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

annotate src/share/vm/gc_implementation/concurrentMarkSweep/cmsOopClosures.hpp @ 989:148e5441d916

6863023: need non-perm oops in code cache for JSR 292 Summary: Make a special root-list for those few nmethods which might contain non-perm oops. Reviewed-by: twisti, kvn, never, jmasa, ysr

author	jrose
date	Tue, 15 Sep 2009 21:53:47 -0700
parents	00b023ae2d78
children	54b3b351d6f9

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
a61af66fc99e Initial load duke parents: diff changeset	2 * Copyright (c) 2007 Sun Microsystems, Inc. All Rights Reserved.
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 *
a61af66fc99e Initial load duke parents: diff changeset	19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
a61af66fc99e Initial load duke parents: diff changeset	20 * CA 95054 USA or visit www.sun.com if you need additional information or
a61af66fc99e Initial load duke parents: diff changeset	21 * have any questions.
a61af66fc99e Initial load duke parents: diff changeset	22 *
a61af66fc99e Initial load duke parents: diff changeset	23 */
a61af66fc99e Initial load duke parents: diff changeset	24
a61af66fc99e Initial load duke parents: diff changeset	25 /////////////////////////////////////////////////////////////////
a61af66fc99e Initial load duke parents: diff changeset	26 // Closures used by ConcurrentMarkSweepGeneration's collector
a61af66fc99e Initial load duke parents: diff changeset	27 /////////////////////////////////////////////////////////////////
a61af66fc99e Initial load duke parents: diff changeset	28 class ConcurrentMarkSweepGeneration;
a61af66fc99e Initial load duke parents: diff changeset	29 class CMSBitMap;
a61af66fc99e Initial load duke parents: diff changeset	30 class CMSMarkStack;
a61af66fc99e Initial load duke parents: diff changeset	31 class CMSCollector;
a61af66fc99e Initial load duke parents: diff changeset	32 class MarkFromRootsClosure;
a61af66fc99e Initial load duke parents: diff changeset	33 class Par_MarkFromRootsClosure;
a61af66fc99e Initial load duke parents: diff changeset	34
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	35 // 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	36 #define DO_OOP_WORK_DEFN \
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	37 void do_oop(oop obj); \
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	38 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	39 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	40 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	41 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	42 do_oop(obj); \
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	43 } \
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	44 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	45
0 a61af66fc99e Initial load duke parents: diff changeset	46 class MarkRefsIntoClosure: public OopsInGenClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	47 private:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	48 const MemRegion _span;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	49 CMSBitMap* _bitMap;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	50 const bool _should_do_nmethods;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	51 protected:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	52 DO_OOP_WORK_DEFN
0 a61af66fc99e Initial load duke parents: diff changeset	53 public:
a61af66fc99e Initial load duke parents: diff changeset	54 MarkRefsIntoClosure(MemRegion span, CMSBitMap* bitMap,
a61af66fc99e Initial load duke parents: diff changeset	55 bool should_do_nmethods);
989 148e5441d916 6863023: need non-perm oops in code cache for JSR 292 jrose parents: 452 diff changeset	56 bool should_do_nmethods() { return _should_do_nmethods; }
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	57 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	58 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	59 inline void do_oop_nv(oop* p) { MarkRefsIntoClosure::do_oop_work(p); }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	60 inline void do_oop_nv(narrowOop* p) { MarkRefsIntoClosure::do_oop_work(p); }
0 a61af66fc99e Initial load duke parents: diff changeset	61 bool do_header() { return true; }
a61af66fc99e Initial load duke parents: diff changeset	62 Prefetch::style prefetch_style() {
a61af66fc99e Initial load duke parents: diff changeset	63 return Prefetch::do_read;
a61af66fc99e Initial load duke parents: diff changeset	64 }
a61af66fc99e Initial load duke parents: diff changeset	65 };
a61af66fc99e Initial load duke parents: diff changeset	66
a61af66fc99e Initial load duke parents: diff changeset	67 // A variant of the above used in certain kinds of CMS
a61af66fc99e Initial load duke parents: diff changeset	68 // marking verification.
