--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/runtime/MemberName/MemberNameLeak.java Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,74 @@
+/*
+ * 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");
+ }
+}