annotate TaskManager/Cell/CellTaskManagerImpl.cc @ 479:5bda98b0b56d

Double Linked List base TaskQueue
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 05 Oct 2009 10:36:37 +0900
parents 926d6aff886c
children 4896dffad67c
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1 #define DEBUG
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2 #include "error.h"
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3 #include <stdio.h>
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4 #include <stdlib.h>
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5 #include <string.h>
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6 #include "CellTaskManagerImpl.h"
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7 #include "CellTaskListInfo.h"
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8 #include "CellHTaskInfo.h"
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9 #include "PpeScheduler.h"
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10 #include "types.h"
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11
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12 CellTaskManagerImpl::~CellTaskManagerImpl(void)
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13 {
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14 delete speThreads;
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15 delete [] speTaskList;
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16 delete [] speTaskList_bg;
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17 /**
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18 * bufferManager は
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19 * ppeManager のなかで delete してもらう
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20 */
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21 // delete bufferManager;
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22 delete [] flag_sendTaskList;
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23
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24 delete ppeManager;
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25 }
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26
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27 void
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28 CellTaskManagerImpl::init(void)
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29 {
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30 taskQueueImpl = new TaskQueueInfo;
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31 taskQueueImpl->init(TASK_MAX_SIZE*4);
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32
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33 taskListImpl = new CellTaskListInfo;
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34 taskListImpl->init(machineNum*2);
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35
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36 htaskImpl = new CellHTaskInfo;
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37 htaskImpl->init(TASK_MAX_SIZE*2);
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39 speThreads = new SpeThreads(machineNum);
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40 speThreads->init();
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41
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42 speTaskList = new TaskListPtr[machineNum];
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43 speTaskList_bg = new TaskListPtr[machineNum];
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44
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45 for (int i = 0; i < machineNum; i++) {
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46 speTaskList[i] = taskListImpl->create();
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47 speTaskList_bg[i] = taskListImpl->create();
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48 }
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49
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50 flag_sendTaskList = new int[machineNum];
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51 for (int i = 0; i < machineNum; i++) {
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52 flag_sendTaskList[i] = 1;
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53 }
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54 // PPE 側の管理をする Manager
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55 ppeManager = new FifoTaskManagerImpl(machineNum);
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56 // 大半のTaskQueueInfoは、共有される
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57 ppeManager->init(new PpeScheduler, this);
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58 }
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59
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60 void
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61 CellTaskManagerImpl::append_activeTask(HTaskPtr task)
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62 {
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63 TaskQueuePtr q;
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64
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65 q = taskQueueImpl->create(task);
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66 if (task->cpu_type == CPU_PPE) {
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67 ppeManager->append_activeTask(task);
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68 } else {
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69 activeTaskQueue = TaskQueue::append(activeTaskQueue, q);
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70 }
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71 }
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72
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73 // SPE_ANY が指定されていた時に
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74 // これをインクリメントしつつ呼ぶことにする。
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75 // 乱数使ってもいいけどさ。
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76 int cur_anySpeid = 0;
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77
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78 /**
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79 * ActiveTaskQueue から Task を
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80 * 各 SPE に渡す TaskList に入れる
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81 *
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82 * ここの activeTaskQueue は FifoTaskManagerImpl のと意味が違い、
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83 * spe に渡される Task だけ入っている
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84 */
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85 void
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86 CellTaskManagerImpl::set_runTaskList(void)
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87 {
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88 // ここ...直すかな
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89 TaskListPtr list;
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90 TaskQueuePtr queue;
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91 TaskQueuePtr d;
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92 HTaskPtr htask;
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93 TaskPtr task;
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94 int speid;
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95
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96 queue = activeTaskQueue;
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97 if (queue == NULL) {
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98 return ;
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99 }
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100
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101 while (queue) {
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102 htask = (HTaskPtr)queue->task;
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103 d = queue;
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104 queue = queue->next;
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105
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106 if (htask->cpu_type == SPE_ANY) {
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107 speid = cur_anySpeid++;
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108 cur_anySpeid = (cur_anySpeid < machineNum)
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109 ? cur_anySpeid : 0;
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110 } else {
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111 // -1 してるのは
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112 // htask->cpu_type - CPU_SPE で
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113 // SPE0 = 1, SPE1 = 2, ... SPE5 = 6 ってなってるので
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114 // 配列的 (SPE0 = arr[0], SPE1 = arr[1]) にするため
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115 speid = htask->cpu_type - CPU_SPE - 1;
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116
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117 // SPU の数以上が指定されていれば
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118 // とりあえず MAX_USE_SPE_NUM (実際に動く SPE の最大数) で
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119 // あまり求めてそれを使うことにする。
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120 // ここで判定するもんでもないか?
