g1SurvivorRegions.cpp revision 11132:258cc3802222
1/* 2 * Copyright (c) 2015, 2016, 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 31G1SurvivorRegions::G1SurvivorRegions() : _regions(new (ResourceObj::C_HEAP, mtGC) GrowableArray<HeapRegion*>(8, true, mtGC)) {} 32 33void G1SurvivorRegions::add(HeapRegion* hr) { 34 assert(hr->is_survivor(), "should be flagged as survivor region"); 35 _regions->append(hr); 36} 37 38uint G1SurvivorRegions::length() const { 39 return (uint)_regions->length(); 40} 41 42void G1SurvivorRegions::convert_to_eden() { 43 for (GrowableArrayIterator<HeapRegion*> it = _regions->begin(); 44 it != _regions->end(); 45 ++it) { 46 HeapRegion* hr = *it; 47 hr->set_eden_pre_gc(); 48 } 49 clear(); 50} 51 52void G1SurvivorRegions::clear() { 53 _regions->clear(); 54} 55 56