+++ /dev/null
-/* this tests tdb by doing lots of ops from several simultaneous
- writers - that stresses the locking code.
-*/
-
-#include <ccan/tdb/tdb.h>
-#include <stdlib.h>
-#include <err.h>
-#include <getopt.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <fcntl.h>
-#include <time.h>
-#include <sys/wait.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_READ_PROB 20
-#define TRAVERSE_MOD_PROB 100
-#define TRAVERSE_ABORT_PROB 500
-#define CULL_PROB 100
-#define KEYLEN 3
-#define DATALEN 100
-
-static struct tdb_context *db;
-static int in_transaction;
-static int in_traverse;
-static int error_count;
-static int always_transaction = 0;
-static int hash_size = 2;
-static int loopnum;
-static int count_pipe;
-static struct tdb_logging_context log_ctx;
-
-#ifdef PRINTF_FMT
-static void tdb_log(struct tdb_context *tdb, enum tdb_debug_level level, const char *format, ...) PRINTF_FMT(3,4);
-#endif
-static void tdb_log(struct tdb_context *tdb, enum tdb_debug_level level, const char *format, ...)
-{
- va_list ap;
-
- 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 void addrec_db(void);
-static int modify_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
-
-#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;
- 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_traverse == 0 && in_transaction == 0 && random() % REOPEN_PROB == 0) {
- tdb_reopen_all(0);
- goto next;
- }
-#endif
-
-#if TRANSACTION_PROB
- if (in_traverse == 0 && 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_traverse == 0 && 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_traverse == 0 && 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
- /* FIXME: recursive traverses break transactions? */
- if (in_traverse == 0 && random() % TRAVERSE_PROB == 0) {
- in_traverse++;
- tdb_traverse(db, modify_traverse, NULL);
- in_traverse--;
- goto next;
- }
-#endif
-
-#if TRAVERSE_READ_PROB
- if (in_traverse == 0 && random() % TRAVERSE_READ_PROB == 0) {
- in_traverse++;
- tdb_traverse_read(db, NULL, NULL);
- in_traverse--;
- 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] [-n NUM_PROCS] [-l NUM_LOOPS] [-s SEED] [-H HASH_SIZE]\n");
- exit(0);
-}
-
-static void send_count_and_suicide(int sig)
-{
- /* This ensures our successor can continue where we left off. */
- write(count_pipe, &loopnum, sizeof(loopnum));
- /* This gives a unique signature. */
- kill(getpid(), SIGUSR2);
-}
-
-static int run_child(int i, int seed, unsigned num_loops, unsigned start)
-{
- db = tdb_open_ex("torture.tdb", hash_size, TDB_DEFAULT,
- 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);
-}
-
-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;
-
- log_ctx.log_fn = tdb_log;
-
- while ((c = getopt(argc, argv, "n:l:s:H:thk")) != -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;
- default:
- usage();
- }
- }
-
- unlink("torture.tdb");
-
- if (seed == -1) {
- seed = (getpid() + time(NULL)) & 0x7FFFFFFF;
- }
-
- if (num_procs == 1 && !kill_random) {
- /* Don't fork for this case, makes debugging easier. */
- error_count = run_child(0, seed, num_loops, 0);
- 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, %d hash_size, seed=%d%s\n",
- num_procs, num_loops, hash_size, seed, always_transaction ? " (all within transactions)" : "");
- }
- exit(run_child(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 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) {
- read(pfds[0], &done[j],
- sizeof(done[j]));
- }
- pids[j] = fork();
- if (pids[j] == 0)
- exit(run_child(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) {
- db = tdb_open_ex("torture.tdb", hash_size, TDB_DEFAULT,
- O_RDWR, 0, &log_ctx, NULL);
- if (!db) {
- fatal("db open failed");
- }
- if (tdb_check(db, NULL, NULL) == -1) {
- printf("db check failed");
- exit(1);
- }
- tdb_close(db);
- printf("OK\n");
- }
-
- return error_count;
-}
projects / ccan / blobdiff