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annotate example/fileread/main.cc @ 1722:264a36d30f7f draft

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add time measurement function in fileread
author Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp>
date Mon, 28 Oct 2013 15:25:07 +0900
parents 797e3ec1ca74
children 5a294d8e5643
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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 "Func.h"
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8
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9 extern void task_init(void);
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10
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11 static double st_time;
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12 static double ed_time;
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13 static int spe_num = 1;
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14 static CPU_TYPE spe_cpu = SPE_ANY;
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15 static int ONE_TASK_SIZE = 4096 * 4;
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16
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17 extern TaskManager *manager;
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18 const char *usr_help_str = "Usage: ./fileread [-cpu cpu_num] [-file filename]\n\
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19 -cpu Number of SPE (default 1) \n\
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20 -file Opne file\n";
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22 static double
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23 getTime(){
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24 struct timeval tv;
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25 gettimeofday(&tv,NULL);
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26 return tv.tv_sec + (double)tv.tv_usec*1e-6;
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27 }
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29 void
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30 TMend(TaskManager *manager)
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31 {
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32 ed_time = getTime();
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33 printf("Time: %0.6f\n",ed_time-st_time);
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34 }
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35
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36
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37 static char*
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38 init(int argc, char **argv)
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39 {
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40
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41 char *filename = 0;
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42
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43 for (int i = 1; argv[i]; ++i) {
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44 if (strcmp(argv[i], "-cpu") == 0) {
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45 spe_num = atoi(argv[i+1]);
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46 } else if (strcmp(argv[i], "-file") == 0) {
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47 filename = argv[i+1];
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48 }
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49 }
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50
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51 if (filename==0){
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52 puts(usr_help_str);
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53 exit(1);
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54 }
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55
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56 return filename;
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57 }
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58
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59 static void
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60 run_start(TaskManager *manager,char *filename)
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61 {
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62 HTask *read;
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63 int *fd = (int*)manager->allocate(sizeof(int));
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64
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65 struct stat *sb = (struct stat*)manager->allocate(sizeof(struct stat));
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66
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67 if ((*fd=open(filename,O_RDONLY,0666))==0) {
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68 fprintf(stderr,"can't open %s\n",filename);
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69 }
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70
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71 if (fstat(*fd,sb)) {
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72 fprintf(stderr,"can't fstat %s\n",filename);
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73 }
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74
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75 int filesize = sb->st_size;
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76 int task_num = filesize / ONE_TASK_SIZE;
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77 task_num += ((filesize % ONE_TASK_SIZE) != 0);
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78
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79 printf("filesize : %d\n",filesize);
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80 printf("one_task_size: %d\n",ONE_TASK_SIZE);
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81 printf("task_num : %d\n",task_num);
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82
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83 read = manager->create_task(READ_TASK);
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84 read->set_cpu(spe_cpu);
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85
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86 //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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87 read->set_inData(0,(memaddr)fd,sizeof(int*));
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88
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89 read->set_param(0,ONE_TASK_SIZE); //1つのタスクが読み込む量
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90 read->iterate(task_num); //タスク数分イテレートする
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91 }
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92
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93
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94 int
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95 TMmain(TaskManager *manager, int argc, char *argv[])
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96 {
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97 char *filename = 0;
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98 filename = init(argc,argv);
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99
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100 if (filename < 0) {
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101 return -1;
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102 }
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103
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104 task_init();
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105 st_time = getTime();
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106 run_start(manager, filename);
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107 manager->set_TMend(TMend);
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108
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109 return 0;
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110 }