?E(mdb_txn_begin(env, NULL, 0, &txn));
?E(mdb_dbi_open(txn, NULL, 0, &dbi));

?key.mv_size = sizeof(int);
?key.mv_data = sval;

?printf("Adding %d values\n", count);
?for (i = 0; i? sprintf(sval, "%03x %d foo bar", values[i], values[i]);
? /* Set in each iteration, since MDB_NOOVERWRITE may modify it */
? data.mv_size = sizeof(sval);
? data.mv_data = sval;
? if (RES(MDB_KEYEXIST, mdb_put(txn, dbi, &key, &data, MDB_NOOVERWRITE))) {
? ?j++;
? ?data.mv_size = sizeof(sval);
? ?data.mv_data = sval;
? }
?}
?if (j) printf("%d duplicates skipped\n", j);
?E(mdb_txn_commit(txn));
?E(mdb_env_stat(env, &mst));

?E(mdb_txn_begin(env, NULL, MDB_RDONLY, &txn));
?E(mdb_cursor_open(txn, dbi, &cursor));
?while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0) {
? printf("key: %p %.*s, data: %p %.*s\n",
? ?key.mv_data, (int)key.mv_size, (char *)key.mv_data,
? ?data.mv_data, (int)data.mv_size, (char *)data.mv_data);
?}
?CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get");
?mdb_cursor_close(cursor);
?mdb_txn_abort(txn);

?j = 0;
?key.mv_data = sval;
?for (i = count - 1; i > -1; i -= (rand() % 5)) {
? j++;
? txn = NULL;
? E(mdb_txn_begin(env, NULL, 0, &txn));
? sprintf(sval, "%03x ", values[i]);
? if (RES(MDB_NOTFOUND, mdb_del(txn, dbi, &key, NULL))) {
? ?j--;
? ?mdb_txn_abort(txn);
? }
? else {
? ?E(mdb_txn_commit(txn));
? }
?}
?free(values);
?printf("Deleted %d values\n", j);

?E(mdb_env_stat(env, &mst));
?E(mdb_txn_begin(env, NULL, MDB_RDONLY, &txn));
?E(mdb_cursor_open(txn, dbi, &cursor));
?printf("Cursor next\n");
?while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0) {
? printf("key: %.*s, data: %.*s\n",
? ?(int)key.mv_size, (char *)key.mv_data,
? ?(int)data.mv_size, (char *)data.mv_data);
?}
?CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get");
?printf("Cursor last\n");
?E(mdb_cursor_get(cursor, &key, &data, MDB_LAST));
?printf("key: %.*s, data: %.*s\n",
? (int)key.mv_size, (char *)key.mv_data,
? (int)data.mv_size, (char *)data.mv_data);
?printf("Cursor prev\n");
?while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_PREV)) == 0) {
? printf("key: %.*s, data: %.*s\n",
? ?(int)key.mv_size, (char *)key.mv_data,
? ?(int)data.mv_size, (char *)data.mv_data);
?}
?CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get");
?printf("Cursor last/prev\n");
?E(mdb_cursor_get(cursor, &key, &data, MDB_LAST));
?printf("key: %.*s, data: %.*s\n",
? (int)key.mv_size, (char *)key.mv_data,
? (int)data.mv_size, (char *)data.mv_data);
?E(mdb_cursor_get(cursor, &key, &data, MDB_PREV));
?printf("key: %.*s, data: %.*s\n",
? (int)key.mv_size, (char *)key.mv_data,
? (int)data.mv_size, (char *)data.mv_data);

?mdb_cursor_close(cursor);
?mdb_txn_abort(txn);

?printf("Deleting with cursor\n");
?E(mdb_txn_begin(env, NULL, 0, &txn));
?E(mdb_cursor_open(txn, dbi, &cur2));
?for (i = 0; i<50; i++) {
? if (RES(MDB_NOTFOUND, mdb_cursor_get(cur2, &key, &data, MDB_NEXT)))
? ?break;
? printf("key: %p %.*s, data: %p %.*s\n",
? ?key.mv_data, (int)key.mv_size, (char *)key.mv_data,
? ?data.mv_data, (int)data.mv_size, (char *)data.mv_data);
? E(mdb_del(txn, dbi, &key, NULL));
?}