1 /*
2 * Copyright (c) 2013, 2016, 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
26 * @bug 8024927
27 * @summary Testing address of compressed class pointer space as best as possible.
28 * @library /testlibrary
29 * @modules java.base/jdk.internal.misc
30 * java.management
31 */
32
33 import jdk.test.lib.*;
34
35 public class CompressedClassPointers {
36
37 public static void smallHeapTest() throws Exception {
38 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
39 "-XX:+UnlockDiagnosticVMOptions",
40 "-XX:SharedBaseAddress=8g",
41 "-Xmx128m",
42 "-Xlog:gc+metaspace=trace",
43 "-XX:+VerifyBeforeGC", "-version");
44 OutputAnalyzer output = new OutputAnalyzer(pb.start());
45 output.shouldContain("Narrow klass base: 0x0000000000000000");
46 output.shouldHaveExitValue(0);
47 }
48
49 public static void smallHeapTestWith3G() throws Exception {
50 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
51 "-XX:+UnlockDiagnosticVMOptions",
52 "-XX:CompressedClassSpaceSize=3g",
53 "-Xmx128m",
54 "-Xlog:gc+metaspace=trace",
55 "-XX:+VerifyBeforeGC", "-version");
56 OutputAnalyzer output = new OutputAnalyzer(pb.start());
57 output.shouldContain("Narrow klass base: 0x0000000000000000, Narrow klass shift: 3");
58 output.shouldHaveExitValue(0);
59 }
60
61 public static void largeHeapTest() throws Exception {
62 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
63 "-XX:+UnlockDiagnosticVMOptions",
64 "-Xmx30g",
65 "-Xlog:gc+metaspace=trace",
66 "-XX:+VerifyBeforeGC", "-version");
67 OutputAnalyzer output = new OutputAnalyzer(pb.start());
68 output.shouldNotContain("Narrow klass base: 0x0000000000000000");
69 output.shouldContain("Narrow klass shift: 0");
70 output.shouldHaveExitValue(0);
71 }
72
73 public static void largePagesTest() throws Exception {
74 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
75 "-XX:+UnlockDiagnosticVMOptions",
76 "-Xmx128m",
77 "-XX:+UseLargePages",
78 "-Xlog:gc+metaspace=trace",
79 "-XX:+VerifyBeforeGC", "-version");
80 OutputAnalyzer output = new OutputAnalyzer(pb.start());
81 output.shouldContain("Narrow klass base:");
82 output.shouldHaveExitValue(0);
83 }
84
85 public static void heapBaseMinAddressTest() throws Exception {
86 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
87 "-XX:HeapBaseMinAddress=1m",
88 "-Xlog:gc+heap+coops=debug",
89 "-version");
90 OutputAnalyzer output = new OutputAnalyzer(pb.start());
91 output.shouldContain("HeapBaseMinAddress must be at least");
92 output.shouldHaveExitValue(0);
93 }
94
95 public static void sharingTest() throws Exception {
96 // Test small heaps
97 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
98 "-XX:+UnlockDiagnosticVMOptions",
99 "-XX:SharedArchiveFile=./CompressedClassPointers.jsa",
100 "-Xmx128m",
101 "-XX:SharedBaseAddress=8g",
102 "-XX:+PrintCompressedOopsMode",
103 "-XX:+VerifyBeforeGC",
104 "-Xshare:dump");
105 OutputAnalyzer output = new OutputAnalyzer(pb.start());
106 try {
107 output.shouldContain("Loading classes to share");
108 output.shouldHaveExitValue(0);
109
110 pb = ProcessTools.createJavaProcessBuilder(
111 "-XX:+UnlockDiagnosticVMOptions",
112 "-XX:SharedArchiveFile=./CompressedClassPointers.jsa",
113 "-Xmx128m",
114 "-XX:SharedBaseAddress=8g",
115 "-XX:+PrintCompressedOopsMode",
116 "-Xshare:on",
117 "-version");
118 output = new OutputAnalyzer(pb.start());
119 output.shouldContain("sharing");
120 output.shouldHaveExitValue(0);
121
122 } catch (RuntimeException e) {
123 output.shouldContain("Unable to use shared archive");
124 output.shouldHaveExitValue(1);
125 }
126 }
127
128 public static void main(String[] args) throws Exception {
129 if (!Platform.is64bit()) {
130 // Can't test this on 32 bit, just pass
131 System.out.println("Skipping test on 32bit");
132 return;
133 }
134 // Solaris 10 can't mmap compressed oops space without a base
135 if (Platform.isSolaris()) {
136 String name = System.getProperty("os.version");
137 if (name.equals("5.10")) {
138 System.out.println("Skipping test on Solaris 10");
139 return;
140 }
141 }
142 smallHeapTest();
143 smallHeapTestWith3G();
144 largeHeapTest();
145 largePagesTest();
146 heapBaseMinAddressTest();
147 sharingTest();
148 }
149 }