You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
131 lines
3.4 KiB
131 lines
3.4 KiB
/* mtest6.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>.
|
|
*/
|
|
|
|
/* Tests for DB splits and merges */
|
|
#define _XOPEN_SOURCE 500 /* srandom(), random() */
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <time.h>
|
|
#include "lmdb.h"
|
|
|
|
char dkbuf[1024];
|
|
|
|
int main(int argc,char * argv[])
|
|
{
|
|
int i = 0, j = 0, rc;
|
|
MDB_env *env;
|
|
MDB_dbi dbi;
|
|
MDB_val key, data;
|
|
MDB_txn *txn;
|
|
MDB_stat mst;
|
|
MDB_cursor *cursor;
|
|
int count;
|
|
int *values;
|
|
long kval;
|
|
char *sval;
|
|
|
|
srandom(time(NULL));
|
|
|
|
rc = mdb_env_create(&env);
|
|
rc = mdb_env_set_mapsize(env, 10485760);
|
|
rc = mdb_env_set_maxdbs(env, 4);
|
|
rc = mdb_env_open(env, "./testdb", MDB_FIXEDMAP|MDB_NOSYNC, 0664);
|
|
rc = mdb_txn_begin(env, NULL, 0, &txn);
|
|
rc = mdb_open(txn, "id6", MDB_CREATE|MDB_INTEGERKEY, &dbi);
|
|
rc = mdb_cursor_open(txn, dbi, &cursor);
|
|
rc = mdb_stat(txn, dbi, &mst);
|
|
|
|
sval = calloc(1, mst.ms_psize / 4);
|
|
key.mv_size = sizeof(long);
|
|
key.mv_data = &kval;
|
|
data.mv_size = mst.ms_psize / 4 - 30;
|
|
data.mv_data = sval;
|
|
|
|
printf("Adding 12 values, should yield 3 splits\n");
|
|
for (i=0;i<12;i++) {
|
|
kval = i*5;
|
|
sprintf(sval, "%08x", kval);
|
|
rc = mdb_cursor_put(cursor, &key, &data, MDB_NOOVERWRITE);
|
|
}
|
|
printf("Adding 12 more values, should yield 3 splits\n");
|
|
for (i=0;i<12;i++) {
|
|
kval = i*5+4;
|
|
sprintf(sval, "%08x", kval);
|
|
rc = mdb_cursor_put(cursor, &key, &data, MDB_NOOVERWRITE);
|
|
}
|
|
printf("Adding 12 more values, should yield 3 splits\n");
|
|
for (i=0;i<12;i++) {
|
|
kval = i*5+1;
|
|
sprintf(sval, "%08x", kval);
|
|
rc = mdb_cursor_put(cursor, &key, &data, MDB_NOOVERWRITE);
|
|
}
|
|
rc = mdb_cursor_get(cursor, &key, &data, MDB_FIRST);
|
|
|
|
do {
|
|
printf("key: %p %s, data: %p %.*s\n",
|
|
key.mv_data, mdb_dkey(&key, dkbuf),
|
|
data.mv_data, (int) data.mv_size, (char *) data.mv_data);
|
|
} while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0);
|
|
mdb_cursor_close(cursor);
|
|
mdb_txn_commit(txn);
|
|
|
|
#if 0
|
|
j=0;
|
|
|
|
for (i= count - 1; i > -1; i-= (random()%5)) {
|
|
j++;
|
|
txn=NULL;
|
|
rc = mdb_txn_begin(env, NULL, 0, &txn);
|
|
sprintf(kval, "%03x", values[i & ~0x0f]);
|
|
sprintf(sval, "%03x %d foo bar", values[i], values[i]);
|
|
key.mv_size = sizeof(int);
|
|
key.mv_data = kval;
|
|
data.mv_size = sizeof(sval);
|
|
data.mv_data = sval;
|
|
rc = mdb_del(txn, dbi, &key, &data);
|
|
if (rc) {
|
|
j--;
|
|
mdb_txn_abort(txn);
|
|
} else {
|
|
rc = mdb_txn_commit(txn);
|
|
}
|
|
}
|
|
free(values);
|
|
printf("Deleted %d values\n", j);
|
|
|
|
rc = mdb_env_stat(env, &mst);
|
|
rc = mdb_txn_begin(env, NULL, 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);
|
|
}
|
|
mdb_cursor_close(cursor);
|
|
mdb_close(txn, dbi);
|
|
|
|
mdb_txn_abort(txn);
|
|
#endif
|
|
mdb_env_close(env);
|
|
|
|
return 0;
|
|
}
|
|
|