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 TRANSACTION_PREPARE_PROB 2
  22 #define LOCKSTORE_PROB 5
  23 #define TRAVERSE_PROB 20
  24 #define TRAVERSE_READ_PROB 20
  25 #define CULL_PROB 100
  26 #define KEYLEN 3
  27 #define DATALEN 100
  28
  29 static struct tdb_context *db;
  30 static int in_transaction;
  31 static int error_count;
  32 static int always_transaction = 0;
  33
  34 #ifdef PRINTF_ATTRIBUTE
  35 static void tdb_log(struct tdb_context *tdb, enum tdb_debug_level level, const char *format, ...) PRINTF_ATTRIBUTE(3,4);
  36 #endif
  37 static void tdb_log(struct tdb_context *tdb, enum tdb_debug_level level, const char *format, ...)
  38 {
  39         va_list ap;
  40
  41         /* trace level messages do not indicate an error */
  42         if (level != TDB_DEBUG_TRACE) {
  43                 error_count++;
  44         }
  45
  46         va_start(ap, format);
  47         vfprintf(stdout, format, ap);
  48         va_end(ap);
  49         fflush(stdout);
  50 #if 0
  51         {
  52                 char *ptr;
  53                 asprintf(&ptr,"xterm -e gdb /proc/%d/exe %d", getpid(), getpid());
  54                 system(ptr);
  55                 free(ptr);
  56         }
  57 #endif
  58 }
  59
  60 static void fatal(const char *why)
  61 {
  62         perror(why);
  63         error_count++;
  64 }
  65
  66 static char *randbuf(int len)
  67 {
  68         char *buf;
  69         int i;
  70         buf = (char *)malloc(len+1);
  71
  72         for (i=0;i<len;i++) {
  73                 buf[i] = 'a' + (rand() % 26);
  74         }
  75         buf[i] = 0;
  76         return buf;
  77 }
  78
  79 static int cull_traverse(struct tdb_context *tdb, TDB_DATA key, TDB_DATA dbuf,
  80                          void *state)
  81 {
  82 #if CULL_PROB
  83         if (random() % CULL_PROB == 0) {
  84                 tdb_delete(tdb, key);
  85         }
  86 #endif
  87         return 0;
  88 }
  89
  90 static void addrec_db(void)
  91 {
  92         int klen, dlen;
  93         char *k, *d;
  94         TDB_DATA key, data;
  95
  96         klen = 1 + (rand() % KEYLEN);
  97         dlen = 1 + (rand() % DATALEN);
  98
  99         k = randbuf(klen);
 100         d = randbuf(dlen);
 101
 102         key.dptr = (unsigned char *)k;
 103         key.dsize = klen+1;
 104
 105         data.dptr = (unsigned char *)d;
 106         data.dsize = dlen+1;
 107
 108 #if REOPEN_PROB
 109         if (in_transaction == 0 && random() % REOPEN_PROB == 0) {
 110                 tdb_reopen_all(0);
 111                 goto next;
 112         }
 113 #endif
 114
 115 #if TRANSACTION_PROB
 116         if (in_transaction == 0 &&
 117             (always_transaction || random() % TRANSACTION_PROB == 0)) {
 118                 if (tdb_transaction_start(db) != 0) {
 119                         fatal("tdb_transaction_start failed");
 120                 }
 121                 in_transaction++;
 122                 goto next;
 123         }
 124         if (in_transaction && random() % TRANSACTION_PROB == 0) {
 125                 if (random() % TRANSACTION_PREPARE_PROB == 0) {
 126                         if (tdb_transaction_prepare_commit(db) != 0) {
 127                                 fatal("tdb_transaction_prepare_commit failed");
 128                         }
 129                 }
 130                 if (tdb_transaction_commit(db) != 0) {
 131                         fatal("tdb_transaction_commit failed");
 132                 }
 133                 in_transaction--;
 134                 goto next;
 135         }
 136         if (in_transaction && random() % TRANSACTION_PROB == 0) {
 137                 if (tdb_transaction_cancel(db) != 0) {
 138                         fatal("tdb_transaction_cancel failed");
 139                 }
 140                 in_transaction--;
 141                 goto next;
 142         }
 143 #endif
 144
 145 #if DELETE_PROB
 146         if (random() % DELETE_PROB == 0) {
 147                 tdb_delete(db, key);
 148                 goto next;
 149         }
 150 #endif
 151
 152 #if STORE_PROB
 153         if (random() % STORE_PROB == 0) {
 154                 if (tdb_store(db, key, data, TDB_REPLACE) != 0) {
 155                         fatal("tdb_store failed");
 156                 }
 157                 goto next;
 158         }
 159 #endif
 160
 161 #if APPEND_PROB
 162         if (random() % APPEND_PROB == 0) {
 163                 if (tdb_append(db, key, data) != 0) {
 164                         fatal("tdb_append failed");
 165                 }
 166                 goto next;
 167         }
 168 #endif
 169
 170 #if LOCKSTORE_PROB
 171         if (random() % LOCKSTORE_PROB == 0) {
 172                 tdb_chainlock(db, key);
 173                 data = tdb_fetch(db, key);
 174                 if (tdb_store(db, key, data, TDB_REPLACE) != 0) {
 175                         fatal("tdb_store failed");
 176                 }
 177                 if (data.dptr) free(data.dptr);
 178                 tdb_chainunlock(db, key);
 179                 goto next;
 180         }
 181 #endif
 182
 183 #if TRAVERSE_PROB
 184         if (random() % TRAVERSE_PROB == 0) {
 185                 tdb_traverse(db, cull_traverse, NULL);
 186                 goto next;
 187         }
 188 #endif
 189
 190 #if TRAVERSE_READ_PROB
 191         if (random() % TRAVERSE_READ_PROB == 0) {
