1 /* 2 * Copyright (c) 2018, 2019, Red Hat, Inc. All rights reserved. 3 * Copyright Amazon.com Inc. or its affiliates. All Rights Reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #ifndef SHARE_GC_SHENANDOAH_HEURISTICS_SHENANDOAHAGGRESSIVEHEURISTICS_HPP 27 #define SHARE_GC_SHENANDOAH_HEURISTICS_SHENANDOAHAGGRESSIVEHEURISTICS_HPP 28 29 #include "gc/shenandoah/heuristics/shenandoahHeuristics.hpp" 30 31 /* 32 * This is a diagnostic heuristic that continuously runs collections 33 * cycles and adds every region with any garbage to the collection set. 34 */ 35 class ShenandoahAggressiveHeuristics : public ShenandoahHeuristics { 36 public: 37 ShenandoahAggressiveHeuristics(ShenandoahSpaceInfo* space_info); 38 39 virtual void choose_collection_set_from_regiondata(ShenandoahCollectionSet* cset, 40 RegionData* data, size_t size, 41 size_t free); 42 43 virtual bool should_start_gc(); 44 45 virtual bool should_unload_classes(); 46 47 virtual const char* name() { return "Aggressive"; } 48 virtual bool is_diagnostic() { return true; } 49 virtual bool is_experimental() { return false; } 50 }; 51 52 #endif // SHARE_GC_SHENANDOAH_HEURISTICS_SHENANDOAHAGGRESSIVEHEURISTICS_HPP