if (info.getName().endsWith("_gwt")) {
        Class<?> clazz = info.load();
        // TODO(cpovirk): why does asSubclass() throw? Is it something about ClassLoaders?
        @SuppressWarnings("unchecked")
        Class<? extends GWTTestCase> cast = (Class<? extends GWTTestCase>) clazz;
        suite.addTestSuite(cast);
      }
    }
    return suite;
  }

            @Override
            public short visitClass(Class<?> target) {
                ClassLoader classLoader = target.getClassLoader();
                if (classLoader == null || PLATFORM_CLASS_LOADERS.contains(classLoader)) {
                    knownLoaders.put(PLATFORM_CLASS_LOADER_ID, PLATFORM_CLASS_LOADER_DETAILS);
                    return PLATFORM_CLASS_LOADER_ID;

public class JavaHomeBasedJavaCompilerFactory implements Factory<ContextAwareJavaCompiler>, Serializable {
    private final List<File> compilerPluginsClasspath;
    // We use a static cache here because we want to reuse classloaders in compiler workers as
    // it has a huge impact on performance. Previously there was a single, JdkTools.current()
    // instance, but we can have different "compiler plugins" classpath. For this reason we use

    }

    @Override
    public ClassLoader getClassLoader(Location location) {
        ClassLoader classLoader = super.getClassLoader(location);
        if (location.equals(StandardLocation.ANNOTATION_PROCESSOR_PATH)) {
            if (classLoader instanceof URLClassLoader) {
                return new URLClassLoader(annotationProcessorPath.getAsURLArray(), getFilteredClassLoader(classLoader.getParent()));
            }
        }

            // TODO: we should just cache these classloaders and eject/stop them when they are no longer in use
            if (!reuseClassloader) {
                CompositeStoppable.stoppable(workerClassLoader).stop();
                this.workerClassLoader = null;
            }
        }
    }

import javax.annotation.Nullable;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

/**
 * A multi, volatile, classloader safe cache for model schemas.
 * <p>
 * Significant complexity is introduced by facilitating a volatile classloader environment.
 * That is, classes being loaded and unloaded for the life of this cache.

        settingsFile.text = 'rootProject.name = "not broken"'

        // Ensure daemon is reused
        toolingApi.requireIsolatedDaemons()

        // Copy each of the action classes into its own classes directory and load into a single ClassLoader

 */
public interface Isolatable<T> extends Hashable {
    /**
     * Returns this value as a {@link ValueSnapshot}. The returned value should not hold any references to user ClassLoaders.
     */
    ValueSnapshot asSnapshot();

    /**
     * Returns an instance of T that is isolated from the original object and all other instances.

     */
    ClassLoaderScope createLockedChild(String id, @Nullable ClassLoaderScopeOrigin origin, ClassPath localClasspath, @Nullable HashCode classpathImplementationHash, @Nullable Function<ClassLoader, ClassLoader> localClassLoaderFactory);

    /**

/**
 * Unit test for {@link FinalizableReferenceQueue}.
 *
 * @author Bob Lee
 */
// - depends on details of GC and classloading
// - .class files aren't available
// - possibly no real concept of separate ClassLoaders?
@AndroidIncompatible
@GwtIncompatible
public class FinalizableReferenceQueueTest extends TestCase {

  private @Nullable FinalizableReferenceQueue frq;

  @Override