annotate example/grep/main.cc @ 0:04e28d8d3c6f

first commit
author Daiki KINJYO <e085722@ie.u-ryukyu.ac.jp>
date Mon, 08 Nov 2010 01:23:25 +0900
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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 <sys/mman.h>
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5 #include <sys/types.h>
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6 #include <sys/stat.h>
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7 #include <fcntl.h>
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8 #include <unistd.h>
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9 #include "TaskManager.h"
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10 #include "SchedTask.h"
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11 #include "Func.h"
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12 #include "WordGrep.h"
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13 extern void task_init();
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14
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15 int all = 0;
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16 int use_task_array = 0;
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17 int use_compat = 0;
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18 int array_task_num = 8;
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19 int spe_num = 1;
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20 int num = 0;
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21
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22 //static int blocks = 48;
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23 //static int division = 1024*10;
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24 //static int division_int = 4096;
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25
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26
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27 static int blocks = 2;
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28 static int division = 5;
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29 static int division_int = 5;
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30
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31 int first_over_lap;
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32 int over_lap;
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33
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34 #define READBUF 1024*16
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35
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36 const char *usr_help_str = "Usage: ./word_count [-file filename]\n";
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37
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38 SchedDefineTask1(RUN_TASK_BLOCKS,run16);
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39
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40 typedef struct {
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41 caddr_t file_mmap;
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42 off_t size;
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43 }st_mmap_t;
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44
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45 /*与えられたsizeをfix_byte_sizeの倍数にする*/
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46 static int fix_byte(int size,int fix_byte_size){
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47 size = (size/fix_byte_size)*fix_byte_size +
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48 ((size%fix_byte_size)!= 0)*fix_byte_size;
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49 return size;
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50 }
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51
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52 static st_mmap_t my_mmap(char *filename){
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53 /*マッピングしてその場所を返す*/
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54 int fd = -1;
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55 int map = MAP_PRIVATE;
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56 st_mmap_t st_mmap;
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57 struct stat sb;
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58 /*ファイルオープン*/
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59 if ((fd=open(filename,O_RDONLY,0666))==0){
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60 fprintf(stderr,"can't open %s\n",filename);
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61 } /*ファイルが使われていないか*/
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62 if (fstat(fd,&sb)) {
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63 fprintf(stderr,"can't fstat %s\n",filename);
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64 } /*sizeをページングサイズの倍数にあわせる*/
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65 st_mmap.size = fix_byte(sb.st_size,division_int);
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66 /*マッピングしてその場所を返す*/
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67 st_mmap.file_mmap =
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68 (char*)mmap(NULL,st_mmap.size,PROT_READ,map,fd,(off_t)0);
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69 if (st_mmap.file_mmap == (caddr_t)-1) {
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70 perror(NULL); exit(0);
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71 }
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72 return st_mmap;
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73 }
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74
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75
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76
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77 /*タスク生成*/
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78 static void run_tasks(SchedTask *manager, WordGrep *w, int task_count, HTaskPtr t_next, int size) {
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79 over_lap = first_over_lap;
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80 /*タスク数が1つのspeで処理する数より少なければその数を処理する*/
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81 if (task_count < array_task_num) {
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82 array_task_num = task_count;
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83 }
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84 //全タスクのループ
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85 for (int i = 0; i < task_count;i+= array_task_num) {
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86 HTask *h_exec = 0;
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87 //blockごとのループ
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88 for (int j = 0; j < array_task_num;j++) {
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89 int i = w->task_spawned++;
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90
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91 //タスクが最後の場合その分だけ処理
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92 if (w->size <= size + over_lap) {
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93 size = w->size;
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94 over_lap = 0;
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95 }
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96 if (size==0) break;
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97 /*オーバーラップした文字列を生成してタスク生成*/
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98 h_exec = manager->create_task(TASK_EXEC);
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99 h_exec->set_inData(
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100 0,w->file_mmap + i*w->division_size,
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101 size+over_lap);
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102 h_exec->set_outData(
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103 0,w->o_data + i*w->out_size,
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104 w->division_out_size);
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105 t_next->wait_for(h_exec);
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106 /*タスク実行*/
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107 h_exec->set_cpu(SPE_ANY);
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108 h_exec->spawn();
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109 /*終了した分サイズをタスク数を引く*/
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110 w->size -= size;
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111 w->task_num--;
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112 }
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113 }
