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 btrfs_key ins;
  17         struct btrfs_key last = { (u64)-1, 0, 0};
  18         char *buf;
  19         int i;
  20         int num;
  21         int ret;
  22         int run_size = 100000;
  23         int max_key =  100000000;
  24         int tree_size = 0;
  25         struct btrfs_path path;
  26         struct btrfs_super_block super;
  27         struct btrfs_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 = btrfs_insert_item(root, &ins, buf, strlen(buf));
  44                 if (!ret)
  45                         tree_size++;
  46                 free(buf);
  47                 if (i == run_size - 5) {
  48                         btrfs_commit_transaction(root, &super);
  49                 }
  50
  51         }
  52         close_ctree(root, &super);
  53
  54         root = open_ctree("dbfile", &super);
  55         printf("starting search\n");
  56         srand(55);
  57         for (i = 0; i < run_size; i++) {
  58                 num = next_key(i, max_key);
  59                 ins.objectid = num;
  60                 btrfs_init_path(&path);
  61                 if (i % 10000 == 0)
  62                         fprintf(stderr, "search %d:%d\n", num, i);
  63                 ret = btrfs_search_slot(root, &ins, &path, 0, 0);
  64                 if (ret) {
  65                         btrfs_print_tree(root, root->node);
  66                         printf("unable to find %d\n", num);
  67                         exit(1);
  68                 }
  69                 btrfs_release_path(root, &path);
  70         }
  71         close_ctree(root, &super);
  72         root = open_ctree("dbfile", &super);
  73         printf("node %p level %d total ptrs %d free spc %lu\n", root->node,
  74                 btrfs_header_level(&root->node->node.header),
  75                 btrfs_header_nritems(&root->node->node.header),
  76                 NODEPTRS_PER_BLOCK -
  77                 btrfs_header_nritems(&root->node->node.header));
  78         printf("all searches good, deleting some items\n");
  79         i = 0;
  80         srand(55);
  81         for (i = 0 ; i < run_size/4; i++) {
  82                 num = next_key(i, max_key);
  83                 ins.objectid = num;
  84                 btrfs_init_path(&path);
  85                 ret = btrfs_search_slot(root, &ins, &path, -1, 1);
  86                 if (!ret) {
  87                         if (i % 10000 == 0)
  88                                 fprintf(stderr, "del %d:%d\n", num, i);
  89                         ret = btrfs_del_item(root, &path);
  90                         if (ret != 0)
  91                                 BUG();
  92                         tree_size--;
  93                 }
  94                 btrfs_release_path(root, &path);
  95         }
  96         close_ctree(root, &super);
  97         root = open_ctree("dbfile", &super);
  98         srand(128);
  99         for (i = 0; i < run_size; i++) {
 100                 buf = malloc(64);
 101                 num = next_key(i, max_key);
 102                 sprintf(buf, "string-%d", num);
 103                 ins.objectid = num;
 104                 if (i % 10000 == 0)
 105                         fprintf(stderr, "insert %d:%d\n", num, i);
 106                 ret = btrfs_insert_item(root, &ins, buf, strlen(buf));
 107                 if (!ret)
 108                         tree_size++;
 109                 free(buf);
 110         }
 111         close_ctree(root, &super);
 112         root = open_ctree("dbfile", &super);
 113         srand(128);
 114         printf("starting search2\n");
 115         for (i = 0; i < run_size; i++) {
 116                 num = next_key(i, max_key);
 117                 ins.objectid = num;
 118                 btrfs_init_path(&path);
 119                 if (i % 10000 == 0)
 120                         fprintf(stderr, "search %d:%d\n", num, i);
 121                 ret = btrfs_search_slot(root, &ins, &path, 0, 0);
 122                 if (ret) {
 123                         btrfs_print_tree(root, root->node);
 124                         printf("unable to find %d\n", num);
 125                         exit(1);
 126                 }
 127                 btrfs_release_path(root, &path);
 128         }
 129         printf("starting big long delete run\n");
 130         while(root->node &&
 131               btrfs_header_nritems(&root->node->node.header) > 0) {
 132                 struct btrfs_leaf *leaf;
 133                 int slot;
 134                 ins.objectid = (u64)-1;
 135                 btrfs_init_path(&path);
 136                 ret = btrfs_search_slot(root, &ins, &path, -1, 1);
 137                 if (ret == 0)
 138                         BUG();
 139
 140                 leaf = &path.nodes[0]->leaf;
 141                 slot = path.slots[0];
 142                 if (slot != btrfs_header_nritems(&leaf->header))
 143                         BUG();
 144                 while(path.slots[0] > 0) {
 145                         path.slots[0] -= 1;
 146                         slot = path.slots[0];
 147                         leaf = &path.nodes[0]->leaf;
 148
 149                         btrfs_disk_key_to_cpu(&last, &leaf->items[slot].key);
 150                         if (tree_size % 10000 == 0)
 151                                 printf("big del %d:%d\n", tree_size, i);
 152                         ret = btrfs_del_item(root, &path);
 153                         if (ret != 0) {
 154                                 printf("del_item returned %d\n", ret);
 155                                 BUG();
 156                         }
 157                         tree_size--;
 158                 }
 159                 btrfs_release_path(root, &path);
 160         }
 161         /*
 162         printf("previous tree:\n");
 163         btrfs_print_tree(root, root->commit_root);
 164         printf("map before commit\n");
 165         btrfs_print_tree(root->extent_root, root->extent_root->node);
 166         */
 167         btrfs_commit_transaction(root, &super);
 168         printf("tree size is now %d\n", tree_size);
 169         printf("root %p commit root %p\n", root->node, root->commit_root);
 170         printf("map tree\n");
 171         btrfs_print_tree(root->extent_root, root->extent_root->node);
 172         close_ctree(root, &super);
 173         return 0;
 174 }