annotate TaskManager/Cell/CellTaskManagerImpl.cc @ 244:59c3b9df3c67

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author e065746@localhost.localdomain
date Sun, 31 May 2009 20:08:42 +0900
parents 5c194c71eca8
children 0b028a881f3b 1d8b8a4ac453
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1 #include <stdio.h>
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2 #include <stdlib.h>
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3 #include <string.h>
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4 #include "CellTaskManagerImpl.h"
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5 #include "CellBufferManager.h"
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6 #include "PpeScheduler.h"
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7 #include "types.h"
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8 #include "error.h"
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9
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10 CellTaskManagerImpl::~CellTaskManagerImpl(void)
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11 {
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12 delete speThreads;
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13 delete [] speTaskList;
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14 delete [] speTaskList_bg;
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15 /**
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16 * bufferManager は
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17 * ppeManager のなかで delete してもらう
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18 */
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19 // delete bufferManager;
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20 delete [] flag_sendTaskList;
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21
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22 delete ppeManager;
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23 }
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24
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25 void
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26 CellTaskManagerImpl::init(void)
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27 {
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28 bufferManager = new CellBufferManager(machineNum);
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29 bufferManager->init();
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31 speThreads = new SpeThreads(machineNum);
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32 speThreads->init();
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33
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34 speTaskList = new TaskListPtr[machineNum];
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35 speTaskList_bg = new TaskListPtr[machineNum];
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36 for (int i = 0; i < machineNum; i++) {
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37 speTaskList[i] = bufferManager->create_taskList();
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38 speTaskList_bg[i] = bufferManager->create_taskList();
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39 }
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40
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41 flag_sendTaskList = new int[machineNum];
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42 for (int i = 0; i < machineNum; i++) {
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43 flag_sendTaskList[i] = 1;
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44 }
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45
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46 // PPE 側の管理をする Manager
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47 ppeManager = new FifoTaskManagerImpl(machineNum);
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48 ppeManager->init(new PpeScheduler, bufferManager);
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49 }
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50
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51 void
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52 CellTaskManagerImpl::append_activeTask(HTaskPtr task)
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53 {
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54 TaskQueuePtr q;
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55
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56 q = bufferManager->create_taskQueue(task);
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57 if (task->cpu_type == CPU_PPE) {
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58 ppeManager->append_activeTask(task);
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59 } else {
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60 activeTaskQueue = TaskQueue::append(activeTaskQueue, q);
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61 }
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62 }
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63
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64 // SPE_ANY が指定されていた時に
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65 // これをインクリメントしつつ呼ぶことにする。
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66 // 乱数使ってもいいけどさ。
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67 int cur_anySpeid = 0;
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68
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69 /**
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70 * ActiveTaskQueue から Task を
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71 * 各 SPE に渡す TaskList に入れる
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72 *
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73 * ここの activeTaskQueue は FifoTaskManagerImpl のと意味が違い、
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74 * spe に渡される Task だけ入っている
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75 */
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76 void
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77 CellTaskManagerImpl::set_runTaskList(void)
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78 {
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79 // ここ...直すかな
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80 TaskListPtr list;
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81 TaskQueuePtr queue;
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82 TaskQueuePtr d;
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83 HTaskPtr htask;
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84 TaskPtr task;
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85 int speid;
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86
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87 queue = activeTaskQueue;
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88 if (queue == NULL) {
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89 return ;
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90 }
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91
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92 while (queue) {
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93 htask = (HTaskPtr)queue->task;
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94 d = queue;
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95 queue = queue->next;
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96
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97 if (htask->cpu_type == SPE_ANY) {
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98 speid = cur_anySpeid++;
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99 cur_anySpeid = (cur_anySpeid < machineNum)
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100 ? cur_anySpeid : 0;
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101 } else {
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102 // -1 してるのは
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103 // htask->cpu_type - CPU_SPE で
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104 // SPE0 = 1, SPE1 = 2, ... SPE5 = 6 ってなってるので
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105 // 配列的 (SPE0 = arr[0], SPE1 = arr[1]) にするため
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106 speid = htask->cpu_type - CPU_SPE - 1;
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107
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108 // SPU の数以上が指定されていれば
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109 // とりあえず MAX_USE_SPE_NUM (実際に動く SPE の最大数) で
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110 // あまり求めてそれを使うことにする。
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111 // ここで判定するもんでもないか?
