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 #include "../lib/axmap.h"
10
smalloc(size_t size)11 void *smalloc(size_t size)
12 {
13 return malloc(size);
14 }
15
sfree(void * ptr)16 void sfree(void *ptr)
17 {
18 free(ptr);
19 }
20
test_regular(size_t size,int seed)21 static int test_regular(size_t size, int seed)
22 {
23 struct fio_lfsr lfsr;
24 struct axmap *map;
25 size_t osize;
26 uint64_t ff;
27 int err;
28
29 printf("Using %llu entries...", (unsigned long long) size);
30 fflush(stdout);
31
32 lfsr_init(&lfsr, size, seed, seed & 0xF);
33 map = axmap_new(size);
34 osize = size;
35 err = 0;
36
37 while (size--) {
38 uint64_t val;
39
40 if (lfsr_next(&lfsr, &val)) {
41 printf("lfsr: short loop\n");
42 err = 1;
43 break;
44 }
45 if (axmap_isset(map, val)) {
46 printf("bit already set\n");
47 err = 1;
48 break;
49 }
50 axmap_set(map, val);
51 if (!axmap_isset(map, val)) {
52 printf("bit not set\n");
53 err = 1;
54 break;
55 }
56 }
57
58 if (err)
59 return err;
60
61 ff = axmap_next_free(map, osize);
62 if (ff != (uint64_t) -1ULL) {
63 printf("axmap_next_free broken: got %llu\n", (unsigned long long) ff);
64 return 1;
65 }
66
67 printf("pass!\n");
68 axmap_free(map);
69 return 0;
70 }
71
test_multi(size_t size,unsigned int bit_off)72 static int test_multi(size_t size, unsigned int bit_off)
73 {
74 unsigned int map_size = size;
75 struct axmap *map;
76 uint64_t val = bit_off;
77 int i, err;
78
79 printf("Test multi %llu entries %u offset...", (unsigned long long) size, bit_off);
80 fflush(stdout);
81
82 map = axmap_new(map_size);
83 while (val + 128 <= map_size) {
84 err = 0;
85 for (i = val; i < val + 128; i++) {
86 if (axmap_isset(map, val + i)) {
87 printf("bit already set\n");
88 err = 1;
89 break;
90 }
91 }
92
93 if (err)
94 break;
95
96 err = axmap_set_nr(map, val, 128);
97 if (err != 128) {
98 printf("only set %u bits\n", err);
99 break;
100 }
101
102 err = 0;
103 for (i = 0; i < 128; i++) {
104 if (!axmap_isset(map, val + i)) {
105 printf("bit not set: %llu\n", (unsigned long long) val + i);
106 err = 1;
107 break;
108 }
109 }
110
111 val += 128;
112 if (err)
113 break;
114 }
115
116 if (!err)
117 printf("pass!\n");
118
119 axmap_free(map);
120 return err;
121 }
122
main(int argc,char * argv[])123 int main(int argc, char *argv[])
124 {
125 size_t size = (1UL << 23) - 200;
126 int seed = 1;
127
128 if (argc > 1) {
129 size = strtoul(argv[1], NULL, 10);
130 if (argc > 2)
131 seed = strtoul(argv[2], NULL, 10);
132 }
133
134 if (test_regular(size, seed))
135 return 1;
136 if (test_multi(size, 0))
137 return 2;
138 if (test_multi(size, 17))
139 return 3;
140
141 return 0;
142 }
143