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annotate src/share/vm/oops/objArrayKlass.inline.hpp @ 6725:da91efe96a93

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6964458: Reimplement class meta-data storage to use native memory Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author coleenp
date Sat, 01 Sep 2012 13:25:18 -0400
parents f95d63e2154a
children d8ce2825b193
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1 /*
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2 * Copyright (c) 2010, 2012, 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_OOPS_OBJARRAYKLASS_INLINE_HPP
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26 #define SHARE_VM_OOPS_OBJARRAYKLASS_INLINE_HPP
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27
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28 #include "gc_implementation/shared/markSweep.inline.hpp"
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29 #include "oops/objArrayKlass.hpp"
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30 #ifndef SERIALGC
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31 #include "gc_implementation/parallelScavenge/psCompactionManager.inline.hpp"
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32 #include "gc_implementation/parallelScavenge/psParallelCompact.hpp"
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33 #endif
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34
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35 void objArrayKlass::oop_follow_contents(oop obj, int index) {
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36 if (UseCompressedOops) {
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37 objarray_follow_contents<narrowOop>(obj, index);
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38 } else {
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39 objarray_follow_contents<oop>(obj, index);
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40 }
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41 }
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42
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43 template <class T>
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44 void objArrayKlass::objarray_follow_contents(oop obj, int index) {
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45 objArrayOop a = objArrayOop(obj);
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46 const size_t len = size_t(a->length());
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47 const size_t beg_index = size_t(index);
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48 assert(beg_index < len || len == 0, "index too large");
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49
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50 const size_t stride = MIN2(len - beg_index, ObjArrayMarkingStride);
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51 const size_t end_index = beg_index + stride;
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52 T* const base = (T*)a->base();
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53 T* const beg = base + beg_index;
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54 T* const end = base + end_index;
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55
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56 // Push the non-NULL elements of the next stride on the marking stack.
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57 for (T* e = beg; e < end; e++) {
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58 MarkSweep::mark_and_push<T>(e);
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59 }
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60
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61 if (end_index < len) {
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62 MarkSweep::push_objarray(a, end_index); // Push the continuation.
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63 }
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64 }
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65
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66 #ifndef SERIALGC
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67 void objArrayKlass::oop_follow_contents(ParCompactionManager* cm, oop obj,
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68 int index) {
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69 if (UseCompressedOops) {
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70 objarray_follow_contents<narrowOop>(cm, obj, index);
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71 } else {
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72 objarray_follow_contents<oop>(cm, obj, index);
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73 }
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74 }
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75
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76 template <class T>
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77 void objArrayKlass::objarray_follow_contents(ParCompactionManager* cm, oop obj,
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78 int index) {
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79 objArrayOop a = objArrayOop(obj);
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80 const size_t len = size_t(a->length());
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81 const size_t beg_index = size_t(index);
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82 assert(beg_index < len || len == 0, "index too large");
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83
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84 const size_t stride = MIN2(len - beg_index, ObjArrayMarkingStride);
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85 const size_t end_index = beg_index + stride;
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86 T* const base = (T*)a->base();
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87 T* const beg = base + beg_index;
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88 T* const end = base + end_index;
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89
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90 // Push the non-NULL elements of the next stride on the marking stack.
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91 for (T* e = beg; e < end; e++) {
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92 PSParallelCompact::mark_and_push<T>(cm, e);
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93 }
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94
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95 if (end_index < len) {
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96 cm->push_objarray(a, end_index); // Push the continuation.
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97 }
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98 }
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99 #endif // #ifndef SERIALGC
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100
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101 #endif // SHARE_VM_OOPS_OBJARRAYKLASS_INLINE_HPP