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|
/* this tests tdb by doing lots of ops from several simultaneous
writers - that stresses the locking code.
*/
#define _GNU_SOURCE
#ifndef _SAMBA_BUILD_
#include <stdlib.h>
#include <time.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <signal.h>
#include <stdarg.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/wait.h>
#include "tdb.h"
#else
#include "includes.h"
#include "lib/tdb/include/tdb.h"
#include "system/time.h"
#include "system/wait.h"
#include "system/filesys.h"
#endif
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#endif
#define REOPEN_PROB 30
#define DELETE_PROB 8
#define STORE_PROB 4
#define APPEND_PROB 6
#define TRANSACTION_PROB 10
#define LOCKSTORE_PROB 5
#define TRAVERSE_PROB 20
#define TRAVERSE_READ_PROB 20
#define CULL_PROB 100
#define KEYLEN 3
#define DATALEN 100
#define LOCKLEN 20
static struct tdb_context *db;
static int in_transaction;
static int error_count;
#ifdef PRINTF_ATTRIBUTE
static void tdb_log(struct tdb_context *tdb, enum tdb_debug_level level, const char *format, ...) PRINTF_ATTRIBUTE(3,4);
#endif
static void tdb_log(struct tdb_context *tdb, enum tdb_debug_level level, const char *format, ...)
{
va_list ap;
error_count++;
va_start(ap, format);
vfprintf(stdout, format, ap);
va_end(ap);
fflush(stdout);
#if 0
{
char *ptr;
asprintf(&ptr,"xterm -e gdb /proc/%d/exe %d", getpid(), getpid());
system(ptr);
free(ptr);
}
#endif
}
static void fatal(const char *why)
{
perror(why);
error_count++;
}
static char *randbuf(int len)
{
char *buf;
int i;
buf = (char *)malloc(len+1);
for (i=0;i<len;i++) {
buf[i] = 'a' + (rand() % 26);
}
buf[i] = 0;
return buf;
}
static int cull_traverse(struct tdb_context *tdb, TDB_DATA key, TDB_DATA dbuf,
void *state)
{
#if CULL_PROB
if (random() % CULL_PROB == 0) {
tdb_delete(tdb, key);
}
#endif
return 0;
}
static void addrec_db(void)
{
int klen, dlen;
char *k, *d;
TDB_DATA key, data;
klen = 1 + (rand() % KEYLEN);
dlen = 1 + (rand() % DATALEN);
k = randbuf(klen);
d = randbuf(dlen);
key.dptr = (unsigned char *)k;
key.dsize = klen+1;
data.dptr = (unsigned char *)d;
data.dsize = dlen+1;
#if TRANSACTION_PROB
if (in_transaction == 0 && random() % TRANSACTION_PROB == 0) {
if (tdb_transaction_start(db) != 0) {
fatal("tdb_transaction_start failed");
}
in_transaction++;
goto next;
}
if (in_transaction && random() % TRANSACTION_PROB == 0) {
if (tdb_transaction_commit(db) != 0) {
fatal("tdb_transaction_commit failed");
}
in_transaction--;
goto next;
}
if (in_transaction && random() % TRANSACTION_PROB == 0) {
if (tdb_transaction_cancel(db) != 0) {
fatal("tdb_transaction_cancel failed");
}
in_transaction--;
goto next;
}
#endif
#if REOPEN_PROB
if (in_transaction == 0 && random() % REOPEN_PROB == 0) {
tdb_reopen_all(0);
goto next;
}
#endif
#if DELETE_PROB
if (random() % DELETE_PROB == 0) {
tdb_delete(db, key);
goto next;
}
#endif
#if STORE_PROB
if (random() % STORE_PROB == 0) {
if (tdb_store(db, key, data, TDB_REPLACE) != 0) {
