*/
val hashMapCodec: Codec<HashMap<Any?, Any?>> = mapCodec { LinkedHashMap(it) }


val linkedHashMapCodec: Codec<LinkedHashMap<Any?, Any?>> = mapCodec { LinkedHashMap(it) }


val concurrentHashMapCodec: Codec<ConcurrentHashMap<Any?, Any?>> = mapCodec { ConcurrentHashMap<Any?, Any?>(it) }


/*
 * Cannot rely on Java serialization as

   * @see FileChannel#map(MapMode, long, long)
   * @since 2.0
   */
  public static MappedByteBuffer map(File file, MapMode mode) throws IOException {
    return mapInternal(file, mode, -1);
  }

  /**
   * Maps a file in to memory as per {@link FileChannel#map(java.nio.channels.FileChannel.MapMode,
   * long, long)} using the requested {@link MapMode}.
   *

   * @see FileChannel#map(MapMode, long, long)
   * @since 2.0
   */
  public static MappedByteBuffer map(File file, MapMode mode) throws IOException {
    return mapInternal(file, mode, -1);
  }

  /**
   * Maps a file in to memory as per {@link FileChannel#map(java.nio.channels.FileChannel.MapMode,
   * long, long)} using the requested {@link MapMode}.
   *

import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.Channel;
import java.nio.channels.FileChannel;
import java.nio.channels.FileChannel.MapMode;

import org.codelibs.core.exception.IORuntimeException;

/**
 * {@link Channel}用のユーティリティです。
 *
 * @author koichik
 */
public abstract class ChannelUtil {

    /**