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