a61af66fc99e Initial load duke parents: diff changeset	69 class MarkRefsIntoVerifyClosure: public OopsInGenClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	70 private:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	71 const MemRegion _span;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	72 CMSBitMap* _verification_bm;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	73 CMSBitMap* _cms_bm;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	74 const bool _should_do_nmethods;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	75 protected:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	76 DO_OOP_WORK_DEFN
0 a61af66fc99e Initial load duke parents: diff changeset	77 public:
a61af66fc99e Initial load duke parents: diff changeset	78 MarkRefsIntoVerifyClosure(MemRegion span, CMSBitMap* verification_bm,
a61af66fc99e Initial load duke parents: diff changeset	79 CMSBitMap* cms_bm, bool should_do_nmethods);
989 148e5441d916 6863023: need non-perm oops in code cache for JSR 292 jrose parents: 452 diff changeset	80 bool should_do_nmethods() { return _should_do_nmethods; }
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	81 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	82 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	83 inline void do_oop_nv(oop* p) { MarkRefsIntoVerifyClosure::do_oop_work(p); }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	84 inline void do_oop_nv(narrowOop* p) { MarkRefsIntoVerifyClosure::do_oop_work(p); }
0 a61af66fc99e Initial load duke parents: diff changeset	85 bool do_header() { return true; }
a61af66fc99e Initial load duke parents: diff changeset	86 Prefetch::style prefetch_style() {
a61af66fc99e Initial load duke parents: diff changeset	87 return Prefetch::do_read;
a61af66fc99e Initial load duke parents: diff changeset	88 }
a61af66fc99e Initial load duke parents: diff changeset	89 };
a61af66fc99e Initial load duke parents: diff changeset	90
a61af66fc99e Initial load duke parents: diff changeset	91 // The non-parallel version (the parallel version appears further below).
a61af66fc99e Initial load duke parents: diff changeset	92 class PushAndMarkClosure: public OopClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	93 private:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	94 CMSCollector* _collector;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	95 MemRegion _span;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	96 CMSBitMap* _bit_map;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	97 CMSBitMap* _mod_union_table;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	98 CMSMarkStack* _mark_stack;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	99 CMSMarkStack* _revisit_stack;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	100 bool _concurrent_precleaning;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	101 bool const _should_remember_klasses;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	102 protected:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	103 DO_OOP_WORK_DEFN
0 a61af66fc99e Initial load duke parents: diff changeset	104 public:
a61af66fc99e Initial load duke parents: diff changeset	105 PushAndMarkClosure(CMSCollector* collector,
a61af66fc99e Initial load duke parents: diff changeset	106 MemRegion span,
a61af66fc99e Initial load duke parents: diff changeset	107 ReferenceProcessor* rp,
a61af66fc99e Initial load duke parents: diff changeset	108 CMSBitMap* bit_map,
a61af66fc99e Initial load duke parents: diff changeset	109 CMSBitMap* mod_union_table,
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	110 CMSMarkStack* mark_stack,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	111 CMSMarkStack* revisit_stack,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	112 bool concurrent_precleaning);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	113 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	114 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	115 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	116 inline void do_oop_nv(narrowOop* p) { PushAndMarkClosure::do_oop_work(p); }
0 a61af66fc99e Initial load duke parents: diff changeset	117 bool do_header() { return true; }
a61af66fc99e Initial load duke parents: diff changeset	118 Prefetch::style prefetch_style() {
a61af66fc99e Initial load duke parents: diff changeset	119 return Prefetch::do_read;
a61af66fc99e Initial load duke parents: diff changeset	120 }
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	121 virtual const bool should_remember_klasses() const {
0 a61af66fc99e Initial load duke parents: diff changeset	122 return _should_remember_klasses;
a61af66fc99e Initial load duke parents: diff changeset	123 }
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	124 virtual void remember_klass(Klass* k);
0 a61af66fc99e Initial load duke parents: diff changeset	125 };
a61af66fc99e Initial load duke parents: diff changeset	126
a61af66fc99e Initial load duke parents: diff changeset	127 // In the parallel case, the revisit stack, the bit map and the
a61af66fc99e Initial load duke parents: diff changeset	128 // reference processor are currently all shared. Access to
a61af66fc99e Initial load duke parents: diff changeset	129 // these shared mutable structures must use appropriate
a61af66fc99e Initial load duke parents: diff changeset	130 // synchronization (for instance, via CAS). The marking stack
a61af66fc99e Initial load duke parents: diff changeset	131 // used in the non-parallel case above is here replaced with
a61af66fc99e Initial load duke parents: diff changeset	132 // an OopTaskQueue structure to allow efficient work stealing.
