source/tdb/tdbtorture.c

   1 #include <stdlib.h>
   2 #include <time.h>
   3 #include <stdio.h>
   4 #include <fcntl.h>
   5 #include <unistd.h>
   6 #include <string.h>
   7 #include <fcntl.h>
   8 #include <stdarg.h>
   9 #include <sys/mman.h>
  10 #include <sys/stat.h>
  11 #include <sys/time.h>
  12 #include <sys/wait.h>
  13 #include "tdb.h"
  14
  15 /* this tests tdb by doing lots of ops from several simultaneous
  16    writers - that stresses the locking code. Build with TDB_DEBUG=1
  17    for best effect */
  18
  19
  20
  21 #define REOPEN_PROB 30
  22 #define DELETE_PROB 8
  23 #define STORE_PROB 4
  24 #define APPEND_PROB 6
  25 #define LOCKSTORE_PROB 0
  26 #define TRAVERSE_PROB 20
  27 #define CULL_PROB 100
  28 #define KEYLEN 3
  29 #define DATALEN 100
  30 #define LOCKLEN 20
  31
  32 static TDB_CONTEXT *db;
  33
  34 static void tdb_log(TDB_CONTEXT *tdb, int level, const char *format, ...)
  35 {
  36         va_list ap;
  37
  38         va_start(ap, format);
  39         vfprintf(stdout, format, ap);
  40         va_end(ap);
  41         fflush(stdout);
  42 #if 0
  43         {
  44                 char *ptr;
  45                 asprintf(&ptr,"xterm -e gdb /proc/%d/exe %d", getpid(), getpid());
  46                 system(ptr);
  47                 free(ptr);
  48         }
  49 #endif
  50 }
  51
  52 static void fatal(char *why)
  53 {
  54         perror(why);
  55         exit(1);
  56 }
  57
  58 static char *randbuf(int len)
  59 {
  60         char *buf;
  61         int i;
  62         buf = (char *)malloc(len+1);
  63
  64         for (i=0;i<len;i++) {
  65                 buf[i] = 'a' + (rand() % 26);
  66         }
  67         buf[i] = 0;
  68         return buf;
  69 }
  70
  71 static int cull_traverse(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf,
  72                          void *state)
  73 {
  74         if (random() % CULL_PROB == 0) {
  75                 tdb_delete(tdb, key);
  76         }
  77         return 0;
  78 }
  79
  80 static void addrec_db(void)
  81 {
  82         int klen, dlen, slen;
  83         char *k, *d, *s;
  84         TDB_DATA key, data, lockkey;
  85
  86         klen = 1 + (rand() % KEYLEN);
  87         dlen = 1 + (rand() % DATALEN);
  88         slen = 1 + (rand() % LOCKLEN);
  89
  90         k = randbuf(klen);
  91         d = randbuf(dlen);
  92         s = randbuf(slen);
  93
  94         key.dptr = k;
  95         key.dsize = klen+1;
  96
  97         data.dptr = d;
  98         data.dsize = dlen+1;
  99
 100         lockkey.dptr = s;
 101         lockkey.dsize = slen+1;
 102
 103 #if REOPEN_PROB
 104         if (random() % REOPEN_PROB == 0) {
 105                 tdb_reopen_all();
 106                 goto next;
 107         }
 108 #endif
 109
 110 #if DELETE_PROB
 111         if (random() % DELETE_PROB == 0) {
 112                 tdb_delete(db, key);
 113                 goto next;
 114         }
 115 #endif
 116
 117 #if STORE_PROB
 118         if (random() % STORE_PROB == 0) {
 119                 if (tdb_store(db, key, data, TDB_REPLACE) != 0) {
 120                         fatal("tdb_store failed");
 121                 }
 122                 goto next;
 123         }
 124 #endif
 125
 126 #if APPEND_PROB
 127         if (random() % APPEND_PROB == 0) {
 128                 if (tdb_append(db, key, data) != 0) {
 129                         fatal("tdb_append failed");
 130                 }
 131                 goto next;
 132         }
 133 #endif
 134
 135 #if LOCKSTORE_PROB
 136         if (random() % LOCKSTORE_PROB == 0) {
 137                 tdb_chainlock(db, lockkey);
 138                 data = tdb_fetch(db, key);
 139                 if (tdb_store(db, key, data, TDB_REPLACE) != 0) {
 140                         fatal("tdb_store failed");
 141                 }
 142                 if (data.dptr) free(data.dptr);
 143                 tdb_chainunlock(db, lockkey);
 144                 goto next;
 145         }
 146 #endif
 147
 148 #if TRAVERSE_PROB
 149         if (random() % TRAVERSE_PROB == 0) {
 150                 tdb_traverse(db, cull_traverse, NULL);
 151                 goto next;
 152         }
 153 #endif
 154
 155         data = tdb_fetch(db, key);
 156         if (data.dptr) free(data.dptr);
 157
 158 next:
 159         free(k);
 160         free(d);
 161         free(s);
 162 }
 163
 164 static int traverse_fn(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf,
 165                        void *state)
 166 {
 167         tdb_delete(tdb, key);
 168         return 0;
 169 }
 170
 171 #ifndef NPROC
 172 #define NPROC 6
 173 #endif
 174
 175 #ifndef NLOOPS
 176 #define NLOOPS 200000
 177 #endif
 178
 179 int main(int argc, char *argv[])
 180 {
 181         int i, seed=0;
 182         int loops = NLOOPS;
 183         pid_t pids[NPROC];
 184
 185         pids[0] = getpid();
 186
 187         for (i=0;i<NPROC-1;i++) {
 188                 if ((pids[i+1]=fork()) == 0) break;
 189         }
 190
 191         db = tdb_open("torture.tdb", 2, TDB_CLEAR_IF_FIRST,
 192                       O_RDWR | O_CREAT, 0600);
 193         if (!db) {
 194                 fatal("db open failed");
 195         }
 196         tdb_logging_function(db, tdb_log);
 197
 198         srand(seed + getpid());
 199         srandom(seed + getpid() + time(NULL));
 200         for (i=0;i<loops;i++) addrec_db();
 201
 202         tdb_traverse(db, NULL, NULL);
 203         tdb_traverse(db, traverse_fn, NULL);
 204         tdb_traverse(db, traverse_fn, NULL);
 205
 206         tdb_close(db);
 207
 208         if (getpid() == pids[0]) {
 209                 for (i=0;i<NPROC-1;i++) {
 210                         int status;
 211                         if (waitpid(pids[i+1], &status, 0) != pids[i+1]) {
 212                                 printf("failed to wait for %d\n",
 213                                        (int)pids[i+1]);
 214                                 exit(1);
 215                         }
 216                         if (WEXITSTATUS(status) != 0) {
 217                                 printf("child %d exited with status %d\n",
 218                                        (int)pids[i+1], WEXITSTATUS(status));
 219                                 exit(1);
 220                         }
 221                 }
 222                 printf("OK\n");
 223         }
 224
 225         return 0;
 226 }