BlobType.java revision 1282:0f3ba0d7b789 
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
25package sun.hotspot.code;
26
27import java.lang.management.ManagementFactory;
28import java.lang.management.MemoryPoolMXBean;
29import java.util.EnumSet;
30
31import sun.hotspot.WhiteBox;
32
33public enum BlobType {
34    // Execution level 1 and 4 (non-profiled) nmethods (including native nmethods)
35    MethodNonProfiled(0, "CodeHeap 'non-profiled nmethods'", "NonProfiledCodeHeapSize"),
36    // Execution level 2 and 3 (profiled) nmethods
37    MethodProfiled(1, "CodeHeap 'profiled nmethods'", "ProfiledCodeHeapSize"),
38    // Non-nmethods like Buffers, Adapters and Runtime Stubs
39    NonNMethod(2, "CodeHeap 'non-nmethods'", "NonNMethodCodeHeapSize") {
40        @Override
41        public boolean allowTypeWhenOverflow(BlobType type) {
42            return super.allowTypeWhenOverflow(type)
43                    || type == BlobType.MethodNonProfiled;
44        }
45    },
46    // All types (No code cache segmentation)
47    All(3, "CodeCache", "ReservedCodeCacheSize");
48
49    public final int id;
50    public final String sizeOptionName;
51    public final String beanName;
52
53    private BlobType(int id, String beanName, String sizeOptionName) {
54        this.id = id;
55        this.beanName = beanName;
56        this.sizeOptionName = sizeOptionName;
57    }
58
59    public MemoryPoolMXBean getMemoryPool() {
60        for (MemoryPoolMXBean bean : ManagementFactory.getMemoryPoolMXBeans()) {
61            String name = bean.getName();
62            if (beanName.equals(name)) {
63                return bean;
64            }
65        }
66        return null;
67    }
68
69    public boolean allowTypeWhenOverflow(BlobType type) {
70        return type == this;
71    }
72
73    public static EnumSet<BlobType> getAvailable() {
74        WhiteBox whiteBox = WhiteBox.getWhiteBox();
75        if (!whiteBox.getBooleanVMFlag("SegmentedCodeCache")) {
76            // only All for non segmented world
77            return EnumSet.of(All);
78        }
79        if (System.getProperty("java.vm.info").startsWith("interpreted ")) {
80            // only NonNMethod for -Xint
81            return EnumSet.of(NonNMethod);
82        }
83
84        EnumSet<BlobType> result = EnumSet.complementOf(EnumSet.of(All));
85        if (!whiteBox.getBooleanVMFlag("TieredCompilation")
86                || whiteBox.getIntxVMFlag("TieredStopAtLevel") <= 1) {
87            // there is no MethodProfiled in non tiered world or pure C1
88            result.remove(MethodProfiled);
89        }
90        return result;
91    }
92
93    public long getSize() {
94        return WhiteBox.getWhiteBox().getUintxVMFlag(sizeOptionName);
95    }
96}
97