1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/gc_implementation/parNew/parOopClosures.hpp Sat Dec 01 00:00:00 2007 +0000
1.3 @@ -0,0 +1,136 @@
1.4 +/*
1.5 + * Copyright (c) 2007 Sun Microsystems, Inc. All Rights Reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.24 + * have any questions.
1.25 + *
1.26 + */
1.27 +
1.28 +// Closures for ParNewGeneration
1.29 +
1.30 +class ParScanThreadState;
1.31 +class ParNewGeneration;
1.32 +template<class E> class GenericTaskQueueSet;
1.33 +typedef GenericTaskQueueSet<oop> ObjToScanQueueSet;
1.34 +class ParallelTaskTerminator;
1.35 +
1.36 +class ParScanClosure: public OopsInGenClosure {
1.37 +protected:
1.38 + ParScanThreadState* _par_scan_state;
1.39 + ParNewGeneration* _g;
1.40 + HeapWord* _boundary;
1.41 + void do_oop_work(oop* p,
1.42 + bool gc_barrier,
1.43 + bool root_scan);
1.44 +
1.45 + void par_do_barrier(oop* p);
1.46 +
1.47 +public:
1.48 + ParScanClosure(ParNewGeneration* g, ParScanThreadState* par_scan_state);
1.49 +};
1.50 +
1.51 +class ParScanWithBarrierClosure: public ParScanClosure {
1.52 +public:
1.53 + void do_oop(oop* p) { do_oop_work(p, true, false); }
1.54 + void do_oop_nv(oop* p) { do_oop_work(p, true, false); }
1.55 + ParScanWithBarrierClosure(ParNewGeneration* g,
1.56 + ParScanThreadState* par_scan_state) :
1.57 + ParScanClosure(g, par_scan_state) {}
1.58 +};
1.59 +
1.60 +class ParScanWithoutBarrierClosure: public ParScanClosure {
1.61 +public:
1.62 + ParScanWithoutBarrierClosure(ParNewGeneration* g,
1.63 + ParScanThreadState* par_scan_state) :
1.64 + ParScanClosure(g, par_scan_state) {}
1.65 + void do_oop(oop* p) { do_oop_work(p, false, false); }
1.66 + void do_oop_nv(oop* p) { do_oop_work(p, false, false); }
1.67 +};
1.68 +
1.69 +class ParRootScanWithBarrierTwoGensClosure: public ParScanClosure {
1.70 +public:
1.71 + ParRootScanWithBarrierTwoGensClosure(ParNewGeneration* g,
1.72 + ParScanThreadState* par_scan_state) :
1.73 + ParScanClosure(g, par_scan_state) {}
1.74 + void do_oop(oop* p) { do_oop_work(p, true, true); }
1.75 +};
1.76 +
1.77 +class ParRootScanWithoutBarrierClosure: public ParScanClosure {
1.78 +public:
1.79 + ParRootScanWithoutBarrierClosure(ParNewGeneration* g,
1.80 + ParScanThreadState* par_scan_state) :
1.81 + ParScanClosure(g, par_scan_state) {}
1.82 + void do_oop(oop* p) { do_oop_work(p, false, true); }
1.83 +};
1.84 +
1.85 +class ParScanWeakRefClosure: public ScanWeakRefClosure {
1.86 +protected:
1.87 + ParScanThreadState* _par_scan_state;
1.88 +public:
1.89 + ParScanWeakRefClosure(ParNewGeneration* g,
1.90 + ParScanThreadState* par_scan_state);
1.91 + void do_oop(oop* p);
1.92 + void do_oop_nv(oop* p);
1.93 +};
1.94 +
1.95 +class ParEvacuateFollowersClosure: public VoidClosure {
1.96 + ParScanThreadState* _par_scan_state;
1.97 + ParScanThreadState* par_scan_state() { return _par_scan_state; }
1.98 +
1.99 + // We want to preserve the specific types here (rather than "OopClosure")
1.100 + // for later de-virtualization of do_oop calls.
1.101 + ParScanWithoutBarrierClosure* _to_space_closure;
1.102 + ParScanWithoutBarrierClosure* to_space_closure() {
1.103 + return _to_space_closure;
1.104 + }
1.105 + ParRootScanWithoutBarrierClosure* _to_space_root_closure;
1.106 + ParRootScanWithoutBarrierClosure* to_space_root_closure() {
1.107 + return _to_space_root_closure;
1.108 + }
1.109 +
1.110 + ParScanWithBarrierClosure* _old_gen_closure;
1.111 + ParScanWithBarrierClosure* old_gen_closure () {
1.112 + return _old_gen_closure;
1.113 + }
1.114 + ParRootScanWithBarrierTwoGensClosure* _old_gen_root_closure;
1.115 + ParRootScanWithBarrierTwoGensClosure* old_gen_root_closure () {
1.116 + return _old_gen_root_closure;
1.117 + }
1.118 +
1.119 + ParNewGeneration* _par_gen;
1.120 + ParNewGeneration* par_gen() { return _par_gen; }
1.121 +
1.122 + ObjToScanQueueSet* _task_queues;
1.123 + ObjToScanQueueSet* task_queues() { return _task_queues; }
1.124 +
1.125 + ParallelTaskTerminator* _terminator;
1.126 + ParallelTaskTerminator* terminator() { return _terminator; }
1.127 +
1.128 +public:
1.129 + ParEvacuateFollowersClosure(
1.130 + ParScanThreadState* par_scan_state_,
1.131 + ParScanWithoutBarrierClosure* to_space_closure_,
1.132 + ParScanWithBarrierClosure* old_gen_closure_,
1.133 + ParRootScanWithoutBarrierClosure* to_space_root_closure_,
1.134 + ParNewGeneration* par_gen_,
1.135 + ParRootScanWithBarrierTwoGensClosure* old_gen_root_closure_,
1.136 + ObjToScanQueueSet* task_queues_,
1.137 + ParallelTaskTerminator* terminator_);
1.138 + void do_void();
1.139 +};
