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-rw-r--r--libraries/liblmdb/mtest6.c141
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diff --git a/libraries/liblmdb/mtest6.c b/libraries/liblmdb/mtest6.c
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+/* mtest6.c - memory-mapped database tester/toy */
+/*
+ * Copyright 2011-2021 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 */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.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()))
+
+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, sdata;
+ MDB_txn *txn;
+ MDB_stat mst;
+ MDB_cursor *cursor;
+ int count;
+ int *values;
+ long kval;
+ char *sval;
+
+ srand(time(NULL));
+
+ E(mdb_env_create(&env));
+ 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, "id6", MDB_CREATE|MDB_INTEGERKEY, &dbi));
+ E(mdb_cursor_open(txn, dbi, &cursor));
+ E(mdb_stat(txn, dbi, &mst));
+
+ sval = calloc(1, mst.ms_psize / 4);
+ key.mv_size = sizeof(long);
+ key.mv_data = &kval;
+ sdata.mv_size = mst.ms_psize / 4 - 30;
+ sdata.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);
+ data = sdata;
+ (void)RES(MDB_KEYEXIST, 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);
+ data = sdata;
+ (void)RES(MDB_KEYEXIST, 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);
+ data = sdata;
+ (void)RES(MDB_KEYEXIST, mdb_cursor_put(cursor, &key, &data, MDB_NOOVERWRITE));
+ }
+ E(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);
+ CHECK(rc == MDB_NOTFOUND, "mdb_cursor_get");
+ mdb_cursor_close(cursor);
+ mdb_txn_commit(txn);
+
+#if 0
+ j=0;
+
+ for (i= count - 1; i > -1; i-= (rand()%5)) {
+ j++;
+ txn=NULL;
+ E(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;
+ if (RES(MDB_NOTFOUND, mdb_del(txn, dbi, &key, &data))) {
+ 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);
+#endif
+ mdb_env_close(env);
+
+ return 0;
+}