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 * @enablePreview
28 * @requires jdk.foreign.linker != "UNSUPPORTED"
29 *
30 * @run testng/othervm/native
31 * --enable-native-access=ALL-UNNAMED
32 * -Djdk.internal.foreign.DowncallLinker.USE_SPEC=false
33 * TestUpcallStructScope
34 * @run testng/othervm/native
35 * --enable-native-access=ALL-UNNAMED
36 * -Djdk.internal.foreign.DowncallLinker.USE_SPEC=true
37 * TestUpcallStructScope
38 */
39
40 import java.lang.foreign.*;
41
42 import org.testng.annotations.Test;
43
44 import java.lang.invoke.MethodHandle;
45 import java.lang.invoke.MethodHandles;
46 import java.lang.invoke.MethodType;
47 import java.util.concurrent.atomic.AtomicReference;
48 import java.util.function.Consumer;
49
50 import static org.testng.Assert.assertFalse;
51
52 public class TestUpcallStructScope extends NativeTestHelper {
53 static final MethodHandle MH_do_upcall;
54 static final Linker LINKER = Linker.nativeLinker();
55 static final MethodHandle MH_Consumer_accept;
56
57 // struct S_PDI { void* p0; double p1; int p2; };
58 static final MemoryLayout S_PDI_LAYOUT = MemoryLayout.structLayout(
59 C_POINTER.withName("p0"),
60 C_DOUBLE.withName("p1"),
61 C_INT.withName("p2"),
62 MemoryLayout.paddingLayout(4)
63 );
64
65 static {
66 System.loadLibrary("TestUpcallStructScope");
67 MH_do_upcall = LINKER.downcallHandle(
68 findNativeOrThrow("do_upcall"),
69 FunctionDescriptor.ofVoid(C_POINTER, S_PDI_LAYOUT)
70 );
71
72 try {
73 MH_Consumer_accept = MethodHandles.publicLookup().findVirtual(Consumer.class, "accept",
74 MethodType.methodType(void.class, Object.class));
75 } catch (NoSuchMethodException | IllegalAccessException e) {
76 throw new RuntimeException(e);
77 }
78 }
79
80 private static MethodHandle methodHandle (Consumer<MemorySegment> callback) {
81 return MH_Consumer_accept.bindTo(callback).asType(MethodType.methodType(void.class, MemorySegment.class));
82 }
83
84 @Test
85 public void testUpcall() throws Throwable {
86 AtomicReference<MemorySegment> capturedSegment = new AtomicReference<>();
87 MethodHandle target = methodHandle(capturedSegment::set);
88 FunctionDescriptor upcallDesc = FunctionDescriptor.ofVoid(S_PDI_LAYOUT);
89 try (Arena arena = Arena.ofConfined()) {
90 MemorySegment upcallStub = LINKER.upcallStub(target, upcallDesc, arena);
91 MemorySegment argSegment = arena.allocate(S_PDI_LAYOUT);
92 MH_do_upcall.invoke(upcallStub, argSegment);
93 }
94
95 MemorySegment captured = capturedSegment.get();
96 assertFalse(captured.scope().isAlive());
97 }
98
99 }