NMethod.java revision 1742:4982ccf5052b 
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 */
24
25package sun.hotspot.code;
26
27import java.lang.reflect.Executable;
28import sun.hotspot.WhiteBox;
29
30public class NMethod extends CodeBlob {
31  private static final WhiteBox wb = WhiteBox.getWhiteBox();
32  public static NMethod get(Executable method, boolean isOsr) {
33    Object[] obj = wb.getNMethod(method, isOsr);
34    return obj == null ? null : new NMethod(obj);
35  }
36  private NMethod(Object[] obj) {
37    super((Object[])obj[0]);
38    assert obj.length == 5;
39    comp_level = (Integer) obj[1];
40    insts = (byte[]) obj[2];
41    compile_id = (Integer) obj[3];
42    entry_point = (Long) obj[4];
43  }
44  public final byte[] insts;
45  public final int comp_level;
46  public final int compile_id;
47  public final long entry_point;
48
49  @Override
50  public String toString() {
51    return "NMethod{"
52        + super.toString()
53        + ", insts=" + insts
54        + ", comp_level=" + comp_level
55        + ", compile_id=" + compile_id
56        + ", entry_point=" + entry_point
57        + '}';
58  }
59}
60