NMethod.java revision 2289:1c9b94ce045e 
1/*
2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24package sun.hotspot.code;
25
26import java.lang.reflect.Executable;
27import sun.hotspot.WhiteBox;
28
29public class NMethod extends CodeBlob {
30  private static final WhiteBox wb = WhiteBox.getWhiteBox();
31  public static NMethod get(Executable method, boolean isOsr) {
32    Object[] obj = wb.getNMethod(method, isOsr);
33    return obj == null ? null : new NMethod(obj);
34  }
35  private NMethod(Object[] obj) {
36    super((Object[])obj[0]);
37    assert obj.length == 5;
38    comp_level = (Integer) obj[1];
39    insts = (byte[]) obj[2];
40    compile_id = (Integer) obj[3];
41    entry_point = (Long) obj[4];
42  }
43  public final byte[] insts;
44  public final int comp_level;
45  public final int compile_id;
46  public final long entry_point;
47
48  @Override
49  public String toString() {
50    return "NMethod{"
51        + super.toString()
52        + ", insts=" + insts
53        + ", comp_level=" + comp_level
54        + ", compile_id=" + compile_id
55        + ", entry_point=" + entry_point
56        + '}';
57  }
58}
59