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