1 /* |
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2 * Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 |
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24 /* |
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25 * @test LargeSharedSpace |
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26 * @bug 8168790 8169870 |
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27 * @summary Test CDS dumping using specific space size without crashing. |
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28 * The space size used in the test might not be suitable on windows. |
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29 * @requires (vm.opt.UseCompressedOops == null) | (vm.opt.UseCompressedOops == true) |
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30 * @requires (os.family != "windows") |
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31 * @library /test/lib |
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32 * @modules java.base/jdk.internal.misc |
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33 * java.management |
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34 * @run main LargeSharedSpace |
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35 */ |
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36 |
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37 import jdk.test.lib.cds.CDSTestUtils; |
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38 import jdk.test.lib.process.OutputAnalyzer; |
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39 import jdk.test.lib.Platform; |
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40 |
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41 public class LargeSharedSpace { |
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42 public static void main(String[] args) throws Exception { |
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43 OutputAnalyzer output; |
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44 |
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45 // Test case 1: -XX:SharedMiscCodeSize=1066924031 |
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46 // |
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47 // The archive should be dumped successfully. It might fail to reserve memory |
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48 // for shared space under low memory condition. The dumping process should not crash. |
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49 output = CDSTestUtils.createArchive("-XX:SharedMiscCodeSize=1066924031", |
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50 "-XX:+UnlockDiagnosticVMOptions"); |
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51 try { |
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52 output.shouldContain("Loading classes to share"); |
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53 } catch (RuntimeException e1) { |
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54 output.shouldContain("Unable to allocate memory for shared space"); |
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55 } |
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56 |
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57 // Test case 2: -XX:SharedMiscCodeSize=1600386047 |
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58 // |
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59 // On 64-bit platform, compressed class pointer is used. When the combined |
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60 // shared space size and the compressed space size is larger than the 4G |
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61 // compressed klass limit (0x100000000), error is reported. |
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62 // |
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63 // The dumping process should not crash. |
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64 if (Platform.is64bit()) { |
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65 CDSTestUtils.createArchive( |
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66 "-XX:+UseCompressedClassPointers", "-XX:CompressedClassSpaceSize=3G", |
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67 "-XX:SharedMiscCodeSize=1600386047") |
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68 .shouldContain("larger than compressed klass limit"); |
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69 } |
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70 |
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71 // Test case 3: -XX:SharedMiscCodeSize=1600386047 |
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72 // |
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73 // On 32-bit platform, compressed class pointer is not used. It may fail |
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74 // to reserve memory under low memory condition. |
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75 // |
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76 // The dumping process should not crash. |
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77 if (Platform.is32bit()) { |
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78 output = CDSTestUtils.createArchive("-XX:SharedMiscCodeSize=1600386047"); |
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79 try { |
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80 output.shouldContain("Loading classes to share"); |
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81 } catch (RuntimeException e3) { |
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82 output.shouldContain("Unable to allocate memory for shared space"); |
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83 } |
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84 } |
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85 } |
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86 } |
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