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libtdb/tests/sanity/tdbtorture.c
Steeve Goveas 04be602881 Enable gating tests for libtdb 
Resolves: rhbz#1962774
2021-05-28 21:13:53 +05:30

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/* this tests tdb by doing lots of ops from several simultaneous
writers - that stresses the locking code.
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <signal.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <time.h>
#include <tdb.h>
#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 TRANSACTION_PREPARE_PROB 2
#define LOCKSTORE_PROB 5
#define TRAVERSE_PROB 20
#define TRAVERSE_READ_PROB 20
#define CULL_PROB 100
#define KEYLEN 3
#define DATALEN 100
static struct tdb_context *db;
static int in_transaction;
static int error_count;
static int always_transaction = 0;
static int hash_size = 2;
static int loopnum;
static int count_pipe;
static bool mutex = false;
static struct tdb_logging_context log_ctx;
#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;
/* trace level messages do not indicate an error */
if (level != TDB_DEBUG_TRACE) {
error_count++;
}
va_start(ap, format);
vfprintf(stdout, format, ap);
va_end(ap);
fflush(stdout);
#if 0
if (level != TDB_DEBUG_TRACE) {
char *ptr;
signal(SIGUSR1, SIG_IGN);
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 REOPEN_PROB
if (in_transaction == 0 && random() % REOPEN_PROB == 0) {
tdb_reopen_all(0);
goto next;
}
#endif
#if TRANSACTION_PROB
if (in_transaction == 0 &&
(always_transaction || 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 (random() % TRANSACTION_PREPARE_PROB == 0) {
if (tdb_transaction_prepare_commit(db) != 0) {
fatal("tdb_transaction_prepare_commit failed");
}
}
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 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 [-t] [-k] [-m] [-n NUM_PROCS] [-l NUM_LOOPS] [-s SEED] [-H HASH_SIZE]\n");
exit(0);
}
static void send_count_and_suicide(int sig)
{
ssize_t ret;
/* This ensures our successor can continue where we left off. */
do {
ret = write(count_pipe, &loopnum, sizeof(loopnum));
} while (ret == -1 && errno == EINTR);
/* This gives a unique signature. */
kill(getpid(), SIGUSR2);
}
static int run_child(const char *filename, int i, int seed, unsigned num_loops, unsigned start)
{
int tdb_flags = TDB_DEFAULT|TDB_CLEAR_IF_FIRST|TDB_INCOMPATIBLE_HASH;
if (mutex) {
tdb_flags |= TDB_MUTEX_LOCKING;
}
db = tdb_open_ex(filename, hash_size, tdb_flags,
O_RDWR | O_CREAT, 0600, &log_ctx, NULL);
if (!db) {
fatal("db open failed");
}
srand(seed + i);
srandom(seed + i);
/* Set global, then we're ready to handle being killed. */
loopnum = start;
signal(SIGUSR1, send_count_and_suicide);
for (;loopnum<num_loops && error_count == 0;loopnum++) {
addrec_db();
}
if (error_count == 0) {
tdb_traverse_read(db, NULL, NULL);
if (always_transaction) {
while (in_transaction) {
tdb_transaction_cancel(db);
in_transaction--;
}
if (tdb_transaction_start(db) != 0)
fatal("tdb_transaction_start failed");
}
tdb_traverse(db, traverse_fn, NULL);
tdb_traverse(db, traverse_fn, NULL);
if (always_transaction) {
if (tdb_transaction_commit(db) != 0)
fatal("tdb_transaction_commit failed");
}
}
tdb_close(db);
return (error_count < 100 ? error_count : 100);
}
static char *test_path(const char *filename)
{
const char *prefix = getenv("TEST_DATA_PREFIX");
if (prefix) {
char *path = NULL;
int ret;
ret = asprintf(&path, "%s/%s", prefix, filename);
