1 /*
2  * Copyright (c) 2013, 2018, 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.  Oracle designates this
8  * particular file as subject to the "Classpath" exception as provided
9  * by Oracle in the LICENSE file that accompanied this code.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
23  * questions.
24  */
25 
26 package jdk.jfr.event.compiler;
27 
28 import java.util.List;
29 
30 import jdk.jfr.Recording;
31 import jdk.jfr.consumer.RecordedEvent;
32 import jdk.test.lib.Asserts;
33 import jdk.test.lib.jfr.EventNames;
34 import jdk.test.lib.jfr.Events;
35 import sun.hotspot.WhiteBox;
36 import sun.hotspot.code.BlobType;
37 
38 /**
39  * @test TestCodeCacheFull
40  * @requires vm.hasJFR
41  *
42  * @library /test/lib
43  * @modules jdk.jfr
44  *          jdk.management.jfr
45  * @build sun.hotspot.WhiteBox
46  * @run main ClassFileInstaller sun.hotspot.WhiteBox sun.hotspot.WhiteBox$WhiteBoxPermission
47  *
48  * @run main/othervm -Xbootclasspath/a:.
49  *     -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
50  *     -XX:+SegmentedCodeCache -XX:-UseLargePages jdk.jfr.event.compiler.TestCodeCacheFull
51  * @run main/othervm -Xbootclasspath/a:.
52  *     -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
53  *     -XX:-SegmentedCodeCache jdk.jfr.event.compiler.TestCodeCacheFull
54  */
55 public class TestCodeCacheFull {
56 
main(String[] args)57     public static void main(String[] args) throws Exception {
58         for (BlobType btype : BlobType.getAvailable()) {
59             testWithBlobType(btype, calculateAvailableSize(btype));
60         }
61     }
62 
testWithBlobType(BlobType btype, long availableSize)63     private static void testWithBlobType(BlobType btype, long availableSize) throws Exception {
64         Recording r = new Recording();
65         r.enable(EventNames.CodeCacheFull);
66         r.start();
67         WhiteBox.getWhiteBox().allocateCodeBlob(availableSize, btype.id);
68         r.stop();
69 
70         List<RecordedEvent> events = Events.fromRecording(r);
71         Events.hasEvents(events);
72         RecordedEvent event = events.get(0);
73 
74         String codeBlobType = Events.assertField(event, "codeBlobType").notNull().getValue();
75         BlobType blobType = blobTypeFromName(codeBlobType);
76         Asserts.assertTrue(blobType.allowTypeWhenOverflow(blobType), "Unexpected overflow BlobType " + blobType.id);
77         Events.assertField(event, "entryCount").atLeast(0);
78         Events.assertField(event, "methodCount").atLeast(0);
79         Events.assertEventThread(event);
80         Events.assertField(event, "fullCount").atLeast(0);
81         Events.assertField(event, "startAddress").notEqual(0L);
82         Events.assertField(event, "commitedTopAddress").notEqual(0L);
83         Events.assertField(event, "reservedTopAddress").notEqual(0L);
84     }
85 
blobTypeFromName(String codeBlobTypeName)86     private static BlobType blobTypeFromName(String codeBlobTypeName) throws Exception {
87         for (BlobType t : BlobType.getAvailable()) {
88             if (t.beanName.equals(codeBlobTypeName)) {
89                 return t;
90             }
91         }
92         throw new Exception("Unexpected event " + codeBlobTypeName);
93     }
94 
95     // Compute the available size for this BlobType by taking into account
96     // that it may be stored in a different code heap in case it does not fit
97     // into the current one.
calculateAvailableSize(BlobType btype)98     private static long calculateAvailableSize(BlobType btype) {
99         long availableSize = btype.getSize();
100         for (BlobType alternative : BlobType.getAvailable()) {
101             if (btype.allowTypeWhenOverflow(alternative)) {
102                 availableSize = Math.max(availableSize, alternative.getSize());
103             }
104         }
105         return availableSize;
106     }
107 }
108