truffle: src/share/vm/gc_implementation/concurrentMarkSweep/cmsOopClosures.hpp annotate

annotate src/share/vm/gc_implementation/concurrentMarkSweep/cmsOopClosures.hpp @ 6725:da91efe96a93

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	ca9dedeebdec

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	2 * Copyright (c) 2007, 2012, Oracle and/or its affiliates. All rights reserved.
0 a61af66fc99e Initial load duke parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
a61af66fc99e Initial load duke parents: diff changeset	4 *
a61af66fc99e Initial load duke parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
a61af66fc99e Initial load duke parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
a61af66fc99e Initial load duke parents: diff changeset	7 * published by the Free Software Foundation.
a61af66fc99e Initial load duke parents: diff changeset	8 *
a61af66fc99e Initial load duke parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
a61af66fc99e Initial load duke parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a61af66fc99e Initial load duke parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a61af66fc99e Initial load duke parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
a61af66fc99e Initial load duke parents: diff changeset	13 * accompanied this code).
a61af66fc99e Initial load duke parents: diff changeset	14 *
a61af66fc99e Initial load duke parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
a61af66fc99e Initial load duke parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
a61af66fc99e Initial load duke parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
a61af66fc99e Initial load duke parents: diff changeset	18 *
1552 c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 994 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 994 diff changeset	20 * or visit www.oracle.com if you need additional information or have any
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 994 diff changeset	21 * questions.
0 a61af66fc99e Initial load duke parents: diff changeset	22 *
a61af66fc99e Initial load duke parents: diff changeset	23 */
a61af66fc99e Initial load duke parents: diff changeset	24
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	25 #ifndef SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSOOPCLOSURES_HPP
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	26 #define SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSOOPCLOSURES_HPP
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	27
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	28 #include "memory/genOopClosures.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	29
0 a61af66fc99e Initial load duke parents: diff changeset	30 /////////////////////////////////////////////////////////////////
a61af66fc99e Initial load duke parents: diff changeset	31 // Closures used by ConcurrentMarkSweepGeneration's collector
a61af66fc99e Initial load duke parents: diff changeset	32 /////////////////////////////////////////////////////////////////
a61af66fc99e Initial load duke parents: diff changeset	33 class ConcurrentMarkSweepGeneration;
a61af66fc99e Initial load duke parents: diff changeset	34 class CMSBitMap;
a61af66fc99e Initial load duke parents: diff changeset	35 class CMSMarkStack;
a61af66fc99e Initial load duke parents: diff changeset	36 class CMSCollector;
a61af66fc99e Initial load duke parents: diff changeset	37 class MarkFromRootsClosure;
a61af66fc99e Initial load duke parents: diff changeset	38 class Par_MarkFromRootsClosure;
a61af66fc99e Initial load duke parents: diff changeset	39
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	40 // Decode the oop and call do_oop on it.
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	41 #define DO_OOP_WORK_DEFN \
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	42 void do_oop(oop obj); \
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	43 template <class T> inline void do_oop_work(T* p) { \
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	44 T heap_oop = oopDesc::load_heap_oop(p); \
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	45 if (!oopDesc::is_null(heap_oop)) { \
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	46 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); \
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	47 do_oop(obj); \
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	48 } \
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	49 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	50
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	51 // Applies the given oop closure to all oops in all klasses visited.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	52 class CMKlassClosure : public KlassClosure {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	53 friend class CMSOopClosure;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	54 friend class CMSOopsInGenClosure;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	55
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	56 OopClosure* _oop_closure;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	57
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	58 // Used when _oop_closure couldn't be set in an initialization list.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	59 void initialize(OopClosure* oop_closure) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	60 assert(_oop_closure == NULL, "Should only be called once");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	61 _oop_closure = oop_closure;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	62 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	63 public:
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	64 CMKlassClosure(OopClosure* oop_closure = NULL) : _oop_closure(oop_closure) { }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	65
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	66 void do_klass(Klass* k);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	67 };
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	68
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	69 // The base class for all CMS marking closures.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	70 // It's used to proxy through the metadata to the oops defined in them.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	71 class CMSOopClosure: public ExtendedOopClosure {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	72 CMKlassClosure _klass_closure;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	73 public:
