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annotate src/share/vm/gc_implementation/concurrentMarkSweep/cmsOopClosures.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 4c1b88a53c74
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1 /*
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2 * Copyright (c) 2007, 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_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSOOPCLOSURES_INLINE_HPP
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26 #define SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSOOPCLOSURES_INLINE_HPP
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27
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28 #include "gc_implementation/concurrentMarkSweep/cmsOopClosures.hpp"
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29 #include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp"
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30 #include "oops/oop.inline.hpp"
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31
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32 // Trim our work_queue so its length is below max at return
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33 inline void Par_MarkRefsIntoAndScanClosure::trim_queue(uint max) {
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34 while (_work_queue->size() > max) {
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35 oop newOop;
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36 if (_work_queue->pop_local(newOop)) {
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37 assert(newOop->is_oop(), "Expected an oop");
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38 assert(_bit_map->isMarked((HeapWord*)newOop),
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39 "only grey objects on this stack");
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40 // iterate over the oops in this oop, marking and pushing
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41 // the ones in CMS heap (i.e. in _span).
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42 newOop->oop_iterate(&_par_pushAndMarkClosure);
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43 }
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44 }
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45 }
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46
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47 // CMSOopClosure and CMSoopsInGenClosure are duplicated,
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48 // until we get rid of OopsInGenClosure.
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49
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50 inline void CMSOopClosure::do_klass(Klass* k) { do_klass_nv(k); }
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51 inline void CMSOopsInGenClosure::do_klass(Klass* k) { do_klass_nv(k); }
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52
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53 inline void CMSOopClosure::do_klass_nv(Klass* k) {
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54 ClassLoaderData* cld = k->class_loader_data();
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55 do_class_loader_data(cld);
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56 }
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57 inline void CMSOopsInGenClosure::do_klass_nv(Klass* k) {
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58 ClassLoaderData* cld = k->class_loader_data();
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59 do_class_loader_data(cld);
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60 }
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61
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62 inline void CMSOopClosure::do_class_loader_data(ClassLoaderData* cld) {
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63 assert(_klass_closure._oop_closure == this, "Must be");
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64
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65 bool claim = true; // Must claim the class loader data before processing.
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66 cld->oops_do(_klass_closure._oop_closure, &_klass_closure, claim);
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67 }
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68 inline void CMSOopsInGenClosure::do_class_loader_data(ClassLoaderData* cld) {
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69 assert(_klass_closure._oop_closure == this, "Must be");
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70
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71 bool claim = true; // Must claim the class loader data before processing.
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72 cld->oops_do(_klass_closure._oop_closure, &_klass_closure, claim);
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73 }
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76 #endif // SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSOOPCLOSURES_INLINE_HPP