c_cpp/lib/klib/test/kseq_bench2.c

   1 #include <stdio.h>
   2 #include <time.h>
   3 #include <stdint.h>
   4 #include <stdlib.h>
   5 #include <fcntl.h>
   6 #include "kseq.h"
   7 KSTREAM_INIT(int, read, 4096)
   8
   9 #define BUF_SIZE 65536
  10
  11 int main(int argc, char *argv[])
  12 {
  13         clock_t t;
  14         if (argc == 1) {
  15                 fprintf(stderr, "Usage: %s <in.txt>\n", argv[0]);
  16                 return 1;
  17         }
  18         {
  19                 FILE *fp;
  20                 char *s;
  21                 t = clock();
  22                 s = malloc(BUF_SIZE);
  23                 fp = fopen(argv[1], "r");
  24                 while (fgets(s, BUF_SIZE, fp));
  25                 fclose(fp);
  26                 fprintf(stderr, "[fgets] %.2f sec\n", (float)(clock() - t) / CLOCKS_PER_SEC);
  27         }
  28         {
  29                 int fd, dret;
  30                 kstream_t *ks;
  31                 kstring_t s;
  32                 t = clock();
  33                 s.l = s.m = 0; s.s = 0;
  34                 fd = open(argv[1], O_RDONLY);
  35                 ks = ks_init(fd);
  36                 while (ks_getuntil(ks, '\n', &s, &dret) >= 0);
  37                 free(s.s);
  38                 ks_destroy(ks);
  39                 close(fd);
  40                 fprintf(stderr, "[kstream] %.2f sec\n", (float)(clock() - t) / CLOCKS_PER_SEC);
  41         }
  42         return 0;
  43 }