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 24 25 /* 26 * @test ClassResolutionTest 27 * @bug 8144874 28 * @modules java.base/jdk.internal.misc 29 * @library /test/lib 30 * @run driver ClassResolutionTest 31 */ 32 33 import jdk.test.lib.process.OutputAnalyzer; 34 import jdk.test.lib.process.ProcessTools; 35 import java.lang.ref.WeakReference; 36 import java.lang.reflect.Method; 37 38 public class ClassResolutionTest { 39 40 public static class ClassResolutionTestMain { 41 42 public static class Thing1 { 43 public static int getThingNumber() { 44 return 1; 45 } 46 }; 47 public static class Thing1Handler { 48 public static int getThingNumber() { 49 return Thing1.getThingNumber(); 50 } 51 }; 52 53 public static void main(String... args) throws Exception { 54 int x = Thing1Handler.getThingNumber(); 55 System.out.println("ThingNumber: "+Integer.toString(x)); 56 } 57 } 58 59 public static void main(String... args) throws Exception { 60 61 // (1) class+resolve should turn on. 62 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-Xlog:class+resolve=debug", 63 ClassResolutionTestMain.class.getName()); 64 OutputAnalyzer o = new OutputAnalyzer(pb.start()); 65 o.shouldContain("[class,resolve] ClassResolutionTest$ClassResolutionTestMain$Thing1Handler ClassResolutionTest$ClassResolutionTestMain$Thing1"); 66 o.shouldContain("[class,resolve] resolve JVM_CONSTANT_MethodHandle"); 67 68 // (2) class+resolve should turn off. 69 pb = ProcessTools.createJavaProcessBuilder("-Xlog:class+resolve=debug", 70 "-Xlog:class+resolve=off", 71 ClassResolutionTestMain.class.getName()); 72 o = new OutputAnalyzer(pb.start()); 73 o.shouldNotContain("[class,resolve]"); 74 75 // (3) TraceClassResolution should turn on. 76 pb = ProcessTools.createJavaProcessBuilder("-XX:+TraceClassResolution", 77 ClassResolutionTestMain.class.getName()); 78 o = new OutputAnalyzer(pb.start()); 79 o.shouldContain("[class,resolve] ClassResolutionTest$ClassResolutionTestMain$Thing1Handler ClassResolutionTest$ClassResolutionTestMain$Thing1"); 80 81 // (4) TraceClassResolution should turn off. 82 pb = ProcessTools.createJavaProcessBuilder("-Xlog:class+resolve=debug", 83 "-XX:-TraceClassResolution", 84 ClassResolutionTestMain.class.getName()); 85 o = new OutputAnalyzer(pb.start()); 86 o.shouldNotContain("[class,resolve]"); 87 88 }; 89 90 }