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