// Everything is up-to-date
    object Valid : CheckedFingerprint()

    // The entry cannot be reused at all and should be recreated from scratch
    class EntryInvalid(val reason: String) : CheckedFingerprint()

    // The entry can be reused, however the values for certain projects cannot be reused and should be recreated
    class ProjectsInvalid(val reason: String, val invalidProjects: Set<Path>) : CheckedFingerprint()

         * An empty list means the work was up-to-date and hasn't been executed.
         */
        ImmutableList<String> getExecutionReasons();

        /**
         * If a previously produced output was reused in some way, the reused output's origin metadata is returned.
         */
        Optional<OriginMetadata> getReusedOutputOriginMetadata();

        /**
         * State after execution.
         */
        @VisibleForTesting

import org.gradle.internal.cc.impl.fixtures.SomeToolingModel

class IsolatedProjectsToolingApiParallelModelQueryIntegrationTest extends AbstractIsolatedProjectsToolingApiIntegrationTest {

    def "intermediate model is cached and reused for nested concurrent requests"() {
        // Sleep to ensure concurrent requests for the same model catch up before the first one is finished
        withSomeToolingModelBuilderPluginInBuildSrc("""
            Thread.sleep(3000)

 * limitations under the License.
 */

package org.gradle.internal.cc.impl

class ConfigurationCacheMultiProjectIntegrationTest extends AbstractConfigurationCacheIntegrationTest {

    def "reuses cache for absolute task invocation from subproject dir across dirs"() {
        given:
        settingsFile << """
            include 'a', 'b'
        """
        buildScript """
            task ok
        """

 */
@ServiceScope(Scope.Global.class)
public interface GradleModuleServices extends ServiceRegistrationProvider {
    /**
     * Called once per process, to register any globally scoped services. These services are reused across builds in the same process.
     * The services are closed when the process finishes.
     *
     * <p>Global services are visible to all other services.</p>
     *
     * @see Scope.Global
     */

        when:
        configurationCacheRun "help", "--offline"
        then:
        configurationCache.assertStateStored()

        // Now repeat invocations in different order to make sure both entries can be reused
        when:
        configurationCacheRun "help"
        then:
        configurationCache.assertStateLoaded()

        when:
        configurationCacheRun "help", "--offline"
        then:

     * <p>The Ivy instance of the calling thread is reused if the thread is already executing an action against an Ivy instance.
     */
    void withIvy(Action<? super Ivy> action);

    /**
     * Executes the given action against an Ivy instance and returns the result. Sets up the Ivy context before the action and cleans up at the end.
     *

        buildFile << """
            plugins.apply(my.MyPlugin)
            println("configuring root")
        """
    }

    def "parameterized models are reused in the same build action"() {
        when:
        executer.withArguments(ENABLE_CLI)
        def models = runBuildAction(new FetchParameterizedCustomModelForEachProject(["fetch1", "fetch2", "fetch1", "fetch2"]))

        result.assertHasPostBuildOutput("Configuration cache entry stored.")

        when:
        configurationCacheRun("ok")

        then:
        result.assertHasPostBuildOutput("Configuration cache entry reused.")

        when:
        configurationCacheFails("broken")

        then:
        outputContains("Configuration cache entry discarded with 2 problems.")
        problems.assertFailureHasProblems(failure) {

	// TODO(go.dev/issue/67642): When there are concurrent Wait calls, one
	// may wait on the wrong process if the PID is reused after the
	// completes its wait.
	//
	// Checking for statusDone here would not be a complete fix, as the PID
	// could still be waited on and reused prior to blockUntilWaitable.
	switch p.pidStatus() {
	case statusReleased:
		return nil, syscall.EINVAL
	}