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view graal/com.oracle.graal.jtt/src/com/oracle/graal/jtt/jdk/System_currentTimeMillis02.java @ 10582:6cb9516d7036
Ensure compilation in System_currentTimeMillis02
author | Morris Meyer <morris.meyer@oracle.com> |
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date | Sun, 30 Jun 2013 11:19:21 -0400 |
parents | f14413a91e12 |
children | ace9e84cc773 |
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/* * 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. * * 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. */ package com.oracle.graal.jtt.jdk; import com.oracle.graal.jtt.*; import org.junit.*; /* */ 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"); } }