1 /*
2 * Copyright (c) 2013, 2019, 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 gc.metaspace;
25
26 import java.lang.management.GarbageCollectorMXBean;
27 import java.util.List;
28 import java.util.ArrayList;
29
30 import jdk.test.lib.ByteCodeLoader;
31 import jdk.test.lib.compiler.InMemoryJavaCompiler;
32 import jdk.test.lib.Platform;
33
34 import sun.management.ManagementFactoryHelper;
35
36 import static jdk.test.lib.Asserts.*;
37 import gc.testlibrary.PerfCounter;
38 import gc.testlibrary.PerfCounters;
39
40 /* @test TestMetaspacePerfCounters
41 * @bug 8014659
42 * @requires vm.gc=="null"
43 * @library /test/lib /
44 * @summary Tests that performance counters for metaspace and compressed class
45 * space exists and works.
46 * @modules java.base/jdk.internal.misc
47 * java.compiler
48 * java.management/sun.management
49 * jdk.internal.jvmstat/sun.jvmstat.monitor
50 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:-UseCompressedClassPointers -XX:+UsePerfData -XX:+UseSerialGC gc.metaspace.TestMetaspacePerfCounters
51 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:-UseCompressedClassPointers -XX:+UsePerfData -XX:+UseParallelGC -XX:+UseParallelOldGC gc.metaspace.TestMetaspacePerfCounters
52 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:-UseCompressedClassPointers -XX:+UsePerfData -XX:+UseG1GC gc.metaspace.TestMetaspacePerfCounters
53 *
54 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:+UsePerfData -XX:+UseSerialGC gc.metaspace.TestMetaspacePerfCounters
55 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:+UsePerfData -XX:+UseParallelGC -XX:+UseParallelOldGC gc.metaspace.TestMetaspacePerfCounters
56 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:+UsePerfData -XX:+UseG1GC gc.metaspace.TestMetaspacePerfCounters
57 */
58
59 /* @test TestMetaspacePerfCountersShenandoah
60 * @bug 8014659
61 * @requires vm.gc.Shenandoah
62 * @library /test/lib /
63 * @summary Tests that performance counters for metaspace and compressed class
64 * space exists and works.
65 * @modules java.base/jdk.internal.misc
66 * java.compiler
67 * java.management/sun.management
68 * jdk.internal.jvmstat/sun.jvmstat.monitor
69 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:-UseCompressedClassPointers -XX:+UsePerfData -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC gc.metaspace.TestMetaspacePerfCounters
70 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:+UsePerfData -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC gc.metaspace.TestMetaspacePerfCounters
71 */
72 public class TestMetaspacePerfCounters {
73 public static Class<?> fooClass = null;
74 private static final String[] counterNames = {"minCapacity", "maxCapacity", "capacity", "used"};
75 private static final List<GarbageCollectorMXBean> gcBeans = ManagementFactoryHelper.getGarbageCollectorMXBeans();
76
77 public static void main(String[] args) throws Exception {
78 String metaspace = "sun.gc.metaspace";
79 String ccs = "sun.gc.compressedclassspace";
80
81 checkPerfCounters(metaspace);
82
83 if (isUsingCompressedClassPointers()) {
84 checkPerfCounters(ccs);
85 checkUsedIncreasesWhenLoadingClass(ccs);
86 } else {
87 checkEmptyPerfCounters(ccs);
88 checkUsedIncreasesWhenLoadingClass(metaspace);
89 }
90 }
91
92 private static void checkPerfCounters(String ns) throws Exception {
93 long gcCountBefore;
94 long gcCountAfter;
95 long minCapacity;
96 long maxCapacity;
97 long capacity;
98 long used;
99
100 // The perf counter values are updated during GC and to be able to
101 // do the assertions below we need to ensure that the values are from
102 // the same GC cycle.
103 do {
104 gcCountBefore = currentGCCount();
105
106 minCapacity = getMinCapacity(ns);
107 maxCapacity = getMaxCapacity(ns);
108 capacity = getCapacity(ns);
109 used = getUsed(ns);
110
111 gcCountAfter = currentGCCount();
112 assertGTE(gcCountAfter, gcCountBefore);
113 } while(gcCountAfter > gcCountBefore);
114
115 assertGTE(minCapacity, 0L);
116 assertGTE(used, minCapacity);
117 assertGTE(capacity, used);
118 assertGTE(maxCapacity, capacity);
119 }
120
121 private static void checkEmptyPerfCounters(String ns) throws Exception {
122 for (PerfCounter counter : countersInNamespace(ns)) {
123 String msg = "Expected " + counter.getName() + " to equal 0";
124 assertEQ(counter.longValue(), 0L, msg);
125 }
126 }
127
128 private static void checkUsedIncreasesWhenLoadingClass(String ns) throws Exception {
129 // Need to ensure that used is up to date and that all unreachable
130 // classes are unloaded before doing this check.
131 System.gc();
132 long before = getUsed(ns);
133 fooClass = compileAndLoad("Foo", "public class Foo { }");
134 System.gc();
135 long after = getUsed(ns);
136
137 assertGT(after, before);
138 }
139
140 private static List<PerfCounter> countersInNamespace(String ns) throws Exception {
141 List<PerfCounter> counters = new ArrayList<>();
142 for (String name : counterNames) {
143 counters.add(PerfCounters.findByName(ns + "." + name));
144 }
145 return counters;
146 }
147
148 private static Class<?> compileAndLoad(String name, String source) throws Exception {
149 byte[] byteCode = InMemoryJavaCompiler.compile(name, source);
150 return ByteCodeLoader.load(name, byteCode);
151 }
152
153 private static boolean isUsingCompressedClassPointers() {
154 return Platform.is64bit() && InputArguments.contains("-XX:+UseCompressedClassPointers");
155 }
156
157 private static long getMinCapacity(String ns) throws Exception {
158 return PerfCounters.findByName(ns + ".minCapacity").longValue();
159 }
160
161 private static long getCapacity(String ns) throws Exception {
162 return PerfCounters.findByName(ns + ".capacity").longValue();
163 }
164
165 private static long getMaxCapacity(String ns) throws Exception {
166 return PerfCounters.findByName(ns + ".maxCapacity").longValue();
167 }
168
169 private static long getUsed(String ns) throws Exception {
170 return PerfCounters.findByName(ns + ".used").longValue();
171 }
172
173 private static long currentGCCount() {
174 long gcCount = 0;
175 for (GarbageCollectorMXBean bean : gcBeans) {
176 gcCount += bean.getCollectionCount();
177 }
178 return gcCount;
179 }
180 }