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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/TruffleOptions.java @ 16779:e52ad0d3b7d6

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put some security sensitive actions into a privileged action
author Doug Simon <doug.simon@oracle.com>
date Tue, 12 Aug 2014 00:08:19 +0200
parents 76895499bc88
children afa70d3e8159
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1 /*
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2 * Copyright (c) 2012, 2012, 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. Oracle designates this
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8 * particular file as subject to the "Classpath" exception as provided
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9 * by Oracle in the LICENSE file that accompanied this code.
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10 *
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11 * This code is distributed in the hope that it will be useful, but WITHOUT
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 * version 2 for more details (a copy is included in the LICENSE file that
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15 * accompanied this code).
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16 *
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17 * You should have received a copy of the GNU General Public License version
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18 * 2 along with this work; if not, write to the Free Software Foundation,
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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20 *
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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22 * or visit www.oracle.com if you need additional information or have any
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23 * questions.
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24 */
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25 package com.oracle.truffle.api;
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26
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27 import java.security.*;
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28
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29 import com.oracle.truffle.api.nodes.*;
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30
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31 /**
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32 * Class containing general Truffle options.
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33 */
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34 public class TruffleOptions {
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35
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36 /**
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37 * Enables/disables the rewriting of traces in the Truffle runtime to stdout.
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38 * <p>
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39 * Can be set with {@code -Dtruffle.TraceRewrites=true}.
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40 */
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41 public static boolean TraceRewrites;
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42
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43 /**
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44 * Enables the generation of detailed rewrite reasons. Enabling this may introduce some overhead
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45 * for rewriting nodes.
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46 * <p>
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47 * Can be set with {@code -Dtruffle.DetailedRewriteReasons=true}.
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48 */
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49 public static final boolean DetailedRewriteReasons;
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50
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51 /**
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52 * Filters rewrites that do not contain the given string in the qualified name of the source or
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53 * target class hierarchy.
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54 * <p>
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55 * Can be set with {@code -Dtruffle.TraceRewritesFilterClass=name}.
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56 */
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57 public static String TraceRewritesFilterClass;
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58
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59 /**
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60 * Filters rewrites which does not contain the {@link NodeCost} in its source {@link NodeInfo}.
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61 * If no {@link NodeInfo} is defined the element is filtered if the filter value is set.
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62 * <p>
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63 * Can be set with
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64 * {@code -Dtruffle.TraceRewritesFilterFromCost=NONE|MONOMORPHIC|POLYMORPHIC|MEGAMORPHIC}.
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65 */
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66 public static NodeCost TraceRewritesFilterFromCost;
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67
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68 /**
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69 * Filters rewrites which does not contain the {@link NodeCost} in its target {@link NodeInfo}.
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70 * If no {@link NodeInfo} is defined the element is filtered if the filter value is set.
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71 * <p>
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72 * Can be set with
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73 * {@code -Dtruffle.TraceRewritesFilterToKind=UNINITIALIZED|SPECIALIZED|POLYMORPHIC|GENERIC}.
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74 */
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75 public static NodeCost TraceRewritesFilterToCost;
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76
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77 /**
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78 * Enables the dumping of Node creations and AST rewrites in JSON format.
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79 * <p>
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80 * Can be set with {@code -Dtruffle.TraceASTJSON=true}.
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81 */
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82 public static final boolean TraceASTJSON;
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83
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84 private static NodeCost parseNodeInfoKind(String kind) {
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85 if (kind == null) {
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86 return null;
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87 }
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88
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89 return NodeCost.valueOf(kind);
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90 }
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91
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92 static {
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93 final boolean[] values = {false, false};
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94 AccessController.doPrivileged(new PrivilegedAction<Void>() {
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95 public Void run() {
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96 TraceRewrites = Boolean.getBoolean("truffle.TraceRewrites");
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97 TraceRewritesFilterClass = System.getProperty("truffle.TraceRewritesFilterClass");
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98 TraceRewritesFilterFromCost = parseNodeInfoKind(System.getProperty("truffle.TraceRewritesFilterFromCost"));
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99 TraceRewritesFilterToCost = parseNodeInfoKind(System.getProperty("truffle.TraceRewritesFilterToCost"));
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100 values[0] = Boolean.getBoolean("truffle.DetailedRewriteReasons");
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101 values[1] = Boolean.getBoolean("truffle.TraceASTJSON");
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102 return null;
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103 }
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104 });
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105
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106 DetailedRewriteReasons = values[0];
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107 TraceASTJSON = values[1];
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108 }
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109 }