source/tdb/tdbtorture.c

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