+/* mtest.c - memory-mapped database tester/toy */
+/*
+ * Copyright 2011 Howard Chu, Symas Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+#define _XOPEN_SOURCE 500 /* srandom(), random() */
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int main(int argc,char * argv[])
{
- int i = 0, rc;
+ int i = 0, j = 0, rc;
MDB_env *env;
- MDB_db *db;
+ MDB_dbi dbi;
MDB_val key, data;
MDB_txn *txn;
- MDB_stat *mst;
+ MDB_stat mst;
+ MDB_cursor *cursor;
int count;
int *values;
char sval[32];
srandom(time(NULL));
- count = random()%512;
+ count = (random()%384) + 64;
values = (int *)malloc(count*sizeof(int));
for(i = 0;i<count;i++) {
values[i] = random()%1024;
}
- rc = mdbenv_create(&env, 10485760);
- rc = mdbenv_open(env, "./testdb", MDB_FIXEDMAP, 0664);
+ rc = mdb_env_create(&env);
+ rc = mdb_env_set_mapsize(env, 10485760);
+ rc = mdb_env_open(env, "./testdb", MDB_FIXEDMAP /*|MDB_NOSYNC*/, 0664);
rc = mdb_txn_begin(env, 0, &txn);
- rc = mdb_open(env, txn, NULL, 0, &db);
+ rc = mdb_open(txn, NULL, 0, &dbi);
key.mv_size = sizeof(int);
key.mv_data = sval;
data.mv_size = sizeof(sval);
data.mv_data = sval;
+ printf("Adding %d values\n", count);
for (i=0;i<count;i++) {
sprintf(sval, "%03x %d foo bar", values[i], values[i]);
- mdb_put(db, txn, &key, &data, 0);
- }
+ rc = mdb_put(txn, dbi, &key, &data, MDB_NOOVERWRITE);
+ if (rc) j++;
+ }
+ if (j) printf("%d duplicates skipped\n", j);
rc = mdb_txn_commit(txn);
- rc = mdbenv_stat(env, &mst);
+ rc = mdb_env_stat(env, &mst);
+
+ rc = mdb_txn_begin(env, 1, &txn);
+ rc = mdb_cursor_open(txn, dbi, &cursor);
+ while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0) {
+ printf("key: %p %.*s, data: %p %.*s\n",
+ key.mv_data, (int) key.mv_size, (char *) key.mv_data,
+ data.mv_data, (int) data.mv_size, (char *) data.mv_data);
+ }
+ mdb_cursor_close(cursor);
+ mdb_txn_abort(txn);
+ j=0;
+ key.mv_data = sval;
for (i= count - 1; i > -1; i-= (random()%5)) {
+ j++;
+ txn=NULL;
rc = mdb_txn_begin(env, 0, &txn);
sprintf(sval, "%03x ", values[i]);
- rc = mdb_del(db, txn, &key, NULL);
- rc = mdb_txn_commit(txn);
+ rc = mdb_del(txn, dbi, &key, NULL);
+ if (rc) {
+ j--;
+ mdb_txn_abort(txn);
+ } else {
+ rc = mdb_txn_commit(txn);
+ }
}
free(values);
- rc = mdbenv_stat(env, &mst);
- mdb_close(db);
- mdbenv_close(env);
+ printf("Deleted %d values\n", j);
+
+ rc = mdb_env_stat(env, &mst);
+ rc = mdb_txn_begin(env, 1, &txn);
+ rc = mdb_cursor_open(txn, dbi, &cursor);
+ printf("Cursor next\n");
+ while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0) {
+ printf("key: %.*s, data: %.*s\n",
+ (int) key.mv_size, (char *) key.mv_data,
+ (int) data.mv_size, (char *) data.mv_data);
+ }
+ printf("Cursor prev\n");
+ while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_PREV)) == 0) {
+ printf("key: %.*s, data: %.*s\n",
+ (int) key.mv_size, (char *) key.mv_data,
+ (int) data.mv_size, (char *) data.mv_data);
+ }
+#if 0
+ /* write ops aren't coordinated with cursors,
+ * this stuff all breaks
+ */
+ printf("Deleting with cursor\n");
+ rc = mdb_txn_begin(env, 0, &txn);
+ rc = mdb_cursor_open(db, txn, &cur2);
+ for (i=0; i<50; i++) {
+ rc = mdb_cursor_get(cur2, &key, &data, MDB_NEXT);
+ printf("key: %p %.*s, data: %p %.*s\n",
+ key.mv_data, (int) key.mv_size, (char *) key.mv_data,
+ data.mv_data, (int) data.mv_size, (char *) data.mv_data);
+ rc = mdb_del(db, txn, &key, NULL);
+ }
+
+ printf("Restarting cursor in txn\n");
+ rc = mdb_cursor_get(cur2, &key, &data, MDB_FIRST);
+ printf("key: %p %.*s, data: %p %.*s\n",
+ key.mv_data, (int) key.mv_size, (char *) key.mv_data,
+ data.mv_data, (int) data.mv_size, (char *) data.mv_data);
+ for (i=0; i<32; i++) {
+ rc = mdb_cursor_get(cur2, &key, &data, MDB_NEXT);
+ printf("key: %p %.*s, data: %p %.*s\n",
+ key.mv_data, (int) key.mv_size, (char *) key.mv_data,
+ data.mv_data, (int) data.mv_size, (char *) data.mv_data);
+ }
+ mdb_cursor_close(cur2);
+ rc = mdb_txn_commit(txn);
+ mdb_cursor_close(cursor);
+ printf("Restarting cursor outside txn\n");
+ rc = mdb_cursor_open(db, NULL, &cursor);
+ rc = mdb_cursor_get(cursor, &key, &data, MDB_FIRST);
+ printf("key: %p %.*s, data: %p %.*s\n",
+ key.mv_data, (int) key.mv_size, (char *) key.mv_data,
+ data.mv_data, (int) data.mv_size, (char *) data.mv_data);
+ for (i=0; i<32; i++) {
+ rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT);
+ printf("key: %p %.*s, data: %p %.*s\n",
+ key.mv_data, (int) key.mv_size, (char *) key.mv_data,
+ data.mv_data, (int) data.mv_size, (char *) data.mv_data);
+ }
+#endif
+ mdb_cursor_close(cursor);
+ mdb_close(txn, dbi);
+
+ mdb_txn_abort(txn);
+ mdb_env_close(env);
return 0;
}
projects / openldap / blobdiff