diff a/test/hotspot/jtreg/serviceability/jvmti/valhalla/VMObjectAllocValue/VMObjectAllocValueTest.java b/test/hotspot/jtreg/serviceability/jvmti/valhalla/VMObjectAllocValue/VMObjectAllocValueTest.java --- /dev/null +++ b/test/hotspot/jtreg/serviceability/jvmti/valhalla/VMObjectAllocValue/VMObjectAllocValueTest.java @@ -0,0 +1,54 @@ +/* + * Copyright (c) 2026, 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 + * @summary Verifies that a VMObjectAlloc event is generated for a value object created using MethodHandle + * @requires vm.jvmti + * @enablePreview + * @run main/othervm/native -agentlib:VMObjectAllocValueTest VMObjectAllocValueTest + */ + +import java.lang.invoke.MethodHandle; +import java.lang.invoke.MethodHandles; +import java.lang.invoke.MethodType; + +public value class VMObjectAllocValueTest { + + private static native int getNumberOfAllocation(); + + public VMObjectAllocValueTest(String str) { + } + + public static void main(String[] args) throws Throwable { + + MethodHandles.Lookup publicLookup = MethodHandles.publicLookup(); + MethodType mt = MethodType.methodType(void.class, String.class); + MethodHandle mh = publicLookup.findConstructor(VMObjectAllocValueTest.class, mt); + mh.invoke("str"); // to trigger a VMObjectAlloc event invoke ctor not from Java + + if (getNumberOfAllocation() != 1) { + throw new Exception("Number of allocation != 1"); + } + } +}