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#include <stdio.h>
#include <stdlib.h>
#include "kerncompat.h"
#include "radix-tree.h"
#include "ctree.h"
#include "disk-io.h"
#include "print-tree.h"
/* for testing only */
int next_key(int i, int max_key) {
return rand() % max_key;
// return i;
}
int main(int ac, char **av) {
struct btrfs_key ins;
struct btrfs_key last = { (u64)-1, 0, 0};
char *buf;
int i;
int num;
int ret;
int run_size = 100000;
int max_key = 100000000;
int tree_size = 0;
struct btrfs_path path;
struct btrfs_super_block super;
struct btrfs_root *root;
radix_tree_init();
root = open_ctree("dbfile", &super);
srand(55);
for (i = 0; i < run_size; i++) {
buf = malloc(64);
num = next_key(i, max_key);
// num = i;
sprintf(buf, "string-%d", num);
if (i % 10000 == 0)
fprintf(stderr, "insert %d:%d\n", num, i);
ins.objectid = num;
ins.offset = 0;
ins.flags = 0;
ret = btrfs_insert_item(root, &ins, buf, strlen(buf));
if (!ret)
tree_size++;
free(buf);
if (i == run_size - 5) {
btrfs_commit_transaction(root, &super);
}
}
close_ctree(root, &super);
root = open_ctree("dbfile", &super);
printf("starting search\n");
srand(55);
for (i = 0; i < run_size; i++) {
num = next_key(i, max_key);
ins.objectid = num;
btrfs_init_path(&path);
if (i % 10000 == 0)
fprintf(stderr, "search %d:%d\n", num, i);
ret = btrfs_search_slot(root, &ins, &path, 0, 0);
if (ret) {
btrfs_print_tree(root, root->node);
printf("unable to find %d\n", num);
exit(1);
}
btrfs_release_path(root, &path);
}
close_ctree(root, &super);
root = open_ctree("dbfile", &super);
printf("node %p level %d total ptrs %d free spc %lu\n", root->node,
btrfs_header_level(&root->node->node.header),
btrfs_header_nritems(&root->node->node.header),
BTRFS_NODEPTRS_PER_BLOCK(root) -
btrfs_header_nritems(&root->node->node.header));
printf("all searches good, deleting some items\n");
i = 0;
srand(55);
for (i = 0 ; i < run_size/4; i++) {
num = next_key(i, max_key);
ins.objectid = num;
btrfs_init_path(&path);
ret = btrfs_search_slot(root, &ins, &path, -1, 1);
if (!ret) {
if (i % 10000 == 0)
fprintf(stderr, "del %d:%d\n", num, i);
ret = btrfs_del_item(root, &path);
if (ret != 0)
BUG();
tree_size--;
}
btrfs_release_path(root, &path);
}
close_ctree(root, &super);
root = open_ctree("dbfile", &super);
srand(128);
for (i = 0; i < run_size; i++) {
buf = malloc(64);
num = next_key(i, max_key);
sprintf(buf, "string-%d", num);
ins.objectid = num;
if (i % 10000 == 0)
fprintf(stderr, "insert %d:%d\n", num, i);
ret = btrfs_insert_item(root, &ins, buf, strlen(buf));
if (!ret)
tree_size++;
free(buf);
}
close_ctree(root, &super);
root = open_ctree("dbfile", &super);
srand(128);
printf("starting search2\n");
for (i = 0; i < run_size; i++) {
num = next_key(i, max_key);
ins.objectid = num;
btrfs_init_path(&path);
if (i % 10000 == 0)
fprintf(stderr, "search %d:%d\n", num, i);
ret = btrfs_search_slot(root, &ins, &path, 0, 0);
if (ret) {
btrfs_print_tree(root, root->node);
printf("unable to find %d\n", num);
exit(1);
}
btrfs_release_path(root, &path);
}
printf("starting big long delete run\n");
while(root->node &&
btrfs_header_nritems(&root->node->node.header) > 0) {
struct btrfs_leaf *leaf;
int slot;
ins.objectid = (u64)-1;
btrfs_init_path(&path);
ret = btrfs_search_slot(root, &ins, &path, -1, 1);
if (ret == 0)
BUG();
leaf = &path.nodes[0]->leaf;
slot = path.slots[0];
if (slot != btrfs_header_nritems(&leaf->header))
BUG();
while(path.slots[0] > 0) {
path.slots[0] -= 1;
slot = path.slots[0];
leaf = &path.nodes[0]->leaf;
btrfs_disk_key_to_cpu(&last, &leaf->items[slot].key);
if (tree_size % 10000 == 0)
printf("big del %d:%d\n", tree_size, i);
ret = btrfs_del_item(root, &path);
if (ret != 0) {
printf("del_item returned %d\n", ret);
BUG();
}
tree_size--;
}
btrfs_release_path(root, &path);
}
/*
printf("previous tree:\n");
btrfs_print_tree(root, root->commit_root);
printf("map before commit\n");
btrfs_print_tree(root->extent_root, root->extent_root->node);
*/
btrfs_commit_transaction(root, &super);
printf("tree size is now %d\n", tree_size);
printf("root %p commit root %p\n", root->node, root->commit_root);
printf("map tree\n");
btrfs_print_tree(root->extent_root, root->extent_root->node);
close_ctree(root, &super);
return 0;
}
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