--- /dev/null
+/* this tests ntdb by doing lots of ops from several simultaneous
+ writers - that stresses the locking code.
+*/
+
+#include "config.h"
+#include "ntdb.h"
+#include "private.h"
+#include <ccan/err/err.h>
+
+//#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_MOD_PROB 100
+#define TRAVERSE_ABORT_PROB 500
+#define CULL_PROB 100
+#define KEYLEN 3
+#define DATALEN 100
+
+static struct ntdb_context *db;
+static int in_transaction;
+static int in_traverse;
+static int error_count;
+#if TRANSACTION_PROB
+static int always_transaction = 0;
+#endif
+static int loopnum;
+static int count_pipe;
+static union ntdb_attribute log_attr;
+static union ntdb_attribute seed_attr;
+static union ntdb_attribute hsize_attr;
+
+static void ntdb_log(struct ntdb_context *ntdb,
+ enum ntdb_log_level level,
+ enum NTDB_ERROR ecode,
+ const char *message,
+ void *data)
+{
+ printf("ntdb:%s:%s:%s\n",
+ ntdb_name(ntdb), ntdb_errorstr(ecode), message);
+ fflush(stdout);
+#if 0
+ {
+ char str[200];
+ signal(SIGUSR1, SIG_IGN);
+ sprintf(str,"xterm -e gdb /proc/%u/exe %u", (unsigned int)getpid(), (unsigned int)getpid());
+ system(str);
+ }
+#endif
+}
+
+#include "../private.h"
+
+static void segv_handler(int sig, siginfo_t *info, void *p)
+{
+ char string[100];
+
+ sprintf(string, "%u: death at %p (map_ptr %p, map_size %zu)\n",
+ (unsigned int)getpid(), info->si_addr, db->file->map_ptr,
+ (size_t)db->file->map_size);
+ if (write(2, string, strlen(string)) > 0)
+ sleep(60);
+ _exit(11);
+}
+
+static void warn_on_err(enum NTDB_ERROR e, struct ntdb_context *ntdb,
+ const char *why)
+{
+ if (e != NTDB_SUCCESS) {
+ fprintf(stderr, "%u:%s:%s\n", (unsigned int)getpid(), why,
+ ntdb ? ntdb_errorstr(e) : "(no ntdb)");
+ error_count++;
+ }
+}
+
+static char *randbuf(int len)
+{
+ char *buf;
+ int i;
+ buf = (char *)malloc(len+1);
+ if (buf == NULL) {
+ perror("randbuf: unable to allocate memory for buffer.\n");
+ exit(1);
+ }
+
+ for (i=0;i<len;i++) {
+ buf[i] = 'a' + (rand() % 26);
+ }
+ buf[i] = 0;
+ return buf;
+}
+
+static void addrec_db(void);
+static int modify_traverse(struct ntdb_context *ntdb, NTDB_DATA key, NTDB_DATA dbuf,
+ void *state)
+{
+#if CULL_PROB
+ if (random() % CULL_PROB == 0) {
+ ntdb_delete(ntdb, key);
+ }
+#endif
+
+#if TRAVERSE_MOD_PROB
+ if (random() % TRAVERSE_MOD_PROB == 0) {
+ addrec_db();
+ }
+#endif
+
+#if TRAVERSE_ABORT_PROB
+ if (random() % TRAVERSE_ABORT_PROB == 0)
+ return 1;
+#endif
+
+ return 0;
+}
+
+static void addrec_db(void)
+{
+ int klen, dlen;
+ char *k, *d;
+ NTDB_DATA key, data;
+ enum NTDB_ERROR e;
+
+ 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_traverse == 0 && in_transaction == 0 && random() % REOPEN_PROB == 0) {
+ ntdb_reopen_all(0);
+ goto next;
+ }
+#endif
+
+#if TRANSACTION_PROB
+ if (in_traverse == 0 && in_transaction == 0 && (always_transaction || random() % TRANSACTION_PROB == 0)) {
+ e = ntdb_transaction_start(db);
+ warn_on_err(e, db, "ntdb_transaction_start failed");
+ in_transaction++;
+ goto next;
+ }
+ if (in_traverse == 0 && in_transaction && random() % TRANSACTION_PROB == 0) {