fatal("tdb_store failed");
}
goto next;
}
#endif
#if APPEND_PROB
if (random() % APPEND_PROB == 0) {
if (tdb_append(db, key, data) != 0) {
fatal("tdb_append failed");
}
goto next;
}
#endif
#if LOCKSTORE_PROB
if (random() % LOCKSTORE_PROB == 0) {
tdb_chainlock(db, key);
data = tdb_fetch(db, key);
if (tdb_store(db, key, data, TDB_REPLACE) != 0) {
fatal("tdb_store failed");
}
if (data.dptr) free(data.dptr);
tdb_chainunlock(db, key);
goto next;
}
#endif
#if TRAVERSE_PROB
if (random() % TRAVERSE_PROB == 0) {
tdb_traverse(db, cull_traverse, NULL);
goto next;
}
#endif
#if TRAVERSE_READ_PROB
if (random() % TRAVERSE_READ_PROB == 0) {
tdb_traverse_read(db, NULL, NULL);
goto next;
}
#endif
data = tdb_fetch(db, key);
if (data.dptr) free(data.dptr);
next:
free(k);
free(d);
}
static int traverse_fn(struct tdb_context *tdb, TDB_DATA key, TDB_DATA dbuf,
void *state)
{
tdb_delete(tdb, key);
return 0;
}
static void usage(void)
{
printf("Usage: tdbtorture [-n NUM_PROCS] [-l NUM_LOOPS] [-s SEED] [-H HASH_SIZE]\n");
exit(0);
}
int main(int argc, char * const *argv)
{
int i, seed = -1;
int num_procs = 3;
int num_loops = 5000;
int hash_size = 2;
int c;
extern char *optarg;
pid_t *pids;
while ((c = getopt(argc, argv, "n:l:s:H:h")) != -1) {
switch (c) {
case 'n':
num_procs = strtol(optarg, NULL, 0);
break;
case 'l':
num_loops = strtol(optarg, NULL, 0);
break;
case 'H':
hash_size = strtol(optarg, NULL, 0);
break;
case 's':
seed = strtol(optarg, NULL, 0);
break;
default:
usage();
}
}
unlink("torture.tdb");
pids = calloc(sizeof(pid_t), num_procs);
pids[0] = getpid();
for (i=0;i<num_procs-1;i++) {
if ((pids[i+1]=fork()) == 0) break;
}
db = tdb_open_ex("torture.tdb", hash_size, TDB_CLEAR_IF_FIRST,
O_RDWR | O_CREAT, 0600, tdb_log, NULL, NULL);
if (!db) {
fatal("db open failed");
}
if (seed == -1) {
seed = (getpid() + time(NULL)) & 0x7FFFFFFF;
}
if (i == 0) {
printf("testing with %d processes, %d loops, %d hash_size, seed=%d\n",
num_procs, num_loops, hash_size, seed);
}
srand(seed + i);
srandom(seed + i);
for (i=0;i<num_loops && error_count == 0;i++) {
addrec_db();
}
if (error_count == 0) {
tdb_traverse_read(db, NULL, NULL);
tdb_traverse(db, traverse_fn, NULL);
tdb_traverse(db, traverse_fn, NULL);
}
tdb_close(db);
if (getpid() != pids[0]) {
return error_count;
}
for (i=1;i<num_procs;i++) {
int status, j;
pid_t pid;
if (error_count != 0) {
/* try and stop the test on any failure */
for (j=1;j<num_procs;j++) {
if (pids[j] != 0) {
kill(pids[j], SIGTERM);
}
}
}
pid = waitpid(-1, &status, 0);
if (pid == -1) {
perror("failed to wait for child\n");
exit(1);
}
for (j=1;j<num_procs;j++) {
if (pids[j] == pid) break;
}
if (j == num_procs) {
printf("unknown child %d exited!?\n", (int)pid);
exit(1);
}
if (WEXITSTATUS(status) != 0) {
printf("child %d exited with status %d\n",
(int)pid, WEXITSTATUS(status));
error_count++;
}
pids[j] = 0;
}
if (error_count == 0) {
printf("OK\n");
}
return error_count;
}
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