t/axmap.c

   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
  11 void *smalloc(size_t size)
  12 {
  13         return malloc(size);
  14 }
  15
  16 void sfree(void *ptr)
  17 {
  18         free(ptr);
  19 }
  20
  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
  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
 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 }