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