org.openjdk.jcstress.tests.atomicity.varHandles.arrays.WeakCASTest.WeakCompareAndSetChar

Tests atomicity of weakCompareAndSet.

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

Observed state Occurrence Expectation Interpretation
false, false, 806 ACCEPTABLE both may fail
false, true, C 108487 ACCEPTABLE actor2 update successfully
true, false, A 606137 ACCEPTABLE actor1 update successfully
true, true, A 0 FORBIDDEN not both shall succeed
true, true, C 0 FORBIDDEN not both shall succeed

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

Observed state Occurrence Expectation Interpretation
false, false, 0 ACCEPTABLE both may fail
false, true, C 5401 ACCEPTABLE actor2 update successfully
true, false, A 32319 ACCEPTABLE actor1 update successfully
true, true, A 0 FORBIDDEN not both shall succeed
true, true, C 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, 1675 ACCEPTABLE both may fail
false, true, C 178278 ACCEPTABLE actor2 update successfully
true, false, A 705697 ACCEPTABLE actor1 update successfully
true, true, A 0 FORBIDDEN not both shall succeed
true, true, C 0 FORBIDDEN not both shall succeed

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

Observed state Occurrence Expectation Interpretation
false, false, 470 ACCEPTABLE both may fail
false, true, C 73805 ACCEPTABLE actor2 update successfully
true, false, A 731255 ACCEPTABLE actor1 update successfully
true, true, A 0 FORBIDDEN not both shall succeed
true, true, C 0 FORBIDDEN not both shall succeed

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

Observed state Occurrence Expectation Interpretation
false, false, 539 ACCEPTABLE both may fail
false, true, C 69325 ACCEPTABLE actor2 update successfully
true, false, A 1422186 ACCEPTABLE actor1 update successfully
true, true, A 0 FORBIDDEN not both shall succeed
true, true, C 0 FORBIDDEN not both shall succeed

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

Observed state Occurrence Expectation Interpretation
false, false, 0 ACCEPTABLE both may fail
false, true, C 420540 ACCEPTABLE actor2 update successfully
true, false, A 651380 ACCEPTABLE actor1 update successfully
true, true, A 0 FORBIDDEN not both shall succeed
true, true, C 0 FORBIDDEN not both shall succeed

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

Observed state Occurrence Expectation Interpretation
false, false, 32 ACCEPTABLE both may fail
false, true, C 41249 ACCEPTABLE actor2 update successfully
true, false, A 101629 ACCEPTABLE actor1 update successfully
true, true, A 0 FORBIDDEN not both shall succeed
true, true, C 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, 694 ACCEPTABLE both may fail
false, true, C 182265 ACCEPTABLE actor2 update successfully
true, false, A 657071 ACCEPTABLE actor1 update successfully
true, true, A 0 FORBIDDEN not both shall succeed
true, true, C 0 FORBIDDEN not both shall succeed