Mercurial > hg > graal-compiler
view src/share/vm/gc_implementation/shared/liveRange.hpp @ 10405:f2110083203d
8005849: JEP 167: Event-Based JVM Tracing
Reviewed-by: acorn, coleenp, sla
Contributed-by: Karen Kinnear <karen.kinnear@oracle.com>, Bengt Rutisson <bengt.rutisson@oracle.com>, Calvin Cheung <calvin.cheung@oracle.com>, Erik Gahlin <erik.gahlin@oracle.com>, Erik Helin <erik.helin@oracle.com>, Jesper Wilhelmsson <jesper.wilhelmsson@oracle.com>, Keith McGuigan <keith.mcguigan@oracle.com>, Mattias Tobiasson <mattias.tobiasson@oracle.com>, Markus Gronlund <markus.gronlund@oracle.com>, Mikael Auno <mikael.auno@oracle.com>, Nils Eliasson <nils.eliasson@oracle.com>, Nils Loodin <nils.loodin@oracle.com>, Rickard Backman <rickard.backman@oracle.com>, Staffan Larsen <staffan.larsen@oracle.com>, Stefan Karlsson <stefan.karlsson@oracle.com>, Yekaterina Kantserova <yekaterina.kantserova@oracle.com>
author | sla |
---|---|
date | Mon, 10 Jun 2013 11:30:51 +0200 |
parents | f95d63e2154a |
children |
line wrap: on
line source
/* * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef SHARE_VM_GC_IMPLEMENTATION_SHARED_LIVERANGE_HPP #define SHARE_VM_GC_IMPLEMENTATION_SHARED_LIVERANGE_HPP #include "memory/memRegion.hpp" #include "utilities/copy.hpp" // This is a shared helper class used during phase 3 and 4 to move all the objects // Dead regions in a Space are linked together to keep track of the live regions // so that the live data can be traversed quickly without having to look at each // object. class LiveRange: public MemRegion { public: LiveRange(HeapWord* bottom, HeapWord* top): MemRegion(bottom, top) {} void set_end(HeapWord* e) { assert(e >= start(), "should be a non-zero range"); MemRegion::set_end(e); } void set_word_size(size_t ws) { assert(ws >= 0, "should be a non-zero range"); MemRegion::set_word_size(ws); } LiveRange * next() { return (LiveRange *) end(); } void move_to(HeapWord* destination) { Copy::aligned_conjoint_words(start(), destination, word_size()); } }; #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_LIVERANGE_HPP