vmkit/mmtk/java/src/org/j3/mmtk/Strings.java

//===------------------------- Strings.java -------------------------------===//
//
//                            The VMKit project
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

package org.j3.mmtk;

import org.vmmagic.pragma.Uninterruptible;


@Uninterruptible
public final class Strings extends org.mmtk.vm.Strings {
  /**
   * Log a message.
   *
   * @param c character array with message starting at index 0
   * @param len number of characters in message
   */
  public native void write(char [] c, int len);

  /**
   * Log a thread identifier and a message.
   *
   * @param c character array with message starting at index 0
   * @param len number of characters in message
   */
  public native void writeThreadId(char [] c, int len);

  /**
   * Copies characters from the string into the character array.
   * Thread switching is disabled during this method's execution.
   * <p>
   * <b>TODO:</b> There are special memory management semantics here that
   * someone should document.
   *
   * @param src the source string
   * @param dst the destination array
   * @param dstBegin the start offset in the desination array
   * @param dstEnd the index after the last character in the
   * destination to copy to
   * @return the number of characters copied.
   */
  public native int copyStringToChars(String src, char [] dst,
      int dstBegin, int dstEnd);
}