1 /* 2 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_GC_G1_G1FULLCOLLECTOR_HPP 26 #define SHARE_GC_G1_G1FULLCOLLECTOR_HPP 27 28 #include "gc/g1/g1FullGCCompactionPoint.hpp" 29 #include "gc/g1/g1FullGCMarker.hpp" 30 #include "gc/g1/g1FullGCOopClosures.hpp" 31 #include "gc/shared/preservedMarks.hpp" 32 #include "gc/shared/referenceProcessor.hpp" 33 #include "gc/shared/taskqueue.hpp" 34 #include "memory/allocation.hpp" 35 36 class AbstractGangTask; 37 class G1CMBitMap; 38 class G1FullGCMarker; 39 class G1FullGCScope; 40 class G1FullGCCompactionPoint; 41 class ReferenceProcessor; 42 43 // The G1FullCollector holds data associated with the current Full GC. 44 class G1FullCollector : StackObj { 45 G1FullGCScope* _scope; 46 uint _num_workers; 47 G1FullGCMarker** _markers; 48 G1FullGCCompactionPoint** _compaction_points; 49 G1CMBitMap* _mark_bitmap; 50 OopQueueSet _oop_queue_set; 51 ObjArrayTaskQueueSet _array_queue_set; 52 PreservedMarksSet _preserved_marks_set; 53 ReferenceProcessor* _reference_processor; 54 G1FullGCCompactionPoint _serial_compaction_point; 55 56 G1IsAliveClosure _is_alive; 57 ReferenceProcessorIsAliveMutator _is_alive_mutator; 58 59 public: 60 G1FullCollector(G1FullGCScope* scope, 61 ReferenceProcessor* reference_processor, 62 G1CMBitMap* mark_bitmap, 63 uint workers); 64 ~G1FullCollector(); 65 66 void prepare_collection(); 67 void collect(); 68 void complete_collection(); 69 70 G1FullGCScope* scope() { return _scope; } 71 uint workers() { return _num_workers; } 72 G1FullGCMarker* marker(uint id) { return _markers[id]; } 73 G1FullGCCompactionPoint* compaction_point(uint id) { return _compaction_points[id]; } 74 G1CMBitMap* mark_bitmap() { return _mark_bitmap; } 75 OopQueueSet* oop_queue_set() { return &_oop_queue_set; } 76 ObjArrayTaskQueueSet* array_queue_set() { return &_array_queue_set; } 77 PreservedMarksSet* preserved_mark_set() { return &_preserved_marks_set; } 78 ReferenceProcessor* reference_processor() { return _reference_processor; } 79 G1FullGCCompactionPoint* serial_compaction_point() { return &_serial_compaction_point; } 80 81 private: 82 void phase1_mark_live_objects(); 83 void phase2_prepare_compaction(); 84 void phase3_adjust_pointers(); 85 void phase4_do_compaction(); 86 87 void restore_marks(); 88 void verify_after_marking(); 89 90 void run_task(AbstractGangTask* task); 91 92 // Prepare compaction extension support. 93 void prepare_compaction_ext(); 94 void prepare_compaction_common(); 95 }; 96 97 98 #endif // SHARE_GC_G1_G1FULLCOLLECTOR_HPP