coordinator.getIdleMillis() == 0L
        }
    }

    def "idle millis is > 0 when daemon is idle"() {
        when:
        coordinator.updateActivityTimestamp()
        sleep(10)

        then:
        idle
        coordinator.getIdleMillis() > 0
    }

    boolean isNotStopped() {
        return coordinator.state != Stopped && coordinator.state != ForceStopped
    }

        "//tensorflow/core:test",
        "//tensorflow/core:test_main",
        "//tensorflow/core:testlib",
    ],
)

cc_library(
    name = "coordinator",
    srcs = ["training/coordinator.cc"],
    hdrs = ["training/coordinator.h"],
    deps = [
        "//tensorflow/core:lib",
        "//tensorflow/core:lib_internal",
        "//tensorflow/core:protos_all_cc",
    ],
)

tf_cc_test(

    // Queue a task to interrupt the waiting coordinator.
    serialTaskQueue +=
      object : SerialTask {
        override fun start() {
          taskRunner.assertThreadHoldsLock()
          waitingCoordinatorInterrupted = true
          val coordinatorTask = waitingCoordinatorTask ?: error("no coordinator waiting")
          currentTask = coordinatorTask

// If a test process terminates unexpectedly while fuzzing, coordinate will
// attempt to restart and continue unless the termination can be attributed
// to an interruption (from a timer or the user).
//
// While looping, coordinate receives inputs from the coordinator, passes
// those inputs to the worker process, then passes the results back to
// the coordinator.
func (w *worker) coordinate(ctx context.Context) error {
	// Main event loop.

	// the coordinator's combined set. When minimizing, the worker should find an
	// input that preserves at least one of these bits. keepCoverage is nil for
	// crashing inputs.
	keepCoverage []byte
}

// coordinator holds channels that workers can use to communicate with
// the coordinator.
type coordinator struct {
	opts CoordinateFuzzingOpts

          return readyTask
        }

        // Notify the coordinator of a task that's coming up soon.
        coordinatorWaiting -> {
          if (minDelayNanos < coordinatorWakeUpAt - now) {
            backend.coordinatorNotify(this@TaskRunner)
          }
          return null
        }

        // No other thread is coordinating. Become the coordinator!
        else -> {
          coordinatorWaiting = true

    def listenerBuildOperationDecorator = new TestListenerBuildOperationDecorator()
    def workerLimits = new DefaultWorkerLimits(1)
    def workerLeases = new DefaultWorkerLeaseService(coordinator, workerLimits)
    def executorFactory = Mock(ExecutorFactory)
    def accessHierarchies = new ExecutionNodeAccessHierarchies(CASE_SENSITIVE, Stub(Stat))

  @Test fun onlyOneCoordinatorWaitingToStartFutureTasks() {
    // Enqueueing the red task starts a coordinator thread.
    redQueue.execute("red task", 100.µs) {
      log += "red:run@${taskFaker.nanoTime}"
    }
    assertThat(taskFaker.executeCallCount).isEqualTo(1)

    // Enqueueing the blue task doesn't need a 2nd coordinator yet.
    blueQueue.execute("blue task", 200.µs) {
      log += "blue:run@${taskFaker.nanoTime}"
    }

		return !t.Failed()
	}

	switch f.fuzzContext.mode {
	case fuzzCoordinator:
		// Fuzzing is enabled, and this is the test process started by 'go test'.
		// Act as the coordinator process, and coordinate workers to perform the
		// actual fuzzing.
		corpusTargetDir := filepath.Join(corpusDir, f.name)
		cacheTargetDir := filepath.Join(*fuzzCacheDir, f.name)
		err := f.fuzzContext.deps.CoordinateFuzzing(

        executionPlan?.close()
        new DefaultExecutionPlan(Path.ROOT.toString(), taskNodeFactory, new OrdinalGroupFactory(), dependencyResolver, accessHierarchies.outputHierarchy, accessHierarchies.destroyableHierarchy, coordinator)
    }

    def "schedules tasks in dependency order"() {
        given:
        Task a = task("a")
        Task b = task("b", dependsOn: [a])
        Task c = task("c", dependsOn: [b, a])