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	74 CMSOopClosure() : ExtendedOopClosure() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	75 _klass_closure.initialize(this);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	76 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	77 CMSOopClosure(ReferenceProcessor* rp) : ExtendedOopClosure(rp) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	78 _klass_closure.initialize(this);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	79 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	80
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	81 virtual bool do_metadata() { return do_metadata_nv(); }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	82 inline bool do_metadata_nv() { return true; }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	83
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	84 virtual void do_klass(Klass* k);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	85 void do_klass_nv(Klass* k);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	86
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	87 virtual void do_class_loader_data(ClassLoaderData* cld);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	88 };
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	89
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	90 // TODO: This duplication of the CMSOopClosure class is only needed because
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	91 // some CMS OopClosures derive from OopsInGenClosure. It would be good
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	92 // to get rid of them completely.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	93 class CMSOopsInGenClosure: public OopsInGenClosure {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	94 CMKlassClosure _klass_closure;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	95 public:
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	96 CMSOopsInGenClosure() {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	97 _klass_closure.initialize(this);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	98 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	99
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	100 virtual bool do_metadata() { return do_metadata_nv(); }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	101 inline bool do_metadata_nv() { return true; }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	102
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	103 virtual void do_klass(Klass* k);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	104 void do_klass_nv(Klass* k);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	105
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	106 virtual void do_class_loader_data(ClassLoaderData* cld);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	107 };
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	108
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	109 class MarkRefsIntoClosure: public CMSOopsInGenClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	110 private:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	111 const MemRegion _span;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	112 CMSBitMap* _bitMap;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	113 protected:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	114 DO_OOP_WORK_DEFN
0 a61af66fc99e Initial load duke parents: diff changeset	115 public:
994 753cf9794df9 6885169: merge of 4957990 and 6863023 causes conflict on do_nmethods jrose parents: 993 diff changeset	116 MarkRefsIntoClosure(MemRegion span, CMSBitMap* bitMap);
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	117 virtual void do_oop(oop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	118 virtual void do_oop(narrowOop* p);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	119
0 a61af66fc99e Initial load duke parents: diff changeset	120 Prefetch::style prefetch_style() {
a61af66fc99e Initial load duke parents: diff changeset	121 return Prefetch::do_read;
a61af66fc99e Initial load duke parents: diff changeset	122 }
a61af66fc99e Initial load duke parents: diff changeset	123 };
a61af66fc99e Initial load duke parents: diff changeset	124
a61af66fc99e Initial load duke parents: diff changeset	125 // A variant of the above used in certain kinds of CMS
a61af66fc99e Initial load duke parents: diff changeset	126 // marking verification.
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	127 class MarkRefsIntoVerifyClosure: public CMSOopsInGenClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	128 private:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	129 const MemRegion _span;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	130 CMSBitMap* _verification_bm;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	131 CMSBitMap* _cms_bm;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	132 protected:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	133 DO_OOP_WORK_DEFN
0 a61af66fc99e Initial load duke parents: diff changeset	134 public:
a61af66fc99e Initial load duke parents: diff changeset	135 MarkRefsIntoVerifyClosure(MemRegion span, CMSBitMap* verification_bm,
994 753cf9794df9 6885169: merge of 4957990 and 6863023 causes conflict on do_nmethods jrose parents: 993 diff changeset	136 CMSBitMap* cms_bm);
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	137 virtual void do_oop(oop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	138 virtual void do_oop(narrowOop* p);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	139
0 a61af66fc99e Initial load duke parents: diff changeset	140 Prefetch::style prefetch_style() {
a61af66fc99e Initial load duke parents: diff changeset	141 return Prefetch::do_read;
a61af66fc99e Initial load duke parents: diff changeset	142 }
a61af66fc99e Initial load duke parents: diff changeset	143 };
a61af66fc99e Initial load duke parents: diff changeset	144
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	145 // The non-parallel version (the parallel version appears further below).
