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annotate scripts/java/org/octave/Octave.java @ 20830:b65888ec820e draft default tip gccjit

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dmalcom gcc jit import
author Stefan Mahr <dac922@gmx.de>
date Fri, 27 Feb 2015 16:59:36 +0100
parents d63878346099
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2
17744
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3 Copyright (C) 2007, 2013 Michael Goffioul
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by
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9 the Free Software Foundation; either version 3 of the License, or (at
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10 your option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but
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13 WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 General Public License for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 package org.octave;
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24
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25 import java.util.*;
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26
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27 public class Octave
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28 {
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29 private static Object notifyObject = null;
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30 private static Object[] args = null;
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31 private static LinkedList invokeList = new LinkedList ();
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32 private static LinkedList waitList = new LinkedList ();
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33
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34 public native static boolean call (String name, Object[] argin, Object[] argout);
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35 public native static void doInvoke (int ID, Object[] args);
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36 public native static void doEvalString (String cmd);
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37 public native static boolean needThreadedInvokation ();
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38
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39 public static void checkPendingAction ()
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40 {
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41 if (notifyObject != null)
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42 {
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43 synchronized (notifyObject)
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44 {
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45 if (notifyObject instanceof OctaveReference)
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46 doInvoke (((OctaveReference)notifyObject).getID (), args);
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47 else if (notifyObject instanceof String)
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48 doEvalString ((String)notifyObject);
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49 notifyObject.notifyAll ();
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50 }
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51 notifyObject = null;
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52 args = null;
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53 }
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54
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55 Object obj;
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56 Object[] objArgs;
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57
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58 while (true)
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59 {
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60 obj = null;
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61 objArgs = null;
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62
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63 synchronized (invokeList)
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64 {
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65 if (invokeList.size () > 0)
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66 {
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67 obj = invokeList.remove ();
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68 if (obj instanceof OctaveReference)
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69 objArgs = (Object[])invokeList.remove ();
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70 }
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71 }
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72
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73 if (obj != null)
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74 {
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75 if (obj instanceof Runnable)
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76 ((Runnable)obj).run ();
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77 else if (obj instanceof OctaveReference)
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78 doInvoke (((OctaveReference)obj).getID (), objArgs);
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79 else if (obj instanceof String)
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80 doEvalString ((String)obj);
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81 }
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82 else
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83 break;
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84 }
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85 /*
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86 synchronized (invokeList)
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87 {
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88 while (invokeList.size () > 0)
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89 {
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90 Object obj = invokeList.remove ();
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91 if (obj instanceof Runnable)
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92 ((Runnable)obj).run ();
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93 if (obj instanceof OctaveReference)
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94 {
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95 Object[] objArgs = (Object[])invokeList.remove ();
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96 doInvoke (((OctaveReference)obj).getID (), objArgs);
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97 }
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98 else if (obj instanceof String)
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99 doEvalString ((String)obj);
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100 }
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101 }
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102 */
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103 }
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104
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105 private static void checkWaitState ()
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106 {
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107 if (waitList.size () > 0)
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108 {
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109 Object wObj = waitList.getFirst ();
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110 synchronized (wObj)
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111 {
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112 wObj.notifyAll ();
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113 }
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114 }
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115 }
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116
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117 public static void invokeAndWait (OctaveReference ref, Object[] invokeArgs)
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118 {
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119 if (needThreadedInvokation ())
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120 {
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121 synchronized (ref)
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122 {
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123 notifyObject = ref;
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124 args = invokeArgs;
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125 try { checkWaitState (); ref.wait (); }
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126 catch (InterruptedException e) {}
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127 }
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128 }
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129 else
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130 doInvoke (ref.getID (), invokeArgs);
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131 }
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132
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133 public static void evalAndWait (String cmd)
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134 {
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135 if (needThreadedInvokation ())
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136 {
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137 synchronized (cmd)
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138 {
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139 notifyObject = cmd;
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140 args = null;
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141 try { checkWaitState (); cmd.wait (); }
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142 catch (InterruptedException e) {}
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143 }
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144 }
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145 else
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146 doEvalString (cmd);
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147 }
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148
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149 public static void invokeLater (Runnable r)
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150 {
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151 if (needThreadedInvokation ())
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152 synchronized (invokeList)
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153 {
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154 invokeList.add (r);
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155 checkWaitState ();
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156 }
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157 else
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158 r.run ();
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159 }
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160
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161 public static void invokeLater (OctaveReference ref, Object[] invokeArgs)
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162 {
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163 if (needThreadedInvokation ())
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164 synchronized (invokeList)
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165 {
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166 invokeList.add (ref);
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167 invokeList.add (invokeArgs);
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168 checkWaitState ();
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169 }
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170 else
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171 doInvoke (ref.getID (), invokeArgs);
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172 }
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173
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174 public static void evalLater (String cmd)
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175 {
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176 if (needThreadedInvokation ())
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177 synchronized (invokeList)
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178 {
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179 invokeList.add (cmd);
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180 checkWaitState ();
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181 }
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182 else
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183 doEvalString (cmd);
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184 }
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185
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186 public static void waitFor (Object wObj)
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187 {
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188 waitList.add (0, wObj);
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189 synchronized (wObj)
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190 {
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191 while (waitList.size () > 0 && waitList.getFirst () == wObj)
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192 {
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193 try { wObj.wait (); }
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194 catch (InterruptedException e) {}
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195 checkPendingAction ();
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196 }
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197 }
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198 }
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199
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200 public static void endWaitFor (Object obj)
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201 {
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202 boolean isCurrentWaitObject = (waitList.size () > 0 && waitList.getFirst () == obj);
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203
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204 waitList.remove (obj);
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205 if (needThreadedInvokation () && isCurrentWaitObject)
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206 synchronized (obj)
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207 {
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208 obj.notifyAll ();
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209 }
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210 }
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211
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212 public static Object do_test (String name, Object arg0) throws Exception
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213 {
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214 Object[] argin = new Object[] { arg0 };
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215 Object[] argout = new Object[1];
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216 if (call (name, argin, argout))
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217 return argout[0];
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218 throw new Exception ("octave call failed");
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219 }
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220 }