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annotate deps/Platinum/Source/Core/PltThreadTask.cpp @ 0:3425707ddbf6

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author fraserofthenight
date Mon, 06 Jul 2009 08:06:28 -0700
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1 /*****************************************************************
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2 |
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3 | Platinum - Tasks
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4 |
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5 | Copyright (c) 2004-2008, Plutinosoft, LLC.
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6 | All rights reserved.
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7 | http://www.plutinosoft.com
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8 |
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9 | This program is free software; you can redistribute it and/or
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10 | modify it under the terms of the GNU General Public License
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11 | as published by the Free Software Foundation; either version 2
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12 | of the License, or (at your option) any later version.
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13 |
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14 | OEMs, ISVs, VARs and other distributors that combine and
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15 | distribute commercially licensed software with Platinum software
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16 | and do not wish to distribute the source code for the commercially
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17 | licensed software under version 2, or (at your option) any later
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18 | version, of the GNU General Public License (the "GPL") must enter
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19 | into a commercial license agreement with Plutinosoft, LLC.
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20 |
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21 | This program is distributed in the hope that it will be useful,
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22 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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23 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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24 | GNU General Public License for more details.
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25 |
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26 | You should have received a copy of the GNU General Public License
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27 | along with this program; see the file LICENSE.txt. If not, write to
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28 | the Free Software Foundation, Inc.,
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29 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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30 | http://www.gnu.org/licenses/gpl-2.0.html
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31 |
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32 ****************************************************************/
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33
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34 /*----------------------------------------------------------------------
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35 | includes
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36 +---------------------------------------------------------------------*/
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37 #include "PltThreadTask.h"
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38 #include "PltTaskManager.h"
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39
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40 NPT_SET_LOCAL_LOGGER("platinum.core.threadtask")
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41
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42 /*----------------------------------------------------------------------
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43 | PLT_ThreadTask::PLT_ThreadTask
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44 +---------------------------------------------------------------------*/
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45 PLT_ThreadTask::PLT_ThreadTask() :
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46 m_TaskManager(NULL),
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47 m_Thread(NULL),
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48 m_AutoDestroy(false)
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49 {
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50 }
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51
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52 /*----------------------------------------------------------------------
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53 | PLT_ThreadTask::~PLT_ThreadTask
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54 +---------------------------------------------------------------------*/
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55 PLT_ThreadTask::~PLT_ThreadTask()
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56 {
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57 if (!m_AutoDestroy) delete m_Thread;
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58 }
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59
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60 /*----------------------------------------------------------------------
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61 | PLT_ThreadTask::Start
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62 +---------------------------------------------------------------------*/
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63 NPT_Result
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64 PLT_ThreadTask::Start(PLT_TaskManager* task_manager /* = NULL */,
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65 NPT_TimeInterval* delay /* = NULL */,
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66 bool auto_destroy /* = true */)
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67 {
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68 m_Abort.SetValue(0);
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69 m_AutoDestroy = auto_destroy;
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70
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71 if (delay) m_Delay = *delay;
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72
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73 if (task_manager) {
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74 m_TaskManager = task_manager;
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75 NPT_CHECK_SEVERE(m_TaskManager->AddTask(this));
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76 }
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77
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78 m_Thread = new NPT_Thread((NPT_Runnable&)*this, m_AutoDestroy);
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79 return m_Thread->Start();
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80 }
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81
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82 /*----------------------------------------------------------------------
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83 | PLT_ThreadTask::Stop
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84 +---------------------------------------------------------------------*/
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85 NPT_Result
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86 PLT_ThreadTask::Stop(bool blocking /* = true */)
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87 {
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88 m_Abort.SetValue(1);
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89
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90 // tell thread we want to die
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91 DoAbort();
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92
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93 // if auto-destroy, the thread may be dead, so we can't wait
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94 // regardless on the m_Thread...only TaskManager knows
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95 if (m_AutoDestroy == true && blocking) return NPT_FAILURE;
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96
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97 // wait for thread to be dead
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98 return (blocking && m_Thread)?m_Thread->Wait():NPT_SUCCESS;
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99 }
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100
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101 /*----------------------------------------------------------------------
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102 | PLT_ThreadTask::Kill
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103 +---------------------------------------------------------------------*/
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104 NPT_Result
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105 PLT_ThreadTask::Kill()
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106 {
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107 // A task can only be destroyed manually
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108 // when the m_AutoDestroy is false
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109 // otherwise the task manager takes
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110 // care of deleting it
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111
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112 NPT_ASSERT(m_AutoDestroy == false);
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113
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114 Stop();
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115
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116 // cleanup
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117 delete this;
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118 return NPT_SUCCESS;
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119 }
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120
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121 /*----------------------------------------------------------------------
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122 | PLT_ThreadTask::Run
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123 +---------------------------------------------------------------------*/
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124 void
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125 PLT_ThreadTask::Run()
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126 {
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127 if (m_Delay) {
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128 NPT_TimeStamp start, now;
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129 NPT_System::GetCurrentTimeStamp(start);
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130 do {
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131 NPT_System::GetCurrentTimeStamp(now);
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132 if (now >= start + m_Delay) break;
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133 } while(!IsAborting(100));
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134 }
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135
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136 if (!IsAborting(0)) {
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137 DoInit();
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138 DoRun();
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139 }
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140
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141 if (m_TaskManager) {
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142 m_TaskManager->RemoveTask(this);
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143 }
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144 }
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145
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146 /*----------------------------------------------------------------------
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147 | PLT_ThreadTaskCallback::Callback
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148 +---------------------------------------------------------------------*/
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149 NPT_Result
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150 PLT_ThreadTaskCallback::Callback()
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151 {
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152 // acquire global lock
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153 NPT_AutoLock lock(m_Lock);
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154
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155 // invoke callback
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156 return DoCallback();
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157 }