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	146 class PushAndMarkClosure: public CMSOopClosure {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	147 private:
935 05f89f00a864 6798898: CMS: bugs related to class unloading jmasa parents: 452 diff changeset	148 CMSCollector* _collector;
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	149 MemRegion _span;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	150 CMSBitMap* _bit_map;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	151 CMSBitMap* _mod_union_table;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	152 CMSMarkStack* _mark_stack;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	153 bool _concurrent_precleaning;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	154 protected:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	155 DO_OOP_WORK_DEFN
0 a61af66fc99e Initial load duke parents: diff changeset	156 public:
a61af66fc99e Initial load duke parents: diff changeset	157 PushAndMarkClosure(CMSCollector* collector,
a61af66fc99e Initial load duke parents: diff changeset	158 MemRegion span,
a61af66fc99e Initial load duke parents: diff changeset	159 ReferenceProcessor* rp,
a61af66fc99e Initial load duke parents: diff changeset	160 CMSBitMap* bit_map,
a61af66fc99e Initial load duke parents: diff changeset	161 CMSBitMap* mod_union_table,
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	162 CMSMarkStack* mark_stack,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	163 bool concurrent_precleaning);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	164 virtual void do_oop(oop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	165 virtual void do_oop(narrowOop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	166 inline void do_oop_nv(oop* p) { PushAndMarkClosure::do_oop_work(p); }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	167 inline void do_oop_nv(narrowOop* p) { PushAndMarkClosure::do_oop_work(p); }
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	168
0 a61af66fc99e Initial load duke parents: diff changeset	169 Prefetch::style prefetch_style() {
a61af66fc99e Initial load duke parents: diff changeset	170 return Prefetch::do_read;
a61af66fc99e Initial load duke parents: diff changeset	171 }
a61af66fc99e Initial load duke parents: diff changeset	172 };
a61af66fc99e Initial load duke parents: diff changeset	173
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	174 // In the parallel case, the bit map and the
0 a61af66fc99e Initial load duke parents: diff changeset	175 // reference processor are currently all shared. Access to
a61af66fc99e Initial load duke parents: diff changeset	176 // these shared mutable structures must use appropriate
a61af66fc99e Initial load duke parents: diff changeset	177 // synchronization (for instance, via CAS). The marking stack
a61af66fc99e Initial load duke parents: diff changeset	178 // used in the non-parallel case above is here replaced with
a61af66fc99e Initial load duke parents: diff changeset	179 // an OopTaskQueue structure to allow efficient work stealing.
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	180 class Par_PushAndMarkClosure: public CMSOopClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	181 private:
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	182 CMSCollector* _collector;
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	183 MemRegion _span;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	184 CMSBitMap* _bit_map;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	185 OopTaskQueue* _work_queue;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	186 protected:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	187 DO_OOP_WORK_DEFN
0 a61af66fc99e Initial load duke parents: diff changeset	188 public:
a61af66fc99e Initial load duke parents: diff changeset	189 Par_PushAndMarkClosure(CMSCollector* collector,
a61af66fc99e Initial load duke parents: diff changeset	190 MemRegion span,
a61af66fc99e Initial load duke parents: diff changeset	191 ReferenceProcessor* rp,
a61af66fc99e Initial load duke parents: diff changeset	192 CMSBitMap* bit_map,
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	193 OopTaskQueue* work_queue);
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	194 virtual void do_oop(oop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	195 virtual void do_oop(narrowOop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	196 inline void do_oop_nv(oop* p) { Par_PushAndMarkClosure::do_oop_work(p); }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	197 inline void do_oop_nv(narrowOop* p) { Par_PushAndMarkClosure::do_oop_work(p); }
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	198
0 a61af66fc99e Initial load duke parents: diff changeset	199 Prefetch::style prefetch_style() {
a61af66fc99e Initial load duke parents: diff changeset	200 return Prefetch::do_read;
a61af66fc99e Initial load duke parents: diff changeset	201 }
a61af66fc99e Initial load duke parents: diff changeset	202 };
a61af66fc99e Initial load duke parents: diff changeset	203
a61af66fc99e Initial load duke parents: diff changeset	204 // The non-parallel version (the parallel version appears further below).