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121 if (speid >= machineNum) {
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122 speid %= machineNum;
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123 }
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124 }
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125
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126 list = speTaskList_bg[speid];
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127
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128 if (list->length >= TASK_MAX_SIZE) {
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129 TaskListPtr newList = taskListImpl->create();
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130 newList = TaskListInfo::append(newList, speTaskList_bg[speid]);
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131 speTaskList_bg[speid] = newList;
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132 list = newList;
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133 }
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134
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135 task = &list->tasks[list->length++];
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136 #if 0
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137 task->command = htask->command;
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138 task->inData = htask->inData;
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139 task->outData = htask->outData;
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140 task->self = (unsigned int)htask;
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141 #else
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142 memcpy(task, htask, sizeof(Task));
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143 #endif
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144
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145 taskQueueImpl->free(d);
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146 }
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147
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148 activeTaskQueue = NULL;
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149 }
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150
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151 void
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152 CellTaskManagerImpl::run(void)
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153 {
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154 TaskListPtr ppeTaskList = NULL;
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155 MailQueuePtr ppeMail = NULL;
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156
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157 // PPE 側で動く TaskList です
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158 // FifoTaskManagerImpl::run と上手く合うように
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159 // こんなことやってますよ
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160 ppeTaskList = ppeManager->get_runTaskList();
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161 if (!ppeTaskList) {
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162 goto cont;
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163 }
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164
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165 // SPE からの Mailbox Check は
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166 // PPE 側の schedule から抜けて来たときに行う
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167 // (speThreads で Blocking Mailbox read と
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168 // 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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169 do {
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170 ppeMail = ppeManager->schedule(ppeTaskList);
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171 cont:
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172 ppeTaskList = mail_check(ppeMail);
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173 } while (ppeTaskList);
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174 }
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175
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176 /**
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177 * SPE からのメールをチェックする
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178 *
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179 * @param [mail_list]
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180 * PPE 側で動く Scheduler からのメールリスト
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181 * この中で PPE 側の mail check も行う
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182 *
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183 * @return PPE Scheduler に対してのメール。
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184 * 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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185 */TaskListPtr
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186 CellTaskManagerImpl::mail_check(MailQueuePtr mail_list)
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187 {
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188 // PPE Scheduler からの mail check
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189 ppeManager->mail_check(mail_list);
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190
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191 do {
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192 unsigned int data;
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193
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194 // SPE Scheduler からの mail check
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195 for (int id = 0; id < machineNum; id++) {
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196 while (speThreads->check_mail(id, 1, &data)) {
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197
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198 /**
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199 * MY_SPE_STATUS_READY: SPE が持ってた Task 全て終了
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200 * MY_SPE_NOP: 特に意味のないコマンド
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201 * 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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202 *
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203 * MY_SPE_NOP が 0 なので、
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204 * 下のように data > MY_SPE_NOP とかしています。
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205 * 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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206 */
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207 // 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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208 if (data == MY_SPE_STATUS_READY) {
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209 //__debug_ppe("[SPE %d] finish\n", id);
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210 flag_sendTaskList[id] = 1;
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211 } else if (data == MY_SPE_COMMAND_MALLOC) {
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212 //__debug_ppe("[PPE] MALLOC COMMAND from [SPE %d]\n", id);
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213
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214 /**
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215 * info[0] = alloc_id; (CellScheduler::mainMem_alloc 参照)
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216 * info[1] = alloc_addr;
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217 */
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218 unsigned int alloc_info[3];
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219 int alloc_size;
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220 int command;
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221
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222 speThreads->get_mail(id, 2, alloc_info);
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223 command = alloc_info[0];
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224 alloc_size = alloc_info[1];
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225
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226
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227 alloc_info[1] = (unsigned int)allocate(alloc_size);
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228 /*
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229 * 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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230 * ここでは TaskList を allocate(new) して登録してやろうか
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231 */
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232
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233 //__debug_ppe("[PPE] MALLOCED 0x%x from [SPE %d]\n", alloc_info[1],id);
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234 speThreads->add_output_tasklist(command, alloc_info[1], alloc_size);
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235
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236 speThreads->send_mail(id, 2, alloc_info);
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237 } else if (data > MY_SPE_NOP) {
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238 //__debug_ppe("[PPE] recv from [SPE %d] : 0x%x\n", id, data);
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239 check_task_finish((HTaskPtr)data);
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240 }
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241 }
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242 }
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243
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244 // 依存関係を満たしたタスクをアクティブに
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245 wakeup_waitTask();
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246
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247 // SPE に送る TaskList の準備
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248 set_runTaskList();
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249
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250 // TaskList 待ちの SPE に TaskList を送る
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251 for (int i = 0; i < machineNum; i++) {
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252 if (flag_sendTaskList[i] == 1 && speTaskList_bg[i]->length >= 1 ) {
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253 send_taskList(i);
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254 }
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255 }
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256
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257 // 現在の FifoTaskManager の仕様では
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258 // ・PPE で実行するタスクが無くなれば終了する
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259 // 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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260 // 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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261 // ここでストップかけてます。
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262 } while (!ppeManager->activeTaskQueue && waitTaskQueue);
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263
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264 return ppeManager->get_runTaskList();
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265 }
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266
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267 /**
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268 * 条件を満たしたら SPE に TaskList を送信する
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269 * 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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270 * 条件2. SPE に送る TaskList に Task がある
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271 *
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272 * SPE で実行終了した TaskList [speTaskList] と
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273 * 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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274 * ついでに実行終了したやつは clear しておく。
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275 */
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276 void
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277 CellTaskManagerImpl::send_taskList(int id)
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278 {
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279 TaskListPtr tmp;
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280
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281 tmp = speTaskList[id];
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282 speTaskList[id] = speTaskList_bg[id];
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283 speTaskList_bg[id] = tmp;
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284
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285 taskListImpl->clear_taskList(speTaskList_bg[id]);
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286
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287 speThreads->send_mail(id, 1, (unsigned int *)&speTaskList[id]);
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288 flag_sendTaskList[id] = 0;
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289 }
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290
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291
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292 void*
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293 CellTaskManagerImpl::allocate(int size)
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294 {
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295 void *buff;
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296
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297 posix_memalign(&buff, DEFAULT_ALIGNMENT, size);
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298
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299 // bzero はコストが高いのでやりたくない
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300 bzero(buff, size);
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301
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302 return buff;
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303 }
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304
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305 Scheduler*
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306 CellTaskManagerImpl::get_scheduler()
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307 {
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308 return ppeManager->get_scheduler();
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309 }
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310
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311 #ifdef __CERIUM_CELL__
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312 TaskManagerImpl*
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313 create_impl(int num)
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314 {
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315 return new CellTaskManagerImpl(num);
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316 }
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317 #endif // __CERIUM_CELL