Mercurial > hg > truffle
view graal/com.oracle.max.criutils/src/com/oracle/max/criutils/SnapshotProfilingInfo.java @ 5563:6a2671066204
added NewInstanceSnippets for lowering NewInstanceNodes (currently disabled by default)
added Word type and WordTypeRewriterPhase to support programming against machine word values in snippets without duplicating the code for 32 and 64 bit platforms
added GraphUtil.approxSourceLocation() utility method for getting an approximate source code location for a node
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 11 Jun 2012 15:39:57 +0200 |
parents | b6617d13ea44 |
children | 4d7175cf3526 |
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/* * Copyright (c) 2012, 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.max.criutils; import java.io.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; /** * A profiling info snapshot that can be {@linkplain #save(File, File) saved} to * and {@linkplain #load(File, CodeCacheProvider) loaded} from a file. */ public class SnapshotProfilingInfo implements ProfilingInfo, Serializable { private static final long serialVersionUID = -5837615128782960391L; private final double[] branchTaken; private final double[][] switches; private final JavaTypeProfile[] typeProfiles; private final ExceptionSeen[] exceptions; private final int[] executions; private final int[] deopts; public SnapshotProfilingInfo(ProfilingInfo other) { int codeSize = other.codeSize(); branchTaken = new double[codeSize]; switches = new double[codeSize][]; typeProfiles = new JavaTypeProfile[codeSize]; exceptions = new ExceptionSeen[codeSize]; executions = new int[codeSize]; deopts = new int[DeoptimizationReason.values().length]; for (int bci = 0; bci < codeSize; bci++) { executions[bci] = other.getExecutionCount(bci); exceptions[bci] = other.getExceptionSeen(bci); branchTaken[bci] = other.getBranchTakenProbability(bci); switches[bci] = other.getSwitchProbabilities(bci); typeProfiles[bci] = other.getTypeProfile(bci); } for (DeoptimizationReason reason: DeoptimizationReason.values()) { deopts[reason.ordinal()] = other.getDeoptimizationCount(reason); } } @Override public int codeSize() { return branchTaken.length; } public double getBranchTakenProbability(int bci) { return bci < branchTaken.length ? branchTaken[bci] : -1D; } public double[] getSwitchProbabilities(int bci) { return bci < switches.length ? switches[bci] : null; } public JavaTypeProfile getTypeProfile(int bci) { return bci < typeProfiles.length ? typeProfiles[bci] : null; } public ExceptionSeen getExceptionSeen(int bci) { return bci < exceptions.length ? exceptions[bci] : ExceptionSeen.NOT_SUPPORTED; } public int getExecutionCount(int bci) { return bci < executions.length ? executions[bci] : -1; } public int getDeoptimizationCount(DeoptimizationReason reason) { return deopts[reason.ordinal()]; } @Override public String toString() { return CodeUtil.profileToString(this, null, "; "); } /** * Deserializes a profile snapshot from a file. * * @param file a file created by {@link #save(File, File)} * @param runtime the runtime used to resolve {@link ResolvedJavaType}s during deserialization * @return * @throws ClassNotFoundException * @throws IOException */ public static SnapshotProfilingInfo load(File file, CodeCacheProvider runtime) throws ClassNotFoundException, IOException { SnapshotProfilingInfo.SnapshotObjectInputStream ois = new SnapshotObjectInputStream(new BufferedInputStream(new FileInputStream(file), (int) file.length()), runtime); try { return (SnapshotProfilingInfo) ois.readObject(); } finally { ois.close(); } } /** * Serializes this snapshot to a file. * * @param file the file to which this snapshot is serialized * @param txtFile * @throws IOException */ public void save(File file, File txtFile) throws IOException { SnapshotProfilingInfo.SnapshotObjectOutputStream oos = new SnapshotObjectOutputStream(new FileOutputStream(file)); try { oos.writeObject(this); } finally { oos.close(); } if (txtFile != null) { PrintStream out = new PrintStream(txtFile); try { out.println(CodeUtil.profileToString(this, null, CodeUtil.NEW_LINE)); } finally { out.close(); } } } static class RiResolvedTypePlaceholder implements Serializable { private static final long serialVersionUID = -5149982457010023916L; final Class javaMirror; public RiResolvedTypePlaceholder(Class javaMirror) { this.javaMirror = javaMirror; } } static class SnapshotObjectOutputStream extends ObjectOutputStream { public SnapshotObjectOutputStream(OutputStream out) throws IOException { super(out); enableReplaceObject(true); } @Override protected Object replaceObject(Object obj) throws IOException { if (obj instanceof ResolvedJavaType) { return new RiResolvedTypePlaceholder(((ResolvedJavaType) obj).toJava()); } return obj; } } static class SnapshotObjectInputStream extends ObjectInputStream { private final CodeCacheProvider runtime; public SnapshotObjectInputStream(InputStream in, CodeCacheProvider runtime) throws IOException { super(in); enableResolveObject(true); this.runtime = runtime; } @Override protected Object resolveObject(Object obj) throws IOException { if (obj instanceof SnapshotProfilingInfo.RiResolvedTypePlaceholder) { ResolvedJavaType type = runtime.getResolvedJavaType(((SnapshotProfilingInfo.RiResolvedTypePlaceholder) obj).javaMirror); return type; } return obj; } } }