27620 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 130767 ACCEPTABLE actor2 update successfully
true, false, 2.3509528E-38 322333 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 193667 ACCEPTABLE actor2 update successfully
true, false, 2.3509528E-38 435883 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 183943 ACCEPTABLE actor2 update successfully
true, false, 2.3509528E-38 625857 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 354417 ACCEPTABLE actor2 update successfully
true, false, 2.3509528E-38 513033 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 241133 ACCEPTABLE actor2 update successfully
true, false, 2.3509528E-38 569457 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, -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 367893 ACCEPTABLE actor2 update successfully
true, false, 2.3509528E-38 763437 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 68771 ACCEPTABLE actor2 update successfully
true, false, 2.3509528E-38 970049 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