BlobType.java revision 2289:1c9b94ce045e 
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 java.lang.management.ManagementFactory;
27import java.lang.management.MemoryPoolMXBean;
28import java.util.EnumSet;
29
30import sun.hotspot.WhiteBox;
31
32public enum BlobType {
33    // Execution level 1 and 4 (non-profiled) nmethods (including native nmethods)
34    MethodNonProfiled(0, "CodeHeap 'non-profiled nmethods'", "NonProfiledCodeHeapSize") {
35        @Override
36        public boolean allowTypeWhenOverflow(BlobType type) {
37            return super.allowTypeWhenOverflow(type)
38                    || type == BlobType.MethodProfiled;
39        }
40    },
41    // Execution level 2 and 3 (profiled) nmethods
42    MethodProfiled(1, "CodeHeap 'profiled nmethods'", "ProfiledCodeHeapSize") {
43        @Override
44        public boolean allowTypeWhenOverflow(BlobType type) {
45            return super.allowTypeWhenOverflow(type)
46                    || type == BlobType.MethodNonProfiled;
47        }
48    },
49    // Non-nmethods like Buffers, Adapters and Runtime Stubs
50    NonNMethod(2, "CodeHeap 'non-nmethods'", "NonNMethodCodeHeapSize") {
51        @Override
52        public boolean allowTypeWhenOverflow(BlobType type) {
53            return super.allowTypeWhenOverflow(type)
54                    || type == BlobType.MethodNonProfiled
55                    || type == BlobType.MethodProfiled;
56        }
57    },
58    // All types (No code cache segmentation)
59    All(3, "CodeCache", "ReservedCodeCacheSize");
60
61    public final int id;
62    public final String sizeOptionName;
63    public final String beanName;
64
65    private BlobType(int id, String beanName, String sizeOptionName) {
66        this.id = id;
67        this.beanName = beanName;
68        this.sizeOptionName = sizeOptionName;
69    }
70
71    public MemoryPoolMXBean getMemoryPool() {
72        for (MemoryPoolMXBean bean : ManagementFactory.getMemoryPoolMXBeans()) {
73            String name = bean.getName();
74            if (beanName.equals(name)) {
75                return bean;
76            }
77        }
78        return null;
79    }
80
81    public boolean allowTypeWhenOverflow(BlobType type) {
82        return type == this;
83    }
84
85    public static EnumSet<BlobType> getAvailable() {
86        WhiteBox whiteBox = WhiteBox.getWhiteBox();
87        if (!whiteBox.getBooleanVMFlag("SegmentedCodeCache")) {
88            // only All for non segmented world
89            return EnumSet.of(All);
90        }
91        if (System.getProperty("java.vm.info").startsWith("interpreted ")) {
92            // only NonNMethod for -Xint
93            return EnumSet.of(NonNMethod);
94        }
95
96        EnumSet<BlobType> result = EnumSet.complementOf(EnumSet.of(All));
97        if (!whiteBox.getBooleanVMFlag("TieredCompilation")
98                || whiteBox.getIntxVMFlag("TieredStopAtLevel") <= 1) {
99            // there is no MethodProfiled in non tiered world or pure C1
100            result.remove(MethodProfiled);
101        }
102        return result;
103    }
104
105    public long getSize() {
106        return WhiteBox.getWhiteBox().getUintxVMFlag(sizeOptionName);
107    }
108}
109