0N/A/*
1879N/A * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
0N/A * published by the Free Software Foundation.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
1472N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1472N/A * or visit www.oracle.com if you need additional information or have any
1472N/A * questions.
0N/A *
0N/A */
0N/A
1879N/A#ifndef SHARE_VM_GC_IMPLEMENTATION_SHARED_LIVERANGE_HPP
1879N/A#define SHARE_VM_GC_IMPLEMENTATION_SHARED_LIVERANGE_HPP
1879N/A
1879N/A#include "memory/memRegion.hpp"
1879N/A#include "utilities/copy.hpp"
1879N/A
0N/A// This is a shared helper class used during phase 3 and 4 to move all the objects
0N/A// Dead regions in a Space are linked together to keep track of the live regions
0N/A// so that the live data can be traversed quickly without having to look at each
0N/A// object.
0N/A
0N/Aclass LiveRange: public MemRegion {
0N/Apublic:
0N/A LiveRange(HeapWord* bottom, HeapWord* top): MemRegion(bottom, top) {}
0N/A
0N/A void set_end(HeapWord* e) {
0N/A assert(e >= start(), "should be a non-zero range");
0N/A MemRegion::set_end(e);
0N/A }
0N/A void set_word_size(size_t ws) {
0N/A assert(ws >= 0, "should be a non-zero range");
0N/A MemRegion::set_word_size(ws);
0N/A }
0N/A
0N/A LiveRange * next() { return (LiveRange *) end(); }
0N/A
0N/A void move_to(HeapWord* destination) {
0N/A Copy::aligned_conjoint_words(start(), destination, word_size());
0N/A }
0N/A};
1879N/A
1879N/A#endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_LIVERANGE_HPP