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annotate org.eclipse.core.jobs/src/org/eclipse/core/internal/jobs/JobListeners.d @ 87:8594250b1d1c

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make it all again compile
author Frank Benoit <benoit@tionex.de>
date Sat, 18 Apr 2009 14:20:15 +0200
parents bc29606a740c
children
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1 /*******************************************************************************
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2 * Copyright (c) 2003, 2006 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM - Initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module org.eclipse.core.internal.jobs.JobListeners;
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14
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15 import java.lang.all;
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16
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17 import org.eclipse.core.internal.runtime.RuntimeLog;
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18 import org.eclipse.core.runtime.IStatus;
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19 import org.eclipse.core.runtime.ListenerList;
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20 import org.eclipse.core.runtime.OperationCanceledException;
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21 import org.eclipse.core.runtime.Status;
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22 import org.eclipse.core.runtime.jobs.IJobChangeEvent;
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23 import org.eclipse.core.runtime.jobs.IJobChangeListener;
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24 import org.eclipse.core.runtime.jobs.Job;
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25 import org.eclipse.osgi.util.NLS;
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26 import org.eclipse.core.internal.jobs.JobChangeEvent;
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27 import org.eclipse.core.internal.jobs.InternalJob;
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28 import org.eclipse.core.internal.jobs.JobOSGiUtils;
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29 import org.eclipse.core.internal.jobs.JobManager;
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30 import org.eclipse.core.internal.jobs.JobMessages;
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31
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32 /**
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33 * Responsible for notifying all job listeners about job lifecycle events. Uses a
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34 * specialized iterator to ensure the complex iteration logic is contained in one place.
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35 */
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36 class JobListeners {
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37 interface IListenerDoit {
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38 public void notify(IJobChangeListener listener, IJobChangeEvent event);
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39 }
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40
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41 private const IListenerDoit aboutToRun_;
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42 private const IListenerDoit awake_;
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43 private const IListenerDoit done_;
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44 private const IListenerDoit running_;
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45 private const IListenerDoit scheduled_;
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46 private const IListenerDoit sleeping_;
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47 /**
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48 * The global job listeners.
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49 */
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50 protected const ListenerList global;
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51
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52 this(){
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53 aboutToRun_ = new class IListenerDoit {
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54 public void notify(IJobChangeListener listener, IJobChangeEvent event) {
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55 listener.aboutToRun(event);
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56 }
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57 };
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58 awake_ = new class IListenerDoit {
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59 public void notify(IJobChangeListener listener, IJobChangeEvent event) {
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60 listener.awake(event);
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61 }
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62 };
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63 done_ = new class IListenerDoit {
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64 public void notify(IJobChangeListener listener, IJobChangeEvent event) {
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65 listener.done(event);
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66 }
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67 };
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68 running_ = new class IListenerDoit {
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69 public void notify(IJobChangeListener listener, IJobChangeEvent event) {
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70 listener.running(event);
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71 }
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72 };
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73 scheduled_ = new class IListenerDoit {
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74 public void notify(IJobChangeListener listener, IJobChangeEvent event) {
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75 listener.scheduled(event);
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76 }
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77 };
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78 sleeping_ = new class IListenerDoit {
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79 public void notify(IJobChangeListener listener, IJobChangeEvent event) {
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80 listener.sleeping(event);
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81 }
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82 };
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83 global = new ListenerList(ListenerList.IDENTITY);
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84 }
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85
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86 /**
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87 * TODO Could use an instance pool to re-use old event objects
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88 */
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89 static JobChangeEvent newEvent(Job job) {
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90 JobChangeEvent instance = new JobChangeEvent();
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91 instance.job = job;
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92 return instance;
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93 }
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94
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95 static JobChangeEvent newEvent(Job job, IStatus result) {
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96 JobChangeEvent instance = new JobChangeEvent();
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97 instance.job = job;
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98 instance.result = result;
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99 return instance;
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100 }
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101
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102 static JobChangeEvent newEvent(Job job, long delay) {
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103 JobChangeEvent instance = new JobChangeEvent();
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104 instance.job = job;
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105 instance.delay = delay;
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106 return instance;
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107 }
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108
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109 /**
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110 * Process the given doit for all global listeners and all local listeners
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111 * on the given job.
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112 */
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113 private void doNotify(IListenerDoit doit, IJobChangeEvent event) {
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114 //notify all global listeners
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115 Object[] listeners = global.getListeners();
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116 int size = listeners.length;
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117 for (int i = 0; i < size; i++) {
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118 try {
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119 if (listeners[i] !is null)
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120 doit.notify(cast(IJobChangeListener) listeners[i], event);
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121 } catch (Exception e) {
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122 handleException(listeners[i], e);
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123 // } catch (LinkageError e) {
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124 // handleException(listeners[i], e);
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125 }
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126 }
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127 //notify all local listeners
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128 ListenerList list = (cast(InternalJob) event.getJob()).getListeners();
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129 listeners = list is null ? null : list.getListeners();
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130 if (listeners is null)
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131 return;
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132 size = listeners.length;
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133 for (int i = 0; i < size; i++) {
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134 try {
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135 if (listeners[i] !is null)
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136 doit.notify(cast(IJobChangeListener) listeners[i], event);
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137 } catch (Exception e) {
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138 handleException(listeners[i], e);
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139 // } catch (LinkageError e) {
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140 // handleException(listeners[i], e);
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141 }
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142 }
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143 }
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144
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145 private void handleException(Object listener, Exception e) {
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146 //this code is roughly copied from InternalPlatform.run(ISafeRunnable),
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147 //but in-lined here for performance reasons
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148 if (cast(OperationCanceledException)e )
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149 return;
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150 String pluginId = JobOSGiUtils.getDefault().getBundleId(listener);
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151 if (pluginId is null)
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152 pluginId = JobManager.PI_JOBS;
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153 String message = NLS.bind(JobMessages.meta_pluginProblems, pluginId);
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154 RuntimeLog.log(new Status(IStatus.ERROR, pluginId, JobManager.PLUGIN_ERROR, message, e));
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155 }
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156
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157 public void add(IJobChangeListener listener) {
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158 global.add(cast(Object)listener);
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159 }
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160
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161 public void remove(IJobChangeListener listener) {
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162 global.remove(cast(Object)listener);
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163 }
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164
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165 public void aboutToRun(Job job) {
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166 doNotify(aboutToRun_, newEvent(job));
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167 }
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168
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169 public void awake(Job job) {
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170 doNotify(awake_, newEvent(job));
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171 }
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172
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173 public void done(Job job, IStatus result, bool reschedule) {
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174 JobChangeEvent event = newEvent(job, result);
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175 event.reschedule = reschedule;
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176 doNotify(done_, event);
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177 }
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178
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179 public void running(Job job) {
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180 doNotify(running_, newEvent(job));
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181 }
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182
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183 public void scheduled(Job job, long delay, bool reschedule) {
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184 JobChangeEvent event = newEvent(job, delay);
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185 event.reschedule = reschedule;
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186 doNotify(scheduled_, event);
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187 }
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188
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189 public void sleeping(Job job) {
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190 doNotify(sleeping_, newEvent(job));
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191 }
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192 }