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114 }
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115
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116 /** * このTaskは、PPE上で実行されるので、並列に実行されることはない
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117 * 二つ実行されていて、Task が足りなくなることがないようにしている。
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118 */
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119
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120 static int run16(SchedTask *manager, void *in, void *out){
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121 WordGrep *w = *(WordGrep **)in;
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122 /*タスク数が1ブロックで処理できる数よりも少ない場合*/
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123 /*if (!(w->size > w->division_size))でも同じ*/
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124 if(w->task_num <= w->task_blocks) {
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125 if (w->size == w->division_size) {
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126 run_tasks(manager,w,w->task_num,
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127 w->t_print, w->division_size);
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128 } else {
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129 run_tasks(manager,w,1, w->t_print, w->size);
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130 }
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131 } else {
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132 HTaskPtr t_next = manager->create_task(RUN_TASK_BLOCKS,
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133 (memaddr)&w->self,sizeof(memaddr),0,0);
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134 w->t_print->wait_for(t_next);
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135 run_tasks(manager,w, w->task_blocks, t_next, w->division_size);
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136 t_next->spawn();
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137 }
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138 return 0;
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139 }
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140
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141
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142
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143 static void run_start(TaskManager *manager, char *filename){
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144 HTaskPtr t_print;
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145 st_mmap_t st_mmap;
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146 st_mmap = my_mmap(filename);
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147 WordGrep *w = (WordGrep*)manager->allocate(sizeof(WordGrep));
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148 w->self = w;
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149 w->task_spawned = 0;
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150
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151 /*sizeはdivision_sizeの倍数にしている。*/
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152 w->size = w->file_size = st_mmap.size;
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153 w->file_mmap = st_mmap.file_mmap;
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154 /* 1task分のデータサイズ(byte) */
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155 if (w->size >= division){
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156 w->division_size = division;
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157 } else {
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158 w->division_size = w->size;
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159 }
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160 /* "word num" and "line num" */
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161 //w->status_num = 2;
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162 /*taskの数 */
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163 w->task_num = w->size / w->division_size;
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164 w->task_num = w->task_num + (w->division_size*w->task_num < w->size);
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165
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166 int out_task_num = w->task_num;
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167 w->out_task_num = out_task_num;
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168 w->task_blocks = blocks;
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169
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170 /* out用のdivision_size.statusが1つなので、最大16byteになるように*/
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171 w->division_out_size = sizeof(unsigned long long)*4;
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172 int out_size = w->division_out_size*out_task_num;
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173 w->o_data = (int*)manager->allocate(out_size);
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174 w->out_size = 4;
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175
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176
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177 /*各SPEの結果を合計して出力するタスク*/
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178 t_print = manager->create_task(
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179 TASK_PRINT,(memaddr)&w->self,sizeof(memaddr),0,0);
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180 w->t_print = t_print;
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181 for(int i = 0;i<1;i++) {
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182 /* Task を task_blocks ずつ起動する Task */
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183 /*serialize されていると仮定する... */
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184 HTaskPtr t_exec= manager->create_task(
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185 RUN_TASK_BLOCKS,(memaddr)&w->self,sizeof(memaddr),0,0);
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186 t_print->wait_for(t_exec);
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187 t_exec->spawn();
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188 }
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189 t_print->spawn();
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190 }
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191
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192 static char* init(int argc, char **argv){
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193 char *filename = 0;
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194 use_task_array = 0;
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195 for (int i = 1; argv[i]; ++i) {
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196 if (strcmp(argv[i], "-file") == 0) {
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197 filename = argv[i+1];
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198 } else if (strcmp(argv[i], "-cpu") == 0) {
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199 spe_num = atoi(argv[i+1]);
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200 }
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201 }
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202 first_over_lap = 2;
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203 over_lap = first_over_lap;
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204 if (filename==0) {
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205 puts(usr_help_str);
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206 exit(1);
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207 }
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208 return filename;
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209 }
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210
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211
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212 int TMmain(TaskManager *manager, int argc, char *argv[]){
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213 char *filename = 0; //引数の入力
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214 filename = init(argc, argv);
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215 if (filename < 0) {
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216 return -1;
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217 }
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218 task_init();
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219 run_start(manager, filename);
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220 return 0;
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221 }