a61af66fc99e Initial load duke parents: diff changeset	133 class Par_PushAndMarkClosure: public OopClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	134 private:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	135 CMSCollector* _collector;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	136 MemRegion _span;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	137 CMSBitMap* _bit_map;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	138 OopTaskQueue* _work_queue;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	139 CMSMarkStack* _revisit_stack;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	140 bool const _should_remember_klasses;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	141 protected:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	142 DO_OOP_WORK_DEFN
0 a61af66fc99e Initial load duke parents: diff changeset	143 public:
a61af66fc99e Initial load duke parents: diff changeset	144 Par_PushAndMarkClosure(CMSCollector* collector,
a61af66fc99e Initial load duke parents: diff changeset	145 MemRegion span,
a61af66fc99e Initial load duke parents: diff changeset	146 ReferenceProcessor* rp,
a61af66fc99e Initial load duke parents: diff changeset	147 CMSBitMap* bit_map,
a61af66fc99e Initial load duke parents: diff changeset	148 OopTaskQueue* work_queue,
a61af66fc99e Initial load duke parents: diff changeset	149 CMSMarkStack* revisit_stack);
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	150 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	151 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	152 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	153 inline void do_oop_nv(narrowOop* p) { Par_PushAndMarkClosure::do_oop_work(p); }
0 a61af66fc99e Initial load duke parents: diff changeset	154 bool do_header() { return true; }
a61af66fc99e Initial load duke parents: diff changeset	155 Prefetch::style prefetch_style() {
a61af66fc99e Initial load duke parents: diff changeset	156 return Prefetch::do_read;
a61af66fc99e Initial load duke parents: diff changeset	157 }
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	158 virtual const bool should_remember_klasses() const {
0 a61af66fc99e Initial load duke parents: diff changeset	159 return _should_remember_klasses;
a61af66fc99e Initial load duke parents: diff changeset	160 }
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	161 virtual void remember_klass(Klass* k);
0 a61af66fc99e Initial load duke parents: diff changeset	162 };
a61af66fc99e Initial load duke parents: diff changeset	163
a61af66fc99e Initial load duke parents: diff changeset	164 // The non-parallel version (the parallel version appears further below).