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	205 class MarkRefsIntoAndScanClosure: public CMSOopsInGenClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	206 private:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	207 MemRegion _span;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	208 CMSBitMap* _bit_map;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	209 CMSMarkStack* _mark_stack;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	210 PushAndMarkClosure _pushAndMarkClosure;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	211 CMSCollector* _collector;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	212 Mutex* _freelistLock;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	213 bool _yield;
0 a61af66fc99e Initial load duke parents: diff changeset	214 // Whether closure is being used for concurrent precleaning
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	215 bool _concurrent_precleaning;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	216 protected:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	217 DO_OOP_WORK_DEFN
0 a61af66fc99e Initial load duke parents: diff changeset	218 public:
a61af66fc99e Initial load duke parents: diff changeset	219 MarkRefsIntoAndScanClosure(MemRegion span,
a61af66fc99e Initial load duke parents: diff changeset	220 ReferenceProcessor* rp,
a61af66fc99e Initial load duke parents: diff changeset	221 CMSBitMap* bit_map,
a61af66fc99e Initial load duke parents: diff changeset	222 CMSBitMap* mod_union_table,
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	223 CMSMarkStack* mark_stack,
0 a61af66fc99e Initial load duke parents: diff changeset	224 CMSCollector* collector,
a61af66fc99e Initial load duke parents: diff changeset	225 bool should_yield,
a61af66fc99e Initial load duke parents: diff changeset	226 bool concurrent_precleaning);
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	227 virtual void do_oop(oop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	228 virtual void do_oop(narrowOop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	229 inline void do_oop_nv(oop* p) { MarkRefsIntoAndScanClosure::do_oop_work(p); }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	230 inline void do_oop_nv(narrowOop* p) { MarkRefsIntoAndScanClosure::do_oop_work(p); }
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	231
0 a61af66fc99e Initial load duke parents: diff changeset	232 Prefetch::style prefetch_style() {
a61af66fc99e Initial load duke parents: diff changeset	233 return Prefetch::do_read;
a61af66fc99e Initial load duke parents: diff changeset	234 }
a61af66fc99e Initial load duke parents: diff changeset	235 void set_freelistLock(Mutex* m) {
a61af66fc99e Initial load duke parents: diff changeset	236 _freelistLock = m;
a61af66fc99e Initial load duke parents: diff changeset	237 }
a61af66fc99e Initial load duke parents: diff changeset	238
a61af66fc99e Initial load duke parents: diff changeset	239 private:
a61af66fc99e Initial load duke parents: diff changeset	240 inline void do_yield_check();
a61af66fc99e Initial load duke parents: diff changeset	241 void do_yield_work();
a61af66fc99e Initial load duke parents: diff changeset	242 bool take_from_overflow_list();
a61af66fc99e Initial load duke parents: diff changeset	243 };
a61af66fc99e Initial load duke parents: diff changeset	244
a61af66fc99e Initial load duke parents: diff changeset	245 // Tn this, the parallel avatar of MarkRefsIntoAndScanClosure, the revisit
a61af66fc99e Initial load duke parents: diff changeset	246 // stack and the bitMap are shared, so access needs to be suitably
a61af66fc99e Initial load duke parents: diff changeset	247 // sycnhronized. An OopTaskQueue structure, supporting efficient
a61af66fc99e Initial load duke parents: diff changeset	248 // workstealing, replaces a CMSMarkStack for storing grey objects.
