@RetainedLocalRef Future<?> localTimer = timer;
    // Try to cancel the timer as an optimization.
    // timer may be null if this call to run was by the timer task since there is no happens-before
    // edge between the assignment to timer and an execution of the timer task.
    if (localTimer != null) {
      localTimer.cancel(false);
    }

    delegateRef = null;
    timer = null;
  }

        return status == STOPPED;
    }

    /**
     * Stops the timer.
     */
    public void stop() {
        if (status != ACTIVE) {
            throw new ClIllegalStateException(String.valueOf(status));
        }
        status = STOPPED;
    }

    /**
     * Restarts the timer.
     */
    public void restart() {
        status = ACTIVE;

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.timer;

import org.codelibs.core.timer.TimeoutTarget;
import org.codelibs.fess.unit.UnitFessTestCase;

/**
 * Test class for HotThreadMonitorTarget.
 */
public class HotThreadMonitorTargetTest extends UnitFessTestCase {

 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.timer;

import java.lang.reflect.Method;

import org.codelibs.core.timer.TimeoutTarget;
import org.codelibs.fess.unit.UnitFessTestCase;

/**
 * Test class for SystemMonitorTarget.
 */
public class SystemMonitorTargetTest extends UnitFessTestCase {

import org.codelibs.core.misc.DynamicProperties;
import org.codelibs.core.timer.TimeoutManager;
import org.codelibs.core.timer.TimeoutTask;
import org.codelibs.fess.Constants;
import org.codelibs.fess.crawler.client.FesenClient;
import org.codelibs.fess.exception.ContainerNotAvailableException;
import org.codelibs.fess.opensearch.client.SearchEngineClient;
import org.codelibs.fess.timer.SystemMonitorTarget;
import org.codelibs.fess.util.ComponentUtil;

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.timer;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.function.Supplier;

import org.apache.commons.io.output.ByteArrayOutputStream;
import org.apache.commons.text.StringEscapeUtils;
import org.codelibs.core.timer.TimeoutTarget;
import org.codelibs.fess.Constants;

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.core.timer;

/**
 * This is an interface for handling timeouts.
 *
 * @author higa
 *
 */
@FunctionalInterface
public interface TimeoutTarget {

    /**
     * Describes the processing for a timeout.

/**
 * A class that handles timers.
 *
 * @author higa
 *
 */
public class TimeoutManager implements Runnable {

    private static final Logger logger = Logger.getLogger(TimeoutManager.class);

    /**
     * Instance for the singleton.
     */
    protected static final TimeoutManager instance = new TimeoutManager();

    /**
     * {@link Thread} for the timer.
     */
    protected Thread thread;

 */
package org.codelibs.fess.app.job;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.core.timer.TimeoutManager;
import org.codelibs.fess.Constants;
import org.codelibs.fess.app.logic.AccessContextLogic;
import org.codelibs.fess.app.service.ScheduledJobService;
import org.codelibs.fess.helper.JobHelper;

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.timer;

import java.io.ByteArrayOutputStream;
import java.io.OutputStream;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

import org.apache.commons.text.StringEscapeUtils;