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annotate graal/GraalCompiler/src/com/sun/c1x/debug/GraphvizPrinterObserver.java @ 2691:4149feada801

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GraphvizPrinterObserver: close output stream also in case of exception
author Peter Hofer <peter.hofer@jku.at>
date Wed, 18 May 2011 11:27:10 +0200
parents 6ab73784566a
children 79590d6b4a7c
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1 /*
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2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.sun.c1x.debug;
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24
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25 import java.io.*;
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26
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27 import com.oracle.graal.graph.*;
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28 import com.oracle.graal.graph.vis.*;
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29 import com.sun.c1x.*;
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30 import com.sun.c1x.observer.*;
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31 import com.sun.c1x.value.*;
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32
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33 /**
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34 * Observes compilation events and uses {@link GraphvizPrinter} to produce a control flow graph in the DOT language
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35 * which can be visualized with Graphviz.
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36 *
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37 * @author Peter Hofer
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38 */
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39 public class GraphvizPrinterObserver implements CompilationObserver {
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40
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41 private final boolean pdf;
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42 private int n;
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43
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44 public GraphvizPrinterObserver(boolean pdf) {
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45 this.pdf = pdf;
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46 }
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47
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48 public void compilationStarted(CompilationEvent event) {
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49 n = 0;
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50 }
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51
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52 public void compilationFinished(CompilationEvent event) {
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53 }
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54
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55 public void compilationEvent(CompilationEvent event) {
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56 if (event.getStartBlock() != null && !TTY.isSuppressed()) {
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57 Graph graph = event.getStartBlock().graph();
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58
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59 String name = event.getMethod().holder().name();
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60 name = name.substring(1, name.length() - 1).replace('/', '.');
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61 name = name + "." + event.getMethod().name();
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62 String filename = name + "_" + (n++) + "_" + event.getLabel();
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63
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64 OutputStream out = null;
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65 try {
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66 if (pdf) {
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67 ByteArrayOutputStream buffer = new ByteArrayOutputStream();
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68 GraphvizPrinter printer = new GraphvizPrinter(buffer);
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69 if (C1XOptions.OmitDOTFrameStates) {
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70 printer.addOmittedClass(FrameState.class);
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71 }
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72 printer.begin(name);
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73 printer.print(graph, true);
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74 printer.end();
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75
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76 out = new FileOutputStream(filename + ".pdf");
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77 GraphvizRunner.process(GraphvizRunner.DOT_LAYOUT, new ByteArrayInputStream(buffer.toByteArray()), out, "pdf");
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78 } else {
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79 out = new FileOutputStream(filename + ".gv");
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80
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81 GraphvizPrinter printer = new GraphvizPrinter(out);
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82 if (C1XOptions.OmitDOTFrameStates) {
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83 printer.addOmittedClass(FrameState.class);
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84 }
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85 printer.begin(name);
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86 printer.print(graph, true);
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87 printer.end();
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88 }
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89 } catch (IOException e) {
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90 e.printStackTrace();
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91 } finally {
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92 if (out != null) {
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93 try {
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94 out.close();
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95 } catch (IOException e) {
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96 }
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97 }
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98 }
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99 }
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100 }
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101 }