if (ret == -1) {
return NULL;
}
return path;
}
return strdup(filename);
}
int main(int argc, char * const *argv)
{
int i, seed = -1;
int num_loops = 5000;
int num_procs = 3;
int c, pfds[2];
extern char *optarg;
pid_t *pids;
int kill_random = 0;
int *done;
char *test_tdb;
log_ctx.log_fn = tdb_log;
while ((c = getopt(argc, argv, "n:l:s:H:thkm")) != -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;
case 't':
always_transaction = 1;
break;
case 'k':
kill_random = 1;
break;
case 'm':
mutex = tdb_runtime_check_for_robust_mutexes();
if (!mutex) {
printf("tdb_runtime_check_for_robust_mutexes() returned false\n");
exit(1);
}
break;
default:
usage();
}
}
test_tdb = test_path("torture.tdb");
unlink(test_tdb);
if (seed == -1) {
seed = (getpid() + time(NULL)) & 0x7FFFFFFF;
}
printf("Testing with %d processes, %d loops, %d hash_size, seed=%d%s\n",
num_procs, num_loops, hash_size, seed,
(always_transaction ? " (all within transactions)" : ""));
if (num_procs == 1 && !kill_random) {
/* Don't fork for this case, makes debugging easier. */
error_count = run_child(test_tdb, 0, seed, num_loops, 0);
goto done;
}
pids = (pid_t *)calloc(sizeof(pid_t), num_procs);
if (pids == NULL) {
perror("Unable to allocate memory for pids");
exit(1);
}
done = (int *)calloc(sizeof(int), num_procs);
if (done == NULL) {
perror("Unable to allocate memory for done");
exit(1);
}
if (pipe(pfds) != 0) {
perror("Creating pipe");
exit(1);
}
count_pipe = pfds[1];
for (i=0;i<num_procs;i++) {
if ((pids[i]=fork()) == 0) {
close(pfds[0]);
exit(run_child(test_tdb, i, seed, num_loops, 0));
}
}
while (num_procs) {
int status, j;
pid_t pid;
if (error_count != 0) {
/* try and stop the test on any failure */
for (j=0;j<num_procs;j++) {
if (pids[j] != 0) {
kill(pids[j], SIGTERM);
}
}
}
pid = waitpid(-1, &status, kill_random ? WNOHANG : 0);
if (pid == 0) {
struct timeval tv;
/* Sleep for 1/10 second. */
tv.tv_sec = 0;
tv.tv_usec = 100000;
select(0, NULL, NULL, NULL, &tv);
/* Kill someone. */
kill(pids[random() % num_procs], SIGUSR1);
continue;
}
if (pid == -1) {
perror("failed to wait for child\n");
exit(1);
}
for (j=0;j<num_procs;j++) {
if (pids[j] == pid) break;
}
if (j == num_procs) {
printf("unknown child %d exited!?\n", (int)pid);
exit(1);
}
if (WIFSIGNALED(status)) {
if (WTERMSIG(status) == SIGUSR2
|| WTERMSIG(status) == SIGUSR1) {
/* SIGUSR2 means they wrote to pipe. */
if (WTERMSIG(status) == SIGUSR2) {
ssize_t ret;
do {
ret = read(pfds[0], &done[j],
sizeof(done[j]));
} while (ret == -1 && errno == EINTR);
}
pids[j] = fork();
if (pids[j] == 0)
exit(run_child(test_tdb, j, seed,
num_loops, done[j]));
printf("Restarting child %i for %u-%u\n",
j, done[j], num_loops);
continue;
}
printf("child %d exited with signal %d\n",
(int)pid, WTERMSIG(status));
error_count++;
} else {
if (WEXITSTATUS(status) != 0) {
printf("child %d exited with status %d\n",
(int)pid, WEXITSTATUS(status));
error_count++;
}
}
memmove(&pids[j], &pids[j+1],
(num_procs - j - 1)*sizeof(pids[0]));
num_procs--;
}
free(pids);
done:
if (error_count == 0) {
int tdb_flags = TDB_DEFAULT;
if (mutex) {
tdb_flags |= TDB_NOLOCK;
}
db = tdb_open_ex(test_tdb, hash_size, tdb_flags,
O_RDWR, 0, &log_ctx, NULL);
if (!db) {
fatal("db open failed\n");
exit(1);
}
if (tdb_check(db, NULL, NULL) == -1) {
printf("db check failed\n");
exit(1);
}
tdb_close(db);
printf("OK\n");
}
free(test_tdb);
return error_count;
}
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