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/*
* Copyright (C) 2007 Oracle. All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License v2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include "kerncompat.h"
#include "radix-tree.h"
#include "ctree.h"
#include "disk-io.h"
#include "print-tree.h"
#include "transaction.h"
/* for testing only */
static 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 = 300000;
int max_key = 100000000;
int tree_size = 2;
struct btrfs_path path;
struct btrfs_root *root;
struct btrfs_trans_handle *trans;
buf = malloc(512);
memset(buf, 0, 512);
radix_tree_init();
root = open_ctree(av[1], BTRFS_SUPER_INFO_OFFSET, OPEN_CTREE_WRITES);
if (!root) {
fprintf(stderr, "Open ctree failed\n");
exit(1);
}
trans = btrfs_start_transaction(root, 1);
srand(55);
btrfs_set_key_type(&ins, BTRFS_STRING_ITEM_KEY);
for (i = 0; i < run_size; i++) {
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;
ret = btrfs_insert_item(trans, root, &ins, buf, 512);
if (!ret)
tree_size++;
if (i == run_size - 5) {
btrfs_commit_transaction(trans, root);
trans = btrfs_start_transaction(root, 1);
}
}
btrfs_commit_transaction(trans, root);
close_ctree(root);
exit(1);
root = open_ctree(av[1], BTRFS_SUPER_INFO_OFFSET, OPEN_CTREE_WRITES);
if (!root) {
fprintf(stderr, "Open ctree failed\n");
exit(1);
}
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(NULL, root, &ins, &path, 0, 0);
if (ret) {
btrfs_print_tree(root, root->node, 1);
printf("unable to find %d\n", num);
exit(1);
}
btrfs_release_path(&path);
}
close_ctree(root);
root = open_ctree(av[1], BTRFS_SUPER_INFO_OFFSET, OPEN_CTREE_WRITES);
if (!root) {
fprintf(stderr, "Open ctree failed\n");
exit(1);
}
printf("node %p level %d total ptrs %d free spc %lu\n", root->node,
btrfs_header_level(root->node),
btrfs_header_nritems(root->node),
(unsigned long)BTRFS_NODEPTRS_PER_BLOCK(root) -
btrfs_header_nritems(root->node));
printf("all searches good, deleting some items\n");
i = 0;
srand(55);
trans = btrfs_start_transaction(root, 1);
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(trans, root, &ins, &path, -1, 1);
if (!ret) {
if (i % 10000 == 0)
fprintf(stderr, "del %d:%d\n", num, i);
ret = btrfs_del_item(trans, root, &path);
if (ret != 0)
BUG();
tree_size--;
}
btrfs_release_path(&path);
}
btrfs_commit_transaction(trans, root);
close_ctree(root);
root = open_ctree(av[1], BTRFS_SUPER_INFO_OFFSET, OPEN_CTREE_WRITES);
if (!root) {
fprintf(stderr, "Open ctree failed\n");
exit(1);
}
trans = btrfs_start_transaction(root, 1);
srand(128);
for (i = 0; i < run_size; i++) {
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(trans, root, &ins, buf, 512);
if (!ret)
tree_size++;
}
btrfs_commit_transaction(trans, root);
close_ctree(root);
root = open_ctree(av[1], BTRFS_SUPER_INFO_OFFSET, OPEN_CTREE_WRITES);
if (!root) {
fprintf(stderr, "Open ctree failed\n");
exit(1);
}
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(NULL, root, &ins, &path, 0, 0);
if (ret) {
btrfs_print_tree(root, root->node, 1);
printf("unable to find %d\n", num);
exit(1);
}
btrfs_release_path(&path);
}
printf("starting big long delete run\n");
trans = btrfs_start_transaction(root, 1);
while(root->node && btrfs_header_nritems(root->node) > 0) {
struct extent_buffer *leaf;
int slot;
ins.objectid = (u64)-1;
btrfs_init_path(&path);
ret = btrfs_search_slot(trans, root, &ins, &path, -1, 1);
if (ret == 0)
BUG();
leaf = path.nodes[0];
slot = path.slots[0];
if (slot != btrfs_header_nritems(leaf))
BUG();
while(path.slots[0] > 0) {
path.slots[0] -= 1;
slot = path.slots[0];
leaf = path.nodes[0];
btrfs_item_key_to_cpu(leaf, &last, slot);
if (tree_size % 10000 == 0)
printf("big del %d:%d\n", tree_size, i);
ret = btrfs_del_item(trans, root, &path);
if (ret != 0) {
printf("del_item returned %d\n", ret);
BUG();
}
tree_size--;
}
btrfs_release_path(&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(trans, root);
printf("tree size is now %d\n", tree_size);
printf("root %p commit root %p\n", root->node, root->commit_root);
btrfs_print_tree(root, root->node, 1);
close_ctree(root);
return 0;
}
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