1 /* mtest6.c - memory-mapped database tester/toy */
3 * Copyright 2011 Howard Chu, Symas Corp.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted only as authorized by the OpenLDAP
10 * A copy of this license is available in the file LICENSE in the
11 * top-level directory of the distribution or, alternatively, at
12 * <http://www.OpenLDAP.org/license.html>.
15 /* Tests for DB splits and merges */
16 #define _XOPEN_SOURCE 500 /* srandom(), random() */
25 int main(int argc,char * argv[])
41 rc = mdb_env_create(&env);
42 rc = mdb_env_set_mapsize(env, 10485760);
43 rc = mdb_env_set_maxdbs(env, 4);
44 rc = mdb_env_open(env, "./testdb", MDB_FIXEDMAP|MDB_NOSYNC, 0664);
45 rc = mdb_txn_begin(env, NULL, 0, &txn);
46 rc = mdb_open(txn, "id2", MDB_CREATE|MDB_INTEGERKEY, &dbi);
47 rc = mdb_cursor_open(txn, dbi, &cursor);
48 rc = mdb_stat(txn, dbi, &mst);
50 sval = calloc(1, mst.ms_psize / 4);
51 key.mv_size = sizeof(long);
53 data.mv_size = mst.ms_psize / 4 - 30;
56 printf("Adding 12 values, should yield 3 splits\n");
59 sprintf(sval, "%08x", kval);
60 rc = mdb_cursor_put(cursor, &key, &data, MDB_NOOVERWRITE);
62 printf("Adding 12 more values, should yield 3 splits\n");
65 sprintf(sval, "%08x", kval);
66 rc = mdb_cursor_put(cursor, &key, &data, MDB_NOOVERWRITE);
68 printf("Adding 12 more values, should yield 3 splits\n");
71 sprintf(sval, "%08x", kval);
72 rc = mdb_cursor_put(cursor, &key, &data, MDB_NOOVERWRITE);
74 rc = mdb_cursor_get(cursor, &key, &data, MDB_FIRST);
77 printf("key: %p %s, data: %p %.*s\n",
78 key.mv_data, mdb_dkey(&key, dkbuf),
79 data.mv_data, (int) data.mv_size, (char *) data.mv_data);
80 } while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0);
81 mdb_cursor_close(cursor);
87 for (i= count - 1; i > -1; i-= (random()%5)) {
90 rc = mdb_txn_begin(env, NULL, 0, &txn);
91 sprintf(kval, "%03x", values[i & ~0x0f]);
92 sprintf(sval, "%03x %d foo bar", values[i], values[i]);
93 key.mv_size = sizeof(int);
95 data.mv_size = sizeof(sval);
97 rc = mdb_del(txn, dbi, &key, &data);
102 rc = mdb_txn_commit(txn);
106 printf("Deleted %d values\n", j);
108 rc = mdb_env_stat(env, &mst);
109 rc = mdb_txn_begin(env, NULL, 1, &txn);
110 rc = mdb_cursor_open(txn, dbi, &cursor);
111 printf("Cursor next\n");
112 while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0) {
113 printf("key: %.*s, data: %.*s\n",
114 (int) key.mv_size, (char *) key.mv_data,
115 (int) data.mv_size, (char *) data.mv_data);
117 printf("Cursor prev\n");
118 while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_PREV)) == 0) {
119 printf("key: %.*s, data: %.*s\n",
120 (int) key.mv_size, (char *) key.mv_data,
121 (int) data.mv_size, (char *) data.mv_data);
123 mdb_cursor_close(cursor);