1 /* 2 * Copyright (c) 2015, 2019, 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_G1SURVIVORREGIONS_HPP 26 #define SHARE_GC_G1_G1SURVIVORREGIONS_HPP 27 28 #include "gc/g1/g1RegionsOnNodes.hpp" 29 #include "runtime/globals.hpp" 30 31 template <typename T> 32 class GrowableArray; 33 class HeapRegion; 34 35 class G1SurvivorRegions { 36 private: 37 GrowableArray<HeapRegion*>* _regions; 38 volatile size_t _used_bytes; 39 G1RegionsOnNodes _regions_on_node; 40 41 public: 42 G1SurvivorRegions(); 43 44 virtual uint add(HeapRegion* hr); 45 46 void convert_to_eden(); 47 48 void clear(); 49 50 uint length() const; 51 uint regions_on_node(uint node_index) const; 52 53 const GrowableArray<HeapRegion*>* regions() const { 54 return _regions; 55 } 56 57 // Used bytes of all survivor regions. 58 size_t used_bytes() const { return _used_bytes; } 59 60 void add_used_bytes(size_t used_bytes); 61 }; 62 63 #endif // SHARE_GC_G1_G1SURVIVORREGIONS_HPP