blob: 3a07e6d1b8b59c0cf4af538bc3aaaeb8ab1bdfd9 [file] [log] [blame]
/*
* 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 <signal.h>
#include "kerncompat.h"
#include "radix-tree.h"
#include "ctree.h"
#include "disk-io.h"
#include "print-tree.h"
#include "transaction.h"
int keep_running = 1;
struct btrfs_super_block super;
static int setup_key(struct radix_tree_root *root, struct btrfs_key *key,
int exists)
{
int num = rand();
unsigned long res[2];
int ret;
key->flags = 0;
btrfs_set_key_type(key, BTRFS_STRING_ITEM_KEY);
key->offset = 0;
again:
ret = radix_tree_gang_lookup(root, (void **)res, num, 2);
if (exists) {
if (ret == 0)
return -1;
num = res[0];
} else if (ret != 0 && num == res[0]) {
num++;
if (ret > 1 && num == res[1]) {
num++;
goto again;
}
}
key->objectid = num;
return 0;
}
static int ins_one(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct radix_tree_root *radix)
{
struct btrfs_path path;
struct btrfs_key key;
int ret;
char buf[128];
unsigned long oid;
btrfs_init_path(&path);
ret = setup_key(radix, &key, 0);
sprintf(buf, "str-%llu\n", (unsigned long long)key.objectid);
ret = btrfs_insert_item(trans, root, &key, buf, strlen(buf));
if (ret)
goto error;
oid = (unsigned long)key.objectid;
radix_tree_preload(GFP_KERNEL);
ret = radix_tree_insert(radix, oid, (void *)oid);
radix_tree_preload_end();
if (ret)
goto error;
return ret;
error:
printf("failed to insert %llu\n", (unsigned long long)key.objectid);
return -1;
}
static int insert_dup(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct radix_tree_root *radix)
{
struct btrfs_path path;
struct btrfs_key key;
int ret;
char buf[128];
btrfs_init_path(&path);
ret = setup_key(radix, &key, 1);
if (ret < 0)
return 0;
sprintf(buf, "str-%llu\n", (unsigned long long)key.objectid);
ret = btrfs_insert_item(trans, root, &key, buf, strlen(buf));
if (ret != -EEXIST) {
printf("insert on %llu gave us %d\n",
(unsigned long long)key.objectid, ret);
return 1;
}
return 0;
}
static int del_one(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct radix_tree_root *radix)
{
struct btrfs_path path;
struct btrfs_key key;
int ret;
unsigned long *ptr;
btrfs_init_path(&path);
ret = setup_key(radix, &key, 1);
if (ret < 0)
return 0;
ret = btrfs_search_slot(trans, root, &key, &path, -1, 1);
if (ret)
goto error;
ret = btrfs_del_item(trans, root, &path);
btrfs_release_path(root, &path);
if (ret != 0)
goto error;
ptr = radix_tree_delete(radix, key.objectid);
if (!ptr)
goto error;
return 0;
error:
printf("failed to delete %llu\n", (unsigned long long)key.objectid);
return -1;
}
static int lookup_item(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct radix_tree_root *radix)
{
struct btrfs_path path;
struct btrfs_key key;
int ret;
btrfs_init_path(&path);
ret = setup_key(radix, &key, 1);
if (ret < 0)
return 0;
ret = btrfs_search_slot(trans, root, &key, &path, 0, 1);
btrfs_release_path(root, &path);
if (ret)
goto error;
return 0;
error:
printf("unable to find key %llu\n", (unsigned long long)key.objectid);
return -1;
}
static int lookup_enoent(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct radix_tree_root *radix)
{
struct btrfs_path path;
struct btrfs_key key;
int ret;
btrfs_init_path(&path);
ret = setup_key(radix, &key, 0);
if (ret < 0)
return ret;
ret = btrfs_search_slot(trans, root, &key, &path, 0, 0);
btrfs_release_path(root, &path);
if (ret <= 0)
goto error;
return 0;
error:
printf("able to find key that should not exist %llu\n",
(unsigned long long)key.objectid);
return -1;
}
static int empty_tree(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct radix_tree_root *radix, int nr)
{
struct btrfs_path path;
struct btrfs_key key;
unsigned long found = 0;
int ret;
int slot;
int *ptr;
int count = 0;
key.offset = 0;
key.flags = 0;
btrfs_set_key_type(&key, BTRFS_STRING_ITEM_KEY);
key.objectid = (unsigned long)-1;
while(nr-- >= 0) {
btrfs_init_path(&path);
ret = btrfs_search_slot(trans, root, &key, &path, -1, 1);
if (ret < 0) {
btrfs_release_path(root, &path);
return ret;
}
if (ret != 0) {
if (path.slots[0] == 0) {
btrfs_release_path(root, &path);
break;
}
path.slots[0] -= 1;
}
slot = path.slots[0];
found = btrfs_disk_key_objectid(
&path.nodes[0]->leaf.items[slot].key);
ret = btrfs_del_item(trans, root, &path);
count++;
if (ret) {
fprintf(stderr,
"failed to remove %lu from tree\n",
found);
return -1;
}
