*/
  protected void triggerShutdown() {}

  /**
   * Returns the {@link Executor} that will be used to run this service. Subclasses may override
   * this method to use a custom {@link Executor}, which may configure its worker thread with a
   * specific name, thread group or priority. The returned executor's {@link
   * Executor#execute(Runnable) execute()} method is called when this service is started, and should

    final BlockTarget waitFor = new BlockTarget(instant)

    public final TestExecutor executor = new TestExecutor(logger)
    public final TestExecutorFactory executorFactory = new TestExecutorFactory(executor)

    def setup() {
        instant.mainThread(Thread.currentThread())
    }

    def cleanup() {
        try {
            executor.stop(new Date(System.currentTimeMillis() + 5000))
        } finally {

        when:
        GradleExecuter executor = prepareWrapperExecuter(previous, current).withJavaHome(jdk.javaHome)

        then:
        def result = executor.usingExecutable('gradlew').withArgument('help').runWithFailure()

   */
  protected void triggerShutdown() {}

  /**
   * Returns the {@link Executor} that will be used to run this service. Subclasses may override
   * this method to use a custom {@link Executor}, which may configure its worker thread with a
   * specific name, thread group or priority. The returned executor's {@link
   * Executor#execute(Runnable) execute()} method is called when this service is started, and should

import org.gradle.integtests.fixtures.executer.AbstractGradleExecuter
import org.gradle.integtests.fixtures.executer.ExecutionFailure
import org.gradle.integtests.fixtures.executer.ExecutionResult
import org.gradle.integtests.fixtures.executer.GradleDistribution
import org.gradle.integtests.fixtures.executer.OutputScrapingExecutionFailure
import org.gradle.integtests.fixtures.executer.OutputScrapingExecutionResult

        then:
        instant.thing == operation.thing.end
    }

    static class Worker {
        final Executor executor
        final Object lock = new Object()
        int count

        Worker(Executor executor) {
            this.executor = executor
        }

        void run(Runnable runnable, int timeoutSeconds) {
            def finished = new CountDownLatch(1)

fun createQuickFeedbackTasks() {
    val testType = TestType.CROSSVERSION
    val defaultExecuter = "embedded"
    val prefix = testType.prefix
    testType.executers.forEach { executer ->
        val taskName = "$executer${prefix.capitalize()}Test"
        val testTask = createTestTask(taskName, executer, sourceSet, testType) {
            this.setSystemPropertiesOfTestJVM("latest")
            this.systemProperties["org.gradle.integtest.crossVersion"] = "true"

import org.gradle.exemplar.executor.CommandExecutor;
import org.gradle.integtests.fixtures.AvailableJavaHomes;
import org.gradle.integtests.fixtures.executer.ExecutionFailure;
import org.gradle.integtests.fixtures.executer.ExecutionResult;
import org.gradle.integtests.fixtures.executer.GradleContextualExecuter;
import org.gradle.integtests.fixtures.executer.GradleDistribution;

@ThreadSafe
public interface PlanExecutor {
    /**
     * Executes a {@link WorkSource}, blocking until complete.
     *
     * @param workSource the work to execute.
     * @param worker the actual executor responsible to execute the nodes. Must be thread-safe.
     */
    <T> ExecutionResult<Void> process(WorkSource<T> workSource, Action<T> worker);

    /**

    void isDaemon(def action) {
        def runnable = unwrapAction(action)
        def executor = unwrapExecutor(runnable)
        assert executor instanceof DaemonClient
    }

    void isInProcess(def action) {
        def runnable = unwrapAction(action)
        def executor = unwrapExecutor(runnable)
        assert executor instanceof RunInProcess
    }

    void isSingleUseDaemon(def action) {