// GWT's ConcurrentHashMap is a wrapper around HashMap, but it rejects null keys, which matches
    // the behaviour of the non-GWT implementation of newConcurrentHashSet().
    // On the other hand HashSet might be better for code size if apps aren't
    // already using Collections.newSetFromMap and ConcurrentHashMap.
    return Collections.newSetFromMap(new ConcurrentHashMap<E, Boolean>());
  }

        val rootBuildDir: DirectoryProperty
    }

    private val projectStates: ConcurrentHashMap<String, TestFilesCleanupProjectState> = ConcurrentHashMap()

    /**
     * Key is the path of a task, value is the possible report dirs it generates.
     */
    private val taskPathToReports: ConcurrentHashMap<String, List<ReportLocation>> = ConcurrentHashMap()

    /**
     * @see ReportLocation.resolve
     */
    @Volatile

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

import java.time.LocalDateTime;
import java.util.Iterator;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.stream.Collectors;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.timer.TimeoutManager;
import org.codelibs.core.timer.TimeoutTask;

  private val requestQueue = LinkedBlockingQueue<RecordedRequest>()
  private val openClientSockets =
    Collections.newSetFromMap(ConcurrentHashMap<Socket, Boolean>())
  private val openConnections =
    Collections.newSetFromMap(ConcurrentHashMap<Http2Connection, Boolean>())

  private val atomicRequestCount = AtomicInteger()

  private var serverSocketFactory_: ServerSocketFactory? = null

 */
package org.codelibs.fess.helper;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.ConcurrentHashMap;
import java.util.function.Consumer;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.core.timer.TimeoutManager;

/**
 * The concurrent hash map implementation built by {@link MapMaker}.
 *
 * <p>This implementation is heavily derived from revision 1.96 of <a
 * href="http://tinyurl.com/ConcurrentHashMap">ConcurrentHashMap.java</a>.
 *
 * @param <K> the type of the keys in the map
 * @param <V> the type of the values in the map
 * @param <E> the type of the {@link InternalEntry} entry implementation used internally

   * @since 15.0
   */
  public static <E> Set<E> newConcurrentHashSet() {
    return Collections.newSetFromMap(new ConcurrentHashMap<E, Boolean>());
  }

  /**
   * Creates a thread-safe set backed by a hash map and containing the given elements. The set is
   * backed by a {@link ConcurrentHashMap} instance, and thus carries the same concurrency
   * guarantees.
   *

/**
 * The concurrent hash map implementation built by {@link MapMaker}.
 *
 * <p>This implementation is heavily derived from revision 1.96 of <a
 * href="http://tinyurl.com/ConcurrentHashMap">ConcurrentHashMap.java</a>.
 *
 * @param <K> the type of the keys in the map
 * @param <V> the type of the values in the map
 * @param <E> the type of the {@link InternalEntry} entry implementation used internally

import com.google.common.annotations.J2ktIncompatible;
import java.util.Arrays;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import org.jspecify.annotations.Nullable;

/**
 * Methods factored out so that they can be emulated differently in GWT.
 *
 * @author Hayward Chan
 */
@GwtCompatible
final class Platform {

import java.net.InetSocketAddress
import java.net.ProtocolException
import java.net.Proxy
import java.net.ServerSocket
import java.net.Socket
import java.net.SocketException
import java.util.concurrent.ConcurrentHashMap
import java.util.concurrent.Executors
import java.util.concurrent.TimeUnit
import java.util.concurrent.atomic.AtomicInteger
import java.util.logging.Level
import java.util.logging.Logger