1 /*
2 * Copyright (c) 2013, 2020, 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 TestMetaspacePerfCountersSerial
41 * @bug 8014659
42 * @requires vm.gc.Serial
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:+UseSerialGC gc.metaspace.TestMetaspacePerfCounters
52 */
53
54 /* @test TestMetaspacePerfCountersParallel
55 * @bug 8014659
56 * @requires vm.gc.Parallel
57 * @library /test/lib /
58 * @summary Tests that performance counters for metaspace and compressed class
59 * space exists and works.
60 * @modules java.base/jdk.internal.misc
61 * java.compiler
62 * java.management/sun.management
63 * jdk.internal.jvmstat/sun.jvmstat.monitor
64 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:-UseCompressedClassPointers -XX:+UsePerfData -XX:+UseParallelGC gc.metaspace.TestMetaspacePerfCounters
65 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:+UsePerfData -XX:+UseParallelGC gc.metaspace.TestMetaspacePerfCounters
66 */
67
68 /* @test TestMetaspacePerfCountersG1
69 * @bug 8014659
70 * @requires vm.gc.G1
71 * @library /test/lib /
72 * @summary Tests that performance counters for metaspace and compressed class
73 * space exists and works.
74 * @modules java.base/jdk.internal.misc
75 * java.compiler
76 * java.management/sun.management
77 * jdk.internal.jvmstat/sun.jvmstat.monitor
78 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:-UseCompressedClassPointers -XX:+UsePerfData -XX:+UseG1GC gc.metaspace.TestMetaspacePerfCounters
79 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:+UsePerfData -XX:+UseG1GC gc.metaspace.TestMetaspacePerfCounters
80 */
81
82 /* @test TestMetaspacePerfCountersShenandoah
83 * @bug 8014659
84 * @requires vm.gc.Shenandoah
85 * @library /test/lib /
86 * @summary Tests that performance counters for metaspace and compressed class
87 * space exists and works.
88 * @modules java.base/jdk.internal.misc
89 * java.compiler
90 * java.management/sun.management
91 * jdk.internal.jvmstat/sun.jvmstat.monitor
92 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:-UseCompressedClassPointers -XX:+UsePerfData -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC gc.metaspace.TestMetaspacePerfCounters
93 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:+UsePerfData -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC gc.metaspace.TestMetaspacePerfCounters
94 */
95 public class TestMetaspacePerfCounters {
96 public static Class<?> fooClass = null;
97 private static final String[] counterNames = {"minCapacity", "maxCapacity", "capacity", "used"};
98 private static final List<GarbageCollectorMXBean> gcBeans = ManagementFactoryHelper.getGarbageCollectorMXBeans();
99
100 public static void main(String[] args) throws Exception {
101 String metaspace = "sun.gc.metaspace";
102 String ccs = "sun.gc.compressedclassspace";
103
104 checkPerfCounters(metaspace);
105
106 if (isUsingCompressedClassPointers()) {
107 checkPerfCounters(ccs);
108 checkUsedIncreasesWhenLoadingClass(ccs);
109 } else {
110 checkEmptyPerfCounters(ccs);
111 checkUsedIncreasesWhenLoadingClass(metaspace);
112 }
113 }
114
115 private static void checkPerfCounters(String ns) throws Exception {
116 long gcCountBefore;
117 long gcCountAfter;
118 long minCapacity;
119 long maxCapacity;
120 long capacity;
121 long used;
122
123 // The perf counter values are updated during GC and to be able to
124 // do the assertions below we need to ensure that the values are from
125 // the same GC cycle.
126 do {
127 gcCountBefore = currentGCCount();
128
129 minCapacity = getMinCapacity(ns);
130 maxCapacity = getMaxCapacity(ns);
131 capacity = getCapacity(ns);
132 used = getUsed(ns);
133
134 gcCountAfter = currentGCCount();
135 assertGTE(gcCountAfter, gcCountBefore);
136 } while(gcCountAfter > gcCountBefore);
137
138 assertGTE(minCapacity, 0L);
139 assertGTE(used, minCapacity);
140 assertGTE(capacity, used);
141 assertGTE(maxCapacity, capacity);
142 }
143
144 private static void checkEmptyPerfCounters(String ns) throws Exception {
145 for (PerfCounter counter : countersInNamespace(ns)) {
146 String msg = "Expected " + counter.getName() + " to equal 0";
147 assertEQ(counter.longValue(), 0L, msg);
148 }
149 }
150
151 private static void checkUsedIncreasesWhenLoadingClass(String ns) throws Exception {
152 // Need to ensure that used is up to date and that all unreachable
153 // classes are unloaded before doing this check.
154 System.gc();
155 long before = getUsed(ns);
156 fooClass = compileAndLoad("Foo", "public class Foo { }");
157 System.gc();
158 long after = getUsed(ns);
159
160 assertGT(after, before);
161 }
162
163 private static List<PerfCounter> countersInNamespace(String ns) throws Exception {
164 List<PerfCounter> counters = new ArrayList<>();
165 for (String name : counterNames) {
166 counters.add(PerfCounters.findByName(ns + "." + name));
167 }
168 return counters;
169 }
170
171 private static Class<?> compileAndLoad(String name, String source) throws Exception {
172 byte[] byteCode = InMemoryJavaCompiler.compile(name, source);
173 return ByteCodeLoader.load(name, byteCode);
174 }
175
176 private static boolean isUsingCompressedClassPointers() {
177 return Platform.is64bit() && !InputArguments.contains("-XX:-UseCompressedClassPointers") /*&& !InputArguments.contains("-XX:-UseCompactObjectHeaders") */;
178 }
179
180 private static long getMinCapacity(String ns) throws Exception {
181 return PerfCounters.findByName(ns + ".minCapacity").longValue();
182 }
183
184 private static long getCapacity(String ns) throws Exception {
185 return PerfCounters.findByName(ns + ".capacity").longValue();
186 }
187
188 private static long getMaxCapacity(String ns) throws Exception {
189 return PerfCounters.findByName(ns + ".maxCapacity").longValue();
190 }
191
192 private static long getUsed(String ns) throws Exception {
193 return PerfCounters.findByName(ns + ".used").longValue();
194 }
195
196 private static long currentGCCount() {
197 long gcCount = 0;
198 for (GarbageCollectorMXBean bean : gcBeans) {
199 gcCount += bean.getCollectionCount();
200 }
201 return gcCount;
202 }
203 }