1 /*
2 * Copyright (c) 2014, 2015, 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 /*
25 * @test PoolsIndependenceTest
26 * @summary testing of getUsageThreshold()
27 * @modules java.base/jdk.internal.misc
28 * java.management
29 * @library /test/lib /
30 *
31 * @build sun.hotspot.WhiteBox
32 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
33 * sun.hotspot.WhiteBox$WhiteBoxPermission
34 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
35 * -XX:+WhiteBoxAPI -XX:-UseCodeCacheFlushing -XX:-MethodFlushing
36 * -XX:+SegmentedCodeCache
37 * compiler.codecache.jmx.PoolsIndependenceTest
38 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
39 * -XX:+WhiteBoxAPI -XX:-UseCodeCacheFlushing -XX:-MethodFlushing
40 * -XX:-SegmentedCodeCache
41 * compiler.codecache.jmx.PoolsIndependenceTest
42 */
43
44 package compiler.codecache.jmx;
45
46 import jdk.test.lib.Asserts;
47 import jdk.test.lib.Utils;
48 import sun.hotspot.code.BlobType;
49
50 import javax.management.ListenerNotFoundException;
51 import javax.management.Notification;
52 import javax.management.NotificationEmitter;
53 import javax.management.NotificationListener;
54 import java.lang.management.ManagementFactory;
55 import java.lang.management.MemoryNotificationInfo;
56 import java.lang.management.MemoryPoolMXBean;
57 import java.util.HashMap;
58 import java.util.Map;
59 import java.util.concurrent.atomic.AtomicInteger;
60
61 public class PoolsIndependenceTest implements NotificationListener {
62
63 private final Map<String, AtomicInteger> counters;
64 private final BlobType btype;
65 private volatile long lastEventTimestamp;
66
67 public PoolsIndependenceTest(BlobType btype) {
68 counters = new HashMap<>();
69 for (BlobType bt : BlobType.getAvailable()) {
70 counters.put(bt.getMemoryPool().getName(), new AtomicInteger(0));
71 }
72 this.btype = btype;
73 lastEventTimestamp = 0;
74 CodeCacheUtils.disableCollectionUsageThresholds();
75 }
76
77 public static void main(String[] args) {
78 for (BlobType bt : BlobType.getAvailable()) {
79 new PoolsIndependenceTest(bt).runTest();
80 }
81 }
82
83 protected void runTest() {
84 MemoryPoolMXBean bean = btype.getMemoryPool();
85 ((NotificationEmitter) ManagementFactory.getMemoryMXBean()).
86 addNotificationListener(this, null, null);
87 bean.setUsageThreshold(bean.getUsage().getUsed() + 1);
88 long beginTimestamp = System.currentTimeMillis();
89 CodeCacheUtils.WB.allocateCodeBlob(
90 CodeCacheUtils.ALLOCATION_SIZE, btype.id);
91 CodeCacheUtils.WB.fullGC();
92 /* waiting for expected event to be received plus double the time took
93 to receive expected event(for possible unexpected) and
94 plus 1 second in case expected event received (almost)immediately */
95 Utils.waitForCondition(() -> {
96 long currentTimestamp = System.currentTimeMillis();
97 int eventsCount
98 = counters.get(btype.getMemoryPool().getName()).get();
99 if (eventsCount > 0) {
100 if (eventsCount > 1) {
101 return true;
102 }
103 long timeLastEventTook
104 = beginTimestamp - lastEventTimestamp;
105 long timeoutValue
106 = 1000L + beginTimestamp + 3L * timeLastEventTook;
107 return currentTimestamp > timeoutValue;
108 }
109 return false;
110 });
111 for (BlobType bt : BlobType.getAvailable()) {
112 int expectedNotificationsAmount = bt.equals(btype) ? 1 : 0;
113 CodeCacheUtils.assertEQorGTE(btype, counters.get(bt.getMemoryPool().getName()).get(),
114 expectedNotificationsAmount, String.format("Unexpected "
115 + "amount of notifications for pool: %s",
116 bt.getMemoryPool().getName()));
117 }
118 try {
119 ((NotificationEmitter) ManagementFactory.getMemoryMXBean()).
120 removeNotificationListener(this);
121 } catch (ListenerNotFoundException ex) {
122 throw new AssertionError("Can't remove notification listener", ex);
123 }
124 System.out.printf("INFO: Scenario with %s finished%n", bean.getName());
125 }
126
127 @Override
128 public void handleNotification(Notification notification, Object handback) {
129 String nType = notification.getType();
130 String poolName
131 = CodeCacheUtils.getPoolNameFromNotification(notification);
132 // consider code cache events only
133 if (CodeCacheUtils.isAvailableCodeHeapPoolName(poolName)) {
134 Asserts.assertEQ(MemoryNotificationInfo.MEMORY_THRESHOLD_EXCEEDED,
135 nType, "Unexpected event received: " + nType);
136 // receiving events from available CodeCache-related beans only
137 if (counters.get(poolName) != null) {
138 counters.get(poolName).incrementAndGet();
139 lastEventTimestamp = System.currentTimeMillis();
140 }
141 }
142 }
143 }