BlobType.java revision 1265:c82ea5393dda 
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'"),
36    // Execution level 2 and 3 (profiled) nmethods
37    MethodProfiled(1, "CodeHeap 'profiled nmethods'"),
38    // Non-nmethods like Buffers, Adapters and Runtime Stubs
39    NonNMethod(2, "CodeHeap 'non-nmethods'") {
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");
48
49    public final int id;
50    private final String beanName;
51
52    private BlobType(int id, String beanName) {
53        this.id = id;
54        this.beanName = beanName;
55    }
56
57    public MemoryPoolMXBean getMemoryPool() {
58        for (MemoryPoolMXBean bean : ManagementFactory.getMemoryPoolMXBeans()) {
59            String name = bean.getName();
60            if (beanName.equals(name)) {
61                return bean;
62            }
63        }
64        return null;
65    }
66
67    public boolean allowTypeWhenOverflow(BlobType type) {
68        return type == this;
69    }
70
71    public static EnumSet<BlobType> getAvailable() {
72        WhiteBox whiteBox = WhiteBox.getWhiteBox();
73        if (!whiteBox.getBooleanVMFlag("SegmentedCodeCache")) {
74            // only All for non segmented world
75            return EnumSet.of(All);
76        }
77        if (System.getProperty("java.vm.info").startsWith("interpreted ")) {
78            // only NonNMethod for -Xint
79            return EnumSet.of(NonNMethod);
80        }
81
82        EnumSet<BlobType> result = EnumSet.complementOf(EnumSet.of(All));
83        if (!whiteBox.getBooleanVMFlag("TieredCompilation")
84                || whiteBox.getIntxVMFlag("TieredStopAtLevel") <= 1) {
85            // there is no MethodProfiled in non tiered world or pure C1
86            result.remove(MethodProfiled);
87        }
88        return result;
89    }
90}
91