1 /*
2 * Copyright (c) 2020, 2023, 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
27 *
28 * @run testng/othervm/native
29 * --enable-native-access=ALL-UNNAMED
30 * -Djdk.internal.foreign.DowncallLinker.USE_SPEC=false
31 * TestUpcallStructScope
32 * @run testng/othervm/native
33 * --enable-native-access=ALL-UNNAMED
34 * -Djdk.internal.foreign.DowncallLinker.USE_SPEC=true
35 * TestUpcallStructScope
36 */
37
38 import java.lang.foreign.*;
39
40 import org.testng.annotations.Test;
41
42 import java.lang.invoke.MethodHandle;
43 import java.lang.invoke.MethodHandles;
44 import java.lang.invoke.MethodType;
45 import java.util.concurrent.atomic.AtomicReference;
46 import java.util.function.Consumer;
47
48 import static org.testng.Assert.assertFalse;
49
50 public class TestUpcallStructScope extends NativeTestHelper {
51 static final MethodHandle MH_do_upcall;
52 static final MethodHandle MH_Consumer_accept;
53
54 static {
55 System.loadLibrary("TestUpcallStructScope");
56 MH_do_upcall = LINKER.downcallHandle(
57 findNativeOrThrow("do_upcall"),
58 FunctionDescriptor.ofVoid(C_POINTER, S_PDI_LAYOUT)
59 );
60
61 try {
62 MH_Consumer_accept = MethodHandles.publicLookup().findVirtual(Consumer.class, "accept",
63 MethodType.methodType(void.class, Object.class));
64 } catch (NoSuchMethodException | IllegalAccessException e) {
65 throw new RuntimeException(e);
66 }
67 }
68
69 private static MethodHandle methodHandle (Consumer<MemorySegment> callback) {
70 return MH_Consumer_accept.bindTo(callback).asType(MethodType.methodType(void.class, MemorySegment.class));
71 }
72
73 @Test
74 public void testUpcall() throws Throwable {
75 AtomicReference<MemorySegment> capturedSegment = new AtomicReference<>();
76 MethodHandle target = methodHandle(capturedSegment::set);
77 FunctionDescriptor upcallDesc = FunctionDescriptor.ofVoid(S_PDI_LAYOUT);
78 try (Arena arena = Arena.ofConfined()) {
79 MemorySegment upcallStub = LINKER.upcallStub(target, upcallDesc, arena);
80 MemorySegment argSegment = arena.allocate(S_PDI_LAYOUT);
81 MH_do_upcall.invoke(upcallStub, argSegment);
82 }
83
84 MemorySegment captured = capturedSegment.get();
85 assertFalse(captured.scope().isAlive());
86 }
87
88 }