1 /* mtest.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>.
14 #define _XOPEN_SOURCE 500 /* srandom(), random() */
20 #define E(expr) CHECK((rc = (expr)) == MDB_SUCCESS, #expr)
21 #define RES(err, expr) ((rc = expr) == (err) || (CHECK(!rc, #expr), 0))
22 #define CHECK(test, msg) ((test) ? (void)0 : ((void)fprintf(stderr, \
23 "%s:%d: %s: %s\n", __FILE__, __LINE__, msg, mdb_strerror(rc)), abort()))
25 int main(int argc,char * argv[])
33 MDB_cursor *cursor, *cur2;
41 count = (random()%384) + 64;
42 values = (int *)malloc(count*sizeof(int));
44 for(i = 0;i<count;i++) {
45 values[i] = random()%1024;
48 E(mdb_env_create(&env));
49 E(mdb_env_set_mapsize(env, 10485760));
50 E(mdb_env_open(env, "./testdb", MDB_FIXEDMAP /*|MDB_NOSYNC*/, 0664));
51 E(mdb_txn_begin(env, NULL, 0, &txn));
52 E(mdb_open(txn, NULL, 0, &dbi));
54 key.mv_size = sizeof(int);
56 data.mv_size = sizeof(sval);
59 printf("Adding %d values\n", count);
60 for (i=0;i<count;i++) {
61 sprintf(sval, "%03x %d foo bar", values[i], values[i]);
62 if (RES(MDB_KEYEXIST, mdb_put(txn, dbi, &key, &data, MDB_NOOVERWRITE))) {
64 data.mv_size = sizeof(sval);
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 last\n");
111 E(mdb_cursor_get(cursor, &key, &data, MDB_LAST));
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);
115 printf("Cursor prev\n");
116 while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_PREV)) == 0) {
117 printf("key: %.*s, data: %.*s\n",
118 (int) key.mv_size, (char *) key.mv_data,
119 (int) data.mv_size, (char *) data.mv_data);
121 CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get");
122 printf("Cursor last/prev\n");
123 E(mdb_cursor_get(cursor, &key, &data, MDB_LAST));
124 printf("key: %.*s, data: %.*s\n",
125 (int) key.mv_size, (char *) key.mv_data,
126 (int) data.mv_size, (char *) data.mv_data);
127 E(mdb_cursor_get(cursor, &key, &data, MDB_PREV));
128 printf("key: %.*s, data: %.*s\n",
129 (int) key.mv_size, (char *) key.mv_data,
130 (int) data.mv_size, (char *) data.mv_data);
134 printf("Deleting with cursor\n");
135 E(mdb_txn_begin(env, NULL, 0, &txn));
136 E(mdb_cursor_open(txn, dbi, &cur2));
137 for (i=0; i<50; i++) {
138 if (RES(MDB_NOTFOUND, mdb_cursor_get(cur2, &key, &data, MDB_NEXT)))
140 printf("key: %p %.*s, data: %p %.*s\n",
141 key.mv_data, (int) key.mv_size, (char *) key.mv_data,
142 data.mv_data, (int) data.mv_size, (char *) data.mv_data);
143 E(mdb_del(txn, dbi, &key, NULL));
146 printf("Restarting cursor in txn\n");
147 for (op=MDB_FIRST, i=0; i<=32; op=MDB_NEXT, i++) {
148 if (RES(MDB_NOTFOUND, mdb_cursor_get(cur2, &key, &data, op)))
150 printf("key: %p %.*s, data: %p %.*s\n",
151 key.mv_data, (int) key.mv_size, (char *) key.mv_data,
152 data.mv_data, (int) data.mv_size, (char *) data.mv_data);
154 mdb_cursor_close(cur2);
155 E(mdb_txn_commit(txn));
157 printf("Restarting cursor outside txn\n");
158 E(mdb_txn_begin(env, NULL, 0, &txn));
159 E(mdb_cursor_open(txn, dbi, &cursor));
160 for (op=MDB_FIRST, i=0; i<=32; op=MDB_NEXT, i++) {
161 if (RES(MDB_NOTFOUND, mdb_cursor_get(cursor, &key, &data, op)))
163 printf("key: %p %.*s, data: %p %.*s\n",
164 key.mv_data, (int) key.mv_size, (char *) key.mv_data,
165 data.mv_data, (int) data.mv_size, (char *) data.mv_data);
167 mdb_cursor_close(cursor);