1 /* mtest.c - memory-mapped database tester/toy */
3 * Copyright 2011-2014 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>.
19 #define E(expr) CHECK((rc = (expr)) == MDB_SUCCESS, #expr)
20 #define RES(err, expr) ((rc = expr) == (err) || (CHECK(!rc, #expr), 0))
21 #define CHECK(test, msg) ((test) ? (void)0 : ((void)fprintf(stderr, \
22 "%s:%d: %s: %s\n", __FILE__, __LINE__, msg, mdb_strerror(rc)), abort()))
24 int main(int argc,char * argv[])
32 MDB_cursor *cursor, *cur2;
40 count = (rand()%384) + 64;
41 values = (int *)malloc(count*sizeof(int));
43 for(i = 0;i<count;i++) {
44 values[i] = rand()%1024;
47 E(mdb_env_create(&env));
48 E(mdb_env_set_mapsize(env, 10485760));
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, NULL, 0, &dbi));
53 key.mv_size = sizeof(int);
55 data.mv_size = sizeof(sval);
58 printf("Adding %d values\n", count);
59 for (i=0;i<count;i++) {
60 sprintf(sval, "%03x %d foo bar", values[i], values[i]);
61 if (RES(MDB_KEYEXIST, mdb_put(txn, dbi, &key, &data, MDB_NOOVERWRITE))) {
63 data.mv_size = sizeof(sval);
67 if (j) printf("%d duplicates skipped\n", j);
68 E(mdb_txn_commit(txn));
69 E(mdb_env_stat(env, &mst));
71 E(mdb_txn_begin(env, NULL, 1, &txn));
72 E(mdb_cursor_open(txn, dbi, &cursor));
73 while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0) {
74 printf("key: %p %.*s, data: %p %.*s\n",
75 key.mv_data, (int) key.mv_size, (char *) key.mv_data,
76 data.mv_data, (int) data.mv_size, (char *) data.mv_data);
78 CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get");
79 mdb_cursor_close(cursor);
84 for (i= count - 1; i > -1; i-= (rand()%5)) {
87 E(mdb_txn_begin(env, NULL, 0, &txn));
88 sprintf(sval, "%03x ", values[i]);
89 if (RES(MDB_NOTFOUND, mdb_del(txn, dbi, &key, NULL))) {
93 E(mdb_txn_commit(txn));
97 printf("Deleted %d values\n", j);
99 E(mdb_env_stat(env, &mst));
100 E(mdb_txn_begin(env, NULL, 1, &txn));
101 E(mdb_cursor_open(txn, dbi, &cursor));
102 printf("Cursor next\n");
103 while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0) {
104 printf("key: %.*s, data: %.*s\n",
105 (int) key.mv_size, (char *) key.mv_data,
106 (int) data.mv_size, (char *) data.mv_data);
108 CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get");
109 printf("Cursor last\n");
110 E(mdb_cursor_get(cursor, &key, &data, MDB_LAST));
111 printf("key: %.*s, data: %.*s\n",
112 (int) key.mv_size, (char *) key.mv_data,
113 (int) data.mv_size, (char *) data.mv_data);
114 printf("Cursor prev\n");
115 while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_PREV)) == 0) {
116 printf("key: %.*s, data: %.*s\n",
117 (int) key.mv_size, (char *) key.mv_data,
118 (int) data.mv_size, (char *) data.mv_data);
120 CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get");
121 printf("Cursor last/prev\n");
122 E(mdb_cursor_get(cursor, &key, &data, MDB_LAST));
123 printf("key: %.*s, data: %.*s\n",
124 (int) key.mv_size, (char *) key.mv_data,
125 (int) data.mv_size, (char *) data.mv_data);
126 E(mdb_cursor_get(cursor, &key, &data, MDB_PREV));
127 printf("key: %.*s, data: %.*s\n",
128 (int) key.mv_size, (char *) key.mv_data,
129 (int) data.mv_size, (char *) data.mv_data);
133 printf("Deleting with cursor\n");
134 E(mdb_txn_begin(env, NULL, 0, &txn));
135 E(mdb_cursor_open(txn, dbi, &cur2));
136 for (i=0; i<50; i++) {
137 if (RES(MDB_NOTFOUND, mdb_cursor_get(cur2, &key, &data, MDB_NEXT)))
139 printf("key: %p %.*s, data: %p %.*s\n",
140 key.mv_data, (int) key.mv_size, (char *) key.mv_data,
141 data.mv_data, (int) data.mv_size, (char *) data.mv_data);
142 E(mdb_del(txn, dbi, &key, NULL));
145 printf("Restarting cursor in txn\n");
146 for (op=MDB_FIRST, i=0; i<=32; op=MDB_NEXT, i++) {
147 if (RES(MDB_NOTFOUND, mdb_cursor_get(cur2, &key, &data, op)))
149 printf("key: %p %.*s, data: %p %.*s\n",
150 key.mv_data, (int) key.mv_size, (char *) key.mv_data,
151 data.mv_data, (int) data.mv_size, (char *) data.mv_data);
153 mdb_cursor_close(cur2);
154 E(mdb_txn_commit(txn));
156 printf("Restarting cursor outside txn\n");
157 E(mdb_txn_begin(env, NULL, 0, &txn));
158 E(mdb_cursor_open(txn, dbi, &cursor));
159 for (op=MDB_FIRST, i=0; i<=32; op=MDB_NEXT, i++) {
160 if (RES(MDB_NOTFOUND, mdb_cursor_get(cursor, &key, &data, op)))
162 printf("key: %p %.*s, data: %p %.*s\n",
163 key.mv_data, (int) key.mv_size, (char *) key.mv_data,
164 data.mv_data, (int) data.mv_size, (char *) data.mv_data);
166 mdb_cursor_close(cursor);