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.
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 * @requires vm.opt.final.UseCompressedClassPointers
29 * @library /test/lib
30 * @modules java.base/jdk.internal.misc
31 * java.management
32 */
33
34 import jdk.test.lib.Platform;
35 import jdk.test.lib.process.ProcessTools;
36 import jdk.test.lib.process.OutputAnalyzer;
37
38 public class CompressedClassPointers {
39
40 public static void smallHeapTest() throws Exception {
41 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
42 "-XX:+UnlockDiagnosticVMOptions",
43 "-XX:SharedBaseAddress=8g",
44 "-Xmx128m",
45 "-Xlog:gc+metaspace=trace",
46 "-Xshare:off",
47 "-Xlog:cds=trace",
48 "-XX:+VerifyBeforeGC", "-version");
49 OutputAnalyzer output = new OutputAnalyzer(pb.start());
50 output.shouldContain("Narrow klass base: 0x0000000000000000");
51 output.shouldHaveExitValue(0);
52 }
53
54 public static void smallHeapTestWith3G() throws Exception {
55 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
56 "-XX:+UnlockDiagnosticVMOptions",
57 "-XX:CompressedClassSpaceSize=3g",
58 "-Xmx128m",
59 "-Xlog:gc+metaspace=trace",
60 "-Xshare:off",
61 "-Xlog:cds=trace",
62 "-XX:+VerifyBeforeGC", "-version");
63 OutputAnalyzer output = new OutputAnalyzer(pb.start());
64 output.shouldContain("Narrow klass base: 0x0000000000000000, Narrow klass shift: 3");
65 output.shouldHaveExitValue(0);
66 }
67
68 public static void largeHeapTest() throws Exception {
69 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
70 "-XX:+UnlockDiagnosticVMOptions",
71 "-Xmx30g",
72 "-XX:-UseAOT", // AOT explicitly set klass shift to 3.
73 "-Xlog:gc+metaspace=trace",
74 "-Xshare:off",
75 "-Xlog:cds=trace",
76 "-XX:+VerifyBeforeGC", "-version");
77 OutputAnalyzer output = new OutputAnalyzer(pb.start());
78 output.shouldNotContain("Narrow klass base: 0x0000000000000000");
79 output.shouldContain("Narrow klass shift: 0");
80 output.shouldHaveExitValue(0);
81 }
82
83 public static void largePagesTest() throws Exception {
84 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
85 "-XX:+UnlockDiagnosticVMOptions",
86 "-Xmx128m",
87 "-XX:+UseLargePages",
88 "-Xlog:gc+metaspace=trace",
89 "-XX:+VerifyBeforeGC", "-version");
90 OutputAnalyzer output = new OutputAnalyzer(pb.start());
91 output.shouldContain("Narrow klass base:");
92 output.shouldHaveExitValue(0);
93 }
94
95 public static void heapBaseMinAddressTest() throws Exception {
96 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
97 "-XX:HeapBaseMinAddress=1m",
98 "-Xlog:gc+heap+coops=debug",
99 "-version");
100 OutputAnalyzer output = new OutputAnalyzer(pb.start());
101 output.shouldContain("HeapBaseMinAddress must be at least");
102 output.shouldHaveExitValue(0);
103 }
104
105 public static void sharingTest() throws Exception {
106 // Test small heaps
107 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
108 "-XX:+UnlockDiagnosticVMOptions",
109 "-XX:SharedArchiveFile=./CompressedClassPointers.jsa",
110 "-Xmx128m",
111 "-XX:SharedBaseAddress=8g",
112 "-XX:+PrintCompressedOopsMode",
113 "-XX:+VerifyBeforeGC",
114 "-Xshare:dump");
115 OutputAnalyzer output = new OutputAnalyzer(pb.start());
116 if (output.firstMatch("Shared spaces are not supported in this VM") != null) {
117 return;
118 }
119 try {
120 output.shouldContain("Loading classes to share");
121 output.shouldHaveExitValue(0);
122
123 pb = ProcessTools.createJavaProcessBuilder(
124 "-XX:+UnlockDiagnosticVMOptions",
125 "-XX:SharedArchiveFile=./CompressedClassPointers.jsa",
126 "-Xmx128m",
127 "-XX:SharedBaseAddress=8g",
128 "-XX:+PrintCompressedOopsMode",
129 "-Xshare:on",
130 "-version");
131 output = new OutputAnalyzer(pb.start());
132 output.shouldContain("sharing");
133 output.shouldHaveExitValue(0);
134
135 } catch (RuntimeException e) {
136 output.shouldContain("Unable to use shared archive");
137 output.shouldHaveExitValue(1);
138 }
139 }
140
141 public static void main(String[] args) throws Exception {
142 if (!Platform.is64bit()) {
143 // Can't test this on 32 bit, just pass
144 System.out.println("Skipping test on 32bit");
145 return;
146 }
147 // Solaris 10 can't mmap compressed oops space without a base
148 if (Platform.isSolaris()) {
149 String name = System.getProperty("os.version");
150 if (name.equals("5.10")) {
151 System.out.println("Skipping test on Solaris 10");
152 return;
153 }
154 }
155 smallHeapTest();
156 smallHeapTestWith3G();
157 largeHeapTest();
158 largePagesTest();
159 heapBaseMinAddressTest();
160 sharingTest();
161 }
162 }