| /* |
| * Copyright (c) 2017, 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. |
| */ |
| |
| /* |
| * @test |
| * @bug 8174749 |
| * @summary MemberNameTable should reuse entries |
| * @library /test/lib |
| * @run main MemberNameLeak |
| */ |
| |
| import java.lang.invoke.*; |
| import jdk.test.lib.process.OutputAnalyzer; |
| import jdk.test.lib.process.ProcessTools; |
| |
| public class MemberNameLeak { |
| static class Leak { |
| public void callMe() { |
| } |
| |
| public static void main(String[] args) throws Throwable { |
| Leak leak = new Leak(); |
| |
| for (int i = 0; i < 10; i++) { |
| MethodHandles.Lookup lookup = MethodHandles.lookup(); |
| MethodType mt = MethodType.fromMethodDescriptorString("()V", Leak.class.getClassLoader()); |
| // findSpecial leaks some native mem |
| MethodHandle mh = lookup.findSpecial(Leak.class, "callMe", mt, Leak.class); |
| mh.invokeExact(leak); |
| } |
| |
| System.gc(); // make mh unused |
| } |
| } |
| |
| public static void test(String gc) throws Throwable { |
| // Run this Leak class with logging |
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( |
| "-Xlog:membername+table=trace", |
| gc, Leak.class.getName()); |
| OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
| output.shouldContain("ResolvedMethod entry added for MemberNameLeak$Leak.callMe()V"); |
| output.shouldContain("ResolvedMethod entry found for MemberNameLeak$Leak.callMe()V"); |
| output.shouldContain("ResolvedMethod entry removed for MemberNameLeak$Leak.callMe()V"); |
| output.shouldHaveExitValue(0); |
| } |
| |
| public static void main(java.lang.String[] unused) throws Throwable { |
| test("-XX:+UseG1GC"); |
| test("-XX:+UseParallelGC"); |
| test("-XX:+UseSerialGC"); |
| test("-XX:+UseConcMarkSweepGC"); |
| } |
| } |