1 /* 2 * Copyright (c) 2015, 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 24 /* 25 * @test 26 * @bug 8136421 27 * @requires vm.jvmci 28 * @library / /test/lib/ 29 * @library ../common/patches 30 * @modules java.base/jdk.internal.misc 31 * @modules jdk.internal.vm.ci/jdk.vm.ci.hotspot 32 * @build jdk.internal.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper 33 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI 34 * compiler.jvmci.compilerToVM.GetMaxCallTargetOffsetTest 35 */ 36 37 package compiler.jvmci.compilerToVM; 38 39 import jdk.test.lib.Asserts; 40 import jdk.vm.ci.hotspot.CompilerToVMHelper; 41 42 public class GetMaxCallTargetOffsetTest { 43 public static void main(String args[]) { 44 new GetMaxCallTargetOffsetTest().runTest(); 45 } 46 47 private void runTest() { 48 long offset1 = CompilerToVMHelper.getMaxCallTargetOffset(0L); 49 Asserts.assertNE(offset1, 0L, 50 "Unexpected maxCallTargetOffset for 0L"); 51 long offset2 = CompilerToVMHelper.getMaxCallTargetOffset(100L); 52 Asserts.assertNE(offset2, 0L, 53 "Unexpected maxCallTargetOffset for 100L"); 54 long offset3 = CompilerToVMHelper.getMaxCallTargetOffset(1000000L); 55 Asserts.assertNE(offset3, 0L, 56 "Unexpected maxCallTargetOffset for 1000000L"); 57 // there can be 2 same offsets, but not 3 58 Asserts.assertFalse(offset1 == offset2 && offset2 == offset3, 59 "All 3 offsets are unexpectedly equal: " + offset1); 60 } 61 }