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	249 class Par_MarkRefsIntoAndScanClosure: public CMSOopsInGenClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	250 private:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	251 MemRegion _span;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	252 CMSBitMap* _bit_map;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	253 OopTaskQueue* _work_queue;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	254 const uint _low_water_mark;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	255 Par_PushAndMarkClosure _par_pushAndMarkClosure;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	256 protected:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	257 DO_OOP_WORK_DEFN
0 a61af66fc99e Initial load duke parents: diff changeset	258 public:
a61af66fc99e Initial load duke parents: diff changeset	259 Par_MarkRefsIntoAndScanClosure(CMSCollector* collector,
a61af66fc99e Initial load duke parents: diff changeset	260 MemRegion span,
a61af66fc99e Initial load duke parents: diff changeset	261 ReferenceProcessor* rp,
a61af66fc99e Initial load duke parents: diff changeset	262 CMSBitMap* bit_map,
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	263 OopTaskQueue* work_queue);
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	264 virtual void do_oop(oop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	265 virtual void do_oop(narrowOop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	266 inline void do_oop_nv(oop* p) { Par_MarkRefsIntoAndScanClosure::do_oop_work(p); }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	267 inline void do_oop_nv(narrowOop* p) { Par_MarkRefsIntoAndScanClosure::do_oop_work(p); }
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	268
0 a61af66fc99e Initial load duke parents: diff changeset	269 Prefetch::style prefetch_style() {
a61af66fc99e Initial load duke parents: diff changeset	270 return Prefetch::do_read;
a61af66fc99e Initial load duke parents: diff changeset	271 }
a61af66fc99e Initial load duke parents: diff changeset	272 void trim_queue(uint size);
a61af66fc99e Initial load duke parents: diff changeset	273 };
a61af66fc99e Initial load duke parents: diff changeset	274
a61af66fc99e Initial load duke parents: diff changeset	275 // This closure is used during the concurrent marking phase
a61af66fc99e Initial load duke parents: diff changeset	276 // following the first checkpoint. Its use is buried in
a61af66fc99e Initial load duke parents: diff changeset	277 // the closure MarkFromRootsClosure.
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	278 class PushOrMarkClosure: public CMSOopClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	279 private:
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	280 CMSCollector* _collector;
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	281 MemRegion _span;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	282 CMSBitMap* _bitMap;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	283 CMSMarkStack* _markStack;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	284 HeapWord* const _finger;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	285 MarkFromRootsClosure* const
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	286 _parent;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	287 protected:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	288 DO_OOP_WORK_DEFN
0 a61af66fc99e Initial load duke parents: diff changeset	289 public:
a61af66fc99e Initial load duke parents: diff changeset	290 PushOrMarkClosure(CMSCollector* cms_collector,
a61af66fc99e Initial load duke parents: diff changeset	291 MemRegion span,
a61af66fc99e Initial load duke parents: diff changeset	292 CMSBitMap* bitMap,
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	293 CMSMarkStack* markStack,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	294 HeapWord* finger,
0 a61af66fc99e Initial load duke parents: diff changeset	295 MarkFromRootsClosure* parent);
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	296 virtual void do_oop(oop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	297 virtual void do_oop(narrowOop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	298 inline void do_oop_nv(oop* p) { PushOrMarkClosure::do_oop_work(p); }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	299 inline void do_oop_nv(narrowOop* p) { PushOrMarkClosure::do_oop_work(p); }
941 8b46c4d82093 4957990: Perm heap bloat in JVM ysr parents: 935 diff changeset	300
0 a61af66fc99e Initial load duke parents: diff changeset	301 // Deal with a stack overflow condition
a61af66fc99e Initial load duke parents: diff changeset	302 void handle_stack_overflow(HeapWord* lost);
a61af66fc99e Initial load duke parents: diff changeset	303 private:
a61af66fc99e Initial load duke parents: diff changeset	304 inline void do_yield_check();
a61af66fc99e Initial load duke parents: diff changeset	305 };
a61af66fc99e Initial load duke parents: diff changeset	306
a61af66fc99e Initial load duke parents: diff changeset	307 // A parallel (MT) version of the above.
a61af66fc99e Initial load duke parents: diff changeset	308 // This closure is used during the concurrent marking phase
a61af66fc99e Initial load duke parents: diff changeset	309 // following the first checkpoint. Its use is buried in
a61af66fc99e Initial load duke parents: diff changeset	310 // the closure Par_MarkFromRootsClosure.