+ if (random() % TRANSACTION_PREPARE_PROB == 0) {
+ e = ntdb_transaction_prepare_commit(db);
+ warn_on_err(e, db, "ntdb_transaction_prepare_commit failed");
+ }
+ e = ntdb_transaction_commit(db);
+ warn_on_err(e, db, "ntdb_transaction_commit failed");
+ in_transaction--;
+ goto next;
+ }
+
+ if (in_traverse == 0 && in_transaction && random() % TRANSACTION_PROB == 0) {
+ ntdb_transaction_cancel(db);
+ in_transaction--;
+ goto next;
+ }
+#endif
+
+#if DELETE_PROB
+ if (random() % DELETE_PROB == 0) {
+ ntdb_delete(db, key);
+ goto next;
+ }
+#endif
+
+#if STORE_PROB
+ if (random() % STORE_PROB == 0) {
+ e = ntdb_store(db, key, data, NTDB_REPLACE);
+ warn_on_err(e, db, "ntdb_store failed");
+ goto next;
+ }
+#endif
+
+#if APPEND_PROB
+ if (random() % APPEND_PROB == 0) {
+ e = ntdb_append(db, key, data);
+ warn_on_err(e, db, "ntdb_append failed");
+ goto next;
+ }
+#endif
+
+#if LOCKSTORE_PROB
+ if (random() % LOCKSTORE_PROB == 0) {
+ ntdb_chainlock(db, key);
+ if (ntdb_fetch(db, key, &data) != NTDB_SUCCESS) {
+ data.dsize = 0;
+ data.dptr = NULL;
+ }
+ e = ntdb_store(db, key, data, NTDB_REPLACE);
+ warn_on_err(e, db, "ntdb_store failed");
+ if (data.dptr) free(data.dptr);
+ ntdb_chainunlock(db, key);
+ goto next;
+ }
+#endif
+
+#if TRAVERSE_PROB
+ /* FIXME: recursive traverses break transactions? */
+ if (in_traverse == 0 && random() % TRAVERSE_PROB == 0) {
+ in_traverse++;
+ ntdb_traverse(db, modify_traverse, NULL);
+ in_traverse--;
+ goto next;
+ }
+#endif
+
+ if (ntdb_fetch(db, key, &data) == NTDB_SUCCESS)
+ free(data.dptr);
+
+next:
+ free(k);
+ free(d);
+}
+
+static int traverse_fn(struct ntdb_context *ntdb, NTDB_DATA key, NTDB_DATA dbuf,
+ void *state)
+{
+ ntdb_delete(ntdb, key);
+ return 0;
+}
+
+static void usage(void)
+{
+ printf("Usage: ntdbtorture"
+#if TRANSACTION_PROB
+ " [-t]"
+#endif
+ " [-k] [-n NUM_PROCS] [-l NUM_LOOPS] [-s SEED] [-S] [-H HASH_SIZE]\n");
+ exit(0);
+}
+
+static void send_count_and_suicide(int sig)
+{
+ /* This ensures our successor can continue where we left off. */
+ if (write(count_pipe, &loopnum, sizeof(loopnum)) != sizeof(loopnum))
+ exit(2);
+ /* 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 ntdb_flags)
+{
+ struct sigaction act = { .sa_sigaction = segv_handler,
+ .sa_flags = SA_SIGINFO };
+ sigaction(11, &act, NULL);
+
+ db = ntdb_open(filename, ntdb_flags, O_RDWR | O_CREAT, 0600,
+ &log_attr);
+ if (!db) {
+ fprintf(stderr, "%u:%s:%s\n", (unsigned int)getpid(), filename,
+ "db open failed");
+ exit(1);
+ }
+
+#if 0
+ if (i == 0) {
+ printf("pid %u\n", (unsigned int)getpid());
+ sleep(9);
+ } else
+ sleep(10);
+#endif
+
+ 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) {
+ enum NTDB_ERROR e;
+
+ ntdb_traverse(db, NULL, NULL);
+#if TRANSACTION_PROB
+ if (always_transaction) {
+ while (in_transaction) {
+ ntdb_transaction_cancel(db);
+ in_transaction--;
+ }
+ e = ntdb_transaction_start(db);
+ if (e) {
+ warn_on_err(e, db,
+ "ntdb_transaction_start failed");
+ exit(1);
+ }
+ }
+#endif
+ ntdb_traverse(db, traverse_fn, NULL);
