tools: EnginesGCedTest BufferCleaner::CleaningThread stays alive after JDK-8344332 [GR-67693]

Author: zapster

tools/src/com.oracle.truffle.tools.chromeinspector.test/src/com/oracle/truffle/tools/chromeinspector/test/EnginesGCedTest.java

@@ -28,13 +28,12 @@
 import java.util.HashSet;
 import java.util.Set;
 
+import org.graalvm.polyglot.Context;
+import org.graalvm.polyglot.Engine;
 import org.junit.After;
 import org.junit.Assert;
 import org.junit.Before;
 
-import org.graalvm.polyglot.Context;
-import org.graalvm.polyglot.Engine;
-
 import com.oracle.truffle.api.test.GCUtils;
 
 public abstract class EnginesGCedTest {
@@ -89,6 +88,10 @@ void checkCollected() {
                             // A libgraal thread
                             continue;
                         }
+                        if (t.getClass().getName().equals("java.nio.BufferCleaner$CleaningThread")) {
+                            // BufferCleaner::CleaningThread JDK-8344332 (JDK 26+6) [GR-67693]
+                            continue;
+                        }
                         Assert.fail("An extra thread " + t + " is found after test finished.");
                     }
                 }