1 /* this tests tdb by doing lots of ops from several simultaneous
2 writers - that stresses the locking code.
6 #include "system/time.h"
7 #include "system/wait.h"
8 #include "system/filesys.h"
16 #define REOPEN_PROB 30
20 #define TRANSACTION_PROB 10
21 #define TRANSACTION_PREPARE_PROB 2
22 #define LOCKSTORE_PROB 5
23 #define TRAVERSE_PROB 20
24 #define TRAVERSE_READ_PROB 20
29 static struct tdb_context *db;
30 static int in_transaction;
31 static int error_count;
32 static int always_transaction = 0;
33 static int hash_size = 2;
35 static int count_pipe;
36 static bool mutex = false;
37 static struct tdb_logging_context log_ctx;
39 #ifdef PRINTF_ATTRIBUTE
40 static void tdb_log(struct tdb_context *tdb, enum tdb_debug_level level, const char *format, ...) PRINTF_ATTRIBUTE(3,4);
42 static void tdb_log(struct tdb_context *tdb, enum tdb_debug_level level, const char *format, ...)
46 /* trace level messages do not indicate an error */
47 if (level != TDB_DEBUG_TRACE) {
52 vfprintf(stdout, format, ap);
56 if (level != TDB_DEBUG_TRACE) {
58 signal(SIGUSR1, SIG_IGN);
59 asprintf(&ptr,"xterm -e gdb /proc/%d/exe %d", getpid(), getpid());
66 static void fatal(const char *why)
72 static char *randbuf(int len)
76 buf = (char *)malloc(len+1);
79 buf[i] = 'a' + (rand() % 26);
85 static int cull_traverse(struct tdb_context *tdb, TDB_DATA key, TDB_DATA dbuf,
89 if (random() % CULL_PROB == 0) {
96 static void addrec_db(void)
102 klen = 1 + (rand() % KEYLEN);
103 dlen = 1 + (rand() % DATALEN);
108 key.dptr = (unsigned char *)k;
111 data.dptr = (unsigned char *)d;
115 if (in_transaction == 0 && random() % REOPEN_PROB == 0) {
122 if (in_transaction == 0 &&
123 ((tdb_get_flags(db) & TDB_MUTEX_LOCKING) == 0) &&
124 (always_transaction || random() % TRANSACTION_PROB == 0)) {
125 if (tdb_transaction_start(db) != 0) {
126 fatal("tdb_transaction_start failed");
131 if (in_transaction && random() % TRANSACTION_PROB == 0) {
132 if (random() % TRANSACTION_PREPARE_PROB == 0) {
133 if (tdb_transaction_prepare_commit(db) != 0) {
134 fatal("tdb_transaction_prepare_commit failed");
137 if (tdb_transaction_commit(db) != 0) {
138 fatal("tdb_transaction_commit failed");
143 if (in_transaction && random() % TRANSACTION_PROB == 0) {
144 if (tdb_transaction_cancel(db) != 0) {
145 fatal("tdb_transaction_cancel failed");
153 if (random() % DELETE_PROB == 0) {
160 if (random() % STORE_PROB == 0) {
161 if (tdb_store(db, key, data, TDB_REPLACE) != 0) {
162 fatal("tdb_store failed");
169 if (random() % APPEND_PROB == 0) {
170 if (tdb_append(db, key, data) != 0) {
171 fatal("tdb_append failed");
178 if (random() % LOCKSTORE_PROB == 0) {
179 tdb_chainlock(db, key);
180 data = tdb_fetch(db, key);
181 if (tdb_store(db, key, data, TDB_REPLACE) != 0) {
182 fatal("tdb_store failed");
184 if (data.dptr) free(data.dptr);
185 tdb_chainunlock(db, key);
191 if (random() % TRAVERSE_PROB == 0) {
192 tdb_traverse(db, cull_traverse, NULL);
197 #if TRAVERSE_READ_PROB
198 if (random() % TRAVERSE_READ_PROB == 0) {
199 tdb_traverse_read(db, NULL, NULL);
204 data = tdb_fetch(db, key);
205 if (data.dptr) free(data.dptr);
212 static int traverse_fn(struct tdb_context *tdb, TDB_DATA key, TDB_DATA dbuf,
215 tdb_delete(tdb, key);
219 static void usage(void)
221 printf("Usage: tdbtorture [-t] [-k] [-m] [-n NUM_PROCS] [-l NUM_LOOPS] [-s SEED] [-H HASH_SIZE]\n");
225 static void send_count_and_suicide(int sig)
227 /* This ensures our successor can continue where we left off. */
228 write(count_pipe, &loopnum, sizeof(loopnum));
229 /* This gives a unique signature. */
230 kill(getpid(), SIGUSR2);
233 static int run_child(const char *filename, int i, int seed, unsigned num_loops, unsigned start)
235 int tdb_flags = TDB_DEFAULT|TDB_CLEAR_IF_FIRST|TDB_INCOMPATIBLE_HASH;