 192                 tdb_traverse_read(db, NULL, NULL);
 193                 goto next;
 194         }
 195 #endif
 196
 197         data = tdb_fetch(db, key);
 198         if (data.dptr) free(data.dptr);
 199
 200 next:
 201         free(k);
 202         free(d);
 203 }
 204
 205 static int traverse_fn(struct tdb_context *tdb, TDB_DATA key, TDB_DATA dbuf,
 206                        void *state)
 207 {
 208         tdb_delete(tdb, key);
 209         return 0;
 210 }
 211
 212 static void usage(void)
 213 {
 214         printf("Usage: tdbtorture [-t] [-n NUM_PROCS] [-l NUM_LOOPS] [-s SEED] [-H HASH_SIZE]\n");
 215         exit(0);
 216 }
 217
 218  int main(int argc, char * const *argv)
 219 {
 220         int i, seed = -1;
 221         int num_procs = 3;
 222         int num_loops = 5000;
 223         int hash_size = 2;
 224         int c;
 225         extern char *optarg;
 226         pid_t *pids;
 227
 228         struct tdb_logging_context log_ctx;
 229         log_ctx.log_fn = tdb_log;
 230
 231         while ((c = getopt(argc, argv, "n:l:s:H:th")) != -1) {
 232                 switch (c) {
 233                 case 'n':
 234                         num_procs = strtol(optarg, NULL, 0);
 235                         break;
 236                 case 'l':
 237                         num_loops = strtol(optarg, NULL, 0);
 238                         break;
 239                 case 'H':
 240                         hash_size = strtol(optarg, NULL, 0);
 241                         break;
 242                 case 's':
 243                         seed = strtol(optarg, NULL, 0);
 244                         break;
 245                 case 't':
 246                         always_transaction = 1;
 247                         break;
 248                 default:
 249                         usage();
 250                 }
 251         }
 252
 253         unlink("torture.tdb");
 254
 255         pids = (pid_t *)calloc(sizeof(pid_t), num_procs);
 256         pids[0] = getpid();
 257
 258         for (i=0;i<num_procs-1;i++) {
 259                 if ((pids[i+1]=fork()) == 0) break;
 260         }
 261
 262         db = tdb_open_ex("torture.tdb", hash_size, TDB_CLEAR_IF_FIRST,
 263                          O_RDWR | O_CREAT, 0600, &log_ctx, NULL);
 264         if (!db) {
 265                 fatal("db open failed");
 266         }
 267
 268         if (seed == -1) {
 269                 seed = (getpid() + time(NULL)) & 0x7FFFFFFF;
 270         }
 271
 272         if (i == 0) {
 273                 printf("testing with %d processes, %d loops, %d hash_size, seed=%d%s\n",
 274                        num_procs, num_loops, hash_size, seed, always_transaction ? " (all within transactions)" : "");
 275         }
 276
 277         srand(seed + i);
 278         srandom(seed + i);
 279
 280         for (i=0;i<num_loops && error_count == 0;i++) {
 281                 addrec_db();
 282         }
 283
 284         if (error_count == 0) {
 285                 tdb_traverse_read(db, NULL, NULL);
 286                 if (always_transaction) {
 287                         while (in_transaction) {
 288                                 tdb_transaction_cancel(db);
 289                                 in_transaction--;
 290                         }
 291                         if (tdb_transaction_start(db) != 0)
 292                                 fatal("tdb_transaction_start failed");
 293                 }
 294                 tdb_traverse(db, traverse_fn, NULL);
 295                 tdb_traverse(db, traverse_fn, NULL);
 296                 if (always_transaction) {
 297                         if (tdb_transaction_commit(db) != 0)
 298                                 fatal("tdb_transaction_commit failed");
 299                 }
 300         }
 301
 302         tdb_close(db);
 303
 304         if (getpid() != pids[0]) {
 305                 return error_count;
 306         }
 307
 308         for (i=1;i<num_procs;i++) {
 309                 int status, j;
 310                 pid_t pid;
 311                 if (error_count != 0) {
 312                         /* try and stop the test on any failure */
 313                         for (j=1;j<num_procs;j++) {
 314                                 if (pids[j] != 0) {
 315                                         kill(pids[j], SIGTERM);
 316                                 }
 317                         }
 318                 }
 319                 pid = waitpid(-1, &status, 0);
 320                 if (pid == -1) {
 321                         perror("failed to wait for child\n");
 322                         exit(1);
 323                 }
 324                 for (j=1;j<num_procs;j++) {
 325                         if (pids[j] == pid) break;
 326                 }
 327                 if (j == num_procs) {
 328                         printf("unknown child %d exited!?\n", (int)pid);
 329                         exit(1);
 330                 }
 331                 if (WEXITSTATUS(status) != 0) {
 332                         printf("child %d exited with status %d\n",
 333                                (int)pid, WEXITSTATUS(status));
 334                         error_count++;
 335                 }
 336                 pids[j] = 0;
 337         }
 338
 339         free(pids);
 340
 341         if (error_count == 0) {
 342                 printf("OK\n");
 343         }
 344
 345         return error_count;
 346 }