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 #include "precompiled.hpp" 26 #include "gc/g1/g1SurvivorRegions.hpp" 27 #include "gc/g1/heapRegion.hpp" 28 #include "utilities/growableArray.hpp" 29 #include "utilities/debug.hpp" 30 31 G1SurvivorRegions::G1SurvivorRegions() : 32 _regions(new (ResourceObj::C_HEAP, mtGC) GrowableArray<HeapRegion*>(8, true, mtGC)), 33 _used_bytes(0) {} 34 35 void G1SurvivorRegions::add(HeapRegion* hr) { 36 assert(hr->is_survivor(), "should be flagged as survivor region"); 37 _regions->append(hr); 38 } 39 40 uint G1SurvivorRegions::length() const { 41 return (uint)_regions->length(); 42 } 43 44 void G1SurvivorRegions::convert_to_eden() { 45 for (GrowableArrayIterator<HeapRegion*> it = _regions->begin(); 46 it != _regions->end(); 47 ++it) { 48 HeapRegion* hr = *it; 49 hr->set_eden_pre_gc(); 50 } 51 clear(); 52 } 53 54 void G1SurvivorRegions::clear() { 55 _regions->clear(); 56 _used_bytes = 0; 57 } 58 59 void G1SurvivorRegions::add_used_bytes(size_t used_bytes) { 60 _used_bytes += used_bytes; 61 }