CodeBlob.java revision 2400:5068c84c0844 
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 sun.hotspot.WhiteBox;
27
28public class CodeBlob {
29  private static final WhiteBox WB = WhiteBox.getWhiteBox();
30  public static CodeBlob[] getCodeBlobs(BlobType type) {
31    Object[] obj = WB.getCodeHeapEntries(type.id);
32    if (obj == null) {
33      return null;
34    }
35    CodeBlob[] result = new CodeBlob[obj.length];
36    for (int i = 0, n = result.length; i < n; ++i) {
37      result[i] = new CodeBlob((Object[]) obj[i]);
38    }
39    return result;
40  }
41  public static CodeBlob getCodeBlob(long addr) {
42    Object[] obj = WB.getCodeBlob(addr);
43    if (obj == null) {
44      return null;
45    }
46    return new CodeBlob(obj);
47  }
48  protected CodeBlob(Object[] obj) {
49    assert obj.length == 4;
50    name = (String) obj[0];
51    size = (Integer) obj[1];
52    int blob_type_index = (Integer) obj[2];
53    if (blob_type_index == -1) { // AOT
54      code_blob_type = null;
55    } else {
56      code_blob_type = BlobType.values()[blob_type_index];
57      assert code_blob_type.id == (Integer) obj[2];
58    }
59    address = (Long) obj[3];
60  }
61  public final String name;
62  public final int size;
63  public final BlobType code_blob_type;
64  public final long address;
65  @Override
66  public String toString() {
67    return "CodeBlob{"
68        + "name=" + name
69        + ", size=" + size
70        + ", code_blob_type=" + code_blob_type
71        + ", address=" + address
72        + '}';
73  }
74}
75