Mercurial > hg > Members > kono > Cerium
annotate TaskManager/kernel/ppe/TaskManagerImpl.cc @ 518:125a72948e44
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author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Fri, 16 Oct 2009 17:57:17 +0900 |
parents | 735f76483bb2 |
children | 5c76db2a07fa |
rev | line source |
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5 | 1 #include <stdio.h> |
3 | 2 #include "TaskManagerImpl.h" |
518 | 3 #include "SchedTask.h" |
4 #include "SchedTaskManager.h" | |
46 | 5 #include "types.h" |
6 #include "error.h" | |
109 | 7 #include "../sys_task/SysTask.h" |
8 | |
220 | 9 static HTaskPtr systask_start; |
109 | 10 static HTaskPtr systask_finish; |
42 | 11 |
109 | 12 TaskManagerImpl::TaskManagerImpl(int num) |
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13 : machineNum(num) { |
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14 activeTaskQueue = new HTaskInfo(); |
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15 waitTaskQueue = new HTaskInfo(); |
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16 htaskImpl = waitTaskQueue ; // any HTaskInfo |
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17 taskQueueImpl = new TaskQueueInfo(); |
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18 } |
50 | 19 |
518 | 20 static void |
21 noaction(SchedTask *s, void *read, void *write) | |
22 { | |
23 } | |
24 | |
220 | 25 /** |
298 | 26 * 一番最初に PPE で実行される systask_start |
27 * 一番最後に、全てのタスクの終了を待つ systask_finish | |
28 * 番兵的な意味で実装 | |
220 | 29 */ |
42 | 30 void |
499 | 31 TaskManagerImpl::systask_init() |
42 | 32 { |
109 | 33 systask_register(); |
42 | 34 |
507 | 35 schedTaskManager = new SchedTaskManager(this); |
36 | |
220 | 37 systask_start = create_task(SYSTASK_START); |
109 | 38 systask_finish = create_task(SYSTASK_FINISH); |
220 | 39 |
40 systask_start->spawn(); | |
41 | |
298 | 42 // systask_finish で spawn すると |
220 | 43 // systask_finish->wait_for(systask_finish); |
298 | 44 // とかなって無限ループになるので、 |
45 // これだけは明示的に append_waitTask() で | |
499 | 46 append_waitTask(systask_finish); |
42 | 47 } |
48 | |
3 | 49 HTaskPtr |
109 | 50 TaskManagerImpl::create_task(int cmd) |
3 | 51 { |
52 HTaskPtr new_task; | |
53 | |
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54 new_task = htaskImpl->create(cmd); |
109 | 55 new_task->post_func = noaction; |
63 | 56 new_task->mimpl = this; |
57 | |
3 | 58 return new_task; |
59 } | |
60 | |
61 /** | |
298 | 62 * タスクを実行可能キューまたは待機キューへ追加する。 |
63 * 依存関係が満たされていれば active, まだだったら wait へ。 | |
109 | 64 * task->spawn(); |
65 */ | |
3 | 66 void |
18 | 67 TaskManagerImpl::spawn_task(HTaskPtr task) |
3 | 68 { |
109 | 69 // waiter // master |
70 // waitee // slave | |
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71 if (task->wait_i->empty()) { |
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72 append_activeTask(task); |
3 | 73 } else { |
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74 append_waitTask(task); |
3 | 75 } |
109 | 76 |
77 systask_finish->wait_for(task); | |
3 | 78 } |
42 | 79 |
109 | 80 /** |
298 | 81 * Task を実行可能キューに追加する |
109 | 82 */ |
83 void | |
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84 TaskManagerImpl::append_activeTask(HTaskPtr q) |
109 | 85 { |
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86 activeTaskQueue->addLast(q); |
109 | 87 } |
88 | |
89 /** | |
298 | 90 * 終了したタスクから依存の処理とか |
91 * post_func() はこのタスクが終了したら実行する関数。 | |
109 | 92 * |
298 | 93 * @param [task] 終了したタスク |
109 | 94 */ |
95 void | |
497 | 96 TaskManagerImpl::check_task_finish(HTaskPtr me) |
42 | 97 { |
499 | 98 // post_func を先に実行しないと、systask_finish が active_queue |
99 // 移されてから、wait_for されるという事態が起きることがある。 | |
100 | |
507 | 101 me->post_func(schedTaskManager, me->post_arg1,me->post_arg2); |
499 | 102 |
497 | 103 while(TaskQueue *p = me->wait_me->poll()) { |
499 | 104 HTaskPtr you = p->task; |
497 | 105 TaskQueueInfo *wait_i = you->wait_i; |
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106 // 相手の wait queue から自分(を指しているTaskQueue)を削除 |
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107 wait_i->remove(p->waiter); |
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108 // queue を free する |
493 | 109 wait_i->free_(p->waiter); |
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110 |
497 | 111 if (wait_i->empty()) { |
499 | 112 waitTaskQueue->remove(you); |
113 append_activeTask(you); | |
497 | 114 } |
115 | |
493 | 116 wait_i->free_(p); |
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117 } |
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118 |
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119 htaskImpl->free_(me); |
109 | 120 } |
42 | 121 |
109 | 122 |
123 void | |
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124 TaskManagerImpl::append_waitTask(HTaskPtr q) |
109 | 125 { |
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parents:
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126 waitTaskQueue ->addLast(q); |
109 | 127 } |
128 | |
129 /** | |
298 | 130 * waitQueue の中で依存関係を満たしたタスクは |
131 * activeQueue へ移す | |
109 | 132 */ |
133 void | |
499 | 134 TaskManagerImpl::wakeup_waitTask() |
109 | 135 { |
497 | 136 // done in check_task_finish |
109 | 137 } |
54 | 138 |
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139 /* end */ |