/* mtest.c - memory-mapped database tester/toy */
/*
- * Copyright 2011 Howard Chu, Symas Corp.
+ * Copyright 2011-2018 Howard Chu, Symas Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* 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>
#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_txn *txn;
MDB_stat mst;
MDB_cursor *cursor, *cur2;
+ MDB_cursor_op op;
int count;
int *values;
- char sval[32];
+ char sval[32] = "";
- srandom(time(NULL));
+ srand(time(NULL));
- count = (random()%384) + 64;
+ count = (rand()%384) + 64;
values = (int *)malloc(count*sizeof(int));
for(i = 0;i<count;i++) {
- values[i] = random()%1024;
+ values[i] = rand()%1024;
}
- 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, NULL, 0, &txn);
- rc = mdb_open(txn, NULL, 0, &dbi);
+ E(mdb_env_create(&env));
+ E(mdb_env_set_maxreaders(env, 1));
+ E(mdb_env_set_mapsize(env, 10485760));
+ E(mdb_env_open(env, "./testdb", MDB_FIXEDMAP /*|MDB_NOSYNC*/, 0664));
+
+ E(mdb_txn_begin(env, NULL, 0, &txn));
+ E(mdb_dbi_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]);
- rc = mdb_put(txn, dbi, &key, &data, MDB_NOOVERWRITE);
- if (rc) {
+ /* Set <data> in each iteration, since MDB_NOOVERWRITE may modify it */
+ data.mv_size = sizeof(sval);
+ data.mv_data = sval;
+ if (RES(MDB_KEYEXIST, mdb_put(txn, dbi, &key, &data, MDB_NOOVERWRITE))) {
j++;
data.mv_size = sizeof(sval);
data.mv_data = sval;
}
}
if (j) printf("%d duplicates skipped\n", j);
- rc = mdb_txn_commit(txn);
- rc = mdb_env_stat(env, &mst);
+ E(mdb_txn_commit(txn));
+ E(mdb_env_stat(env, &mst));
- rc = mdb_txn_begin(env, NULL, 1, &txn);
- rc = mdb_cursor_open(txn, dbi, &cursor);
+ 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-= (random()%5)) {
+ for (i= count - 1; i > -1; i-= (rand()%5)) {
j++;
txn=NULL;
- rc = mdb_txn_begin(env, NULL, 0, &txn);
+ E(mdb_txn_begin(env, NULL, 0, &txn));
sprintf(sval, "%03x ", values[i]);
- rc = mdb_del(txn, dbi, &key, NULL);
- if (rc) {
+ if (RES(MDB_NOTFOUND, mdb_del(txn, dbi, &key, NULL))) {
j--;
mdb_txn_abort(txn);
} else {
- rc = mdb_txn_commit(txn);
+ E(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);
+ 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 last\n");
- rc = mdb_cursor_get(cursor, &key, &data, MDB_LAST);
+ E(mdb_cursor_get(cursor, &key, &data, MDB_LAST));
printf("key: %.*s, data: %.*s\n",
(int) key.mv_size, (char *) key.mv_data,
(int) data.mv_size, (char *) data.mv_data);
(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 last/prev\n");
- rc = mdb_cursor_get(cursor, &key, &data, MDB_LAST);
+ E(mdb_cursor_get(cursor, &key, &data, MDB_LAST));
printf("key: %.*s, data: %.*s\n",
(int) key.mv_size, (char *) key.mv_data,
(int) data.mv_size, (char *) data.mv_data);
- rc = mdb_cursor_get(cursor, &key, &data, MDB_PREV);
+ E(mdb_cursor_get(cursor, &key, &data, MDB_PREV));
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_txn_abort(txn);
printf("Deleting with cursor\n");
- rc = mdb_txn_begin(env, NULL, 0, &txn);
- rc = mdb_cursor_open(txn, dbi, &cur2);
+ E(mdb_txn_begin(env, NULL, 0, &txn));
+ E(mdb_cursor_open(txn, dbi, &cur2));
for (i=0; i<50; i++) {
- rc = mdb_cursor_get(cur2, &key, &data, MDB_NEXT);
- if (rc)
+ if (RES(MDB_NOTFOUND, mdb_cursor_get(cur2, &key, &data, MDB_NEXT)))
break;
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(txn, dbi, &key, NULL);
+ E(mdb_del(txn, dbi, &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);
- if (rc) break;
+ for (op=MDB_FIRST, i=0; i<=32; op=MDB_NEXT, i++) {
+ if (RES(MDB_NOTFOUND, mdb_cursor_get(cur2, &key, &data, op)))
+ break;
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);
+ E(mdb_txn_commit(txn));
printf("Restarting cursor outside txn\n");
- rc = mdb_txn_begin(env, NULL, 0, &txn);
- rc = mdb_cursor_open(txn, dbi, &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);
- if (rc) break;
+ E(mdb_txn_begin(env, NULL, 0, &txn));
+ E(mdb_cursor_open(txn, dbi, &cursor));
+ for (op=MDB_FIRST, i=0; i<=32; op=MDB_NEXT, i++) {
+ if (RES(MDB_NOTFOUND, mdb_cursor_get(cursor, &key, &data, op)))
+ break;
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_close(env, dbi);
-
mdb_txn_abort(txn);
+
+ mdb_dbi_close(env, dbi);
mdb_env_close(env);
return 0;
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