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annotate example/fileread/main.cc @ 1827:d1212026e2a0 draft

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some fix
author Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
date Tue, 17 Dec 2013 13:57:34 +0900
parents 82c2b9eec625
children f0dab5fffe7a
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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/stat.h>
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5 #include <sys/time.h>
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6 #include "TaskManager.h"
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7 #include "SchedTask.h"
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8 #include "Func.h"
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9
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10 extern void task_init(void);
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11
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12 static double st_time;
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13 static double ed_time;
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14 static int spe_num = 1;
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15 static CPU_TYPE spe_cpu = SPE_ANY;
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16 static int DIVISION_SIZE = 4096 * 4;
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17
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18 extern TaskManager *manager;
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19 const char *usr_help_str = "Usage: ./fileread [-cpu cpu_num] [-file filename]\n\
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20 -cpu Number of SPE (default 1) \n\
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21 -file Opne file\n";
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22 typedef struct fileread {
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23 struct filesize *self;
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24 int *fd;
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25 long division_size;
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26 long task_number;
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27 long task_num;
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28 long filesize;
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29 long left_size;
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30 int task_blocks;
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31 CPU_TYPE cpu;
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32 } Fileread, *FilereadPtr;
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33
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34 SchedDefineTask1(RUN_BLOCKS,run16);
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35
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36 static int
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37 run16(SchedTask *manager, void *in, void *out) {
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38
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39 FilereadPtr fr = (FilereadPtr)in;
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40 HTaskPtr wait;
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41
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42 for (int i = 0; (fr->left_size > 0) && (i < fr->task_blocks); i++) {
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43 HTaskPtr read = manager->create_task(Read_task);
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44 read->set_cpu(fr->cpu);
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45
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46 if (fr->task_number == fr->task_blocks / 2) wait = read;
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47
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48 //ファイルディスクリプタをそのままタスクに渡してあげる
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49 read->set_inData(0,fr->fd,sizeof(int*));
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50
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51 read->set_param(0,(long)fr->task_number); //生成するTaskが何番目か
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52 read->set_param(1,(long)fr->division_size); //1つのタスクが読み込む量
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53 if(fr->left_size <= fr->division_size){
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54 read->set_param(2,(long)fr->left_size);
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55 }else{
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56 read->set_param(2,(long)fr->division_size);
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57 }
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58 read->spawn();
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59
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60 fr->left_size -= fr->division_size;
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61 fr->task_number++;
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62 }
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63
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64 if (fr->left_size > 0) {
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65 HTaskPtr next = manager->create_task(RUN_BLOCKS, (memaddr)&fr->self, sizeof(memaddr),0,0);
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66 next->wait_for(wait);
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67 next->spawn();
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68 }
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69 return 0;
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70 }
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71
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72 static double
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73 getTime(){
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74 struct timeval tv;
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75 gettimeofday(&tv,NULL);
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76 return tv.tv_sec + (double)tv.tv_usec*1e-6;
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77 }
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78
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79 void
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80 TMend(TaskManager *manager)
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81 {
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82 ed_time = getTime();
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83 printf("Time: %0.6f\n",ed_time-st_time);
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84 }
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85
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86
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87 static char*
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88 init(int argc, char **argv)
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89 {
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90
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91 char *filename = 0;
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92
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93 for (int i = 1; argv[i]; ++i) {
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94 if (strcmp(argv[i], "-cpu") == 0) {
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95 spe_num = atoi(argv[i+1]);
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96 } else if (strcmp(argv[i], "-file") == 0) {
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97 filename = argv[i+1];
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98 }
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99 }
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100
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101 if (filename==0){
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102 puts(usr_help_str);
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103 exit(1);
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104 }
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105
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106 return filename;
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107 }
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108
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109 static void
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110 run_start(TaskManager *manager,char *filename)
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111 {
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112 int *fd = (int*)manager->allocate(sizeof(int));
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113 struct stat *sb = (struct stat*)manager->allocate(sizeof(struct stat));
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114
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115 if ((*fd=open(filename,O_RDONLY,0666))==0) {
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116 fprintf(stderr,"can't open %s\n",filename);
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117 }
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118
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119 if (fstat(*fd,sb)) {
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120 fprintf(stderr,"can't fstat %s\n",filename);
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121 }
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122
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123 FilereadPtr fr = (FilereadPtr)manager->allocate(sizeof(Fileread));
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124
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125 fr->fd = fd;
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126 fr->cpu = spe_cpu;
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127 fr->task_blocks = 16;
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128 fr->filesize = sb->st_size;
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129 fr->left_size = fr->filesize;
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130 fr->division_size = DIVISION_SIZE;
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131 fr->task_num = fr->filesize / DIVISION_SIZE;
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132 fr->task_num += ((fr->filesize % DIVISION_SIZE) != 0);
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133
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134 printf("filesize : %ld\n",fr->filesize);
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135 printf("one_task_size: %ld\n",fr->division_size);
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136 printf("task_num : %ld\n",fr->task_num);
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137
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138 HTaskPtr run = manager->create_task(RUN_BLOCKS, (memaddr)&fr->self, sizeof(memaddr),0,0);
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139 run->spawn();
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140 }
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141
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142
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143 int
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144 TMmain(TaskManager *manager, int argc, char *argv[])
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145 {
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146 char *filename = 0;
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147 filename = init(argc,argv);
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148
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149 if (filename < 0) {
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150 return -1;
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151 }
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152
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153 task_init();
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154 st_time = getTime();
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155 run_start(manager, filename);
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156 manager->set_TMend(TMend);
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157
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158 return 0;
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159 }