a61af66fc99e Initial load duke parents: diff changeset	165 class MarkRefsIntoAndScanClosure: public OopsInGenClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	166 private:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	167 MemRegion _span;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	168 CMSBitMap* _bit_map;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	169 CMSMarkStack* _mark_stack;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	170 PushAndMarkClosure _pushAndMarkClosure;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	171 CMSCollector* _collector;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	172 Mutex* _freelistLock;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	173 bool _yield;
0 a61af66fc99e Initial load duke parents: diff changeset	174 // 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	175 bool _concurrent_precleaning;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	176 protected:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	177 DO_OOP_WORK_DEFN
0 a61af66fc99e Initial load duke parents: diff changeset	178 public:
a61af66fc99e Initial load duke parents: diff changeset	179 MarkRefsIntoAndScanClosure(MemRegion span,
a61af66fc99e Initial load duke parents: diff changeset	180 ReferenceProcessor* rp,
a61af66fc99e Initial load duke parents: diff changeset	181 CMSBitMap* bit_map,
a61af66fc99e Initial load duke parents: diff changeset	182 CMSBitMap* mod_union_table,
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	183 CMSMarkStack* mark_stack,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	184 CMSMarkStack* revisit_stack,
0 a61af66fc99e Initial load duke parents: diff changeset	185 CMSCollector* collector,
a61af66fc99e Initial load duke parents: diff changeset	186 bool should_yield,
a61af66fc99e Initial load duke parents: diff changeset	187 bool concurrent_precleaning);
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	188 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	189 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	190 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	191 inline void do_oop_nv(narrowOop* p) { MarkRefsIntoAndScanClosure::do_oop_work(p); }
0 a61af66fc99e Initial load duke parents: diff changeset	192 bool do_header() { return true; }
a61af66fc99e Initial load duke parents: diff changeset	193 Prefetch::style prefetch_style() {
a61af66fc99e Initial load duke parents: diff changeset	194 return Prefetch::do_read;
a61af66fc99e Initial load duke parents: diff changeset	195 }
a61af66fc99e Initial load duke parents: diff changeset	196 void set_freelistLock(Mutex* m) {
a61af66fc99e Initial load duke parents: diff changeset	197 _freelistLock = m;
a61af66fc99e Initial load duke parents: diff changeset	198 }
a61af66fc99e Initial load duke parents: diff changeset	199
a61af66fc99e Initial load duke parents: diff changeset	200 private:
a61af66fc99e Initial load duke parents: diff changeset	201 inline void do_yield_check();
a61af66fc99e Initial load duke parents: diff changeset	202 void do_yield_work();
a61af66fc99e Initial load duke parents: diff changeset	203 bool take_from_overflow_list();
a61af66fc99e Initial load duke parents: diff changeset	204 };
a61af66fc99e Initial load duke parents: diff changeset	205
a61af66fc99e Initial load duke parents: diff changeset	206 // Tn this, the parallel avatar of MarkRefsIntoAndScanClosure, the revisit
a61af66fc99e Initial load duke parents: diff changeset	207 // stack and the bitMap are shared, so access needs to be suitably
a61af66fc99e Initial load duke parents: diff changeset	208 // sycnhronized. An OopTaskQueue structure, supporting efficient
a61af66fc99e Initial load duke parents: diff changeset	209 // workstealing, replaces a CMSMarkStack for storing grey objects.
a61af66fc99e Initial load duke parents: diff changeset	210 class Par_MarkRefsIntoAndScanClosure: public OopsInGenClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	211 private:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	212 MemRegion _span;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	213 CMSBitMap* _bit_map;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	214 OopTaskQueue* _work_queue;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	215 const uint _low_water_mark;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	216 Par_PushAndMarkClosure _par_pushAndMarkClosure;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	217 protected:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	218 DO_OOP_WORK_DEFN
0 a61af66fc99e Initial load duke parents: diff changeset	219 public:
a61af66fc99e Initial load duke parents: diff changeset	220 Par_MarkRefsIntoAndScanClosure(CMSCollector* collector,
a61af66fc99e Initial load duke parents: diff changeset	221 MemRegion span,
a61af66fc99e Initial load duke parents: diff changeset	222 ReferenceProcessor* rp,
a61af66fc99e Initial load duke parents: diff changeset	223 CMSBitMap* bit_map,
a61af66fc99e Initial load duke parents: diff changeset	224 OopTaskQueue* work_queue,
a61af66fc99e Initial load duke parents: diff changeset	225 CMSMarkStack* revisit_stack);
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	226 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	227 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	228 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	229 inline void do_oop_nv(narrowOop* p) { Par_MarkRefsIntoAndScanClosure::do_oop_work(p); }
0 a61af66fc99e Initial load duke parents: diff changeset	230 bool do_header() { return true; }
a61af66fc99e Initial load duke parents: diff changeset	231 virtual const bool do_nmethods() const { return true; }
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 trim_queue(uint size);
a61af66fc99e Initial load duke parents: diff changeset	236 };
a61af66fc99e Initial load duke parents: diff changeset	237
a61af66fc99e Initial load duke parents: diff changeset	238 // This closure is used during the concurrent marking phase
a61af66fc99e Initial load duke parents: diff changeset	239 // following the first checkpoint. Its use is buried in
a61af66fc99e Initial load duke parents: diff changeset	240 // the closure MarkFromRootsClosure.
