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-rw-r--r--tools/tdbtorture.c500
1 files changed, 500 insertions, 0 deletions
diff --git a/tools/tdbtorture.c b/tools/tdbtorture.c
new file mode 100644
index 0000000..1063f14
--- /dev/null
+++ b/tools/tdbtorture.c
@@ -0,0 +1,500 @@
+/* this tests tdb by doing lots of ops from several simultaneous
+ writers - that stresses the locking code.
+*/
+
+#include "replace.h"
+#include "system/time.h"
+#include "system/wait.h"
+#include "system/filesys.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 unsigned 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 bool do_transaction(void)
+{
+#if TRANSACTION_PROB
+ if (mutex) {
+ return false;
+ }
+ if (random() % TRANSACTION_PROB == 0) {
+ return true;
+ }
+#endif
+ return false;
+}
+
+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 (in_transaction == 0 &&
+ (always_transaction || do_transaction())) {
+ if (tdb_transaction_start(db) != 0) {
+ fatal("tdb_transaction_start failed");
+ }
+ in_transaction++;
+ goto next;
+ }
+ if (in_transaction && do_transaction()) {
+ 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 && do_transaction()) {
+ if (tdb_transaction_cancel(db) != 0) {
+ fatal("tdb_transaction_cancel failed");
+ }
+ in_transaction--;
+ goto next;
+ }
+
+#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++;
+ }
+ }
+ ARRAY_DEL_ELEMENT(pids, j, num_procs);
+ 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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