/*
* Copyright (c) 2006, 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.
*
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*/
/**
* @test
* @bug 6449335
* @summary MSCAPI's PRNG is too slow
*/
import java.security.SecureRandom;
public class PrngSlow {
public static void main(String[] args) throws Exception {
double t = 0.0;
try {
SecureRandom sr = null;
sr = SecureRandom.getInstance("PRNG", "SunMSCAPI");
long start = System.nanoTime();
int x = 0;
for(int i = 0; i < 10000; i++) {
if (i % 100 == 0) System.err.print(".");
if (sr.nextBoolean()) x++;
};
t = (System.nanoTime() - start) / 1000000000.0;
System.err.println("\nSpend " + t + " seconds");
} catch (Exception e) {
// Not supported here, maybe not a Win32
System.err.println("Cannot find PRNG for SunMSCAPI or other mysterious bugs");
e.printStackTrace();
return;
}
if (t > 5)
throw new RuntimeException("Still too slow");
}
}