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 
  25 package sun.hotspot.code;
  26 
  27 import java.lang.management.ManagementFactory;
  28 import java.lang.management.MemoryPoolMXBean;
  29 import java.util.EnumSet;
  30 
  31 import sun.hotspot.WhiteBox;
  32 
  33 public enum BlobType {
  34     // Execution level 1 and 4 (non-profiled) nmethods (including native nmethods)
  35     MethodNonProfiled(0, "CodeHeap 'non-profiled nmethods'", "NonProfiledCodeHeapSize") {
  36         @Override
  37         public boolean allowTypeWhenOverflow(BlobType type) {
  38             return super.allowTypeWhenOverflow(type)
  39                     || type == BlobType.MethodProfiled;
  40         }
  41     },
  42     // Execution level 2 and 3 (profiled) nmethods
  43     MethodProfiled(1, "CodeHeap 'profiled nmethods'", "ProfiledCodeHeapSize") {
  44         @Override
  45         public boolean allowTypeWhenOverflow(BlobType type) {
  46             return super.allowTypeWhenOverflow(type)
  47                     || type == BlobType.MethodNonProfiled;
  48         }
  49     },
  50     // Non-nmethods like Buffers, Adapters and Runtime Stubs
  51     NonNMethod(2, "CodeHeap 'non-nmethods'", "NonNMethodCodeHeapSize") {
  52         @Override
  53         public boolean allowTypeWhenOverflow(BlobType type) {
  54             return super.allowTypeWhenOverflow(type)
  55                     || type == BlobType.MethodNonProfiled
  56                     || type == BlobType.MethodProfiled;
  57         }
  58     },
  59     // All types (No code cache segmentation)
  60     All(3, "CodeCache", "ReservedCodeCacheSize");
  61 
  62     public final int id;
  63     public final String sizeOptionName;
  64     public final String beanName;
  65 
  66     private BlobType(int id, String beanName, String sizeOptionName) {
  67         this.id = id;
  68         this.beanName = beanName;
  69         this.sizeOptionName = sizeOptionName;
  70     }
  71 
  72     public MemoryPoolMXBean getMemoryPool() {
  73         for (MemoryPoolMXBean bean : ManagementFactory.getMemoryPoolMXBeans()) {
  74             String name = bean.getName();
  75             if (beanName.equals(name)) {
  76                 return bean;
  77             }
  78         }
  79         return null;
  80     }
  81 
  82     public boolean allowTypeWhenOverflow(BlobType type) {
  83         return type == this;
  84     }
  85 
  86     public static EnumSet<BlobType> getAvailable() {
  87         WhiteBox whiteBox = WhiteBox.getWhiteBox();
  88         if (!whiteBox.getBooleanVMFlag("SegmentedCodeCache")) {
  89             // only All for non segmented world
  90             return EnumSet.of(All);
  91         }
  92         if (System.getProperty("java.vm.info").startsWith("interpreted ")) {
  93             // only NonNMethod for -Xint
  94             return EnumSet.of(NonNMethod);
  95         }
  96 
  97         EnumSet<BlobType> result = EnumSet.complementOf(EnumSet.of(All));
  98         if (!whiteBox.getBooleanVMFlag("TieredCompilation")
  99                 || whiteBox.getIntxVMFlag("TieredStopAtLevel") <= 1) {
 100             // there is no MethodProfiled in non tiered world or pure C1
 101             result.remove(MethodProfiled);
 102         }
 103         return result;
 104     }
 105 
 106     public long getSize() {
 107         return WhiteBox.getWhiteBox().getUintxVMFlag(sizeOptionName);
 108     }
 109 }