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/* this tests tdb by doing lots of ops from several simultaneous
writers - that stresses the locking code. Build with TDB_DEBUG=1
for best effect */
#ifdef STANDALONE
#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"
#endif
#define REOPEN_PROB 30
#define DELETE_PROB 8
#define STORE_PROB 4
#define APPEND_PROB 6
#define LOCKSTORE_PROB 0
#define TRAVERSE_PROB 20
#define CULL_PROB 100
#define KEYLEN 3
#define DATALEN 100
#define LOCKLEN 20
static TDB_CONTEXT *db;
#ifdef PRINTF_ATTRIBUTE
static void tdb_log(TDB_CONTEXT *tdb, int level, const char *format, ...) PRINTF_ATTRIBUTE(3,4);
#endif
static void tdb_log(TDB_CONTEXT *tdb, int level, const char *format, ...)
{
va_list ap;
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);
exit(1);
}
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(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf,
void *state)
{
if (random() % CULL_PROB == 0) {
tdb_delete(tdb, key);
}
return 0;
}
static void addrec_db(void)
{
int klen, dlen, slen;
char *k, *d, *s;
TDB_DATA key, data, lockkey;
klen = 1 + (rand() % KEYLEN);
dlen = 1 + (rand() % DATALEN);
slen = 1 + (rand() % LOCKLEN);
k = randbuf(klen);
d = randbuf(dlen);
s = randbuf(slen);
key.dptr = k;
key.dsize = klen+1;
data.dptr = d;
data.dsize = dlen+1;
lockkey.dptr = s;
lockkey.dsize = slen+1;
#if REOPEN_PROB
if (random() % REOPEN_PROB == 0) {
tdb_reopen_all();
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, lockkey);
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, lockkey);
goto next;
}
#endif
#if TRAVERSE_PROB
if (random() % TRAVERSE_PROB == 0) {
tdb_traverse(db, cull_traverse, NULL);
goto next;
}
#endif
data = tdb_fetch(db, key);
if (data.dptr) free(data.dptr);
next:
free(k);
free(d);
free(s);
}
static int traverse_fn(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf,
void *state)
{
tdb_delete(tdb, key);
return 0;
}
#ifndef NPROC
#define NPROC 6
#endif
#ifndef NLOOPS
#define NLOOPS 200000
#endif
int main(int argc, char *argv[])
{
int i, seed=0;
int loops = NLOOPS;
pid_t pids[NPROC];
pids[0] = getpid();
for (i=0;i<NPROC-1;i++) {
if ((pids[i+1]=fork()) == 0) break;
}
db = tdb_open("torture.tdb", 2, TDB_CLEAR_IF_FIRST,
O_RDWR | O_CREAT, 0600);
if (!db) {
fatal("db open failed");
}
tdb_logging_function(db, tdb_log);
srand(seed + getpid());
srandom(seed + getpid() + time(NULL));
for (i=0;i<loops;i++) addrec_db();
tdb_traverse(db, NULL, NULL);
tdb_traverse(db, traverse_fn, NULL);
tdb_traverse(db, traverse_fn, NULL);
tdb_close(db);
if (getpid() == pids[0]) {
for (i=0;i<NPROC-1;i++) {
int status;
if (waitpid(pids[i+1], &status, 0) != pids[i+1]) {
printf("failed to wait for %d\n",
(int)pids[i+1]);
exit(1);
}
if (WEXITSTATUS(status) != 0) {
printf("child %d exited with status %d\n",
(int)pids[i+1], WEXITSTATUS(status));
exit(1);
}
}
printf("OK\n");
}
return 0;
}
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