55 lines
2.0 KiB
Java
55 lines
2.0 KiB
Java
/*
|
|
* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
*
|
|
* This code is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 only, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This code is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* version 2 for more details (a copy is included in the LICENSE file that
|
|
* accompanied this code).
|
|
*
|
|
* You should have received a copy of the GNU General Public License version
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*/
|
|
/*
|
|
* @test
|
|
* @bug 6882687 8011124
|
|
* @summary KerberosTime too imprecise
|
|
* @modules java.security.jgss/sun.security.krb5.internal
|
|
*/
|
|
|
|
import sun.security.krb5.internal.KerberosTime;
|
|
|
|
public class MicroTime {
|
|
public static void main(String[] args) throws Exception {
|
|
// We count how many different KerberosTime values
|
|
// can be acquired within one second.
|
|
KerberosTime t1 = KerberosTime.now();
|
|
KerberosTime last = t1;
|
|
int count = 0;
|
|
while (true) {
|
|
KerberosTime t2 = KerberosTime.now();
|
|
if (t2.getTime() - t1.getTime() > 1000) break;
|
|
if (!last.equals(t2)) {
|
|
last = t2;
|
|
count++;
|
|
}
|
|
}
|
|
// We believe a nice KerberosTime can at least tell the
|
|
// difference of 100 musec.
|
|
if (count < 10000) {
|
|
throw new Exception("What? only " + (1000000/count) +
|
|
" musec precision?");
|
|
}
|
|
}
|
|
}
|