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src/share/vm/gc_implementation/parallelScavenge/psMarkSweep.hpp@f90c822e73f8 (annotated)
src/share/vm/gc_implementation/parallelScavenge/psMarkSweep.hpp
Wed, 27 Apr 2016 01:25:04 +0800
- author
- aoqi
- date
- Wed, 27 Apr 2016 01:25:04 +0800
- changeset 0
- f90c822e73f8
- child 6876
- 710a3c8b516e
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http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 4 | * |
| aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 7 | * published by the Free Software Foundation. |
| aoqi@0 | 8 | * |
| aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 13 | * accompanied this code). |
| aoqi@0 | 14 | * |
| aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 18 | * |
| aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 21 | * questions. |
| aoqi@0 | 22 | * |
| aoqi@0 | 23 | */ |
| aoqi@0 | 24 | |
| aoqi@0 | 25 | #ifndef SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSMARKSWEEP_HPP |
| aoqi@0 | 26 | #define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSMARKSWEEP_HPP |
| aoqi@0 | 27 | |
| aoqi@0 | 28 | #include "gc_implementation/shared/collectorCounters.hpp" |
| aoqi@0 | 29 | #include "gc_implementation/shared/markSweep.inline.hpp" |
| aoqi@0 | 30 | #include "utilities/stack.hpp" |
| aoqi@0 | 31 | |
| aoqi@0 | 32 | class PSAdaptiveSizePolicy; |
| aoqi@0 | 33 | class PSYoungGen; |
| aoqi@0 | 34 | class PSOldGen; |
| aoqi@0 | 35 | |
| aoqi@0 | 36 | class PSMarkSweep : public MarkSweep { |
| aoqi@0 | 37 | private: |
| aoqi@0 | 38 | static elapsedTimer _accumulated_time; |
| aoqi@0 | 39 | static jlong _time_of_last_gc; // ms |
| aoqi@0 | 40 | static CollectorCounters* _counters; |
| aoqi@0 | 41 | |
| aoqi@0 | 42 | // Closure accessors |
| aoqi@0 | 43 | static OopClosure* mark_and_push_closure() { return &MarkSweep::mark_and_push_closure; } |
| aoqi@0 | 44 | static KlassClosure* follow_klass_closure() { return &MarkSweep::follow_klass_closure; } |
| aoqi@0 | 45 | static VoidClosure* follow_stack_closure() { return (VoidClosure*)&MarkSweep::follow_stack_closure; } |
| aoqi@0 | 46 | static OopClosure* adjust_pointer_closure() { return (OopClosure*)&MarkSweep::adjust_pointer_closure; } |
| aoqi@0 | 47 | static KlassClosure* adjust_klass_closure() { return &MarkSweep::adjust_klass_closure; } |
| aoqi@0 | 48 | static BoolObjectClosure* is_alive_closure() { return (BoolObjectClosure*)&MarkSweep::is_alive; } |
| aoqi@0 | 49 | |
| aoqi@0 | 50 | debug_only(public:) // Used for PSParallelCompact debugging |
| aoqi@0 | 51 | // Mark live objects |
| aoqi@0 | 52 | static void mark_sweep_phase1(bool clear_all_softrefs); |
| aoqi@0 | 53 | // Calculate new addresses |
| aoqi@0 | 54 | static void mark_sweep_phase2(); |
| aoqi@0 | 55 | debug_only(private:) // End used for PSParallelCompact debugging |
| aoqi@0 | 56 | // Update pointers |
| aoqi@0 | 57 | static void mark_sweep_phase3(); |
| aoqi@0 | 58 | // Move objects to new positions |
| aoqi@0 | 59 | static void mark_sweep_phase4(); |
| aoqi@0 | 60 | |
| aoqi@0 | 61 | debug_only(public:) // Used for PSParallelCompact debugging |
| aoqi@0 | 62 | // Temporary data structures for traversal and storing/restoring marks |
| aoqi@0 | 63 | static void allocate_stacks(); |
| aoqi@0 | 64 | static void deallocate_stacks(); |
| aoqi@0 | 65 | static void set_ref_processor(ReferenceProcessor* rp) { // delete this method |
| aoqi@0 | 66 | _ref_processor = rp; |
| aoqi@0 | 67 | } |
| aoqi@0 | 68 | debug_only(private:) // End used for PSParallelCompact debugging |
| aoqi@0 | 69 | |
| aoqi@0 | 70 | // If objects are left in eden after a collection, try to move the boundary |
| aoqi@0 | 71 | // and absorb them into the old gen. Returns true if eden was emptied. |
| aoqi@0 | 72 | static bool absorb_live_data_from_eden(PSAdaptiveSizePolicy* size_policy, |
| aoqi@0 | 73 | PSYoungGen* young_gen, |
| aoqi@0 | 74 | PSOldGen* old_gen); |
| aoqi@0 | 75 | |
| aoqi@0 | 76 | // Reset time since last full gc |
| aoqi@0 | 77 | static void reset_millis_since_last_gc(); |
| aoqi@0 | 78 | |
| aoqi@0 | 79 | public: |
| aoqi@0 | 80 | static void invoke(bool clear_all_softrefs); |
| aoqi@0 | 81 | static bool invoke_no_policy(bool clear_all_softrefs); |
| aoqi@0 | 82 | |
| aoqi@0 | 83 | static void initialize(); |
| aoqi@0 | 84 | |
| aoqi@0 | 85 | // Public accessors |
| aoqi@0 | 86 | static elapsedTimer* accumulated_time() { return &_accumulated_time; } |
| aoqi@0 | 87 | static CollectorCounters* counters() { return _counters; } |
| aoqi@0 | 88 | |
| aoqi@0 | 89 | // Time since last full gc (in milliseconds) |
| aoqi@0 | 90 | static jlong millis_since_last_gc(); |
| aoqi@0 | 91 | }; |
| aoqi@0 | 92 | |
| aoqi@0 | 93 | #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSMARKSWEEP_HPP |
