trunk/masters-pmf/java_speed_test/c/main.c

   1 #define _LARGEFILE_SOURCE
   2 #define _FILE_OFFSET_BITS 64
   3
   4 #include <sys/types.h>
   5 #include <sys/stat.h>
   6 #include <fcntl.h>
   7 #include <unistd.h>
   8
   9 #include <stdio.h>
  10 #include <stdlib.h>
  11 #include <string.h>
  12
  13 int main(int argc, char **argv)
  14 {
  15         int result;
  16         FILE *fp;
  17         int print = 0;
  18         int i;
  19         char *filename = NULL;
  20
  21         if(argc > 1) {
  22                 for(i=1; i<argc; i++) {
  23                         if(!strcmp(argv[i], "-p")) {
  24                                 print = 1;
  25                         }
  26                         else {
  27                                 filename = argv[i];
  28                         }
  29                 }
  30         }
  31
  32         if(filename == NULL) {
  33                 fprintf(stderr, "No trace file specified\n");
  34                 return 1;
  35         }
  36
  37         fp = fopen(filename, "r");
  38         if(fp == NULL) {
  39                 perror("fopen");
  40                 return 1;
  41         }
  42
  43         while(1) {
  44                 unsigned long timestamp;
  45                 unsigned short id;
  46                 unsigned char arglen;
  47                 char *args;
  48
  49                 fscanf(fp, "%4c", &timestamp);
  50                 if(feof(fp))
  51                         break;
  52
  53                 fscanf(fp, "%2c", &id);
  54
  55                 fscanf(fp, "%1c", &arglen);
  56
  57                 args = malloc(arglen);
  58
  59                 // manually specify length of args
  60                 fscanf(fp, "%15c", args);
  61
  62                 unsigned short arg1;
  63                 char *arg2;
  64
  65                 arg1 = *(unsigned short *)args;
  66                 arg2 = args+2;
  67
  68                 if(print)
  69                         printf("timestamp %lu id %hu args=(arg1=%hu arg2=\"%s\")\n", timestamp, id, arg1, arg2);
  70
  71                 free(args);
  72
  73         }
  74         fclose(fp);
  75
  76         return 0;
  77 }