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annotate graal/com.oracle.jvmci.hotspot/src/com/oracle/jvmci/hotspot/PrintStreamOption.java @ 21784:f4e1d958f1c3
[AMD64] Create AMD64 specific address nodes.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Mon, 08 Jun 2015 19:19:45 +0200 |
parents | f5b549811bac |
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rev | line source |
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1 /* |
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2 * Copyright (c) 2014, 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.jvmci.hotspot; |
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24 |
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25 import java.io.*; |
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26 import java.lang.management.*; |
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27 |
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28 import com.oracle.jvmci.options.*; |
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29 |
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30 /** |
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31 * An option that encapsulates and configures a print stream. |
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32 */ |
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33 public class PrintStreamOption extends OptionValue<String> { |
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34 |
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35 public PrintStreamOption() { |
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36 super(null); |
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37 } |
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38 |
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39 /** |
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40 * The print stream to which output will be written. |
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41 * |
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42 * Declared {@code volatile} to enable safe use of double-checked locking in |
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43 * {@link #getStream(CompilerToVM)} and {@link #setValue(Object)}. |
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44 */ |
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45 private volatile PrintStream ps; |
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46 |
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47 /** |
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48 * Replace any instance of %p with a an identifying name. Try to get it from the RuntimeMXBean |
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49 * name. |
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50 * |
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51 * @return the name of the file to log to |
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52 */ |
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53 private String getFilename() { |
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54 String name = getValue(); |
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55 if (name.contains("%p")) { |
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56 String runtimeName = ManagementFactory.getRuntimeMXBean().getName(); |
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57 try { |
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58 int index = runtimeName.indexOf('@'); |
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59 if (index != -1) { |
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60 long pid = Long.parseLong(runtimeName.substring(0, index)); |
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61 runtimeName = Long.toString(pid); |
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62 } |
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63 name = name.replaceAll("%p", runtimeName); |
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64 } catch (NumberFormatException e) { |
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65 |
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66 } |
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67 } |
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68 return name; |
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69 } |
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70 |
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71 /** |
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72 * Gets the print stream configured by this option. If no file is configured, the print stream |
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73 * will output to {@link CompilerToVM#writeDebugOutput(byte[], int, int)}. |
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74 */ |
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75 public PrintStream getStream(final CompilerToVM compilerToVM) { |
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76 if (ps == null) { |
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77 if (getValue() != null) { |
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78 synchronized (this) { |
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79 if (ps == null) { |
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80 try { |
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81 final boolean enableAutoflush = true; |
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82 ps = new PrintStream(new FileOutputStream(getFilename()), enableAutoflush); |
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83 /* Add the JVM and Java arguments to the log file to help identity it. */ |
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84 String inputArguments = String.join(" ", ManagementFactory.getRuntimeMXBean().getInputArguments()); |
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85 ps.println("VM Arguments: " + inputArguments); |
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86 String cmd = System.getProperty("sun.java.command"); |
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87 if (cmd != null) { |
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88 ps.println("sun.java.command=" + cmd); |
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89 } |
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90 } catch (FileNotFoundException e) { |
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91 throw new RuntimeException("couldn't open file: " + getValue(), e); |
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92 } |
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93 } |
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94 } |
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95 } else { |
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96 OutputStream ttyOut = new OutputStream() { |
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97 @Override |
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98 public void write(byte[] b, int off, int len) throws IOException { |
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99 if (b == null) { |
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100 throw new NullPointerException(); |
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101 } else if (off < 0 || off > b.length || len < 0 || (off + len) > b.length || (off + len) < 0) { |
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102 throw new IndexOutOfBoundsException(); |
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103 } else if (len == 0) { |
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104 return; |
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105 } |
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106 compilerToVM.writeDebugOutput(b, off, len); |
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107 } |
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108 |
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109 @Override |
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110 public void write(int b) throws IOException { |
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111 write(new byte[]{(byte) b}, 0, 1); |
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112 } |
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113 |
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114 @Override |
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115 public void flush() throws IOException { |
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116 compilerToVM.flushDebugOutput(); |
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117 } |
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118 }; |
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119 ps = new PrintStream(ttyOut); |
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120 } |
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121 } |
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122 return ps; |
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123 } |
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124 |
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125 @Override |
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126 public void setValue(Object v) { |
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127 if (ps != null) { |
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128 synchronized (this) { |
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129 if (ps != null) { |
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130 ps.close(); |
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131 ps = null; |
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132 } |
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133 } |
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134 } |
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135 super.setValue(v); |
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136 } |
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137 } |