1 /* 2 * Copyright (c) 2007, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 25 package org.graalvm.compiler.jtt.jdk; 26 27 import org.graalvm.compiler.api.directives.GraalDirectives; 28 import org.graalvm.compiler.jtt.JTTTest; 29 import org.junit.Test; 30 31 /** 32 * Checks that the time between 2 successive calls to {@link System#currentTimeMillis()} is less 33 * than 100 milliseconds at least once in 5_000_000 attempts. 34 */ 35 public class System_currentTimeMillis02 extends JTTTest { 36 37 public static boolean test() { 38 for (int i = 0; i < 5_000_000; i++) { 39 long elapsed = System.currentTimeMillis() - System.currentTimeMillis(); 40 if (elapsed < 100) { 41 return true; 42 } 43 } 44 if (!GraalDirectives.inCompiledCode()) { 45 // We don't care about the result for the interpreter, C1 or C2 46 return true; 47 } 48 return false; 49 } 50 51 @Test 52 public void run0() throws Throwable { 53 runTest("test"); 54 } 55 56 }