diff -r 3cfab71d6c81 -r 5caa1d5f74c1 src/hotspot/share/gc/g1/g1FullCollector.hpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/hotspot/share/gc/g1/g1FullCollector.hpp Tue Nov 14 11:33:23 2017 +0100 @@ -0,0 +1,98 @@ +/* + * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + * + */ + +#ifndef SHARE_GC_G1_G1FULLCOLLECTOR_HPP +#define SHARE_GC_G1_G1FULLCOLLECTOR_HPP + +#include "gc/g1/g1FullGCCompactionPoint.hpp" +#include "gc/g1/g1FullGCMarker.hpp" +#include "gc/g1/g1FullGCOopClosures.hpp" +#include "gc/shared/preservedMarks.hpp" +#include "gc/shared/referenceProcessor.hpp" +#include "gc/shared/taskqueue.hpp" +#include "memory/allocation.hpp" + +class AbstractGangTask; +class G1CMBitMap; +class G1FullGCMarker; +class G1FullGCScope; +class G1FullGCCompactionPoint; +class ReferenceProcessor; + +// The G1FullCollector holds data associated with the current Full GC. +class G1FullCollector : StackObj { + G1FullGCScope* _scope; + uint _num_workers; + G1FullGCMarker** _markers; + G1FullGCCompactionPoint** _compaction_points; + G1CMBitMap* _mark_bitmap; + OopQueueSet _oop_queue_set; + ObjArrayTaskQueueSet _array_queue_set; + PreservedMarksSet _preserved_marks_set; + ReferenceProcessor* _reference_processor; + G1FullGCCompactionPoint _serial_compaction_point; + + G1IsAliveClosure _is_alive; + ReferenceProcessorIsAliveMutator _is_alive_mutator; + +public: + G1FullCollector(G1FullGCScope* scope, + ReferenceProcessor* reference_processor, + G1CMBitMap* mark_bitmap, + uint workers); + ~G1FullCollector(); + + void prepare_collection(); + void collect(); + void complete_collection(); + + G1FullGCScope* scope() { return _scope; } + uint workers() { return _num_workers; } + G1FullGCMarker* marker(uint id) { return _markers[id]; } + G1FullGCCompactionPoint* compaction_point(uint id) { return _compaction_points[id]; } + G1CMBitMap* mark_bitmap() { return _mark_bitmap; } + OopQueueSet* oop_queue_set() { return &_oop_queue_set; } + ObjArrayTaskQueueSet* array_queue_set() { return &_array_queue_set; } + PreservedMarksSet* preserved_mark_set() { return &_preserved_marks_set; } + ReferenceProcessor* reference_processor() { return _reference_processor; } + G1FullGCCompactionPoint* serial_compaction_point() { return &_serial_compaction_point; } + +private: + void phase1_mark_live_objects(); + void phase2_prepare_compaction(); + void phase3_adjust_pointers(); + void phase4_do_compaction(); + + void restore_marks(); + void verify_after_marking(); + + void run_task(AbstractGangTask* task); + + // Prepare compaction extension support. + void prepare_compaction_ext(); + void prepare_compaction_common(); +}; + + +#endif // SHARE_GC_G1_G1FULLCOLLECTOR_HPP