227 lines
6.0 KiB
C
227 lines
6.0 KiB
C
/*
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* Copyright (C) 2007 Oracle. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#include "kerncompat.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include "kernel-lib/radix-tree.h"
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#include "kernel-shared/ctree.h"
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#include "kernel-shared/disk-io.h"
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#include "kernel-shared/print-tree.h"
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#include "kernel-shared/transaction.h"
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/* for testing only */
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static int next_key(int i, int max_key) {
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return rand() % max_key;
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// return i;
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}
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int main(int ac, char **av) {
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struct btrfs_key ins;
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struct btrfs_key last = { (u64)-1, 0, 0};
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char *buf;
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int i;
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int num;
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int ret;
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int run_size = 300000;
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int max_key = 100000000;
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int tree_size = 2;
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struct btrfs_path path;
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struct btrfs_root *root;
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struct btrfs_trans_handle *trans;
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buf = calloc(1, 512);
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radix_tree_init();
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root = open_ctree(av[1], BTRFS_SUPER_INFO_OFFSET, OPEN_CTREE_WRITES);
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if (!root) {
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fprintf(stderr, "Open ctree failed\n");
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exit(1);
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}
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trans = btrfs_start_transaction(root, 1);
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BUG_ON(IS_ERR(trans));
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srand(55);
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ins.type = BTRFS_STRING_ITEM_KEY;
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for (i = 0; i < run_size; i++) {
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num = next_key(i, max_key);
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// num = i;
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sprintf(buf, "string-%d", num);
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if (i % 10000 == 0)
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fprintf(stderr, "insert %d:%d\n", num, i);
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ins.objectid = num;
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ins.offset = 0;
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ret = btrfs_insert_item(trans, root, &ins, buf, 512);
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if (!ret)
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tree_size++;
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if (i == run_size - 5) {
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btrfs_commit_transaction(trans, root);
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trans = btrfs_start_transaction(root, 1);
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BUG_ON(IS_ERR(trans));
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}
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}
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btrfs_commit_transaction(trans, root);
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close_ctree(root);
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exit(1);
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root = open_ctree(av[1], BTRFS_SUPER_INFO_OFFSET, OPEN_CTREE_WRITES);
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if (!root) {
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fprintf(stderr, "Open ctree failed\n");
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exit(1);
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}
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printf("starting search\n");
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srand(55);
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for (i = 0; i < run_size; i++) {
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num = next_key(i, max_key);
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ins.objectid = num;
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btrfs_init_path(&path);
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if (i % 10000 == 0)
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fprintf(stderr, "search %d:%d\n", num, i);
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ret = btrfs_search_slot(NULL, root, &ins, &path, 0, 0);
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if (ret) {
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btrfs_print_tree(root->node, 1, BTRFS_PRINT_TREE_BFS);
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printf("unable to find %d\n", num);
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exit(1);
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}
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btrfs_release_path(&path);
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}
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close_ctree(root);
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root = open_ctree(av[1], BTRFS_SUPER_INFO_OFFSET, OPEN_CTREE_WRITES);
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if (!root) {
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fprintf(stderr, "Open ctree failed\n");
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exit(1);
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}
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printf("node %p level %d total ptrs %u free spc %lu\n", root->node,
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btrfs_header_level(root->node),
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btrfs_header_nritems(root->node),
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(unsigned long)BTRFS_NODEPTRS_PER_BLOCK(root->fs_info) -
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btrfs_header_nritems(root->node));
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printf("all searches good, deleting some items\n");
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i = 0;
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srand(55);
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trans = btrfs_start_transaction(root, 1);
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BUG_ON(IS_ERR(trans));
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for (i = 0 ; i < run_size/4; i++) {
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num = next_key(i, max_key);
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ins.objectid = num;
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btrfs_init_path(&path);
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ret = btrfs_search_slot(trans, root, &ins, &path, -1, 1);
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if (!ret) {
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if (i % 10000 == 0)
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fprintf(stderr, "del %d:%d\n", num, i);
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ret = btrfs_del_item(trans, root, &path);
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if (ret != 0)
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BUG();
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tree_size--;
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}
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btrfs_release_path(&path);
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}
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btrfs_commit_transaction(trans, root);
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close_ctree(root);
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root = open_ctree(av[1], BTRFS_SUPER_INFO_OFFSET, OPEN_CTREE_WRITES);
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if (!root) {
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fprintf(stderr, "Open ctree failed\n");
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exit(1);
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}
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trans = btrfs_start_transaction(root, 1);
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BUG_ON(IS_ERR(trans));
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srand(128);
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for (i = 0; i < run_size; i++) {
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num = next_key(i, max_key);
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sprintf(buf, "string-%d", num);
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ins.objectid = num;
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if (i % 10000 == 0)
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fprintf(stderr, "insert %d:%d\n", num, i);
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ret = btrfs_insert_item(trans, root, &ins, buf, 512);
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if (!ret)
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tree_size++;
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}
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btrfs_commit_transaction(trans, root);
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close_ctree(root);
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root = open_ctree(av[1], BTRFS_SUPER_INFO_OFFSET, OPEN_CTREE_WRITES);
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if (!root) {
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fprintf(stderr, "Open ctree failed\n");
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exit(1);
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}
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srand(128);
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printf("starting search2\n");
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for (i = 0; i < run_size; i++) {
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num = next_key(i, max_key);
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ins.objectid = num;
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btrfs_init_path(&path);
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if (i % 10000 == 0)
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fprintf(stderr, "search %d:%d\n", num, i);
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ret = btrfs_search_slot(NULL, root, &ins, &path, 0, 0);
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if (ret) {
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btrfs_print_tree(root->node, 1, BTRFS_PRINT_TREE_BFS);
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printf("unable to find %d\n", num);
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exit(1);
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}
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btrfs_release_path(&path);
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}
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printf("starting big long delete run\n");
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trans = btrfs_start_transaction(root, 1);
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BUG_ON(IS_ERR(trans));
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while(root->node && btrfs_header_nritems(root->node) > 0) {
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struct extent_buffer *leaf;
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int slot;
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ins.objectid = (u64)-1;
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btrfs_init_path(&path);
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ret = btrfs_search_slot(trans, root, &ins, &path, -1, 1);
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if (ret == 0)
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BUG();
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leaf = path.nodes[0];
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slot = path.slots[0];
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if (slot != btrfs_header_nritems(leaf))
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BUG();
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while(path.slots[0] > 0) {
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path.slots[0] -= 1;
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slot = path.slots[0];
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leaf = path.nodes[0];
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btrfs_item_key_to_cpu(leaf, &last, slot);
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if (tree_size % 10000 == 0)
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printf("big del %d:%d\n", tree_size, i);
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ret = btrfs_del_item(trans, root, &path);
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if (ret != 0) {
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printf("del_item returned %d\n", ret);
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BUG();
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}
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tree_size--;
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}
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btrfs_release_path(&path);
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}
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/*
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printf("previous tree:\n");
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btrfs_print_tree(root, root->commit_root);
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printf("map before commit\n");
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btrfs_print_tree(root->extent_root, root->extent_root->node);
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*/
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btrfs_commit_transaction(trans, root);
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printf("tree size is now %d\n", tree_size);
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printf("root %p commit root %p\n", root->node, root->commit_root);
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btrfs_print_tree(root->node, 1, BTRFS_PRINT_TREE_BFS);
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close_ctree(root);
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return 0;
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}
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