add a thp-based huge page alloc fallback
[pcsx_rearmed.git] / deps / libchdr / tests / benchmark.c
CommitLineData
b24e7fce 1#include <libchdr/chd.h>
2#include <stdlib.h>
3#include <stdio.h>
4#include <time.h>
5
6int main(int argc, char** argv)
7{
8 chd_error err;
9 chd_file* file;
10 const chd_header* header;
11 void* buffer;
9e052883 12 unsigned int i;
b24e7fce 13 unsigned int totalbytes;
14 clock_t start, end;
15 double time_taken;
16
17 printf("\nlibchdr benchmark tool....");
18
19 /* Recording the starting clock tick.*/
20 start = clock();
21
22 /* Sequential read all hunks */
23 err = chd_open(argv[1], CHD_OPEN_READ, NULL, &file);
24 if (err)
9e052883 25 {
26 printf("\nchd_open() error: %s", chd_error_string(err));
27 return 0;
28 }
b24e7fce 29 header = chd_get_header(file);
30 totalbytes = header->hunkbytes * header->totalhunks;
31 buffer = malloc(header->hunkbytes);
32 for (i = 0 ; i < header->totalhunks ; i++)
33 {
34 err = chd_read(file, i, buffer);
35 if (err)
36 printf("\nchd_read() error: %s", chd_error_string(err));
37 }
38 free(buffer);
39 chd_close(file);
40
41 /* Recording the end clock tick. */
42 end = clock();
43
44 /* Calculating total time taken by the program. */
45 time_taken = ((double)(end - start)) / ((double)CLOCKS_PER_SEC);
46
47 /* Print results */
48 printf("\nRead %d bytes in %lf seconds", totalbytes, time_taken);
49 printf("\nRate is %lf MB/s", (((double)totalbytes)/(1024*1024)) / time_taken);
50 printf("\n\n");
51 return 0;
52}