1 /*
2 * Copyright (c) 2013, 2020, 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 & os.family != "windows" & !vm.graal.enabled
29 * @library /test/lib
30 * @modules java.base/jdk.internal.misc
31 * java.management
32 * @run driver 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 smallHeapTestWith1G() throws Exception {
57 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
58 "-XX:+UnlockDiagnosticVMOptions",
59 "-XX:CompressedClassSpaceSize=1g",
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 "-XX:+UnlockExperimentalVMOptions",
74 "-Xmx30g",
75 "-XX:-UseAOT", // AOT explicitly set klass shift to 3.
76 "-Xlog:gc+metaspace=trace",
77 "-Xshare:off",
78 "-Xlog:cds=trace",
79 "-XX:+VerifyBeforeGC", "-version");
80 OutputAnalyzer output = new OutputAnalyzer(pb.start());
81 output.shouldNotContain("Narrow klass base: 0x0000000000000000");
82 output.shouldContain("Narrow klass shift: 0");
83 output.shouldHaveExitValue(0);
84 }
85
86 public static void largePagesTest() throws Exception {
87 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
88 "-XX:+UnlockDiagnosticVMOptions",
89 "-Xmx128m",
90 "-XX:+UseLargePages",
91 "-Xlog:gc+metaspace=trace",
92 "-XX:+VerifyBeforeGC", "-version");
93 OutputAnalyzer output = new OutputAnalyzer(pb.start());
94 output.shouldContain("Narrow klass base:");
95 output.shouldHaveExitValue(0);
96 }
97
98 public static void heapBaseMinAddressTest() throws Exception {
99 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
100 "-XX:HeapBaseMinAddress=1m",
101 "-Xlog:gc+heap+coops=debug",
102 "-version");
103 OutputAnalyzer output = new OutputAnalyzer(pb.start());
104 output.shouldContain("HeapBaseMinAddress must be at least");
105 output.shouldHaveExitValue(0);
106 }
107
108 public static void sharingTest() throws Exception {
109 // Test small heaps
110 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
111 "-XX:+UnlockDiagnosticVMOptions",
112 "-XX:SharedArchiveFile=./CompressedClassPointers.jsa",
113 "-Xmx128m",
114 "-XX:SharedBaseAddress=8g",
115 "-XX:+PrintCompressedOopsMode",
116 "-XX:+VerifyBeforeGC",
117 "-Xshare:dump", "-Xlog:cds");
118 OutputAnalyzer output = new OutputAnalyzer(pb.start());
119 if (output.firstMatch("Shared spaces are not supported in this VM") != null) {
120 return;
121 }
122 try {
123 output.shouldContain("Loading classes to share");
124 output.shouldHaveExitValue(0);
125
126 pb = ProcessTools.createJavaProcessBuilder(
127 "-XX:+UnlockDiagnosticVMOptions",
128 "-XX:SharedArchiveFile=./CompressedClassPointers.jsa",
129 "-Xmx128m",
130 "-XX:SharedBaseAddress=8g",
131 "-XX:+PrintCompressedOopsMode",
132 "-Xshare:on",
133 "-version");
134 output = new OutputAnalyzer(pb.start());
135 output.shouldContain("sharing");
136 output.shouldHaveExitValue(0);
137
138 } catch (RuntimeException e) {
139 output.shouldContain("Unable to use shared archive");
140 output.shouldHaveExitValue(1);
141 }
142 }
143
144 public static void smallHeapTestNoCoop() throws Exception {
145 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
146 "-XX:-UseCompressedOops",
147 "-XX:+UseCompressedClassPointers",
148 "-XX:+UnlockDiagnosticVMOptions",
149 "-XX:SharedBaseAddress=8g",
150 "-Xmx128m",
151 "-Xlog:gc+metaspace=trace",
152 "-Xshare:off",
153 "-Xlog:cds=trace",
154 "-XX:+VerifyBeforeGC", "-version");
155 OutputAnalyzer output = new OutputAnalyzer(pb.start());
156 output.shouldContain("Narrow klass base: 0x0000000000000000");
157 output.shouldHaveExitValue(0);
158 }
159
160 public static void smallHeapTestWith1GNoCoop() throws Exception {
161 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
162 "-XX:-UseCompressedOops",
163 "-XX:+UseCompressedClassPointers",
164 "-XX:+UnlockDiagnosticVMOptions",
165 "-XX:CompressedClassSpaceSize=1g",
166 "-Xmx128m",
167 "-Xlog:gc+metaspace=trace",
168 "-Xshare:off",
169 "-Xlog:cds=trace",
170 "-XX:+VerifyBeforeGC", "-version");
171 OutputAnalyzer output = new OutputAnalyzer(pb.start());
172 output.shouldContain("Narrow klass base: 0x0000000000000000");
173 output.shouldContain("Narrow klass shift: 0");
174 output.shouldHaveExitValue(0);
175 }
176
177 public static void largeHeapTestNoCoop() throws Exception {
178 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
179 "-XX:-UseCompressedOops",
180 "-XX:+UseCompressedClassPointers",
181 "-XX:+UnlockDiagnosticVMOptions",
182 "-XX:+UnlockExperimentalVMOptions",
183 "-Xmx30g",
184 "-XX:-UseAOT", // AOT explicitly set klass shift to 3.