a61af66fc99e Initial load duke parents: diff changeset	241 class PushOrMarkClosure: public OopClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	242 private:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	243 CMSCollector* _collector;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	244 MemRegion _span;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	245 CMSBitMap* _bitMap;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	246 CMSMarkStack* _markStack;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	247 CMSMarkStack* _revisitStack;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	248 HeapWord* const _finger;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	249 MarkFromRootsClosure* const
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	250 _parent;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	251 bool const _should_remember_klasses;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	252 protected:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	253 DO_OOP_WORK_DEFN
0 a61af66fc99e Initial load duke parents: diff changeset	254 public:
a61af66fc99e Initial load duke parents: diff changeset	255 PushOrMarkClosure(CMSCollector* cms_collector,
a61af66fc99e Initial load duke parents: diff changeset	256 MemRegion span,
a61af66fc99e Initial load duke parents: diff changeset	257 CMSBitMap* bitMap,
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	258 CMSMarkStack* markStack,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	259 CMSMarkStack* revisitStack,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	260 HeapWord* finger,
0 a61af66fc99e Initial load duke parents: diff changeset	261 MarkFromRootsClosure* parent);
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	262 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	263 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	264 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	265 inline void do_oop_nv(narrowOop* 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	266 virtual const bool should_remember_klasses() const {
0 a61af66fc99e Initial load duke parents: diff changeset	267 return _should_remember_klasses;
a61af66fc99e Initial load duke parents: diff changeset	268 }
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	269 virtual void remember_klass(Klass* k);
0 a61af66fc99e Initial load duke parents: diff changeset	270 // Deal with a stack overflow condition
a61af66fc99e Initial load duke parents: diff changeset	271 void handle_stack_overflow(HeapWord* lost);
a61af66fc99e Initial load duke parents: diff changeset	272 private:
a61af66fc99e Initial load duke parents: diff changeset	273 inline void do_yield_check();
a61af66fc99e Initial load duke parents: diff changeset	274 };
a61af66fc99e Initial load duke parents: diff changeset	275
a61af66fc99e Initial load duke parents: diff changeset	276 // A parallel (MT) version of the above.
a61af66fc99e Initial load duke parents: diff changeset	277 // This closure is used during the concurrent marking phase
a61af66fc99e Initial load duke parents: diff changeset	278 // following the first checkpoint. Its use is buried in
a61af66fc99e Initial load duke parents: diff changeset	279 // the closure Par_MarkFromRootsClosure.
a61af66fc99e Initial load duke parents: diff changeset	280 class Par_PushOrMarkClosure: public OopClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	281 private:
0 a61af66fc99e Initial load duke parents: diff changeset	282 CMSCollector* _collector;
a61af66fc99e Initial load duke parents: diff changeset	283 MemRegion _whole_span;
a61af66fc99e Initial load duke parents: diff changeset	284 MemRegion _span; // local chunk
a61af66fc99e Initial load duke parents: diff changeset	285 CMSBitMap* _bit_map;
a61af66fc99e Initial load duke parents: diff changeset	286 OopTaskQueue* _work_queue;
a61af66fc99e Initial load duke parents: diff changeset	287 CMSMarkStack* _overflow_stack;
a61af66fc99e Initial load duke parents: diff changeset	288 CMSMarkStack* _revisit_stack;
a61af66fc99e Initial load duke parents: diff changeset	289 HeapWord* const _finger;
a61af66fc99e Initial load duke parents: diff changeset	290 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	291 Par_MarkFromRootsClosure* const
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	292 _parent;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	293 bool const _should_remember_klasses;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	294 protected:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	295 DO_OOP_WORK_DEFN
