lib/tdb/tools/tdbtorture.c

   1 /* this tests tdb by doing lots of ops from several simultaneous
   2    writers - that stresses the locking code.
   3 */
   4
   5 #include "replace.h"
   6 #include "system/time.h"
   7 #include "system/wait.h"
   8 #include "system/filesys.h"
   9 #include "tdb.h"
  10
  11 #ifdef HAVE_GETOPT_H
  12 #include <getopt.h>
  13 #endif
  14
  15
  16 #define REOPEN_PROB 30
  17 #define DELETE_PROB 8
  18 #define STORE_PROB 4
  19 #define APPEND_PROB 6
  20 #define TRANSACTION_PROB 10
  21 #define LOCKSTORE_PROB 5
  22 #define TRAVERSE_PROB 20
  23 #define TRAVERSE_READ_PROB 20
  24 #define CULL_PROB 100
  25 #define KEYLEN 3
  26 #define DATALEN 100
  27
  28 static struct tdb_context *db;
  29 static int in_transaction;
  30 static int error_count;
  31 static int always_transaction = 0;
  32
  33 #ifdef PRINTF_ATTRIBUTE
  34 static void tdb_log(struct tdb_context *tdb, enum tdb_debug_level level, const char *format, ...) PRINTF_ATTRIBUTE(3,4);
  35 #endif
  36 static void tdb_log(struct tdb_context *tdb, enum tdb_debug_level level, const char *format, ...)
  37 {
  38         va_list ap;
  39
  40         /* trace level messages do not indicate an error */
  41         if (level != TDB_DEBUG_TRACE) {
  42                 error_count++;
  43         }
  44
  45         va_start(ap, format);
  46         vfprintf(stdout, format, ap);
  47         va_end(ap);
  48         fflush(stdout);
  49 #if 0
  50         {
  51                 char *ptr;
  52                 asprintf(&ptr,"xterm -e gdb /proc/%d/exe %d", getpid(), getpid());
  53                 system(ptr);
  54                 free(ptr);
  55         }
  56 #endif
  57 }
  58
  59 static void fatal(const char *why)
  60 {
  61         perror(why);
  62         error_count++;
  63 }
  64
  65 static char *randbuf(int len)
  66 {
  67         char *buf;
  68         int i;
  69         buf = (char *)malloc(len+1);
  70
  71         for (i=0;i<len;i++) {
  72                 buf[i] = 'a' + (rand() % 26);
  73         }
  74         buf[i] = 0;
  75         return buf;
  76 }
  77
  78 static int cull_traverse(struct tdb_context *tdb, TDB_DATA key, TDB_DATA dbuf,
  79                          void *state)
  80 {
  81 #if CULL_PROB
  82         if (random() % CULL_PROB == 0) {
  83                 tdb_delete(tdb, key);
  84         }
  85 #endif
  86         return 0;
  87 }
  88
  89 static void addrec_db(void)
  90 {
  91         int klen, dlen;
  92         char *k, *d;
  93         TDB_DATA key, data;
  94
  95         klen = 1 + (rand() % KEYLEN);
  96         dlen = 1 + (rand() % DATALEN);
  97
  98         k = randbuf(klen);
  99         d = randbuf(dlen);
 100
 101         key.dptr = (unsigned char *)k;
 102         key.dsize = klen+1;
 103
 104         data.dptr = (unsigned char *)d;
 105         data.dsize = dlen+1;
 106
 107 #if REOPEN_PROB
 108         if (in_transaction == 0 && random() % REOPEN_PROB == 0) {
 109                 tdb_reopen_all(0);
 110                 goto next;
 111         }
 112 #endif
 113
 114 #if TRANSACTION_PROB
 115         if (in_transaction == 0 &&
 116             (always_transaction || random() % TRANSACTION_PROB == 0)) {
 117                 if (tdb_transaction_start(db) != 0) {
 118                         fatal("tdb_transaction_start failed");
 119                 }
 120                 in_transaction++;
 121                 goto next;
 122         }
 123         if (in_transaction && random() % TRANSACTION_PROB == 0) {
 124                 if (tdb_transaction_commit(db) != 0) {
 125                         fatal("tdb_transaction_commit failed");
 126                 }
 127                 in_transaction--;
 128                 goto next;
 129         }
 130         if (in_transaction && random() % TRANSACTION_PROB == 0) {
 131                 if (tdb_transaction_cancel(db) != 0) {
 132                         fatal("tdb_transaction_cancel failed");
 133                 }
 134                 in_transaction--;
 135                 goto next;
 136         }
 137 #endif
 138
 139 #if DELETE_PROB
 140         if (random() % DELETE_PROB == 0) {
 141                 tdb_delete(db, key);
 142                 goto next;
 143         }
 144 #endif
 145
 146 #if STORE_PROB
 147         if (random() % STORE_PROB == 0) {
 148                 if (tdb_store(db, key, data, TDB_REPLACE) != 0) {
 149                         fatal("tdb_store failed");
 150                 }
 151                 goto next;
 152         }
 153 #endif
 154
 155 #if APPEND_PROB
 156         if (random() % APPEND_PROB == 0) {
 157                 if (tdb_append(db, key, data) != 0) {
 158                         fatal("tdb_append failed");
 159                 }
 160                 goto next;
 161         }
 162 #endif
 163
 164 #if LOCKSTORE_PROB
 165         if (random() % LOCKSTORE_PROB == 0) {
 166                 tdb_chainlock(db, key);
 167                 data = tdb_fetch(db, key);
 168                 if (tdb_store(db, key, data, TDB_REPLACE) != 0) {
 169                         fatal("tdb_store failed");
 170                 }
 171                 if (data.dptr) free(data.dptr);
 172                 tdb_chainunlock(db, key);
 173                 goto next;
 174         }
 175 #endif
 176
 177 #if TRAVERSE_PROB
 178         if (random() % TRAVERSE_PROB == 0) {
 179                 tdb_traverse(db, cull_traverse, NULL);
 180                 goto next;
 181         }
 182 #endif
 183
