Mercurial > hg > graal-compiler
view graal/com.oracle.graal.truffle/src/com/oracle/graal/truffle/OptimizedAssumption.java @ 16512:abe7128ca473
SL: upgrade source attribution
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
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date | Mon, 14 Jul 2014 16:51:41 -0700 |
parents | 7bc92bdfd322 |
children | 2b7e583cfe67 |
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/* * Copyright (c) 2013, 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. */ package com.oracle.graal.truffle; import java.lang.ref.*; import com.oracle.graal.api.code.*; import com.oracle.truffle.api.impl.*; import com.oracle.truffle.api.nodes.*; public final class OptimizedAssumption extends AbstractAssumption { private static class Entry { WeakReference<InstalledCode> installedCode; long version; Entry next; } private Entry first; public OptimizedAssumption(String name) { super(name); } @Override public void check() throws InvalidAssumptionException { if (!isValid) { throw new InvalidAssumptionException(); } } @Override public synchronized void invalidate() { if (isValid) { Entry e = first; while (e != null) { InstalledCode installedCode = e.installedCode.get(); if (installedCode != null && installedCode.getVersion() == e.version) { installedCode.invalidate(); } e = e.next; } first = null; isValid = false; } } public synchronized void registerInstalledCode(InstalledCode installedCode) { if (isValid) { Entry e = new Entry(); e.installedCode = new WeakReference<>(installedCode); e.version = installedCode.getVersion(); e.next = first; first = e; } else { installedCode.invalidate(); } } @Override public boolean isValid() { return isValid; } }