btrfs_release_path(root, &path);
ptr = radix_tree_delete(radix, found);
if (!ptr)
goto error;
if (!keep_running)
break;
}
return 0;
error:
fprintf(stderr, "failed to delete from the radix %lu\n", found);
return -1;
}
static int fill_tree(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct radix_tree_root *radix, int count)
{
int i;
int ret = 0;
for (i = 0; i < count; i++) {
ret = ins_one(trans, root, radix);
if (ret) {
fprintf(stderr, "fill failed\n");
goto out;
}
if (i % 1000 == 0) {
ret = btrfs_commit_transaction(trans, root, &super);
if (ret) {
fprintf(stderr, "fill commit failed\n");
return ret;
}
}
if (i && i % 10000 == 0) {
printf("bigfill %d\n", i);
}
if (!keep_running)
break;
}
out:
return ret;
}
static int bulk_op(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct radix_tree_root *radix)
{
int ret;
int nr = rand() % 5000;
static int run_nr = 0;
/* do the bulk op much less frequently */
if (run_nr++ % 100)
return 0;
ret = empty_tree(trans, root, radix, nr);
if (ret)
return ret;
ret = fill_tree(trans, root, radix, nr);
if (ret)
return ret;
return 0;
}
int (*ops[])(struct btrfs_trans_handle *,
struct btrfs_root *root, struct radix_tree_root *radix) =
{ ins_one, insert_dup, del_one, lookup_item,
lookup_enoent, bulk_op };
static int fill_radix(struct btrfs_root *root, struct radix_tree_root *radix)
{
struct btrfs_path path;
struct btrfs_key key;
unsigned long found = 0;
int ret;
int slot;
int i;
key.offset = 0;
key.flags = 0;
btrfs_set_key_type(&key, BTRFS_STRING_ITEM_KEY);
key.objectid = (unsigned long)-1;
while(1) {
btrfs_init_path(&path);
ret = btrfs_search_slot(NULL, root, &key, &path, 0, 0);
if (ret < 0) {
btrfs_release_path(root, &path);
return ret;
}
slot = path.slots[0];
if (ret != 0) {
if (slot == 0) {
btrfs_release_path(root, &path);
break;
}
slot -= 1;
}
for (i = slot; i >= 0; i--) {
found = btrfs_disk_key_objectid(&path.nodes[0]->
leaf.items[i].key);
radix_tree_preload(GFP_KERNEL);
ret = radix_tree_insert(radix, found, (void *)found);
if (ret) {
fprintf(stderr,
"failed to insert %lu into radix\n",
found);
exit(1);
}
radix_tree_preload_end();
}
btrfs_release_path(root, &path);
key.objectid = found - 1;
if (key.objectid > found)
break;
}
return 0;
}
void sigstopper(int ignored)
{
keep_running = 0;
fprintf(stderr, "caught exit signal, stopping\n");
}
int print_usage(void)
{
printf("usage: tester [-ih] [-c count] [-f count]\n");
printf("\t -c count -- iteration count after filling\n");
printf("\t -f count -- run this many random inserts before starting\n");
printf("\t -i -- only do initial fill\n");
printf("\t -h -- this help text\n");
exit(1);
}
int main(int ac, char **av)
{
RADIX_TREE(radix, GFP_KERNEL);
struct btrfs_root *root;
int i;
int ret;
int count;
int op;
int iterations = 20000;
int init_fill_count = 800000;
int err = 0;
int initial_only = 0;
struct btrfs_trans_handle *trans;
radix_tree_init();
root = open_ctree("dbfile", &super);
if (!root) {
fprintf(stderr, "Open ctree failed\n");
exit(1);
}
fill_radix(root, &radix);
signal(SIGTERM, sigstopper);
signal(SIGINT, sigstopper);
for (i = 1 ; i < ac ; i++) {
if (strcmp(av[i], "-i") == 0) {
initial_only = 1;
} else if (strcmp(av[i], "-c") == 0) {
iterations = atoi(av[i+1]);
i++;
} else if (strcmp(av[i], "-f") == 0) {
init_fill_count = atoi(av[i+1]);
i++;
} else {
print_usage();
}
}
printf("initial fill\n");
trans = btrfs_start_transaction(root, 1);
ret = fill_tree(trans, root, &radix, init_fill_count);
printf("starting run\n");
if (ret) {
err = ret;
goto out;
}
if (initial_only == 1) {
goto out;
}
for (i = 0; i < iterations; i++) {
op = rand() % ARRAY_SIZE(ops);
count = rand() % 128;
if (i % 2000 == 0) {
printf("%d\n", i);
fflush(stdout);
}
if (i && i % 5000 == 0) {
printf("open & close, root level %d nritems %d\n",
btrfs_header_level(&root->node->node.header),
btrfs_header_nritems(&root->node->node.header));
close_ctree(root, &super);
root = open_ctree("dbfile", &super);
if (!root) {
fprintf(stderr, "Open ctree failed\n");
goto out;
}
}
while(count--) {
ret = ops[op](trans, root, &radix);
if (ret) {
fprintf(stderr, "op %d failed %d:%d\n",
op, i, iterations);
btrfs_print_tree(root, root->node, 1);
fprintf(stderr, "op %d failed %d:%d\n",
op, i, iterations);
err = ret;
goto out;
}
if (ops[op] == bulk_op)
break;
if (keep_running == 0) {
err = 0;
goto out;
}
}
}
out:
close_ctree(root, &super);
return err;
}