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1 /* |
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2 * Copyright (c) 2000, 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 #ifndef SHARE_VM_GC_SERIAL_MARKSWEEP_INLINE_HPP |
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26 #define SHARE_VM_GC_SERIAL_MARKSWEEP_INLINE_HPP |
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27 |
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28 #include "gc/serial/markSweep.hpp" |
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29 #include "memory/metaspaceShared.hpp" |
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30 #include "memory/universe.hpp" |
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31 #include "oops/markOop.inline.hpp" |
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32 #include "oops/oop.inline.hpp" |
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33 #if INCLUDE_ALL_GCS |
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34 #include "gc/g1/g1Allocator.inline.hpp" |
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35 #endif // INCLUDE_ALL_GCS |
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36 |
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37 inline bool MarkSweep::is_closed_archive_object(oop object) { |
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38 #if INCLUDE_ALL_GCS |
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39 return G1ArchiveAllocator::is_closed_archive_object(object); |
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40 #else |
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41 return false; |
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42 #endif |
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43 } |
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44 |
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45 inline bool MarkSweep::is_open_archive_object(oop object) { |
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46 #if INCLUDE_ALL_GCS |
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47 return G1ArchiveAllocator::is_open_archive_object(object); |
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48 #else |
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49 return false; |
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50 #endif |
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51 } |
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52 |
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53 inline bool MarkSweep::is_archive_object(oop object) { |
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54 #if INCLUDE_ALL_GCS |
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55 return G1ArchiveAllocator::is_archive_object(object); |
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56 #else |
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57 return false; |
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58 #endif |
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59 } |
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60 |
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61 inline int MarkSweep::adjust_pointers(oop obj) { |
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62 return obj->oop_iterate_size(&MarkSweep::adjust_pointer_closure); |
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63 } |
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64 |
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65 template <class T> inline void MarkSweep::adjust_pointer(T* p) { |
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66 T heap_oop = oopDesc::load_heap_oop(p); |
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67 if (!oopDesc::is_null(heap_oop)) { |
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68 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); |
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69 assert(Universe::heap()->is_in(obj), "should be in heap"); |
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70 |
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71 oop new_obj = oop(obj->mark()->decode_pointer()); |
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72 |
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73 assert(is_archive_object(obj) || // no forwarding of archive objects |
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74 new_obj != NULL || // is forwarding ptr? |
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75 obj->mark() == markOopDesc::prototype() || // not gc marked? |
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76 (UseBiasedLocking && obj->mark()->has_bias_pattern()), |
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77 // not gc marked? |
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78 "should be forwarded"); |
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79 |
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80 #ifndef PRODUCT |
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81 // open_archive objects are marked by GC. Their mark should |
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82 // not have forwarding ptr. |
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83 if (is_open_archive_object(obj)) { |
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84 assert(new_obj == NULL, "archive heap object has forwarding ptr"); |
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85 } |
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86 #endif |
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87 |
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88 if (new_obj != NULL) { |
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89 if (!is_closed_archive_object(obj)) { |
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90 assert(Universe::heap()->is_in_reserved(new_obj), |
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91 "should be in object space"); |
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92 oopDesc::encode_store_heap_oop_not_null(p, new_obj); |
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93 } |
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94 } |
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95 } |
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96 } |
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97 |
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98 #endif // SHARE_VM_GC_SERIAL_MARKSWEEP_INLINE_HPP |