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 <signal.h>
   9 #include <stdarg.h>
  10 #include <sys/mman.h>
  11 #include <sys/stat.h>
  12 #include <sys/time.h>
  13 #include <sys/wait.h>
  14 #include "tdb.h"
  15
  16 /* this tests tdb by doing lots of ops from several simultaneous
  17    writers - that stresses the locking code. Build with TDB_DEBUG=1
  18    for best effect */
  19
  20
  21
  22 #define REOPEN_PROB 30
  23 #define DELETE_PROB 8
  24 #define STORE_PROB 4
  25 #define APPEND_PROB 6
  26 #define LOCKSTORE_PROB 0
  27 #define TRAVERSE_PROB 20
  28 #define CULL_PROB 100
  29 #define KEYLEN 3
  30 #define DATALEN 100
  31 #define LOCKLEN 20
  32
  33 static TDB_CONTEXT *db;
  34
  35 static void tdb_log(TDB_CONTEXT *tdb, int level, const char *format, ...)
  36 {
  37         va_list ap;
  38
  39         va_start(ap, format);
  40         vfprintf(stdout, format, ap);
  41         va_end(ap);
  42         fflush(stdout);
  43 #if 0
  44         {
  45                 char *ptr;
  46                 asprintf(&ptr,"xterm -e gdb /proc/%d/exe %d", getpid(), getpid());
  47                 system(ptr);
  48                 free(ptr);
  49         }
  50 #endif
  51 }
  52
  53 static void fatal(char *why)
  54 {
  55         perror(why);
  56         exit(1);
  57 }
  58
  59 static char *randbuf(int len)
  60 {
  61         char *buf;
  62         int i;
  63         buf = (char *)malloc(len+1);
  64
  65         for (i=0;i<len;i++) {
  66                 buf[i] = 'a' + (rand() % 26);
  67         }
  68         buf[i] = 0;
  69         return buf;
  70 }
  71
  72 static int cull_traverse(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf,
  73                          void *state)
  74 {
  75         if (random() % CULL_PROB == 0) {
  76                 tdb_delete(tdb, key);
  77         }
  78         return 0;
  79 }
  80
  81 static void addrec_db(void)
  82 {
  83         int klen, dlen, slen;
  84         char *k, *d, *s;
  85         TDB_DATA key, data, lockkey;
  86
  87         klen = 1 + (rand() % KEYLEN);
  88         dlen = 1 + (rand() % DATALEN);
  89         slen = 1 + (rand() % LOCKLEN);
  90
  91         k = randbuf(klen);
  92         d = randbuf(dlen);
  93         s = randbuf(slen);
  94
  95         key.dptr = k;
  96         key.dsize = klen+1;
  97
  98         data.dptr = d;
  99         data.dsize = dlen+1;
 100
 101         lockkey.dptr = s;
 102         lockkey.dsize = slen+1;
 103
 104 #if REOPEN_PROB
 105         if (random() % REOPEN_PROB == 0) {
 106                 tdb_reopen_all();
 107                 goto next;
 108         }
 109 #endif
 110
 111 #if DELETE_PROB
 112         if (random() % DELETE_PROB == 0) {
 113                 tdb_delete(db, key);
 114                 goto next;
 115         }
 116 #endif
 117
 118 #if STORE_PROB
 119         if (random() % STORE_PROB == 0) {
 120                 if (tdb_store(db, key, data, TDB_REPLACE) != 0) {
 121                         fatal("tdb_store failed");
 122                 }
 123                 goto next;
 124         }
 125 #endif
 126
 127 #if APPEND_PROB
 128         if (random() % APPEND_PROB == 0) {
 129                 if (tdb_append(db, key, data) != 0) {
 130                         fatal("tdb_append failed");
 131                 }
 132                 goto next;
 133         }
 134 #endif
 135
 136 #if LOCKSTORE_PROB
 137         if (random() % LOCKSTORE_PROB == 0) {
 138                 tdb_chainlock(db, lockkey);
 139                 data = tdb_fetch(db, key);
 140                 if (tdb_store(db, key, data, TDB_REPLACE) != 0) {
 141                         fatal("tdb_store failed");
 142                 }
 143                 if (data.dptr) free(data.dptr);
 144                 tdb_chainunlock(db, lockkey);
 145                 goto next;
 146         }
 147 #endif
 148
 149 #if TRAVERSE_PROB
 150         if (random() % TRAVERSE_PROB == 0) {
 151                 tdb_traverse(db, cull_traverse, NULL);
 152                 goto next;
 153         }
 154 #endif
 155
 156         data = tdb_fetch(db, key);
 157         if (data.dptr) free(data.dptr);
 158
 159 next:
 160         free(k);
 161         free(d);
 162         free(s);
 163 }
 164
 165 static int traverse_fn(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf,
 166                        void *state)
 167 {
 168         tdb_delete(tdb, key);
 169         return 0;
 170 }
 171
 172 #ifndef NPROC
 173 #define NPROC 6
 174 #endif
 175
 176 #ifndef NLOOPS
 177 #define NLOOPS 200000
 178 #endif
 179
 180 int main(int argc, char *argv[])
 181 {
 182         int i, seed=0;
 183         int loops = NLOOPS;
 184         pid_t pids[NPROC];
 185
 186         pids[0] = getpid();
 187
 188         for (i=0;i<NPROC-1;i++) {
 189                 if ((pids[i+1]=fork()) == 0) break;
 190         }
 191
 192         db = tdb_open("torture.tdb", 2, TDB_CLEAR_IF_FIRST,
 193                       O_RDWR | O_CREAT, 0600);
 194         if (!db) {
 195                 fatal("db open failed");
 196         }
 197         tdb_logging_function(db, tdb_log);
 198
 199         srand(seed + getpid());
 200         srandom(seed + getpid() + time(NULL));
 201         for (i=0;i<loops;i++) addrec_db();
 202
 203         tdb_traverse(db, NULL, NULL);
 204         tdb_traverse(db, traverse_fn, NULL);
 205         tdb_traverse(db, traverse_fn, NULL);
 206
 207         tdb_close(db);
 208
 209         if (getpid() == pids[0]) {
 210                 for (i=0;i<NPROC-1;i++) {
 211                         int status;
 212                         if (waitpid(pids[i+1], &status, 0) != pids[i+1]) {
 213                                 printf("failed to wait for %d\n",
 214                                        (int)pids[i+1]);
 215                                 exit(1);
 216                         }
 217                         if (WEXITSTATUS(status) != 0) {
 218                                 printf("child %d exited with status %d\n",
 219                                        (int)pids[i+1], WEXITSTATUS(status));
 220                                 exit(1);
 221                         }
 222                 }
 223                 printf("OK\n");
 224         }
 225
 226         return 0;
 227 }