1 /*
 2  * Copyright (c) 2021, 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  * @test
26  * @library ../
27  * @requires ((os.arch == "amd64" | os.arch == "x86_64") & sun.arch.data.model == "64") | os.arch == "aarch64"
28  * @run testng/othervm --enable-native-access=ALL-UNNAMED TestMixedMallocFree
29  */
30 
31 import jdk.incubator.foreign.CLinker;
32 import jdk.incubator.foreign.FunctionDescriptor;
33 import jdk.incubator.foreign.MemoryAddress;
34 import jdk.incubator.foreign.MemorySegment;
35 import jdk.incubator.foreign.ResourceScope;
36 import jdk.incubator.foreign.SymbolLookup;
37 import org.testng.annotations.Test;
38 
39 import java.lang.invoke.MethodHandle;
40 
41 import static jdk.incubator.foreign.ValueLayout.JAVA_INT;
42 import static org.testng.Assert.assertEquals;
43 
44 public class TestMixedMallocFree extends NativeTestHelper {
45 
46     static final MethodHandle MH_my_malloc;
47 
48     static {
49         System.loadLibrary("Malloc");
50         SymbolLookup MALLOC = SymbolLookup.loaderLookup();
51 
52         MH_my_malloc = CLinker.systemCLinker().downcallHandle(
53             MALLOC.lookup("my_malloc").orElseThrow(),
54                 FunctionDescriptor.of(C_POINTER, C_LONG_LONG));
55     }
56 
57     @Test
58     public void testMalloc() throws Throwable {
59         MemoryAddress ma = (MemoryAddress) MH_my_malloc.invokeExact(4L);
60         MemorySegment seg = MemorySegment.ofAddressNative(ma, 4L, ResourceScope.newImplicitScope());
61         seg.set(JAVA_INT, 0, 42);
62         assertEquals(seg.get(JAVA_INT, 0), 42);
63         // Test if this free crashes the VM, which might be the case if we load the wrong default library
64         // and end up mixing two allocators together.
65         freeMemory(ma);
66     }
67 
68 }