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	311 class Par_PushOrMarkClosure: public CMSOopClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	312 private:
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	313 CMSCollector* _collector;
0 a61af66fc99e Initial load duke parents: diff changeset	314 MemRegion _whole_span;
a61af66fc99e Initial load duke parents: diff changeset	315 MemRegion _span; // local chunk
a61af66fc99e Initial load duke parents: diff changeset	316 CMSBitMap* _bit_map;
a61af66fc99e Initial load duke parents: diff changeset	317 OopTaskQueue* _work_queue;
a61af66fc99e Initial load duke parents: diff changeset	318 CMSMarkStack* _overflow_stack;
a61af66fc99e Initial load duke parents: diff changeset	319 HeapWord* const _finger;
a61af66fc99e Initial load duke parents: diff changeset	320 HeapWord** const _global_finger_addr;
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	321 Par_MarkFromRootsClosure* const
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	322 _parent;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	323 protected:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	324 DO_OOP_WORK_DEFN
0 a61af66fc99e Initial load duke parents: diff changeset	325 public:
a61af66fc99e Initial load duke parents: diff changeset	326 Par_PushOrMarkClosure(CMSCollector* cms_collector,
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	327 MemRegion span,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	328 CMSBitMap* bit_map,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	329 OopTaskQueue* work_queue,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	330 CMSMarkStack* mark_stack,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	331 HeapWord* finger,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	332 HeapWord** global_finger_addr,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	333 Par_MarkFromRootsClosure* parent);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	334 virtual void do_oop(oop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	335 virtual void do_oop(narrowOop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	336 inline void do_oop_nv(oop* p) { Par_PushOrMarkClosure::do_oop_work(p); }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	337 inline void do_oop_nv(narrowOop* p) { Par_PushOrMarkClosure::do_oop_work(p); }
941 8b46c4d82093 4957990: Perm heap bloat in JVM ysr parents: 935 diff changeset	338
0 a61af66fc99e Initial load duke parents: diff changeset	339 // Deal with a stack overflow condition
a61af66fc99e Initial load duke parents: diff changeset	340 void handle_stack_overflow(HeapWord* lost);
a61af66fc99e Initial load duke parents: diff changeset	341 private:
a61af66fc99e Initial load duke parents: diff changeset	342 inline void do_yield_check();
a61af66fc99e Initial load duke parents: diff changeset	343 };
a61af66fc99e Initial load duke parents: diff changeset	344
a61af66fc99e Initial load duke parents: diff changeset	345 // For objects in CMS generation, this closure marks
a61af66fc99e Initial load duke parents: diff changeset	346 // given objects (transitively) as being reachable/live.
a61af66fc99e Initial load duke parents: diff changeset	347 // This is currently used during the (weak) reference object
452 00b023ae2d78 6722113: CMS: Incorrect overflow handling during precleaning of Reference lists ysr parents: 143 diff changeset	348 // processing phase of the CMS final checkpoint step, as
00b023ae2d78 6722113: CMS: Incorrect overflow handling during precleaning of Reference lists ysr parents: 143 diff changeset	349 // well as during the concurrent precleaning of the discovered
00b023ae2d78 6722113: CMS: Incorrect overflow handling during precleaning of Reference lists ysr parents: 143 diff changeset	350 // reference lists.