238 tdb_flags |= TDB_MUTEX_LOCKING;
241 db = tdb_open_ex(filename, hash_size, tdb_flags,
242 O_RDWR | O_CREAT, 0600, &log_ctx, NULL);
244 fatal("db open failed");
250 /* Set global, then we're ready to handle being killed. */
252 signal(SIGUSR1, send_count_and_suicide);
254 for (;loopnum<num_loops && error_count == 0;loopnum++) {
258 if (error_count == 0) {
259 tdb_traverse_read(db, NULL, NULL);
260 if (always_transaction) {
261 while (in_transaction) {
262 tdb_transaction_cancel(db);
265 if (tdb_transaction_start(db) != 0)
266 fatal("tdb_transaction_start failed");
268 tdb_traverse(db, traverse_fn, NULL);
269 tdb_traverse(db, traverse_fn, NULL);
270 if (always_transaction) {
271 if (tdb_transaction_commit(db) != 0)
272 fatal("tdb_transaction_commit failed");
278 return (error_count < 100 ? error_count : 100);
281 static char *test_path(const char *filename)
283 const char *prefix = getenv("TEST_DATA_PREFIX");
289 ret = asprintf(&path, "%s/%s", prefix, filename);
296 return strdup(filename);
299 int main(int argc, char * const *argv)
302 int num_loops = 5000;
311 log_ctx.log_fn = tdb_log;
313 while ((c = getopt(argc, argv, "n:l:s:H:thkm")) != -1) {
316 num_procs = strtol(optarg, NULL, 0);
319 num_loops = strtol(optarg, NULL, 0);
322 hash_size = strtol(optarg, NULL, 0);
325 seed = strtol(optarg, NULL, 0);
328 always_transaction = 1;
334 mutex = tdb_runtime_check_for_robust_mutexes();
336 printf("tdb_runtime_check_for_robust_mutexes() returned false\n");
345 test_tdb = test_path("torture.tdb");
350 seed = (getpid() + time(NULL)) & 0x7FFFFFFF;
353 printf("Testing with %d processes, %d loops, %d hash_size, seed=%d%s\n",
354 num_procs, num_loops, hash_size, seed,
355 (always_transaction ? " (all within transactions)" : ""));
357 if (num_procs == 1 && !kill_random) {
358 /* Don't fork for this case, makes debugging easier. */
359 error_count = run_child(test_tdb, 0, seed, num_loops, 0);
363 pids = (pid_t *)calloc(sizeof(pid_t), num_procs);
365 perror("Unable to allocate memory for pids");
368 done = (int *)calloc(sizeof(int), num_procs);
370 perror("Unable to allocate memory for done");
374 if (pipe(pfds) != 0) {
375 perror("Creating pipe");
378 count_pipe = pfds[1];
380 for (i=0;i<num_procs;i++) {
381 if ((pids[i]=fork()) == 0) {
383 exit(run_child(test_tdb, i, seed, num_loops, 0));
391 if (error_count != 0) {
392 /* try and stop the test on any failure */
393 for (j=0;j<num_procs;j++) {
395 kill(pids[j], SIGTERM);
400 pid = waitpid(-1, &status, kill_random ? WNOHANG : 0);
404 /* Sleep for 1/10 second. */
407 select(0, NULL, NULL, NULL, &tv);
410 kill(pids[random() % num_procs], SIGUSR1);
415 perror("failed to wait for child\n");
419 for (j=0;j<num_procs;j++) {
420 if (pids[j] == pid) break;
422 if (j == num_procs) {
423 printf("unknown child %d exited!?\n", (int)pid);
426 if (WIFSIGNALED(status)) {
427 if (WTERMSIG(status) == SIGUSR2
428 || WTERMSIG(status) == SIGUSR1) {
429 /* SIGUSR2 means they wrote to pipe. */
430 if (WTERMSIG(status) == SIGUSR2) {
431 read(pfds[0], &done[j],
436 exit(run_child(test_tdb, j, seed,
437 num_loops, done[j]));
438 printf("Restarting child %i for %u-%u\n",
439 j, done[j], num_loops);
442 printf("child %d exited with signal %d\n",
443 (int)pid, WTERMSIG(status));
446 if (WEXITSTATUS(status) != 0) {
447 printf("child %d exited with status %d\n",
448 (int)pid, WEXITSTATUS(status));
452 memmove(&pids[j], &pids[j+1],
453 (num_procs - j - 1)*sizeof(pids[0]));
460 if (error_count == 0) {
461 int tdb_flags = TDB_DEFAULT;
464 tdb_flags |= TDB_NOLOCK;
467 db = tdb_open_ex(test_tdb, hash_size, tdb_flags,
468 O_RDWR, 0, &log_ctx, NULL);
470 fatal("db open failed\n");
473 if (tdb_check(db, NULL, NULL) == -1) {
474 printf("db check failed\n");