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112 if (speid >= machineNum) {
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113 speid %= machineNum;
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114 }
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115 }
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116
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117 list = speTaskList_bg[speid];
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118
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119 if (list->length >= TASK_MAX_SIZE) {
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120 TaskListPtr newList = bufferManager->create_taskList();
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121 newList = TaskListInfo::append(newList, speTaskList_bg[speid]);
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122 speTaskList_bg[speid] = newList;
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123 list = newList;
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124 }
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125
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126 task = &list->tasks[list->length++];
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127 #if 0
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128 task->command = htask->command;
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129 task->inData = htask->inData;
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130 task->outData = htask->outData;
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131 task->self = (unsigned int)htask;
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132 #else
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133 memcpy(task, htask, sizeof(Task));
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134 #endif
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135
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136 bufferManager->free_taskQueue(d);
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137 }
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138
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139 activeTaskQueue = NULL;
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140 }
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141
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142 void
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143 CellTaskManagerImpl::run(void)
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144 {
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145 TaskListPtr ppeTaskList = NULL;
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146 MailQueuePtr ppeMail = NULL;
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147
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148 // PPE 側で動く TaskList です
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149 // FifoTaskManagerImpl::run と上手く合うように
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150 // こんなことやってますよ
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151 ppeTaskList = ppeManager->get_runTaskList();
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152 if (!ppeTaskList) {
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153 goto cont;
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154 }
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155
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156 // SPE からの Mailbox Check は
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157 // PPE 側の schedule から抜けて来たときに行う
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158 // (speThreads で Blocking Mailbox read と
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159 // セマフォとか使ってやってもいいが、今はこの方式で)
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160 do {
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161 ppeMail = ppeManager->schedule(ppeTaskList);
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162 cont:
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163 ppeTaskList = mail_check(ppeMail);
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164 } while (ppeTaskList);
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165 }
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166
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167 /**
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168 * SPE からのメールをチェックする
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169 *
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170 * @param [mail_list]
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171 * PPE 側で動く Scheduler からのメールリスト
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172 * この中で PPE 側の mail check も行う
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173 *
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174 * @return PPE Scheduler に対してのメール。
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175 * 次に実行する TaskList のアドレスや、終了コマンドを送る
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176 */TaskListPtr
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177 CellTaskManagerImpl::mail_check(MailQueuePtr mail_list)
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178 {
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179 // PPE Scheduler からの mail check
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180 ppeManager->mail_check(mail_list, &waitTaskQueue);
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181
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182 do {
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183 unsigned int data;
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184
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185 // SPE Scheduler からの mail check
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186 for (int id = 0; id < machineNum; id++) {
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187 while (speThreads->check_mail(id, 1, &data)) {
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188
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189 /**
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190 * MY_SPE_STATUS_READY: SPE が持ってた Task 全て終了
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191 * MY_SPE_NOP: 特に意味のないコマンド
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192 * それ以外:終了したタスク(PPEにあるのでアドレス
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193 *
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194 * MY_SPE_NOP が 0 なので、
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195 * 下のように data > MY_SPE_NOP とかしています。
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196 * 一目でよくわからない書き方なんで、直したいところですが。。。
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197 */
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198 // 名前あとでちゃんと決めよう => MY_SPE_... とかじゃなくて
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199 if (data == MY_SPE_STATUS_READY) {
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200 __debug_ppe("[SPE %d] finish\n", id);
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201 flag_sendTaskList[id] = 1;
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202 } else if (data == MY_SPE_COMMAND_MALLOC) {
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203 __debug_ppe("[PPE] MALLOC COMMAND from [SPE %d]\n", id);
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204
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205 /**
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206 * info[0] = alloc_id; (CellScheduler::mainMem_alloc 参照)
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207 * info[1] = alloc_addr;
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208 */
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209 unsigned int alloc_info[3];
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210 int alloc_size;
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211 int command;
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212
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213 speThreads->get_mail(id, 2, alloc_info);
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214 command = alloc_info[0];
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215 allock_size = alloc_info[1];
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216
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217
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218 alloc_info[1] = (unsigned int)allocate(alloc_size);
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219 /*
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220 * allocate された領域は今の SPE buffer にリンクとして接続する
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221 * ここでは TaskList を allocate(new) して登録してやろうか
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222 */
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223
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224 speThreads->add_output_tasklist(command, alloc_info[1], alloc_size);
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225
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226 speThreads->send_mail(id, 2, alloc_info);
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227 } else if (data > MY_SPE_NOP) {
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228 __debug_ppe("[PPE] recv from [SPE %d] : 0x%x\n", id, data);
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229 check_task_finish((HTaskPtr)data);
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230 }
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231 }
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232 }
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233
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234 // 依存関係を満たしたタスクをアクティブに
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235 wakeup_waitTask();
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236
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237 // SPE に送る TaskList の準備
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238 set_runTaskList();
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239
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240 // TaskList 待ちの SPE に TaskList を送る
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241 for (int i = 0; i < machineNum; i++) {
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242 if (flag_sendTaskList[i] == 1 && speTaskList_bg[i]->length >= 1 ) {
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243 send_taskList(i);
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244 }
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245 }
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246
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247 // 現在の FifoTaskManager の仕様では
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248 // ・PPE で実行するタスクが無くなれば終了する
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249 // であり、この場合もし SPE にタスクが残っていても
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250 // メインループから抜けてプログラム終了となってしまうので
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251 // ここでストップかけてます。
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252 } while (!ppeManager->activeTaskQueue && waitTaskQueue);
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253
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254 return ppeManager->get_runTaskList();
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255 }
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256
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257 /**
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258 * 条件を満たしたら SPE に TaskList を送信する
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259 * 条件1. SPE が持ってた TaskList を終了して、次の TaskList を待ってる
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260 * 条件2. SPE に送る TaskList に Task がある
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261 *
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262 * SPE で実行終了した TaskList [speTaskList] と
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263 * これから実行する TaskList [speTaskList_bg] のバッファを入れ替える
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264 * ついでに実行終了したやつは clear しておく。
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265 */
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266 void
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267 CellTaskManagerImpl::send_taskList(int id)
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268 {
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269 TaskListPtr tmp;
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270
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271 tmp = speTaskList[id];
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272 speTaskList[id] = speTaskList_bg[id];
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273 speTaskList_bg[id] = tmp;
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274
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275 bufferManager->clear_taskList(speTaskList_bg[id]);
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276
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277 speThreads->send_mail(id, 1, (unsigned int *)&speTaskList[id]);
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278 flag_sendTaskList[id] = 0;
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279 }
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280
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281
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282 void*
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283 CellTaskManagerImpl::allocate(int size)
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284 {
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285 void *buff;
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286
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287 posix_memalign(&buff, DEFAULT_ALIGNMENT, size);
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288
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289 // bzero はコストが高いのでやりたくない
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290 bzero(buff, size);
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291
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292 return buff;
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293 }
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294
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295 #ifdef __CERIUM_CELL__
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296 TaskManagerImpl*
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297 create_impl(int num)
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298 {
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299 return new CellTaskManagerImpl(num);
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300 }
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301 #endif // __CERIUM_CELL