1 /*
   2  * Copyright (c) 2019, 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 package sun.hotspot.code;
  25 
  26 import sun.hotspot.WhiteBox;
  27 
  28 public 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 }