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