0 a61af66fc99e Initial load duke parents: diff changeset	296 public:
a61af66fc99e Initial load duke parents: diff changeset	297 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	298 MemRegion span,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	299 CMSBitMap* bit_map,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	300 OopTaskQueue* work_queue,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	301 CMSMarkStack* mark_stack,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	302 CMSMarkStack* revisit_stack,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	303 HeapWord* finger,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	304 HeapWord** global_finger_addr,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	305 Par_MarkFromRootsClosure* parent);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	306 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	307 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	308 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	309 inline void do_oop_nv(narrowOop* 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	310 virtual const bool should_remember_klasses() const {
0 a61af66fc99e Initial load duke parents: diff changeset	311 return _should_remember_klasses;
a61af66fc99e Initial load duke parents: diff changeset	312 }
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	313 virtual void remember_klass(Klass* k);
0 a61af66fc99e Initial load duke parents: diff changeset	314 // Deal with a stack overflow condition
a61af66fc99e Initial load duke parents: diff changeset	315 void handle_stack_overflow(HeapWord* lost);
a61af66fc99e Initial load duke parents: diff changeset	316 private:
a61af66fc99e Initial load duke parents: diff changeset	317 inline void do_yield_check();
a61af66fc99e Initial load duke parents: diff changeset	318 };
a61af66fc99e Initial load duke parents: diff changeset	319
a61af66fc99e Initial load duke parents: diff changeset	320 // For objects in CMS generation, this closure marks
a61af66fc99e Initial load duke parents: diff changeset	321 // given objects (transitively) as being reachable/live.
a61af66fc99e Initial load duke parents: diff changeset	322 // 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	323 // 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	324 // 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	325 // reference lists.
0 a61af66fc99e Initial load duke parents: diff changeset	326 class CMSKeepAliveClosure: public OopClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	327 private:
0 a61af66fc99e Initial load duke parents: diff changeset	328 CMSCollector* _collector;
143 b5489bb705c9 6662086: 6u4+, 7b11+: CMS never clears referents when -XX:+ParallelRefProcEnabled ysr parents: 113 diff changeset	329 const MemRegion _span;
0 a61af66fc99e Initial load duke parents: diff changeset	330 CMSMarkStack* _mark_stack;
a61af66fc99e Initial load duke parents: diff changeset	331 CMSBitMap* _bit_map;
452 00b023ae2d78 6722113: CMS: Incorrect overflow handling during precleaning of Reference lists ysr parents: 143 diff changeset	332 bool _concurrent_precleaning;
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	333 protected:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	334 DO_OOP_WORK_DEFN
0 a61af66fc99e Initial load duke parents: diff changeset	335 public:
a61af66fc99e Initial load duke parents: diff changeset	336 CMSKeepAliveClosure(CMSCollector* collector, MemRegion span,
452 00b023ae2d78 6722113: CMS: Incorrect overflow handling during precleaning of Reference lists ysr parents: 143 diff changeset	337 CMSBitMap* bit_map, CMSMarkStack* mark_stack,
00b023ae2d78 6722113: CMS: Incorrect overflow handling during precleaning of Reference lists ysr parents: 143 diff changeset	338 bool cpc):
0 a61af66fc99e Initial load duke parents: diff changeset	339 _collector(collector),
a61af66fc99e Initial load duke parents: diff changeset	340 _span(span),
a61af66fc99e Initial load duke parents: diff changeset	341 _bit_map(bit_map),
452 00b023ae2d78 6722113: CMS: Incorrect overflow handling during precleaning of Reference lists ysr parents: 143 diff changeset	342 _mark_stack(mark_stack),
00b023ae2d78 6722113: CMS: Incorrect overflow handling during precleaning of Reference lists ysr parents: 143 diff changeset	343 _concurrent_precleaning(cpc) {
143 b5489bb705c9 6662086: 6u4+, 7b11+: CMS never clears referents when -XX:+ParallelRefProcEnabled ysr parents: 113 diff changeset	344 assert(!_span.is_empty(), "Empty span could spell trouble");
