125 lines
3.4 KiB
C
125 lines
3.4 KiB
C
/* mtest2.c - memory-mapped database tester/toy */
|
|
/*
|
|
* Copyright 2011-2018 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>.
|
|
*/
|
|
|
|
/* Just like mtest.c, but using a subDB instead of the main DB */
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <time.h>
|
|
#include "lmdb.h"
|
|
|
|
#define E(expr) CHECK((rc = (expr)) == MDB_SUCCESS, #expr)
|
|
#define RES(err, expr) ((rc = expr) == (err) || (CHECK(!rc, #expr), 0))
|
|
#define CHECK(test, msg) ((test) ? (void)0 : ((void)fprintf(stderr, \
|
|
"%s:%d: %s: %s\n", __FILE__, __LINE__, msg, mdb_strerror(rc)), abort()))
|
|
|
|
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;
|
|
char sval[32] = "";
|
|
|
|
srand(time(NULL));
|
|
|
|
count = (rand()%384) + 64;
|
|
values = (int *)malloc(count*sizeof(int));
|
|
|
|
for(i = 0;i<count;i++) {
|
|
values[i] = rand()%1024;
|
|
}
|
|
|
|
E(mdb_env_create(&env));
|
|
E(mdb_env_set_maxreaders(env, 1));
|
|
E(mdb_env_set_mapsize(env, 10485760));
|
|
E(mdb_env_set_maxdbs(env, 4));
|
|
E(mdb_env_open(env, "./testdb", MDB_FIXEDMAP|MDB_NOSYNC, 0664));
|
|
|
|
E(mdb_txn_begin(env, NULL, 0, &txn));
|
|
E(mdb_dbi_open(txn, "id1", MDB_CREATE, &dbi));
|
|
|
|
key.mv_size = sizeof(int);
|
|
key.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]);
|
|
data.mv_size = sizeof(sval);
|
|
data.mv_data = sval;
|
|
if (RES(MDB_KEYEXIST, mdb_put(txn, dbi, &key, &data, MDB_NOOVERWRITE)))
|
|
j++;
|
|
}
|
|
if (j) printf("%d duplicates skipped\n", j);
|
|
E(mdb_txn_commit(txn));
|
|
E(mdb_env_stat(env, &mst));
|
|
|
|
E(mdb_txn_begin(env, NULL, MDB_RDONLY, &txn));
|
|
E(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);
|
|
}
|
|
CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get");
|
|
mdb_cursor_close(cursor);
|
|
mdb_txn_abort(txn);
|
|
|
|
j=0;
|
|
key.mv_data = sval;
|
|
for (i= count - 1; i > -1; i-= (rand()%5)) {
|
|
j++;
|
|
txn=NULL;
|
|
E(mdb_txn_begin(env, NULL, 0, &txn));
|
|
sprintf(sval, "%03x ", values[i]);
|
|
if (RES(MDB_NOTFOUND, mdb_del(txn, dbi, &key, NULL))) {
|
|
j--;
|
|
mdb_txn_abort(txn);
|
|
} else {
|
|
E(mdb_txn_commit(txn));
|
|
}
|
|
}
|
|
free(values);
|
|
printf("Deleted %d values\n", j);
|
|
|
|
E(mdb_env_stat(env, &mst));
|
|
E(mdb_txn_begin(env, NULL, MDB_RDONLY, &txn));
|
|
E(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);
|
|
}
|
|
CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get");
|
|
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);
|
|
}
|
|
CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get");
|
|
mdb_cursor_close(cursor);
|
|
mdb_txn_abort(txn);
|
|
|
|
mdb_dbi_close(env, dbi);
|
|
mdb_env_close(env);
|
|
return 0;
|
|
}
|