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/cvs/liblzf/bench.c
Revision: 1.3
Committed: Tue Mar 8 19:59:52 2005 UTC (19 years, 8 months ago) by root
Content type: text/plain
Branch: MAIN
CVS Tags: rel-1_5, rel-2_0, rel-2_1, rel-1_7, rel-1_51, rel-1_6
Changes since 1.2: +1 -1 lines
Log Message:
*** empty log message ***

File Contents

# User Rev Content
1 root 1.1 #include <stdio.h>
2     #include <assert.h>
3     #include <string.h>
4    
5     #include "lzf.h"
6    
7     typedef unsigned long tval;
8     typedef unsigned long long stamp64;
9    
10     extern inline tval stamp(void)
11     {
12     tval tsc;
13     asm volatile("rdtsc" : "=a" (tsc) : : "edx");
14     return tsc;
15     }
16    
17     extern inline tval measure(tval t)
18     {
19     tval tsc;
20     asm volatile("rdtsc" : "=a" (tsc) : : "edx");
21     if (tsc>t)
22     return tsc-t;
23     else
24     return t-tsc;
25     }
26    
27     #define DSIZE 1000000
28    
29     unsigned char data[DSIZE], data2[DSIZE*2], data3[DSIZE*2];
30    
31     int main(void)
32     {
33     tval s;
34     tval si[1000];
35     int i, l, j;
36     int min = 1<<30;
37 root 1.2 int lp;
38 root 1.1
39     FILE *f = fopen ("data", "r");
40     fread (data, DSIZE, 1, f);
41     fclose (f);
42    
43 root 1.3 for (lp = 0; lp < 1000; lp++) {
44 root 1.1 s=stamp();
45     l = lzf_compress (data, DSIZE, data2, DSIZE*2);
46     j = lzf_decompress (data2, l, data3, DSIZE*2);
47     si[0]=measure(s);
48    
49     printf ("\r%10d (%d) ", si[0], l);
50     if (si[0] < min && si[0] > 0)
51     {
52     printf ("\n");
53     min = si[0];
54     }
55    
56     fflush (stdout);
57    
58     assert (memcmp (data, data3, DSIZE) == 0);
59     }
60     return 0;
61     }
62    
63    
64