}
        curr = succ;
      }
      break;
    }
  }

  // A heuristic for timed gets. If the remaining timeout is less than this, spin instead of
  // blocking. This value is what AbstractQueuedSynchronizer uses.
  private static final long SPIN_THRESHOLD_NANOS = 1000L;

  @VisibleForTesting
  static String atomicHelperTypeForTest() {

package org.codelibs.fess.app.service;

import java.io.IOException;
import java.io.Reader;
import java.io.Writer;
import java.util.ArrayList;
import java.util.List;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.beans.util.BeanUtil;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.Constants;
import org.codelibs.fess.app.pager.BadWordPager;

import static org.codelibs.fess.app.web.admin.fileauth.AdminFileauthAction.getFileAuthentication;

import java.util.List;
import java.util.stream.Collectors;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.fess.app.pager.FileAuthPager;
import org.codelibs.fess.app.service.FileAuthenticationService;
import org.codelibs.fess.app.service.FileConfigService;

import static org.junit.jupiter.api.Assertions.assertTrue;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.junit.jupiter.api.AfterAll;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.BeforeEach;

import java.io.IOException
import java.net.InetSocketAddress
import java.net.Socket
import java.security.GeneralSecurityException
import java.security.KeyStore
import java.util.logging.Level
import java.util.logging.Logger
import javax.net.ssl.ExtendedSSLSession
import javax.net.ssl.SNIHostName
import javax.net.ssl.SSLContext
import javax.net.ssl.SSLSocket
import javax.net.ssl.SSLSocketFactory

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.errorprone.annotations.concurrent.GuardedBy;
import java.util.concurrent.Executor;
import java.util.logging.Level;
import org.jspecify.annotations.Nullable;

/**
 * A support class for {@code ListenableFuture} implementations to manage their listeners. An

 */
package org.codelibs.fess.sso.spnego;

import java.io.File;
import java.util.Arrays;
import java.util.Enumeration;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.io.ResourceUtil;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.app.web.base.login.ActionResponseCredential;

import org.jspecify.annotations.Nullable;

/**
 * A listening executor service which forwards all its method calls to another listening executor
 * service. Subclasses should override one or more methods to modify the behavior of the backing
 * executor service as desired per the <a
 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>{@code default} method warning:</b> This class does <i>not</i> forward calls to {@code

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.stream.Collectors;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.fess.app.pager.SynonymPager;
import org.codelibs.fess.app.service.SynonymService;
import org.codelibs.fess.app.web.CrudMode;

import java.security.cert.CertificateException
import java.security.cert.X509Certificate
import java.util.concurrent.atomic.AtomicInteger
import java.util.logging.Handler
import java.util.logging.Level
import java.util.logging.LogRecord
import java.util.logging.Logger
import javax.net.ssl.HostnameVerifier
import javax.net.ssl.SSLPeerUnverifiedException
import javax.net.ssl.SSLSocket
import javax.net.ssl.TrustManagerFactory