1 /*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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22 */
23
24 /* @test LimitSharedSizes
25 * @summary Test handling of limits on shared space size
26 * @requires (vm.opt.UseCompressedOops == null) | (vm.opt.UseCompressedOops == true)
27 * @library /test/lib /runtime/CommandLine/OptionsValidation/common
28 * @modules java.base/jdk.internal.misc
29 * java.management
30 * jdk.attach/sun.tools.attach
31 * @run main LimitSharedSizes
32 */
33
34 import jdk.test.lib.process.ProcessTools;
35 import jdk.test.lib.process.OutputAnalyzer;
36 import jdk.test.lib.Platform;
37 import optionsvalidation.JVMOptionsUtils;
38
39 public class LimitSharedSizes {
40 static enum Result {
41 OUT_OF_RANGE,
42 TOO_SMALL,
43 VALID,
44 VALID_ARCHIVE
45 }
46
47 static enum Region {
48 RO, RW, MD, MC
49 }
50
51 private static final boolean fitsRange(String name, String value) throws RuntimeException {
52 boolean fits = true;
53 try {
54 fits = JVMOptionsUtils.fitsRange(name, value);
55 } catch (Exception e) {
56 throw new RuntimeException(e.getMessage());
57 }
58 return fits;
59 }
60
61 private static class SharedSizeTestData {
62 public String optionName;
63 public String optionValue;
64 public Result optionResult;
65
66 public SharedSizeTestData(Region region, String value) {
67 optionName = "-XX:"+getName(region);
68 optionValue = value;
69 if (fitsRange(getName(region), value) == false) {
70 optionResult = Result.OUT_OF_RANGE;
71 } else {
72 optionResult = Result.TOO_SMALL;
73 }
74 }
75
76 public SharedSizeTestData(Region region, String value, Result result) {
77 optionName = "-XX:"+getName(region);
78 optionValue = value;
79 optionResult = result;
80 }
81
82 private String getName(Region region) {
83 String name;
84 switch (region) {
85 case RO:
86 name = "SharedReadOnlySize";
87 break;
88 case RW:
89 name = "SharedReadWriteSize";
90 break;
91 case MD:
92 name = "SharedMiscDataSize";
93 break;
94 case MC:
95 name = "SharedMiscCodeSize";
96 break;
97 default:
98 name = "Unknown";
99 break;
100 }
101 return name;
102 }
103
104 public Result getResult() {
105 return optionResult;
106 }
107 }
108
109 private static final SharedSizeTestData[] testTable = {
110 // Too small of a region size should not cause a vm crash.
111 // It should result in an error message either like the following #1:
112 // The shared miscellaneous code space is not large enough
113 // to preload requested classes. Use -XX:SharedMiscCodeSize=
114 // to increase the initial size of shared miscellaneous code space.
115 // or #2:
116 // The shared miscellaneous code space is outside the allowed range
117 new SharedSizeTestData(Region.RO, "4M"),
118 new SharedSizeTestData(Region.RW, "4M"),
119 new SharedSizeTestData(Region.MD, "50k"),
120 new SharedSizeTestData(Region.MC, "20k"),
121
122 // these values are larger than default ones, and should
123 // be acceptable and not cause failure
124 new SharedSizeTestData(Region.RO, "20M", Result.VALID),
125 new SharedSizeTestData(Region.RW, "20M", Result.VALID),
126 new SharedSizeTestData(Region.MD, "20M", Result.VALID),
127 new SharedSizeTestData(Region.MC, "20M", Result.VALID),
128
129 // test with sizes which just meet the minimum required sizes
130 // the following tests also attempt to use the shared archive
131 new SharedSizeTestData(Region.RO, Platform.is64bit() ? "10M":"9M", Result.VALID_ARCHIVE),
132 new SharedSizeTestData(Region.RW, Platform.is64bit() ? "12M":"7M", Result.VALID_ARCHIVE),
133 new SharedSizeTestData(Region.MD, Platform.is64bit() ? "4M":"2M", Result.VALID_ARCHIVE),
134 new SharedSizeTestData(Region.MC, "120k", Result.VALID_ARCHIVE),
135 };
136
137 public static void main(String[] args) throws Exception {
138 int counter = 0;
139 for (SharedSizeTestData td : testTable) {
140 String fileName = "LimitSharedSizes" + counter + ".jsa";
141 counter++;
142
143 String option = td.optionName + "=" + td.optionValue;
144 System.out.println("testing option number <" + counter + ">");
145 System.out.println("testing option <" + option + ">");
146
147 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
148 "-XX:+UnlockDiagnosticVMOptions",
149 "-XX:SharedArchiveFile=./" + fileName,
150 option,
151 "-Xshare:dump");
152
153 OutputAnalyzer output = new OutputAnalyzer(pb.start());
154
155 switch (td.getResult()) {
156 case VALID:
157 case VALID_ARCHIVE:
158 {
159 output.shouldNotContain("space is not large enough");
160 output.shouldHaveExitValue(0);
161
162 if (td.getResult() == Result.VALID_ARCHIVE) {
163 // try to use the archive
164 pb = ProcessTools.createJavaProcessBuilder(
165 "-XX:+UnlockDiagnosticVMOptions",
166 "-XX:SharedArchiveFile=./" + fileName,
167 "-XX:+PrintSharedArchiveAndExit",
168 "-version");
169
170 try {
171 output = new OutputAnalyzer(pb.start());
172 output.shouldContain("archive is valid");
173 } catch (RuntimeException e) {
174 // if sharing failed due to ASLR or similar reasons,
175 // check whether sharing was attempted at all (UseSharedSpaces)
176 if ((output.getOutput().contains("Unable to use shared archive") ||
177 output.getOutput().contains("Unable to map ReadOnly shared space at required address.") ||
178 output.getOutput().contains("Unable to map ReadWrite shared space at required address.") ||
179 output.getOutput().contains("Unable to reserve shared space at required address")) &&
180 output.getExitValue() == 1) {
181 System.out.println("Unable to use shared archive: test not executed; assumed passed");
182 continue;
183 }
184 }
185 output.shouldHaveExitValue(0);
186 }
187 }
188 break;
189 case TOO_SMALL:
190 {
191 output.shouldContain("space is not large enough");
192 output.shouldHaveExitValue(2);
193 }
194 break;
195 case OUT_OF_RANGE:
196 {
197 output.shouldContain("outside the allowed range");
198 output.shouldHaveExitValue(1);
199 }
200 break;
201 }
202 }
203 }
204 }