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() */
23 #define E(expr) CHECK((rc = (expr)) == MDB_SUCCESS, #expr)
24 #define RES(err, expr) ((rc = expr) == (err) || (CHECK(!rc, #expr), 0))
25 #define CHECK(test, msg) ((test) ? (void)0 : ((void)fprintf(stderr, \
26 "%s:%d: %s: %s\n", __FILE__, __LINE__, msg, mdb_strerror(rc)), abort()))
30 int main(int argc,char * argv[])
46 E(mdb_env_create(&env));
47 E(mdb_env_set_mapsize(env, 10485760));
48 E(mdb_env_set_maxdbs(env, 4));
49 E(mdb_env_open(env, "./testdb", MDB_FIXEDMAP|MDB_NOSYNC, 0664));
50 E(mdb_txn_begin(env, NULL, 0, &txn));
51 E(mdb_open(txn, "id6", MDB_CREATE|MDB_INTEGERKEY, &dbi));
52 E(mdb_cursor_open(txn, dbi, &cursor));
53 E(mdb_stat(txn, dbi, &mst));
55 sval = calloc(1, mst.ms_psize / 4);
56 key.mv_size = sizeof(long);
58 data.mv_size = mst.ms_psize / 4 - 30;
61 printf("Adding 12 values, should yield 3 splits\n");
64 sprintf(sval, "%08x", kval);
65 (void)RES(MDB_KEYEXIST, mdb_cursor_put(cursor, &key, &data, MDB_NOOVERWRITE));
67 printf("Adding 12 more values, should yield 3 splits\n");
70 sprintf(sval, "%08x", kval);
71 (void)RES(MDB_KEYEXIST, mdb_cursor_put(cursor, &key, &data, MDB_NOOVERWRITE));
73 printf("Adding 12 more values, should yield 3 splits\n");
76 sprintf(sval, "%08x", kval);
77 (void)RES(MDB_KEYEXIST, mdb_cursor_put(cursor, &key, &data, MDB_NOOVERWRITE));
79 E(mdb_cursor_get(cursor, &key, &data, MDB_FIRST));
82 printf("key: %p %s, data: %p %.*s\n",
83 key.mv_data, mdb_dkey(&key, dkbuf),
84 data.mv_data, (int) data.mv_size, (char *) data.mv_data);
85 } while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0);
86 CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get");
87 mdb_cursor_close(cursor);
93 for (i= count - 1; i > -1; i-= (random()%5)) {
96 E(mdb_txn_begin(env, NULL, 0, &txn));
97 sprintf(kval, "%03x", values[i & ~0x0f]);
98 sprintf(sval, "%03x %d foo bar", values[i], values[i]);
99 key.mv_size = sizeof(int);
101 data.mv_size = sizeof(sval);
103 if (RES(MDB_NOTFOUND, mdb_del(txn, dbi, &key, &data))) {
107 E(mdb_txn_commit(txn));
111 printf("Deleted %d values\n", j);
113 E(mdb_env_stat(env, &mst));
114 E(mdb_txn_begin(env, NULL, 1, &txn));
115 E(mdb_cursor_open(txn, dbi, &cursor));
116 printf("Cursor next\n");
117 while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0) {
118 printf("key: %.*s, data: %.*s\n",
119 (int) key.mv_size, (char *) key.mv_data,
120 (int) data.mv_size, (char *) data.mv_data);
122 CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get");
123 printf("Cursor prev\n");
124 while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_PREV)) == 0) {
125 printf("key: %.*s, data: %.*s\n",
126 (int) key.mv_size, (char *) key.mv_data,
127 (int) data.mv_size, (char *) data.mv_data);
129 CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get");
130 mdb_cursor_close(cursor);