b5489bb705c9 6662086: 6u4+, 7b11+: CMS never clears referents when -XX:+ParallelRefProcEnabled ysr parents: 113 diff changeset	345 }
452 00b023ae2d78 6722113: CMS: Incorrect overflow handling during precleaning of Reference lists ysr parents: 143 diff changeset	346 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	347 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	348 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	349 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	350 inline void do_oop_nv(narrowOop* p) { CMSKeepAliveClosure::do_oop_work(p); }
0 a61af66fc99e Initial load duke parents: diff changeset	351 };
a61af66fc99e Initial load duke parents: diff changeset	352
a61af66fc99e Initial load duke parents: diff changeset	353 class CMSInnerParMarkAndPushClosure: public OopClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	354 private:
0 a61af66fc99e Initial load duke parents: diff changeset	355 CMSCollector* _collector;
a61af66fc99e Initial load duke parents: diff changeset	356 MemRegion _span;
a61af66fc99e Initial load duke parents: diff changeset	357 OopTaskQueue* _work_queue;
a61af66fc99e Initial load duke parents: diff changeset	358 CMSBitMap* _bit_map;
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	359 protected:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	360 DO_OOP_WORK_DEFN
0 a61af66fc99e Initial load duke parents: diff changeset	361 public:
a61af66fc99e Initial load duke parents: diff changeset	362 CMSInnerParMarkAndPushClosure(CMSCollector* collector,
a61af66fc99e Initial load duke parents: diff changeset	363 MemRegion span, CMSBitMap* bit_map,
a61af66fc99e Initial load duke parents: diff changeset	364 OopTaskQueue* work_queue):
a61af66fc99e Initial load duke parents: diff changeset	365 _collector(collector),
a61af66fc99e Initial load duke parents: diff changeset	366 _span(span),
a61af66fc99e Initial load duke parents: diff changeset	367 _bit_map(bit_map),
a61af66fc99e Initial load duke parents: diff changeset	368 _work_queue(work_queue) { }
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	369 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	370 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	371 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	372 inline void do_oop_nv(narrowOop* p) { CMSInnerParMarkAndPushClosure::do_oop_work(p); }
0 a61af66fc99e Initial load duke parents: diff changeset	373 };
a61af66fc99e Initial load duke parents: diff changeset	374
a61af66fc99e Initial load duke parents: diff changeset	375 // A parallel (MT) version of the above, used when
a61af66fc99e Initial load duke parents: diff changeset	376 // reference processing is parallel; the only difference
a61af66fc99e Initial load duke parents: diff changeset	377 // is in the do_oop method.
a61af66fc99e Initial load duke parents: diff changeset	378 class CMSParKeepAliveClosure: public OopClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	379 private:
0 a61af66fc99e Initial load duke parents: diff changeset	380 CMSCollector* _collector;
a61af66fc99e Initial load duke parents: diff changeset	381 MemRegion _span;
a61af66fc99e Initial load duke parents: diff changeset	382 OopTaskQueue* _work_queue;
a61af66fc99e Initial load duke parents: diff changeset	383 CMSBitMap* _bit_map;
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	384 CMSInnerParMarkAndPushClosure
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	385 _mark_and_push;
0 a61af66fc99e Initial load duke parents: diff changeset	386 const uint _low_water_mark;
a61af66fc99e Initial load duke parents: diff changeset	387 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	388 protected:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	389 DO_OOP_WORK_DEFN
0 a61af66fc99e Initial load duke parents: diff changeset	390 public:
a61af66fc99e Initial load duke parents: diff changeset	391 CMSParKeepAliveClosure(CMSCollector* collector, MemRegion span,
a61af66fc99e Initial load duke parents: diff changeset	392 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	393 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	394 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	395 inline void do_oop_nv(oop* p) { CMSParKeepAliveClosure::do_oop_work(p); }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	396 inline void do_oop_nv(narrowOop* p) { CMSParKeepAliveClosure::do_oop_work(p); }
0 a61af66fc99e Initial load duke parents: diff changeset	397 };

Mercurial > hg > truffle

annotate src/share/vm/gc_implementation/concurrentMarkSweep/cmsOopClosures.hpp @ 989:148e5441d916