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