1 /* mtest2.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 /* Just like mtest.c, but using a subDB instead of the main DB */
17 #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()))
28 int main(int argc,char * argv[])
43 count = (random()%384) + 64;
44 values = (int *)malloc(count*sizeof(int));
46 for(i = 0;i<count;i++) {
47 values[i] = random()%1024;
50 E(mdb_env_create(&env));
51 E(mdb_env_set_mapsize(env, 10485760));
52 E(mdb_env_set_maxdbs(env, 4));
53 E(mdb_env_open(env, "./testdb", MDB_FIXEDMAP|MDB_NOSYNC, 0664));
54 E(mdb_txn_begin(env, NULL, 0, &txn));
55 E(mdb_open(txn, "id1", MDB_CREATE, &dbi));
57 key.mv_size = sizeof(int);
59 data.mv_size = sizeof(sval);
62 printf("Adding %d values\n", count);
63 for (i=0;i<count;i++) {
64 sprintf(sval, "%03x %d foo bar", values[i], values[i]);
65 if (RES(MDB_KEYEXIST, mdb_put(txn, dbi, &key, &data, MDB_NOOVERWRITE)))
68 if (j) printf("%d duplicates skipped\n", j);
69 E(mdb_txn_commit(txn));
70 E(mdb_env_stat(env, &mst));
72 E(mdb_txn_begin(env, NULL, 1, &txn));
73 E(mdb_cursor_open(txn, dbi, &cursor));
74 while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0) {
75 printf("key: %p %.*s, data: %p %.*s\n",
76 key.mv_data, (int) key.mv_size, (char *) key.mv_data,
77 data.mv_data, (int) data.mv_size, (char *) data.mv_data);
79 CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get");
80 mdb_cursor_close(cursor);
85 for (i= count - 1; i > -1; i-= (random()%5)) {
88 E(mdb_txn_begin(env, NULL, 0, &txn));
89 sprintf(sval, "%03x ", values[i]);
90 if (RES(MDB_NOTFOUND, mdb_del(txn, dbi, &key, NULL))) {
94 E(mdb_txn_commit(txn));
98 printf("Deleted %d values\n", j);
100 E(mdb_env_stat(env, &mst));
101 E(mdb_txn_begin(env, NULL, 1, &txn));
102 E(mdb_cursor_open(txn, dbi, &cursor));
103 printf("Cursor next\n");
104 while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0) {
105 printf("key: %.*s, data: %.*s\n",
106 (int) key.mv_size, (char *) key.mv_data,
107 (int) data.mv_size, (char *) data.mv_data);
109 CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get");
110 printf("Cursor prev\n");
111 while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_PREV)) == 0) {
112 printf("key: %.*s, data: %.*s\n",
113 (int) key.mv_size, (char *) key.mv_data,
114 (int) data.mv_size, (char *) data.mv_data);
116 CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get");
117 mdb_cursor_close(cursor);