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annotate example/many_task/sort.cc @ 938:8733ad41297d

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dead lock still remains. zombi problem?
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Sat, 31 Jul 2010 10:32:19 +0900
parents 14fb1c888931
children 9cfac2e8fc2e
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1 #include "TaskManager.h"
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2 #include "SchedTask.h"
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3 #include "sort.h"
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4 #include "Func.h"
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5 #include <string.h>
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6
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7 static void sort_start(SchedTask *);
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8 extern void check_data();
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9
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10 static DataPtr data;
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11 static int data_length;
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12 static int cpuNum;
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13
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14 extern int all;
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15
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16 /**
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17 * 一つの block にある data の数が MAX_BLOCK_SIZE 超えないような
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18 * len の分割数を返す
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19 *
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20 * @param len sort する data の総数
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21 * @param num 使用する SPE の数
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22 *
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23 * @return data の分割数
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24 *
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25 * TODO:
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26 * len が num 以下とか考えてません
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27 */
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28 static int
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29 get_split_num(int len, int num)
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30 {
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31 if (len / num < MAX_BLOCK_SIZE) {
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32 return num;
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33 } else {
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34 // 切り上げ
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35 return (len + MAX_BLOCK_SIZE - 1) / MAX_BLOCK_SIZE;
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36 }
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37 }
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38
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39
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40 HTaskPtr *fsort;
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41 HTaskPtr *bsort;
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42 int split_num;
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43
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44
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45 /**
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46 * btask が全て終了したら、再び sort_start を実行する
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47 * @param d 生成された btask の数
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48 */
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49
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50 SchedDefineTask1(RESTART, sort_restart );
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51
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52 static int
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53 sort_restart(SchedTask *s, void *d, void *e)
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54 {
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55 static int ccc = 0;
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56
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57 // printf("restarted %d %% %d\n",ccc++,split_num);
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58 sort_start(s);
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59 return 0;
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60 }
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61 #ifdef USE_SIMPLE_TASK
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62
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63 static void
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64 sort_start(SchedTask *manager)
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65 {
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66 int half_num = split_num-1;
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67 static int sort_count = split_num; // sort 完了に必要な回数
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68
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69 // 一つのタスクで sort する data 数
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70 int block_num = (data_length + split_num -1)/split_num;
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71 int half_block_num = block_num/2;
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72
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73 int last_block_num = data_length - (split_num-1)*block_num;
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74 int last_half_block_num = half_block_num+(last_block_num/2);
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75
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76 if (--sort_count < 0) {
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77 return;
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78 }
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79
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80
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81 for (int i = 0; i < split_num-1; i++) {
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82 fsort[i] = manager->create_task(QUICK_SORT,
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83 (memaddr)&data[i*block_num], sizeof(Data)*block_num,
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84 (memaddr)&data[i*block_num], sizeof(Data)*block_num);
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85 if (i>0 && bsort[i-1]) {
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86 fsort[i]->wait_for(bsort[i-1]);
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87 }
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88 if (i<split_num-2 && bsort[i]) {
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89 fsort[i]->wait_for(bsort[i]);
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90 }
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91 fsort[i]->set_cpu(SPE_ANY);
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92 }
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93
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94 // 最後の block は端数なので last_block_num を使う
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95 {
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96 int i = split_num-1;
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97
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98 fsort[i] = manager->create_task(QUICK_SORT,
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99 (memaddr)&data[i*block_num], sizeof(Data)*last_block_num,
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100 (memaddr)&data[i*block_num], sizeof(Data)*last_block_num);
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101 if (i>0 && bsort[i-1]) {
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102 fsort[i]->wait_for(bsort[i-1]);
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103 }
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104 fsort[i]->set_cpu(SPE_ANY);
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105 }
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106
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107 if (split_num > 1) {
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108
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109 for (int i = 0; i < half_num-1; i++) {
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110 bsort[i] = manager->create_task(QUICK_SORT,
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111 (memaddr)&data[i*block_num+half_block_num], sizeof(Data)*block_num,
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112 (memaddr)&data[i*block_num+half_block_num], sizeof(Data)*block_num);
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113 bsort[i]->set_cpu(SPE_ANY);
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114 }
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115
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116 {
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117 int i = half_num-1;
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118
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119 bsort[i] = manager->create_task(QUICK_SORT,
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120 (memaddr)&data[i*block_num+half_block_num], sizeof(Data)*last_half_block_num,
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121 (memaddr)&data[i*block_num+half_block_num], sizeof(Data)*last_half_block_num);
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122 bsort[i]->set_cpu(SPE_ANY);
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123 }
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124
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125 for (int i = 0; i < half_num; i++) {
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126 bsort[i]->wait_for(fsort[i]);
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127 bsort[i]->wait_for(fsort[i+1]);
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128 bsort[i]->spawn();
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129 }
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130 }
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131
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132 HTaskPtr restart = manager->create_task(RESTART,0,0,0,0);
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133 for (int i = 0; i < split_num; i++) {
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134 if (!all) restart->wait_for(fsort[i]);
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135 fsort[i]->spawn();
