1 /* 2 * Copyright (c) 2018, Red Hat, Inc. All rights reserved. 3 * 4 * This code is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 only, as 6 * published by the Free Software Foundation. 7 * 8 * This code is distributed in the hope that it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 11 * version 2 for more details (a copy is included in the LICENSE file that 12 * accompanied this code). 13 * 14 * You should have received a copy of the GNU General Public License version 15 * 2 along with this work; if not, write to the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 17 * 18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 19 * or visit www.oracle.com if you need additional information or have any 20 * questions. 21 * 22 */ 23 24 #ifndef SHARE_VM_GC_SHENANDOAH_HEURISTICS_SHENANDOAHTRAVERSALHEURISTICS_HPP 25 #define SHARE_VM_GC_SHENANDOAH_HEURISTICS_SHENANDOAHTRAVERSALHEURISTICS_HPP 26 27 #include "gc/shenandoah/shenandoahHeuristics.hpp" 28 29 class ShenandoahTraversalHeuristics : public ShenandoahHeuristics { 30 private: 31 uint64_t _last_cset_select; 32 33 protected: 34 virtual void choose_collection_set_from_regiondata(ShenandoahCollectionSet* set, 35 RegionData* data, size_t data_size, 36 size_t free); 37 38 public: 39 ShenandoahTraversalHeuristics(); 40 41 virtual bool should_start_normal_gc() const; 42 43 virtual bool is_experimental(); 44 45 virtual bool is_diagnostic(); 46 47 virtual bool can_do_traversal_gc(); 48 49 virtual const char* name(); 50 51 virtual void choose_collection_set(ShenandoahCollectionSet* collection_set); 52 53 virtual bool should_start_traversal_gc(); 54 }; 55 56 #endif // SHARE_VM_GC_SHENANDOAH_HEURISTICS_SHENANDOAHTRAVERSALHEURISTICS_HPP