+ ntdb_traverse(db, traverse_fn, NULL);
+
+#if TRANSACTION_PROB
+ if (always_transaction) {
+ e = ntdb_transaction_commit(db);
+ warn_on_err(e, db, "ntdb_transaction_commit failed");
+ }
+#endif
+ }
+
+ ntdb_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;
+ int ntdb_flags = NTDB_DEFAULT;
+ char *test_ntdb;
+ enum NTDB_ERROR e;
+
+ log_attr.base.attr = NTDB_ATTRIBUTE_LOG;
+ log_attr.base.next = &seed_attr;
+ log_attr.log.fn = ntdb_log;
+ seed_attr.base.attr = NTDB_ATTRIBUTE_SEED;
+ seed_attr.base.next = &hsize_attr;
+ hsize_attr.base.attr = NTDB_ATTRIBUTE_HASHSIZE;
+ hsize_attr.base.next = NULL;
+ hsize_attr.hashsize.size = 2; /* stress it by default. */
+
+ while ((c = getopt(argc, argv, "n:l:s:thkSH:")) != -1) {
+ switch (c) {
+ case 'n':
+ num_procs = strtol(optarg, NULL, 0);
+ break;
+ case 'l':
+ num_loops = strtol(optarg, NULL, 0);
+ break;
+ case 's':
+ seed = strtol(optarg, NULL, 0);
+ break;
+ case 'S':
+ ntdb_flags = NTDB_NOSYNC;
+ break;
+ case 't':
+#if TRANSACTION_PROB
+ always_transaction = 1;
+#else
+ fprintf(stderr, "Transactions not supported\n");
+ usage();
+#endif
+ break;
+ case 'k':
+ kill_random = 1;
+ break;
+ case 'H':
+ hsize_attr.hashsize.size = strtol(optarg, NULL, 0);
+ break;
+ default:
+ usage();
+ }
+ }
+
+ test_ntdb = test_path("torture.ntdb");
+
+ unlink(test_ntdb);
+
+ if (seed == -1) {
+ seed = (getpid() + time(NULL)) & 0x7FFFFFFF;
+ }
+ seed_attr.seed.seed = (((uint64_t)seed) << 32) | seed;
+
+ if (num_procs == 1 && !kill_random) {
+ /* Don't fork for this case, makes debugging easier. */
+ error_count = run_child(test_ntdb, 0, seed, num_loops, 0,
+ ntdb_flags);
+ goto done;
+ }
+
+ pids = (pid_t *)calloc(sizeof(pid_t), num_procs);
+ done = (int *)calloc(sizeof(int), num_procs);
+
+ 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]);
+ if (i == 0) {
+ printf("testing with %d processes, %d loops, seed=%d%s\n",
+ num_procs, num_loops, seed,
+#if TRANSACTION_PROB
+ always_transaction ? " (all within transactions)" : ""
+#else
+ ""
+#endif
+ );
+ }
+ exit(run_child(test_ntdb, i, seed, num_loops, 0,
+ ntdb_flags));
+ }
+ }
+
+ 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 timespec ts;
+
+ /* Sleep for 1/10 second. */
+ ts.tv_sec = 0;
+ ts.tv_nsec = 100000000;
+ nanosleep(&ts, NULL);
+
+ /* 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) {
+ if (read(pfds[0], &done[j],
+ sizeof(done[j]))
+ != sizeof(done[j]))
+ err(1,
+ "Short read from child?");
+ }
+ pids[j] = fork();
+ if (pids[j] == 0)
+ exit(run_child(test_ntdb, j, seed,
+ num_loops, done[j],
+ ntdb_flags));
+ 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) {
+ db = ntdb_open(test_ntdb, NTDB_DEFAULT, O_RDWR | O_CREAT,
+ 0600, &log_attr);
+ if (!db) {
+ fprintf(stderr, "%u:%s:%s\n", (unsigned int)getpid(), test_ntdb,
+ "db open failed");
+ exit(1);
+ }
+ e = ntdb_check(db, NULL, NULL);
+ if (e) {
+ warn_on_err(e, db, "db check failed");
+ exit(1);
+ }
+ ntdb_close(db);
+ printf("OK\n");
+ }
+
+ free(test_ntdb);
+ return error_count;
+}
projects / ccan / blobdiff