source4/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 #ifndef _SAMBA_BUILD_
   6 #define _GNU_SOURCE
   7 #include <stdlib.h>
   8 #include <time.h>
   9 #include <stdio.h>
  10 #include <fcntl.h>
  11 #include <unistd.h>
  12 #include <string.h>
  13 #include <fcntl.h>
  14 #include <signal.h>
  15 #include <stdarg.h>
  16 #include <sys/mman.h>
  17 #include <sys/stat.h>
  18 #include <sys/time.h>
  19 #include <sys/wait.h>
  20 #include "tdb.h"
  21
  22 #else
  23
  24 #include "includes.h"
  25 #include "lib/tdb/include/tdb.h"
  26 #include "system/time.h"
  27 #include "system/wait.h"
  28 #include "system/filesys.h"
  29
  30 #endif
  31
  32 #ifdef HAVE_GETOPT_H
  33 #include <getopt.h>
  34 #endif
  35
  36
  37 #define REOPEN_PROB 30
  38 #define DELETE_PROB 8
  39 #define STORE_PROB 4
  40 #define APPEND_PROB 6
  41 #define TRANSACTION_PROB 10
  42 #define LOCKSTORE_PROB 5
  43 #define TRAVERSE_PROB 20
  44 #define TRAVERSE_READ_PROB 20
  45 #define CULL_PROB 100
  46 #define KEYLEN 3
  47 #define DATALEN 100
  48
  49 static struct tdb_context *db;
  50 static int in_transaction;
  51 static int error_count;
  52
  53 #ifdef PRINTF_ATTRIBUTE
  54 static void tdb_log(struct tdb_context *tdb, enum tdb_debug_level level, const char *format, ...) PRINTF_ATTRIBUTE(3,4);
  55 #endif
  56 static void tdb_log(struct tdb_context *tdb, enum tdb_debug_level level, const char *format, ...)
  57 {
  58         va_list ap;
  59
  60         error_count++;
  61
  62         va_start(ap, format);
  63         vfprintf(stdout, format, ap);
  64         va_end(ap);
  65         fflush(stdout);
  66 #if 0
  67         {
  68                 char *ptr;
  69                 asprintf(&ptr,"xterm -e gdb /proc/%d/exe %d", getpid(), getpid());
  70                 system(ptr);
  71                 free(ptr);
  72         }
  73 #endif
  74 }
  75
  76 static void fatal(const char *why)
  77 {
  78         perror(why);
  79         error_count++;
  80 }
  81
  82 static char *randbuf(int len)
  83 {
  84         char *buf;
  85         int i;
  86         buf = (char *)malloc(len+1);
  87
  88         for (i=0;i<len;i++) {
  89                 buf[i] = 'a' + (rand() % 26);
  90         }
  91         buf[i] = 0;
  92         return buf;
  93 }
  94
  95 static int cull_traverse(struct tdb_context *tdb, TDB_DATA key, TDB_DATA dbuf,
  96                          void *state)
  97 {
  98 #if CULL_PROB
  99         if (random() % CULL_PROB == 0) {
 100                 tdb_delete(tdb, key);
 101         }
 102 #endif
 103         return 0;
 104 }
 105
 106 static void addrec_db(void)
 107 {
 108         int klen, dlen;
 109         char *k, *d;
 110         TDB_DATA key, data;
 111
 112         klen = 1 + (rand() % KEYLEN);
 113         dlen = 1 + (rand() % DATALEN);
 114
 115         k = randbuf(klen);
 116         d = randbuf(dlen);
 117
 118         key.dptr = (unsigned char *)k;
 119         key.dsize = klen+1;
 120
 121         data.dptr = (unsigned char *)d;
 122         data.dsize = dlen+1;
 123
 124 #if TRANSACTION_PROB
 125         if (in_transaction == 0 && random() % TRANSACTION_PROB == 0) {
 126                 if (tdb_transaction_start(db) != 0) {
 127                         fatal("tdb_transaction_start failed");
 128                 }
 129                 in_transaction++;
 130                 goto next;
 131         }
 132         if (in_transaction && random() % TRANSACTION_PROB == 0) {
 133                 if (tdb_transaction_commit(db) != 0) {
 134                         fatal("tdb_transaction_commit failed");
 135                 }
 136                 in_transaction--;
 137                 goto next;
 138         }
 139         if (in_transaction && random() % TRANSACTION_PROB == 0) {
 140                 if (tdb_transaction_cancel(db) != 0) {
 141                         fatal("tdb_transaction_cancel failed");
 142                 }
 143                 in_transaction--;
 144                 goto next;
 145         }
 146 #endif
 147
 148 #if REOPEN_PROB
 149         if (in_transaction == 0 && random() % REOPEN_PROB == 0) {
 150                 tdb_reopen_all(0);
 151                 goto next;
 152         }
 153 #endif
 154
 155 #if DELETE_PROB
 156         if (random() % DELETE_PROB == 0) {
 157                 tdb_delete(db, key);
 158                 goto next;
 159         }
 160 #endif
 161
 162 #if STORE_PROB
 163         if (random() % STORE_PROB == 0) {
 164                 if (tdb_store(db, key, data, TDB_REPLACE) != 0) {
 165                         fatal("tdb_store failed");
 166                 }
 167                 goto next;
 168         }
 169 #endif
 170
 171 #if APPEND_PROB
 172         if (random() % APPEND_PROB == 0) {
 173                 if (tdb_append(db, key, data) != 0) {
 174                         fatal("tdb_append failed");
 175                 }
 176                 goto next;
 177         }
 178 #endif
 179
 180 #if LOCKSTORE_PROB
 181         if (random() % LOCKSTORE_PROB == 0) {
 182                 tdb_chainlock(db, key);
 183                 data = tdb_fetch(db, key);
