/*
* Copyright (c) 2007, 2012, 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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*/
package org.graalvm.compiler.jtt.jdk;
import org.junit.Test;
import org.graalvm.compiler.jtt.JTTTest;
/*
*/
public class System_currentTimeMillis02 extends JTTTest {
static void m(long[] times) {
times[1] = System.currentTimeMillis() - times[0];
}
public static boolean test() {
long[] times = new long[2]; // { start, delta }
times[0] = System.currentTimeMillis();
times[1] = 0;
// force compilation:
for (int i = 0; i < 5000; i++) {
m(times);
}
times[0] = System.currentTimeMillis();
times[1] = 0;
for (int i = 0; times[1] == 0 && i < 5000000; i++) {
m(times);
// do nothing.
}
// better get at least 100 millisecond resolution.
return times[1] >= 1 && times[1] < 100;
}
@Test
public void run0() throws Throwable {
runTest("test");
}
}