JikesRVMSupport.java

/*
 *  This file is part of the Jikes RVM project (http://jikesrvm.org).
 *
 *  This file is licensed to You under the Eclipse Public License (EPL);
 *  You may not use this file except in compliance with the License. You
 *  may obtain a copy of the License at
 *
 *      http://www.opensource.org/licenses/eclipse-1.0.php
 *
 *  See the COPYRIGHT.txt file distributed with this work for information
 *  regarding copyright ownership.
 */
package java.nio;

import org.vmmagic.unboxed.*;
import gnu.classpath.Pointer;

/**
 * Library support interface of Jikes RVM
 */
public class JikesRVMSupport {
  public static Address getDirectBufferAddress(Buffer buffer) {
    if (buffer.address == null)
      return Address.zero();
    else
      return gnu.classpath.JikesRVMSupport.getAddressFromPointer(buffer.address);
  }

  public static ByteBuffer newDirectByteBuffer(Address address, long capacity) {
    Pointer pointer = gnu.classpath.JikesRVMSupport.getPointerFromAddress(address);
    return new DirectByteBufferImpl.ReadWrite(null, pointer, (int)capacity, (int)capacity, 0);
  }
}