185 "-Xlog:gc+metaspace=trace",
186 "-Xshare:off",
187 "-Xlog:cds=trace",
188 "-XX:+VerifyBeforeGC", "-version");
189 OutputAnalyzer output = new OutputAnalyzer(pb.start());
190 output.shouldContain("Narrow klass base: 0x0000000000000000");
191 output.shouldContain("Narrow klass shift: 0");
192 output.shouldHaveExitValue(0);
193 }
194
195 public static void largePagesTestNoCoop() throws Exception {
196 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
197 "-XX:-UseCompressedOops",
198 "-XX:+UseCompressedClassPointers",
199 "-XX:+UnlockDiagnosticVMOptions",
200 "-Xmx128m",
201 "-XX:+UseLargePages",
202 "-Xlog:gc+metaspace=trace",
203 "-XX:+VerifyBeforeGC", "-version");
204 OutputAnalyzer output = new OutputAnalyzer(pb.start());
205 output.shouldContain("Narrow klass base:");
206 output.shouldHaveExitValue(0);
207 }
208
209 public static void heapBaseMinAddressTestNoCoop() throws Exception {
210 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
211 "-XX:-UseCompressedOops",
212 "-XX:+UseCompressedClassPointers",
213 "-XX:HeapBaseMinAddress=1m",
214 "-Xlog:gc+heap+coops=debug",
215 "-version");
216 OutputAnalyzer output = new OutputAnalyzer(pb.start());
217 output.shouldContain("HeapBaseMinAddress must be at least");
218 output.shouldHaveExitValue(0);
219 }
220
221 public static void sharingTestNoCoop() throws Exception {
222 // Test small heaps
223 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
224 "-XX:-UseCompressedOops",
225 "-XX:+UseCompressedClassPointers",
226 "-XX:+UnlockDiagnosticVMOptions",
227 "-XX:SharedArchiveFile=./CompressedClassPointers.jsa",
228 "-Xmx128m",
229 "-XX:SharedBaseAddress=8g",
230 "-XX:+PrintCompressedOopsMode",
231 "-XX:+VerifyBeforeGC",
232 "-Xshare:dump", "-Xlog:cds");
233 OutputAnalyzer output = new OutputAnalyzer(pb.start());
234 if (output.firstMatch("Shared spaces are not supported in this VM") != null) {
235 return;
236 }
237 try {
238 output.shouldContain("Loading classes to share");
239 output.shouldHaveExitValue(0);
240
241 pb = ProcessTools.createJavaProcessBuilder(
242 "-XX:-UseCompressedOops",
243 "-XX:+UseCompressedClassPointers",
244 "-XX:+UnlockDiagnosticVMOptions",
245 "-XX:SharedArchiveFile=./CompressedClassPointers.jsa",
246 "-Xmx128m",
247 "-XX:SharedBaseAddress=8g",
248 "-XX:+PrintCompressedOopsMode",
249 "-Xshare:on",
250 "-version");
251 output = new OutputAnalyzer(pb.start());
252 output.shouldContain("sharing");
253 output.shouldHaveExitValue(0);
254
255 } catch (RuntimeException e) {
256 output.shouldContain("Unable to use shared archive");
257 output.shouldHaveExitValue(1);
258 }
259 }
260
261 public static void main(String[] args) throws Exception {
262 if (Platform.isSolaris()) {
263 String name = System.getProperty("os.version");
264 if (name.equals("5.10")) {
265 throw new SkippedException("Solaris 10 can't mmap compressed oops space without a base");
266 }
267 }
268 smallHeapTest();
269 smallHeapTestWith1G();
270 largeHeapTest();
271 largePagesTest();
272 heapBaseMinAddressTest();
273 sharingTest();
274
275 boolean ccpRequiresCoop = Platform.isAArch64() || Platform.isSparc();
276
277 if (!ccpRequiresCoop && !Platform.isOSX()) {
278 // Testing compressed class pointers without compressed oops.
279 // This is only possible if the platform supports it. Notably,
280 // on macOS, when compressed oops is disabled and the heap is
281 // given an arbitrary address, that address occasionally collides
282 // with where we would ideally have placed the compressed class
283 // space. Therefore, macOS is omitted for now.
284 smallHeapTestNoCoop();
285 smallHeapTestWith1GNoCoop();
286 largeHeapTestNoCoop();
287 largePagesTestNoCoop();
288 heapBaseMinAddressTestNoCoop();
289 sharingTestNoCoop();
290 }
291 }
292 }