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 package sun.hotspot.code;
  25 
  26 import java.lang.management.ManagementFactory;
  27 import java.lang.management.MemoryPoolMXBean;
  28 import java.util.EnumSet;
  29 
  30 import sun.hotspot.WhiteBox;
  31 
  32 public enum BlobType {
  33     // All types (No code cache segmentation)
  34     All(0, "CodeCache", "Code Cache", "ReservedCodeCacheSize");
  35 
  36     public final int id;
  37     public final String sizeOptionName;
  38     public final String beanName;
  39     public final String name;
  40 
  41     private BlobType(int id, String name, String beanName, String sizeOptionName) {
  42         this.id = id;
  43         this.name = name;
  44         this.beanName = beanName;
  45         this.sizeOptionName = sizeOptionName;
  46     }
  47 
  48     public MemoryPoolMXBean getMemoryPool() {
  49         for (MemoryPoolMXBean bean : ManagementFactory.getMemoryPoolMXBeans()) {
  50             String name = bean.getName();
  51             if (beanName.equals(name)) {
  52                 return bean;
  53             }
  54         }
  55         return null;
  56     }
  57 
  58     public boolean allowTypeWhenOverflow(BlobType type) {
  59         return type == this;
  60     }
  61 
  62     public static EnumSet<BlobType> getAvailable() {
  63         return EnumSet.of(All);
  64     }
  65 
  66     public long getSize() {
  67         return WhiteBox.getWhiteBox().getUintxVMFlag(sizeOptionName);
  68     }
  69 }