Mercurial > hg > graal-compiler
view graal/com.oracle.graal.truffle/src/com/oracle/graal/truffle/OptimizedAssumption.java @ 17560:562643f42b65
Merge with jdk8u5-b13
author | Gilles Duboscq <duboscq@ssw.jku.at> |
---|---|
date | Wed, 15 Oct 2014 12:04:20 +0200 |
parents | f7ba2423fbc3 |
children | 850b874592fa |
line wrap: on
line source
/* * 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 static com.oracle.graal.truffle.TruffleCompilerOptions.*; import java.lang.ref.*; import java.util.*; import java.util.stream.*; import com.oracle.graal.api.code.*; import com.oracle.graal.debug.*; 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) { boolean invalidatedInstalledCode = false; Entry e = first; while (e != null) { InstalledCode installedCode = e.installedCode.get(); if (installedCode != null && installedCode.getVersion() == e.version) { installedCode.invalidate(); invalidatedInstalledCode = true; if (TraceTruffleAssumptions.getValue()) { logInvalidatedInstalledCode(installedCode); } } e = e.next; } first = null; isValid = false; if (TraceTruffleAssumptions.getValue()) { if (invalidatedInstalledCode) { logStackTrace(); } } } } 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; } private void logInvalidatedInstalledCode(InstalledCode installedCode) { TTY.out().out().printf("assumption '%s' invalidated installed code '%s'\n", name, installedCode); } private static void logStackTrace() { final int skip = 1; final int limit = TraceTruffleStackTraceLimit.getValue(); StackTraceElement[] stackTrace = new Throwable().getStackTrace(); String suffix = stackTrace.length > skip + limit ? "\n ..." : ""; TTY.out().out().println(Arrays.stream(stackTrace).skip(skip).limit(limit).map(StackTraceElement::toString).collect(Collectors.joining("\n ", "", suffix))); } }