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136 }
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137 restart->spawn();
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138 }
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139
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140 #else
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141
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142 static void
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143 sort_start(SchedTask *manager)
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144 {
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145 int half_num = split_num-1;
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146 static int sort_count = split_num; // sort 完了に必要な回数
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147
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148 // 一つのタスクで sort する data 数
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149 int block_num = (data_length + split_num -1)/split_num;
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150 int half_block_num = block_num/2;
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151
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152 int last_block_num = data_length - (split_num-1)*block_num;
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153 int last_half_block_num = half_block_num+(last_block_num/2);
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154
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155
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156 if (--sort_count < 0) {
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157 return;
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158 }
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159
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160
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161 for (int i = 0; i < split_num-1; i++) {
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162 fsort[i] = manager->create_task(QUICK_SORT);
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163 fsort[i]->add_inData(&data[i*block_num], sizeof(Data)*block_num);
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164 fsort[i]->add_outData(&data[i*block_num], sizeof(Data)*block_num);
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165 fsort[i]->set_param(0,(memaddr)block_num);
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166 if (i>0 && bsort[i-1]) {
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167 fsort[i]->wait_for(bsort[i-1]);
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168 }
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169 if (i<split_num-2 && bsort[i]) {
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170 fsort[i]->wait_for(bsort[i]);
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171 }
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172 fsort[i]->set_cpu(SPE_ANY);
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173 }
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174
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175 // 最後の block は端数なので last_block_num を使う
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176 {
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177 int i = split_num-1;
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178
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179 fsort[i] = manager->create_task(QUICK_SORT);
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180 fsort[i]->add_inData(&data[i*block_num], sizeof(Data)*last_block_num);
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181 fsort[i]->add_outData(&data[i*block_num], sizeof(Data)*last_block_num);
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182 fsort[i]->set_param(0,(memaddr)last_block_num);
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183 if (i>0 && bsort[i-1]) {
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184 fsort[i]->wait_for(bsort[i-1]);
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185 }
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186 fsort[i]->set_cpu(SPE_ANY);
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187 }
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188
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189 if (split_num > 1) {
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190 HTaskPtr bsort[half_num];
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191
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192 for (int i = 0; i < half_num-1; i++) {
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193 bsort[i] = manager->create_task(QUICK_SORT);
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194 bsort[i]->add_inData(&data[i*block_num+half_block_num],
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195 sizeof(Data)*block_num);
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196 bsort[i]->add_outData(&data[i*block_num+half_block_num],
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197 sizeof(Data)*block_num);
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198 bsort[i]->set_param(0,(memaddr)block_num);
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199 bsort[i]->set_cpu(SPE_ANY);
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200 }
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201
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202 {
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203 int i = half_num-1;
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204
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205 bsort[i] = manager->create_task(QUICK_SORT);
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206 bsort[i]->add_inData(&data[i*block_num+half_block_num],
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207 sizeof(Data)*last_half_block_num);
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208 bsort[i]->add_outData(&data[i*block_num+half_block_num],
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209 sizeof(Data)*last_half_block_num);
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210 bsort[i]->set_param(0,(memaddr)last_half_block_num);
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211 bsort[i]->set_cpu(SPE_ANY);
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212 }
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213
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214 for (int i = 0; i < half_num; i++) {
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215 bsort[i]->wait_for(fsort[i]);
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216 bsort[i]->wait_for(fsort[i+1]);
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217 bsort[i]->spawn();
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218 }
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219 }
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220
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221 HTask *restart = manager->create_task(RESTART,0,0,0,0);
227
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222 for (int i = 0; i < split_num; i++) {
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223 if (!all) restart->wait_for(fsort[i]);
227
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224 fsort[i]->spawn();
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225 }
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226 restart->spawn();
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227
227
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228 }
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229 #endif
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230
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231 void check_data()
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232 {
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233 int flag = 1;
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234 for(int i=0; i< data_length-1;i++) {
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235 if (data[i].index>data[i+1].index) {
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236 printf("Data are not sorted at %d. %d > %d \n",i, data[i].index,data[i+1].index);
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237 flag = 0;
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238 break;
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239 }
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240 }
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241 if (flag) printf("Data are sorted\n");
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242 }
227
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243
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244
227
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245 void
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246 sort_init(SchedTask *manager, void *a, void *b)
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247 {
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248 cpuNum = (int)a;
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249 int length = (int)b;
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diff changeset
250
227
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251 data = (DataPtr)manager->allocate(sizeof(Data)*length);
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252 data_length = length;
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253
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254 split_num = get_split_num(data_length, cpuNum); // data の分割数
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255 int half_num = split_num-1;
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256 fsort = (HTaskPtr*)manager->allocate(sizeof(HTaskPtr)*split_num);
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257 bsort = (HTaskPtr*)manager->allocate(sizeof(HTaskPtr)*half_num);
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258 memset((void*)bsort,0, sizeof(HTaskPtr)*half_num);
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259
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260 for (int i = 0; i < length; i++) {
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261 data[i].index = manager->get_random()%10000;
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262 data[i].ptr = i;
227
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263 }
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264
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265 sort_start(manager);
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266 }
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267
651
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diff changeset
268 /* end */