NMethod.java

/*
 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 */

package sun.hotspot.code;

import java.lang.reflect.Executable;
import sun.hotspot.WhiteBox;

public class NMethod {
  private static final WhiteBox wb = WhiteBox.getWhiteBox();
  public static NMethod get(Executable method, boolean isOsr) {
    Object[] obj = wb.getNMethod(method, isOsr);
    return obj == null ? null : new NMethod(obj);
  }
  private NMethod(Object[] obj) {
    assert obj.length == 3;
    comp_level = (Integer) obj[0];
    compile_id = (Integer) obj[1];
    insts = (byte[]) obj[2];
  }
  public final byte[] insts;
  public final int comp_level;
  public final int compile_id;

  @Override
  public String toString() {
    return "NMethod{" +
        "insts=" + insts +
        ", comp_level=" + comp_level +
        ", compile_id=" + compile_id +
        '}';
  }
}