axmap.c revision ad1f90aa84ba96916d02043958ee416a499f3f25 
1#include <stdio.h>
2#include <stdlib.h>
3#include <fcntl.h>
4#include <string.h>
5#include <unistd.h>
6#include <inttypes.h>
7
8#include "../lib/lfsr.h"
9
10struct axmap;
11void axmap_set(struct axmap *, uint64_t);
12struct axmap *axmap_new(uint64_t size);
13
14void *smalloc(size_t size)
15{
16	return malloc(size);
17}
18
19void sfree(void *ptr)
20{
21	free(ptr);
22}
23
24int main(int argc, char *argv[])
25{
26	struct fio_lfsr lfsr;
27	size_t size = (1UL << 28) - 200;
28	struct axmap *map;
29
30	if (argc > 1)
31		size = strtoul(argv[1], NULL, 10);
32
33	printf("Using %llu entries\n", (unsigned long long) size);
34
35	lfsr_init(&lfsr, size);
36	map = axmap_new(size);
37
38	while (size--) {
39		uint64_t val;
40
41		lfsr_next(&lfsr, &val);
42		axmap_set(map, val);
43	}
44
45	return 0;
46}
47