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	351 class CMSKeepAliveClosure: public CMSOopClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	352 private:
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	353 CMSCollector* _collector;
143 b5489bb705c9 6662086: 6u4+, 7b11+: CMS never clears referents when -XX:+ParallelRefProcEnabled ysr parents: 113 diff changeset	354 const MemRegion _span;
0 a61af66fc99e Initial load duke parents: diff changeset	355 CMSMarkStack* _mark_stack;
a61af66fc99e Initial load duke parents: diff changeset	356 CMSBitMap* _bit_map;
452 00b023ae2d78 6722113: CMS: Incorrect overflow handling during precleaning of Reference lists ysr parents: 143 diff changeset	357 bool _concurrent_precleaning;
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	358 protected:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	359 DO_OOP_WORK_DEFN
0 a61af66fc99e Initial load duke parents: diff changeset	360 public:
a61af66fc99e Initial load duke parents: diff changeset	361 CMSKeepAliveClosure(CMSCollector* collector, MemRegion span,
452 00b023ae2d78 6722113: CMS: Incorrect overflow handling during precleaning of Reference lists ysr parents: 143 diff changeset	362 CMSBitMap* bit_map, CMSMarkStack* mark_stack,
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	363 bool cpc);
452 00b023ae2d78 6722113: CMS: Incorrect overflow handling during precleaning of Reference lists ysr parents: 143 diff changeset	364 bool concurrent_precleaning() const { return _concurrent_precleaning; }
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	365 virtual void do_oop(oop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	366 virtual void do_oop(narrowOop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	367 inline void do_oop_nv(oop* p) { CMSKeepAliveClosure::do_oop_work(p); }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	368 inline void do_oop_nv(narrowOop* p) { CMSKeepAliveClosure::do_oop_work(p); }
0 a61af66fc99e Initial load duke parents: diff changeset	369 };
a61af66fc99e Initial load duke parents: diff changeset	370
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	371 class CMSInnerParMarkAndPushClosure: public CMSOopClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	372 private:
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	373 CMSCollector* _collector;
0 a61af66fc99e Initial load duke parents: diff changeset	374 MemRegion _span;
a61af66fc99e Initial load duke parents: diff changeset	375 OopTaskQueue* _work_queue;
a61af66fc99e Initial load duke parents: diff changeset	376 CMSBitMap* _bit_map;
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	377 protected:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	378 DO_OOP_WORK_DEFN
0 a61af66fc99e Initial load duke parents: diff changeset	379 public:
a61af66fc99e Initial load duke parents: diff changeset	380 CMSInnerParMarkAndPushClosure(CMSCollector* collector,
a61af66fc99e Initial load duke parents: diff changeset	381 MemRegion span, CMSBitMap* bit_map,
935 05f89f00a864 6798898: CMS: bugs related to class unloading jmasa parents: 452 diff changeset	382 OopTaskQueue* work_queue);
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	383 virtual void do_oop(oop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	384 virtual void do_oop(narrowOop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	385 inline void do_oop_nv(oop* p) { CMSInnerParMarkAndPushClosure::do_oop_work(p); }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	386 inline void do_oop_nv(narrowOop* p) { CMSInnerParMarkAndPushClosure::do_oop_work(p); }
0 a61af66fc99e Initial load duke parents: diff changeset	387 };
a61af66fc99e Initial load duke parents: diff changeset	388
a61af66fc99e Initial load duke parents: diff changeset	389 // A parallel (MT) version of the above, used when
a61af66fc99e Initial load duke parents: diff changeset	390 // reference processing is parallel; the only difference
a61af66fc99e Initial load duke parents: diff changeset	391 // is in the do_oop method.
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	392 class CMSParKeepAliveClosure: public CMSOopClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	393 private:
0 a61af66fc99e Initial load duke parents: diff changeset	394 MemRegion _span;
a61af66fc99e Initial load duke parents: diff changeset	395 OopTaskQueue* _work_queue;
a61af66fc99e Initial load duke parents: diff changeset	396 CMSBitMap* _bit_map;
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	397 CMSInnerParMarkAndPushClosure
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	398 _mark_and_push;
0 a61af66fc99e Initial load duke parents: diff changeset	399 const uint _low_water_mark;
a61af66fc99e Initial load duke parents: diff changeset	400 void trim_queue(uint max);
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	401 protected:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	402 DO_OOP_WORK_DEFN
0 a61af66fc99e Initial load duke parents: diff changeset	403 public:
a61af66fc99e Initial load duke parents: diff changeset	404 CMSParKeepAliveClosure(CMSCollector* collector, MemRegion span,
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 1972 diff changeset	405 CMSBitMap* bit_map, OopTaskQueue* work_queue);
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	406 virtual void do_oop(oop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	407 virtual void do_oop(narrowOop* p);
0 a61af66fc99e Initial load duke parents: diff changeset	408 };
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	409
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	410 #endif // SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSOOPCLOSURES_HPP

Mercurial > hg > truffle

annotate src/share/vm/gc_implementation/concurrentMarkSweep/cmsOopClosures.hpp @ 6725:da91efe96a93