1 /*
2 * Copyright (c) 2014, 2015, 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
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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.
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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
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22 */
23
24 /* @test LimitSharedSizes
25 * @summary Test handling of limits on shared space size
26 * @library /testlibrary
27 * @modules java.base/sun.misc
28 * java.management
29 * @run main LimitSharedSizes
30 */
31
32 import jdk.test.lib.*;
33
34 public class LimitSharedSizes {
35 static enum Region {
36 RO, RW, MD, MC
37 }
38
39 private static class SharedSizeTestData {
40 public String optionName;
41 public String optionValue;
42 public String expectedErrorMsg;
43
44 public SharedSizeTestData(Region region, String value, String msg) {
45 optionName = getName(region);
46 optionValue = value;
47 expectedErrorMsg = msg;
48 }
49
50 public SharedSizeTestData(Region region, String msg) {
51 optionName = getName(region);
52 optionValue = getValue(region);
53 expectedErrorMsg = msg;
54 }
55
56 private String getName(Region region) {
57 String name;
58 switch (region) {
59 case RO:
60 name = "-XX:SharedReadOnlySize";
61 break;
62 case RW:
63 name = "-XX:SharedReadWriteSize";
64 break;
65 case MD:
66 name = "-XX:SharedMiscDataSize";
67 break;
68 case MC:
69 name = "-XX:SharedMiscCodeSize";
70 break;
71 default:
72 name = "Unknown";
73 break;
74 }
75 return name;
76 }
77
78 private String getValue(Region region) {
79 String value;
80 switch (region) {
81 case RO:
82 value = Platform.is64bit() ? "9M" : "8M";
83 break;
84 case RW:
85 value = Platform.is64bit() ? "12M" : "7M";
86 break;
87 case MD:
88 value = Platform.is64bit() ? "4M" : "2M";
89 break;
90 case MC:
91 value = "120k";
92 break;
93 default:
94 value = "0M";
95 break;
96 }
97 return value;
98 }
99 }
100
101 private static final SharedSizeTestData[] testTable = {
102 // Too small of a region size should not cause a vm crash.
103 // It should result in an error message like the following:
104 // The shared miscellaneous code space is not large enough
105 // to preload requested classes. Use -XX:SharedMiscCodeSize=
106 // to increase the initial size of shared miscellaneous code space.
107 new SharedSizeTestData(Region.RO, "4M", "read only"),
108 new SharedSizeTestData(Region.RW, "4M", "read write"),
109 new SharedSizeTestData(Region.MD, "50k", "miscellaneous data"),
110 new SharedSizeTestData(Region.MC, "20k", "miscellaneous code"),
111
112 // these values are larger than default ones, but should
113 // be acceptable and not cause failure
114 new SharedSizeTestData(Region.RO, "20M", null),
115 new SharedSizeTestData(Region.RW, "20M", null),
116 new SharedSizeTestData(Region.MD, "20M", null),
117 new SharedSizeTestData(Region.MC, "20M", null),
118
119 // test with sizes which just meet the minimum required sizes
120 // the following tests also attempt to use the shared archive
121 new SharedSizeTestData(Region.RO, "UseArchive"),
122 new SharedSizeTestData(Region.RW, "UseArchive"),
123 new SharedSizeTestData(Region.MD, "UseArchive"),
124 new SharedSizeTestData(Region.MC, "UseArchive")
125 };
126
127 public static void main(String[] args) throws Exception {
128 int counter = 0;
129 for (SharedSizeTestData td : testTable) {
130 String fileName = "LimitSharedSizes" + counter + ".jsa";
131 counter++;
132
133 String option = td.optionName + "=" + td.optionValue;
134 System.out.println("testing option <" + option + ">");
135
136 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
137 "-XX:+UnlockDiagnosticVMOptions",
138 "-XX:SharedArchiveFile=./" + fileName,
139 option,
140 "-Xshare:dump");
141
142 OutputAnalyzer output = new OutputAnalyzer(pb.start());
143
144 if (td.expectedErrorMsg != null) {
145 if (!td.expectedErrorMsg.equals("UseArchive")) {
146 output.shouldContain("The shared " + td.expectedErrorMsg
147 + " space is not large enough");
148
149 output.shouldHaveExitValue(2);
150 } else {
151 output.shouldNotContain("space is not large enough");
152 output.shouldHaveExitValue(0);
153
154 // try to use the archive
155 pb = ProcessTools.createJavaProcessBuilder(
156 "-XX:+UnlockDiagnosticVMOptions",
157 "-XX:SharedArchiveFile=./" + fileName,
158 "-XX:+PrintSharedArchiveAndExit",
159 "-version");
160
161 try {
162 output = new OutputAnalyzer(pb.start());
163 output.shouldContain("archive is valid");
164 } catch (RuntimeException e) {
165 // if sharing failed due to ASLR or similar reasons,
166 // check whether sharing was attempted at all (UseSharedSpaces)
167 if ((output.getOutput().contains("Unable to use shared archive") ||
168 output.getOutput().contains("Unable to map ReadOnly shared space at required address.") ||
169 output.getOutput().contains("Unable to map ReadWrite shared space at required address.") ||
170 output.getOutput().contains("Unable to reserve shared space at required address")) &&
171 output.getExitValue() == 1) {
172 System.out.println("Unable to use shared archive: test not executed; assumed passed");
173 return;
174 }
175 }
176 output.shouldHaveExitValue(0);
177 }
178 } else {
179 output.shouldNotContain("space is not large enough");
180 output.shouldHaveExitValue(0);
181 }
182 }
183 }
184 }