Commit 35012485 authored by Howard Chu's avatar Howard Chu
Browse files

Fix 2e3bc39f

Various mistakes when converting from previous data structures.
Add a few more debug asserts/sanity checks.
Split all "if (foo) return" constructs to separate lines to allow
easier breakpoint setting.

Add mtest6 for checking mdb_split() behavior. This needs to be
expanded to check rebalance/merge cases too.
parent acdc248f
mtest
mtest[23]
mtest[23456]
testdb
mdb_stat
*.[ao]
......
......@@ -26,6 +26,7 @@ mtest2: mtest2.o libmdb.a
mtest3: mtest3.o libmdb.a
mtest4: mtest4.o libmdb.a
mtest5: mtest5.o libmdb.a
mtest6: mtest6.o libmdb.a
mdb.o: mdb.c mdb.h midl.h
$(CC) $(CFLAGS) -fPIC $(CPPFLAGS) -c mdb.c
......
This diff is collapsed.
/* 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 "mdb.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, 0, &txn);
rc = mdb_open(txn, "id2", 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, 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);
#endif
mdb_env_close(env);
return 0;
}
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