Mercurial > hg > graal-jvmci-8
annotate test/gc_implementation/g1/TestNoEagerReclaimOfHumongousRegions.java @ 23569:f3f2f71d2dc8
8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
Summary: The crash was caused by a faulty eager humongous reclaim. The reason for reclaiming a live object was that the call to cleanupHRRS was done after dirtying cards and clearing the remembered sets for the humongous object. This could lead to one or many cards being missed.
Reviewed-by: tbenson, kbarrett, tschatzl
author | dbuck |
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date | Tue, 19 Jan 2016 18:16:40 +0000 |
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23569
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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1 /* |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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2 * Copyright (c) 2015, 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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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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4 * |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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5 * This code is free software; you can redistribute it and/or modify it |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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6 * under the terms of the GNU General Public License version 2 only, as |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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7 * published by the Free Software Foundation. |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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8 * |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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13 * accompanied this code). |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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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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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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18 * |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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20 * or visit www.oracle.com if you need additional information or have any |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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21 * questions. |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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22 */ |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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23 |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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24 /* |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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25 * @test TestNoEagerReclaimOfHumongousRegions |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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26 * @bug 8139424 |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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27 * @summary Test to check that a live humongous object is not eagerly reclaimed. This is a regression test for |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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28 * 8139424 and the test will crash if an eager reclaim occur. The test is not 100% deterministic and |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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29 * might pass even if there are problems in the code, but it will never crash unless there is a problem. |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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30 * @requires vm.gc=="G1" | vm.gc=="null" |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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31 * @key gc |
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32 * @library /testlibrary /testlibrary/whitebox |
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33 * @modules java.base/sun.misc |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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34 * @build TestNoEagerReclaimOfHumongousRegions |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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35 * @run main ClassFileInstaller sun.hotspot.WhiteBox |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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36 * sun.hotspot.WhiteBox$WhiteBoxPermission |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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37 * @run main/othervm -Xbootclasspath/a:. -XX:+PrintGC -XX:+UseG1GC -XX:MaxTenuringThreshold=0 -XX:G1RSetSparseRegionEntries=32 -XX:G1HeapRegionSize=1m -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:+UnlockExperimentalVMOptions -XX:+G1TraceEagerReclaimHumongousObjects TestNoEagerReclaimOfHumongousRegions |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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38 */ |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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39 |
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40 import java.util.LinkedList; |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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41 |
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42 import sun.hotspot.WhiteBox; |
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43 |
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44 public class TestNoEagerReclaimOfHumongousRegions { |
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45 // Helper class to keep reference to humongous byte[]. |
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8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
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46 static class LargeRef { |
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47 private byte[] _ref; |
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48 |
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49 LargeRef(byte[] ref) { |
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50 _ref = ref; |
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51 } |
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52 |
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53 byte[] ref() { return _ref; } |
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54 } |
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55 |
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56 static LargeRef humongous_reference_holder; |
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57 |
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58 public static void main(String[] args) throws InterruptedException{ |
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59 WhiteBox wb = WhiteBox.getWhiteBox(); |
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60 LinkedList<Object> garbageAndRefList = new LinkedList<Object>(); |
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61 // Creating a 1M large byte array. Since the test specifies the heap |
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62 // region size to be 1m this will be a humongous object. We then |
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63 // store a pointer to the array in the static object to keep it live |
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64 // during the whole test. |
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65 humongous_reference_holder = new LargeRef(new byte[1 * 1024 * 1024]); |
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66 |
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67 // Create some garbage and a reference to the humongous object each round. |
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68 for (int i = 0; i < 32; i++) { |
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69 garbageAndRefList.add(new byte[400*1000]); |
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70 garbageAndRefList.add(new LargeRef(humongous_reference_holder.ref())); |
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71 |
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72 // Promote to old, goal is to get rem-set entries for the humongous |
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73 // object from different regions. The test specifies MaxTenuringThreshold=0, |
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74 // this will make sure we get objects promoted to old at once. |
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75 wb.youngGC(); |
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76 } |
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77 // Clear the garbage and reference list. |
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78 garbageAndRefList.clear(); |
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79 |
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80 // Run a concurrent mark cycle to mark all references but the static one as dead. |
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81 wb.g1StartConcMarkCycle(); |
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82 while (wb.g1InConcurrentMark()) { |
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83 Thread.sleep(100); |
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84 } |
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85 |
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86 // Run a young collection to make sure humongous object still can't be eagerly reclaimed. |
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87 wb.youngGC(); |
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88 // Will crash/assert if humongous object has been reclaimed. |
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89 wb.fullGC(); |
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90 } |
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91 } |