fs/btrfs/quick-test.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include "kerncompat.h"
   4 #include "radix-tree.h"
   5 #include "ctree.h"
   6 #include "disk-io.h"
   7 #include "print-tree.h"
   8
   9 /* for testing only */
  10 int next_key(int i, int max_key) {
  11         return rand() % max_key;
  12         //return i;
  13 }
  14
  15 int main(int ac, char **av) {
  16         struct key ins;
  17         struct key last = { (u64)-1, 0, 0};
  18         char *buf;
  19         int i;
  20         int num;
  21         int ret;
  22         int run_size = 1024;
  23         int max_key =  100000000;
  24         int tree_size = 0;
  25         struct ctree_path path;
  26         struct ctree_super_block super;
  27         struct ctree_root *root;
  28
  29         radix_tree_init();
  30
  31         root = open_ctree("dbfile", &super);
  32         srand(55);
  33         for (i = 0; i < run_size; i++) {
  34                 buf = malloc(64);
  35                 num = next_key(i, max_key);
  36                 // num = i;
  37                 sprintf(buf, "string-%d", num);
  38                 if (i % 10000 == 0)
  39                         fprintf(stderr, "insert %d:%d\n", num, i);
  40                 ins.objectid = num;
  41                 ins.offset = 0;
  42                 ins.flags = 0;
  43                 ret = insert_item(root, &ins, buf, strlen(buf));
  44                 if (!ret)
  45                         tree_size++;
  46                 free(buf);
  47         }
  48         write_ctree_super(root, &super);
  49         close_ctree(root);
  50
  51         root = open_ctree("dbfile", &super);
  52         printf("starting search\n");
  53         srand(55);
  54         for (i = 0; i < run_size; i++) {
  55                 num = next_key(i, max_key);
  56                 ins.objectid = num;
  57                 init_path(&path);
  58                 if (i % 10000 == 0)
  59                         fprintf(stderr, "search %d:%d\n", num, i);
  60                 ret = search_slot(root, &ins, &path, 0, 0);
  61                 if (ret) {
  62                         print_tree(root, root->node);
  63                         printf("unable to find %d\n", num);
  64                         exit(1);
  65                 }
  66                 release_path(root, &path);
  67         }
  68         write_ctree_super(root, &super);
  69         close_ctree(root);
  70         root = open_ctree("dbfile", &super);
  71         printf("node %p level %d total ptrs %d free spc %lu\n", root->node,
  72                 node_level(root->node->node.header.flags),
  73                 root->node->node.header.nritems,
  74                 NODEPTRS_PER_BLOCK - root->node->node.header.nritems);
  75         printf("all searches good, deleting some items\n");
  76         i = 0;
  77         srand(55);
  78         for (i = 0 ; i < run_size/4; i++) {
  79                 num = next_key(i, max_key);
  80                 ins.objectid = num;
  81                 init_path(&path);
  82                 ret = search_slot(root, &ins, &path, -1, 1);
  83                 if (!ret) {
  84                         if (i % 10000 == 0)
  85                                 fprintf(stderr, "del %d:%d\n", num, i);
  86                         ret = del_item(root, &path);
  87                         if (ret != 0)
  88                                 BUG();
  89                         tree_size--;
  90                 }
  91                 release_path(root, &path);
  92         }
  93         write_ctree_super(root, &super);
  94         close_ctree(root);
  95         root = open_ctree("dbfile", &super);
  96         srand(128);
  97         for (i = 0; i < run_size; i++) {
  98                 buf = malloc(64);
  99                 num = next_key(i, max_key);
 100                 sprintf(buf, "string-%d", num);
 101                 ins.objectid = num;
 102                 if (i % 10000 == 0)
 103                         fprintf(stderr, "insert %d:%d\n", num, i);
 104                 ret = insert_item(root, &ins, buf, strlen(buf));
 105                 if (!ret)
 106                         tree_size++;
 107                 free(buf);
 108         }
 109         write_ctree_super(root, &super);
 110         close_ctree(root);
 111         root = open_ctree("dbfile", &super);
 112         srand(128);
 113         printf("starting search2\n");
 114         for (i = 0; i < run_size; i++) {
 115                 num = next_key(i, max_key);
 116                 ins.objectid = num;
 117                 init_path(&path);
 118                 if (i % 10000 == 0)
 119                         fprintf(stderr, "search %d:%d\n", num, i);
 120                 ret = search_slot(root, &ins, &path, 0, 0);
 121                 if (ret) {
 122                         print_tree(root, root->node);
 123                         printf("unable to find %d\n", num);
 124                         exit(1);
 125                 }
 126                 release_path(root, &path);
 127         }
 128         printf("starting big long delete run\n");
 129         while(root->node && root->node->node.header.nritems > 0) {
 130                 struct leaf *leaf;
 131                 int slot;
 132                 ins.objectid = (u64)-1;
 133                 init_path(&path);
 134                 ret = search_slot(root, &ins, &path, -1, 1);
 135                 if (ret == 0)
 136                         BUG();
 137
 138                 leaf = &path.nodes[0]->leaf;
 139                 slot = path.slots[0];
 140                 if (slot != leaf->header.nritems)
 141                         BUG();
 142                 while(path.slots[0] > 0) {
 143                         path.slots[0] -= 1;
 144                         slot = path.slots[0];
 145                         leaf = &path.nodes[0]->leaf;
 146
 147                         memcpy(&last, &leaf->items[slot].key, sizeof(last));
 148                         if (tree_size % 10000 == 0)
 149                                 printf("big del %d:%d\n", tree_size, i);
 150                         ret = del_item(root, &path);
 151                         if (ret != 0) {
 152                                 printf("del_item returned %d\n", ret);
 153                                 BUG();
 154                         }
 155                         tree_size--;
 156                 }
 157                 release_path(root, &path);
 158         }
 159         printf("tree size is now %d\n", tree_size);
 160         printf("map tree\n");
 161         print_tree(root->extent_root, root->extent_root->node);
 162         write_ctree_super(root, &super);
 163         close_ctree(root);
 164         return 0;
 165 }