1 /* 2 * Copyright (c) 2016, 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 package org.graalvm.compiler.hotspot.test; 24 25 import org.junit.Test; 26 27 import org.graalvm.compiler.api.directives.GraalDirectives; 28 29 /** 30 * Test on-stack-replacement with Graal. The test manually triggers a Graal OSR-compilation which is 31 * later invoked when hitting the backedge counter overflow. 32 */ 33 public class GraalOSRTest extends GraalOSRTestBase { 34 35 @Test 36 public void testOSR() { 37 testOSR("test"); 38 } 39 40 static int limit = 10000; 41 42 public static ReturnValue test() { 43 for (int i = 0; i < limit * limit; i++) { 44 GraalDirectives.blackhole(i); 45 if (GraalDirectives.inCompiledCode()) { 46 return ReturnValue.SUCCESS; 47 } 48 } 49 return ReturnValue.FAILURE; 50 } 51 52 }