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annotate TaskManager/kernel/ppe/TaskManagerImpl.cc @ 619:0decff4e867b

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RenewTask removal
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Sun, 15 Nov 2009 02:02:30 +0900
parents 47b61865ea8c
children 0558abba673c
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1 #include <stdio.h>
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2 #include "TaskManagerImpl.h"
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3 #include "types.h"
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4 #include "error.h"
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5 #include "SchedTask.h"
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6 #include "../sys_task/SysTask.h"
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7
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8 #include "Scheduler.h"
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9
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10 static HTaskPtr systask_start;
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11 static HTaskPtr systask_finish;
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12
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13 static void
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14 noaction(SchedTask *s, void *read, void *write)
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15 {
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16 }
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18 TaskManagerImpl::TaskManagerImpl(int num)
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19 : machineNum(num) {
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20 activeTaskQueue = new HTaskInfo();
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21 waitTaskQueue = new HTaskInfo();
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22 htaskImpl = waitTaskQueue ; // any HTaskInfo
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23 taskQueueImpl = new TaskQueueInfo();
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24 }
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25
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26 /**
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27 * 一番最初に PPE で実行される systask_start
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28 * 一番最後に、全てのタスクの終了を待つ systask_finish
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29 * 番兵的な意味で実装
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30 */
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31 void
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32 TaskManagerImpl::systask_init()
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33 {
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34 systask_register();
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35
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36 systask_start = create_task(SYSTASK_START);
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37 systask_finish = create_task(SYSTASK_FINISH);
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39 systask_start->spawn();
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40
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41 // systask_finish で spawn すると
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42 // systask_finish->wait_for(systask_finish);
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43 // とかなって無限ループになるので、
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44 // これだけは明示的に append_waitTask() で
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45 append_waitTask(systask_finish);
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46 }
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47
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48 HTaskPtr
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49 TaskManagerImpl::create_task(int cmd)
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50 {
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51 HTaskPtr new_task;
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52
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53 new_task = htaskImpl->create(cmd);
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54 new_task->post_func = noaction;
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55 new_task->mimpl = this;
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56
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57 return new_task;
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58 }
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59
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60 /**
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61 * task の依存関係を設定
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62 * master task が終わってから、slave task を実行するように
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63 * master->wait_for(slave);
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64 */
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65 void
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66 TaskManagerImpl::set_task_depend(HTaskPtr master, HTaskPtr slave)
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67 {
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68 TaskQueuePtr m, s;
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69
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70 m = taskQueueImpl->create(master);
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71 s = taskQueueImpl->create(slave);
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72
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73 master->wait_me->addLast(s);
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74 slave->wait_i->addLast(m);
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75 s->waiter = m;
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76 }
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78 /**
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79 * タスクを実行可能キューまたは待機キューへ追加する。
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80 * 依存関係が満たされていれば active, まだだったら wait へ。
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81 * task->spawn();
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82 */
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83 void
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84 TaskManagerImpl::spawn_task(HTaskPtr task)
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85 {
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86 // waiter // master
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87 // waitee // slave
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88 if (task->wait_i->empty()) {
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89 append_activeTask(task);
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90 } else {
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91 append_waitTask(task);
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92 }
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94 systask_finish->wait_for(task);
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95 }
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96
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97 /**
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98 * Task を実行可能キューに追加する
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99 */
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100 void
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101 TaskManagerImpl::append_activeTask(HTaskPtr q)
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102 {
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103 activeTaskQueue->addLast(q);
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104 }
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105
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106 /**
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107 * タスクが実行する CPU を選択する
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108 *
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109 * 現在は CPU_PPE, CPU_SPE, SPE_ANY, SPE_0, SPE_1, ..., SPE_5
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110 * types.h に書いてます。
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111 */
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112 void
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113 TaskManagerImpl::set_task_cpu(HTaskPtr task, CPU_TYPE type)
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114 {
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115 task->cpu_type = type;
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116 }
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117
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118 /**
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119 * 終了したタスクから依存の処理とか
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120 * post_func() はこのタスクが終了したら実行する関数。
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121 *
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122 * @param [task] 終了したタスク
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123 */
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124 void
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125 TaskManagerImpl::check_task_finish(HTaskPtr me)
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126 {
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127
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128 while(TaskQueue *p = me->wait_me->poll()) {
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129 HTaskPtr you = p->task;
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130 TaskQueueInfo *wait_i = you->wait_i;
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131 // 相手の wait queue から自分(を指しているTaskQueue)を削除
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132 wait_i->remove(p->waiter);
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133 // queue を free する
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134 wait_i->free_(p->waiter);
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135
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136 if (wait_i->empty()) {
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137 waitTaskQueue->remove(you);
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138 append_activeTask(you);
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139 }
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140
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141 wait_i->free_(p);
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142 }
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143
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144 htaskImpl->free_(me);
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145 }
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146
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147
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148 void
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149 TaskManagerImpl::append_waitTask(HTaskPtr q)
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150 {
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151 waitTaskQueue ->addLast(q);
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152 }
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153
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154 /**
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155 * waitQueue の中で依存関係を満たしたタスクは
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156 * activeQueue へ移す
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157 */
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158 void
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159 TaskManagerImpl::wakeup_waitTask()
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160 {
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161 // done in check_task_finish
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162 }
54
90523ccc4dff *** empty log message ***
gongo
parents: 50
diff changeset
163
619
0decff4e867b RenewTask removal
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 567
diff changeset
164
479
5bda98b0b56d Double Linked List base TaskQueue
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents: 475
diff changeset
165 /* end */