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annotate graal/com.oracle.max.cri/src/com/oracle/max/cri/ci/CiCodePos.java @ 4558:3706975946e4

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Make graph dumping a bit more robust when there is no method, enable debug in the startCompiler method, add context and scope for snippets installation Made IGV display graphs even if some edges are problematic When schedule failed don't use it
author Gilles Duboscq <duboscq@ssw.jku.at>
date Fri, 10 Feb 2012 02:22:23 +0100
parents aaac4894175c
children 51111665eda6
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1 /*
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2 * Copyright (c) 2009, 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.oracle.max.cri.ci;
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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.max.cri.ri.*;
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28
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29 /**
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30 * Represents a code position, that is, a chain of inlined methods with bytecode
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31 * locations, that is communicated from the compiler to the runtime system. A code position
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32 * can be used by the runtime system to reconstruct a source-level stack trace
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33 * for exceptions and to create {@linkplain CiFrame frames} for deoptimization.
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34 */
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35 public class CiCodePos implements Serializable {
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36 /**
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37 *
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38 */
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39 private static final long serialVersionUID = 8633885274526033515L;
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40
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41 /**
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42 * The position where this position has been called, {@code null} if none.
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43 */
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44 public final CiCodePos caller;
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45
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46 /**
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47 * The runtime interface method for this position.
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48 */
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49 public final RiResolvedMethod method;
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50
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51 /**
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52 * The location within the method, as a bytecode index. The constant
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53 * {@code -1} may be used to indicate the location is unknown, for example
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54 * within code synthesized by the compiler.
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55 */
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56 public final int bci;
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57
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58 /**
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59 * Constructs a new object representing a given parent/caller, a given method, and a given BCI.
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60 *
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61 * @param caller the parent position
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62 * @param method the method
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63 * @param bci a BCI within the method
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64 */
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65 public CiCodePos(CiCodePos caller, RiResolvedMethod method, int bci) {
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66 assert method != null;
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67 this.caller = caller;
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68 this.method = method;
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69 this.bci = bci;
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70 }
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71
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72 /**
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73 * Converts this code position to a string representation.
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74 * @return a string representation of this code position
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75 */
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76 @Override
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77 public String toString() {
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78 return CiUtil.append(new StringBuilder(100), this).toString();
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79 }
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80
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81 /**
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82 * Deep equality test.
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83 */
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84 @Override
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85 public boolean equals(Object obj) {
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86 if (obj == this) {
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87 return true;
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88 }
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89 if (obj instanceof CiCodePos) {
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90 CiCodePos other = (CiCodePos) obj;
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91 if (other.method.equals(method) && other.bci == bci) {
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92 if (caller == null) {
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93 return other.caller == null;
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94 }
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95 return caller.equals(other.caller);
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96 }
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97 }
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98 return false;
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99 }
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100
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101 @Override
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102 public int hashCode() {
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103 return bci;
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104 }
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105 }