1 /*
2 * Copyright (c) 2019, 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 * @modules jdk.incubator.foreign/jdk.incubator.foreign.unsafe
28 * jdk.incubator.foreign/jdk.internal.foreign
29 * jdk.incubator.foreign/jdk.internal.foreign.abi
30 * java.base/sun.security.action
31 * @build NativeTestHelper CallGeneratorHelper TestDowncall
32 *
33 * @run testng/othervm
34 * -Dforeign.restricted=permit
35 * TestDowncall
36 * @run testng/othervm
37 * -Dforeign.restricted=permit
38 * -Djdk.internal.foreign.ProgrammableInvoker.NO_SPEC=true
39 * TestDowncall
40 */
41
42 import jdk.incubator.foreign.CSupport;
43 import jdk.incubator.foreign.FunctionDescriptor;
44 import jdk.incubator.foreign.LibraryLookup;
45 import jdk.incubator.foreign.MemoryAddress;
46 import jdk.incubator.foreign.MemoryLayout;
47 import jdk.incubator.foreign.ForeignLinker;
48
49 import java.lang.invoke.MethodHandle;
50 import java.lang.invoke.MethodType;
51 import java.util.ArrayList;
52 import java.util.List;
53 import java.util.function.Consumer;
54
55 import org.testng.annotations.*;
56
57 public class TestDowncall extends CallGeneratorHelper {
58
59 static LibraryLookup lib = LibraryLookup.ofLibrary("TestDowncall");
60 static ForeignLinker abi = CSupport.getSystemLinker();
61
62
63 @Test(dataProvider="functions", dataProviderClass=CallGeneratorHelper.class)
64 public void testDowncall(String fName, Ret ret, List<ParamType> paramTypes, List<StructFieldType> fields) throws Throwable {
65 List<Consumer<Object>> checks = new ArrayList<>();
66 MemoryAddress addr = lib.lookup(fName);
67 MethodHandle mh = abi.downcallHandle(addr, methodType(ret, paramTypes, fields), function(ret, paramTypes, fields));
68 Object[] args = makeArgs(paramTypes, fields, checks);
69 mh = mh.asSpreader(Object[].class, paramTypes.size());
70 Object res = mh.invoke(args);
71 if (ret == Ret.NON_VOID) {
72 checks.forEach(c -> c.accept(res));
73 }
74 for (Object arg : args) {
75 cleanup(arg);
76 }
77 }
78
79 static MethodType methodType(Ret ret, List<ParamType> params, List<StructFieldType> fields) {
80 MethodType mt = ret == Ret.VOID ?
81 MethodType.methodType(void.class) : MethodType.methodType(paramCarrier(params.get(0).layout(fields)));
82 for (ParamType p : params) {
83 mt = mt.appendParameterTypes(paramCarrier(p.layout(fields)));
84 }
85 return mt;
86 }
87
88 static FunctionDescriptor function(Ret ret, List<ParamType> params, List<StructFieldType> fields) {
89 MemoryLayout[] paramLayouts = params.stream().map(p -> p.layout(fields)).toArray(MemoryLayout[]::new);
90 return ret == Ret.VOID ?
91 FunctionDescriptor.ofVoid(paramLayouts) :
92 FunctionDescriptor.of(paramLayouts[0], paramLayouts);
93 }
94
95 static Object[] makeArgs(List<ParamType> params, List<StructFieldType> fields, List<Consumer<Object>> checks) throws ReflectiveOperationException {
96 Object[] args = new Object[params.size()];
97 for (int i = 0 ; i < params.size() ; i++) {
98 args[i] = makeArg(params.get(i).layout(fields), checks, i == 0);
99 }
100 return args;
101 }
102 }