 184 #if TRAVERSE_READ_PROB
 185         if (random() % TRAVERSE_READ_PROB == 0) {
 186                 tdb_traverse_read(db, NULL, NULL);
 187                 goto next;
 188         }
 189 #endif
 190
 191         data = tdb_fetch(db, key);
 192         if (data.dptr) free(data.dptr);
 193
 194 next:
 195         free(k);
 196         free(d);
 197 }
 198
 199 static int traverse_fn(struct tdb_context *tdb, TDB_DATA key, TDB_DATA dbuf,
 200                        void *state)
 201 {
 202         tdb_delete(tdb, key);
 203         return 0;
 204 }
 205
 206 static void usage(void)
 207 {
 208         printf("Usage: tdbtorture [-t] [-n NUM_PROCS] [-l NUM_LOOPS] [-s SEED] [-H HASH_SIZE]\n");
 209         exit(0);
 210 }
 211
 212  int main(int argc, char * const *argv)
 213 {
 214         int i, seed = -1;
 215         int num_procs = 3;
 216         int num_loops = 5000;
 217         int hash_size = 2;
 218         int c;
 219         extern char *optarg;
 220         pid_t *pids;
 221
 222         struct tdb_logging_context log_ctx;
 223         log_ctx.log_fn = tdb_log;
 224
 225         while ((c = getopt(argc, argv, "n:l:s:H:th")) != -1) {
 226                 switch (c) {
 227                 case 'n':
 228                         num_procs = strtol(optarg, NULL, 0);
 229                         break;
 230                 case 'l':
 231                         num_loops = strtol(optarg, NULL, 0);
 232                         break;
 233                 case 'H':
 234                         hash_size = strtol(optarg, NULL, 0);
 235                         break;
 236                 case 's':
 237                         seed = strtol(optarg, NULL, 0);
 238                         break;
 239                 case 't':
 240                         always_transaction = 1;
 241                         break;
 242                 default:
 243                         usage();
 244                 }
 245         }
 246
 247         unlink("torture.tdb");
 248
 249         pids = (pid_t *)calloc(sizeof(pid_t), num_procs);
 250         pids[0] = getpid();
 251
 252         for (i=0;i<num_procs-1;i++) {
 253                 if ((pids[i+1]=fork()) == 0) break;
 254         }
 255
 256         db = tdb_open_ex("torture.tdb", hash_size, TDB_CLEAR_IF_FIRST,
 257                          O_RDWR | O_CREAT, 0600, &log_ctx, NULL);
 258         if (!db) {
 259                 fatal("db open failed");
 260         }
 261
 262         if (seed == -1) {
 263                 seed = (getpid() + time(NULL)) & 0x7FFFFFFF;
 264         }
 265
 266         if (i == 0) {
 267                 printf("testing with %d processes, %d loops, %d hash_size, seed=%d%s\n",
 268                        num_procs, num_loops, hash_size, seed, always_transaction ? " (all within transactions)" : "");
 269         }
 270
 271         srand(seed + i);
 272         srandom(seed + i);
 273
 274         for (i=0;i<num_loops && error_count == 0;i++) {
 275                 addrec_db();
 276         }
 277
 278         if (error_count == 0) {
 279                 tdb_traverse_read(db, NULL, NULL);
 280                 if (always_transaction) {
 281                         while (in_transaction) {
 282                                 tdb_transaction_cancel(db);
 283                                 in_transaction--;
 284                         }
 285                         if (tdb_transaction_start(db) != 0)
 286                                 fatal("tdb_transaction_start failed");
 287                 }
 288                 tdb_traverse(db, traverse_fn, NULL);
 289                 tdb_traverse(db, traverse_fn, NULL);
 290                 if (always_transaction) {
 291                         if (tdb_transaction_commit(db) != 0)
 292                                 fatal("tdb_transaction_commit failed");
 293                 }
 294         }
 295
 296         tdb_close(db);
 297
 298         if (getpid() != pids[0]) {
 299                 return error_count;
 300         }
 301
 302         for (i=1;i<num_procs;i++) {
 303                 int status, j;
 304                 pid_t pid;
 305                 if (error_count != 0) {
 306                         /* try and stop the test on any failure */
 307                         for (j=1;j<num_procs;j++) {
 308                                 if (pids[j] != 0) {
 309                                         kill(pids[j], SIGTERM);
 310                                 }
 311                         }
 312                 }
 313                 pid = waitpid(-1, &status, 0);
 314                 if (pid == -1) {
 315                         perror("failed to wait for child\n");
 316                         exit(1);
 317                 }
 318                 for (j=1;j<num_procs;j++) {
 319                         if (pids[j] == pid) break;
 320                 }
 321                 if (j == num_procs) {
 322                         printf("unknown child %d exited!?\n", (int)pid);
 323                         exit(1);
 324                 }
 325                 if (WEXITSTATUS(status) != 0) {
 326                         printf("child %d exited with status %d\n",
 327                                (int)pid, WEXITSTATUS(status));
 328                         error_count++;
 329                 }
 330                 pids[j] = 0;
 331         }
 332
 333         if (error_count == 0) {
 334                 printf("OK\n");
 335         }
 336
 337         return error_count;
 338 }