 184                 if (tdb_store(db, key, data, TDB_REPLACE) != 0) {
 185                         fatal("tdb_store failed");
 186                 }
 187                 if (data.dptr) free(data.dptr);
 188                 tdb_chainunlock(db, key);
 189                 goto next;
 190         }
 191 #endif
 192
 193 #if TRAVERSE_PROB
 194         if (random() % TRAVERSE_PROB == 0) {
 195                 tdb_traverse(db, cull_traverse, NULL);
 196                 goto next;
 197         }
 198 #endif
 199
 200 #if TRAVERSE_READ_PROB
 201         if (random() % TRAVERSE_READ_PROB == 0) {
 202                 tdb_traverse_read(db, NULL, NULL);
 203                 goto next;
 204         }
 205 #endif
 206
 207         data = tdb_fetch(db, key);
 208         if (data.dptr) free(data.dptr);
 209
 210 next:
 211         free(k);
 212         free(d);
 213 }
 214
 215 static int traverse_fn(struct tdb_context *tdb, TDB_DATA key, TDB_DATA dbuf,
 216                        void *state)
 217 {
 218         tdb_delete(tdb, key);
 219         return 0;
 220 }
 221
 222 static void usage(void)
 223 {
 224         printf("Usage: tdbtorture [-n NUM_PROCS] [-l NUM_LOOPS] [-s SEED] [-H HASH_SIZE]\n");
 225         exit(0);
 226 }
 227
 228  int main(int argc, char * const *argv)
 229 {
 230         int i, seed = -1;
 231         int num_procs = 3;
 232         int num_loops = 5000;
 233         int hash_size = 2;
 234         int c;
 235         extern char *optarg;
 236         pid_t *pids;
 237
 238         struct tdb_logging_context log_ctx;
 239         log_ctx.log_fn = tdb_log;
 240
 241         while ((c = getopt(argc, argv, "n:l:s:H:h")) != -1) {
 242                 switch (c) {
 243                 case 'n':
 244                         num_procs = strtol(optarg, NULL, 0);
 245                         break;
 246                 case 'l':
 247                         num_loops = strtol(optarg, NULL, 0);
 248                         break;
 249                 case 'H':
 250                         hash_size = strtol(optarg, NULL, 0);
 251                         break;
 252                 case 's':
 253                         seed = strtol(optarg, NULL, 0);
 254                         break;
 255                 default:
 256                         usage();
 257                 }
 258         }
 259
 260         unlink("torture.tdb");
 261
 262         pids = calloc(sizeof(pid_t), num_procs);
 263         pids[0] = getpid();
 264
 265         for (i=0;i<num_procs-1;i++) {
 266                 if ((pids[i+1]=fork()) == 0) break;
 267         }
 268
 269         db = tdb_open_ex("torture.tdb", hash_size, TDB_CLEAR_IF_FIRST,
 270                          O_RDWR | O_CREAT, 0600, &log_ctx, NULL);
 271         if (!db) {
 272                 fatal("db open failed");
 273         }
 274
 275         if (seed == -1) {
 276                 seed = (getpid() + time(NULL)) & 0x7FFFFFFF;
 277         }
 278
 279         if (i == 0) {
 280                 printf("testing with %d processes, %d loops, %d hash_size, seed=%d\n",
 281                        num_procs, num_loops, hash_size, seed);
 282         }
 283
 284         srand(seed + i);
 285         srandom(seed + i);
 286
 287         for (i=0;i<num_loops && error_count == 0;i++) {
 288                 addrec_db();
 289         }
 290
 291         if (error_count == 0) {
 292                 tdb_traverse_read(db, NULL, NULL);
 293                 tdb_traverse(db, traverse_fn, NULL);
 294                 tdb_traverse(db, traverse_fn, NULL);
 295         }
 296
 297         tdb_close(db);
 298
 299         if (getpid() != pids[0]) {
 300                 return error_count;
 301         }
 302
 303         for (i=1;i<num_procs;i++) {
 304                 int status, j;
 305                 pid_t pid;
 306                 if (error_count != 0) {
 307                         /* try and stop the test on any failure */
 308                         for (j=1;j<num_procs;j++) {
 309                                 if (pids[j] != 0) {
 310                                         kill(pids[j], SIGTERM);
 311                                 }
 312                         }
 313                 }
 314                 pid = waitpid(-1, &status, 0);
 315                 if (pid == -1) {
 316                         perror("failed to wait for child\n");
 317                         exit(1);
 318                 }
 319                 for (j=1;j<num_procs;j++) {
 320                         if (pids[j] == pid) break;
 321                 }
 322                 if (j == num_procs) {
 323                         printf("unknown child %d exited!?\n", (int)pid);
 324                         exit(1);
 325                 }
 326                 if (WEXITSTATUS(status) != 0) {
 327                         printf("child %d exited with status %d\n",
 328                                (int)pid, WEXITSTATUS(status));
 329                         error_count++;
 330                 }
 331                 pids[j] = 0;
 332         }
 333
 334         if (error_count == 0) {
 335                 printf("OK\n");
 336         }
 337
 338         return error_count;
 339 }