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Howard Chu 2011-09-07 23:10:19 -07:00
parent 1f8c3369b9
commit 47c1218916
1 changed files with 129 additions and 0 deletions
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libraries/libmdb/mtest5.c Normal file
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/* mtest5.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 sorted duplicate DBs using cursor_put */
#define _XOPEN_SOURCE 500 /* srandom(), random() */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "mdb.h"
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];
char kval[sizeof(int)];
srandom(time(NULL));
memset(sval, 0, sizeof(sval));
count = (random()%384) + 64;
values = (int *)malloc(count*sizeof(int));
for(i = 0;i<count;i++) {
values[i] = random()%1024;
}
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, 0, &txn);
rc = mdb_open(txn, "id2", MDB_CREATE|MDB_DUPSORT, &dbi);
rc = mdb_cursor_open(txn, dbi, &cursor);
key.mv_size = sizeof(int);
key.mv_data = kval;
data.mv_size = sizeof(sval);
data.mv_data = sval;
printf("Adding %d values\n", count);
for (i=0;i<count;i++) {
if (!(i & 0x0f))
sprintf(kval, "%03x", values[i]);
sprintf(sval, "%03x %d foo bar", values[i], values[i]);
rc = mdb_cursor_put(cursor, &key, &data, MDB_NODUPDATA);
if (rc) j++;
}
if (j) printf("%d duplicates skipped\n", j);
mdb_cursor_close(cursor);
rc = mdb_txn_commit(txn);
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;
for (i= count - 1; i > -1; i-= (random()%5)) {
j++;
txn=NULL;
rc = mdb_txn_begin(env, 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, 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);
mdb_env_close(env);
return 0;
}