lib/tdb/test/run-no-lock-during-traverse.c

   1 #include "../common/tdb_private.h"
   2 #include "lock-tracking.h"
   3
   4 #define fcntl fcntl_with_lockcheck
   5
   6 #include "../common/io.c"
   7 #include "../common/tdb.c"
   8 #include "../common/lock.c"
   9 #include "../common/freelist.c"
  10 #include "../common/traverse.c"
  11 #include "../common/transaction.c"
  12 #include "../common/error.c"
  13 #include "../common/open.c"
  14 #include "../common/check.c"
  15 #include "../common/hash.c"
  16 #include "tap-interface.h"
  17 #include <stdlib.h>
  18 #include <err.h>
  19 #include "logging.h"
  20
  21 #undef fcntl
  22
  23 #define NUM_ENTRIES 10
  24
  25 static bool prepare_entries(struct tdb_context *tdb)
  26 {
  27         unsigned int i;
  28         TDB_DATA key, data;
  29
  30         for (i = 0; i < NUM_ENTRIES; i++) {
  31                 key.dsize = sizeof(i);
  32                 key.dptr = (void *)&i;
  33                 data.dsize = strlen("world");
  34                 data.dptr = (void *)"world";
  35
  36                 if (tdb_store(tdb, key, data, 0) != 0)
  37                         return false;
  38         }
  39         return true;
  40 }
  41
  42 static void delete_entries(struct tdb_context *tdb)
  43 {
  44         unsigned int i;
  45         TDB_DATA key;
  46
  47         for (i = 0; i < NUM_ENTRIES; i++) {
  48                 key.dsize = sizeof(i);
  49                 key.dptr = (void *)&i;
  50
  51                 ok1(tdb_delete(tdb, key) == 0);
  52         }
  53 }
  54
  55 /* We don't know how many times this will run. */
  56 static int delete_other(struct tdb_context *tdb, TDB_DATA key, TDB_DATA data,
  57                         void *private_data)
  58 {
  59         unsigned int i;
  60         memcpy(&i, key.dptr, 4);
  61         i = (i + 1) % NUM_ENTRIES;
  62         key.dptr = (void *)&i;
  63         if (tdb_delete(tdb, key) != 0)
  64                 (*(int *)private_data)++;
  65         return 0;
  66 }
  67
  68 static int delete_self(struct tdb_context *tdb, TDB_DATA key, TDB_DATA data,
  69                         void *private_data)
  70 {
  71         ok1(tdb_delete(tdb, key) == 0);
  72         return 0;
  73 }
  74
  75 int main(int argc, char *argv[])
  76 {
  77         struct tdb_context *tdb;
  78         int errors = 0;
  79
  80         plan_tests(41);
  81         tdb = tdb_open_ex("run-no-lock-during-traverse.tdb",
  82                           1024, TDB_CLEAR_IF_FIRST, O_CREAT|O_TRUNC|O_RDWR,
  83                           0600, &taplogctx, NULL);
  84
  85         ok1(tdb);
  86         ok1(prepare_entries(tdb));
  87         ok1(locking_errors == 0);
  88         ok1(tdb_lockall(tdb) == 0);
  89         ok1(locking_errors == 0);
  90         tdb_traverse(tdb, delete_other, &errors);
  91         ok1(errors == 0);
  92         ok1(locking_errors == 0);
  93         ok1(tdb_unlockall(tdb) == 0);
  94
  95         ok1(prepare_entries(tdb));
  96         ok1(locking_errors == 0);
  97         ok1(tdb_lockall(tdb) == 0);
  98         ok1(locking_errors == 0);
  99         tdb_traverse(tdb, delete_self, NULL);
 100         ok1(locking_errors == 0);
 101         ok1(tdb_unlockall(tdb) == 0);
 102
 103         ok1(prepare_entries(tdb));
 104         ok1(locking_errors == 0);
 105         ok1(tdb_lockall(tdb) == 0);
 106         ok1(locking_errors == 0);
 107         delete_entries(tdb);
 108         ok1(locking_errors == 0);
 109         ok1(tdb_unlockall(tdb) == 0);
 110
 111         ok1(tdb_close(tdb) == 0);
 112
 113         return exit_status();
 114 }