GetUnsafeTest.java revision 12745:f068a4ffddd2 
1/*
2 * Copyright (c) 2012, 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 * @bug 7196190
28 * @summary Improve method of handling MethodHandles
29 *
30 * @run main/othervm/policy=jtreg.security.policy/secure=java.lang.SecurityManager GetUnsafeTest
31 */
32
33import java.lang.invoke.*;
34import java.lang.reflect.Method;
35import java.util.Arrays;
36
37public class GetUnsafeTest {
38    static final String NAME = "sun.misc.Unsafe";
39
40    private static boolean isTestFailed = false;
41
42    private static void fail() {
43        isTestFailed = true;
44        try { throw new Exception(); } catch (Throwable e) {
45            StackTraceElement frame = e.getStackTrace()[1];
46            System.out.printf("Failed at %s:%d\n", frame.getFileName(), frame.getLineNumber());
47        }
48    }
49
50    public static void main(String[] args) throws Throwable {
51        {
52            final MethodType mt = MethodType.methodType(Class.class, String.class);
53            final MethodHandle mh = MethodHandles.lookup()
54                    .findStatic(Class.class, "forName", mt);
55
56            try { Class.forName(NAME);                         fail(); } catch (Throwable e) {}
57
58            try { mh.invoke(NAME);                             fail(); } catch (Throwable e) {}
59            try { mh.bindTo(NAME).invoke();                    fail(); } catch (Throwable e) {}
60            try { mh.invokeWithArguments(Arrays.asList(NAME)); fail(); } catch (Throwable e) {}
61            try { mh.invokeWithArguments(NAME);                fail(); } catch (Throwable e) {}
62            try { Class cls = (Class) mh.invokeExact(NAME);    fail(); } catch (Throwable e) {}
63        }
64
65        {
66            final Method fnMethod = Class.class.getMethod("forName", String.class);
67            final MethodType mt = MethodType.methodType(Object.class, Object.class, Object[].class);
68            final MethodHandle mh = MethodHandles.lookup()
69                    .findVirtual(Method.class, "invoke", mt)
70                    .bindTo(fnMethod);
71
72            try { fnMethod.invoke(null, NAME); fail(); } catch (Throwable e) {}
73
74            try { mh.bindTo(null).bindTo(new Object[]{NAME}).invoke();             fail(); } catch (Throwable e) {}
75            try { mh.invoke(null, new Object[]{NAME});                             fail(); } catch (Throwable e) {}
76            try { mh.invokeWithArguments(null, new Object[]{NAME});                fail(); } catch (Throwable e) {}
77            try { mh.invokeWithArguments(Arrays.asList(null, new Object[]{NAME})); fail(); } catch (Throwable e) {}
78            try { Object obj = mh.invokeExact((Object) null, new Object[]{NAME});  fail(); } catch (Throwable e) {}
79        }
80
81        {
82            final Method fnMethod = Class.class.getMethod("forName", String.class);
83            final MethodType mt = MethodType.methodType(Object.class, Object.class, Object[].class);
84
85            final MethodHandle mh = MethodHandles.lookup().bind(fnMethod, "invoke", mt);
86
87            try { mh.bindTo(null).bindTo(new Object[]{NAME}).invoke();            fail(); } catch (Throwable e) {}
88            try { mh.invoke(null, new Object[]{NAME});                            fail(); } catch (Throwable e) {}
89            try { mh.invokeWithArguments(null, NAME);                             fail(); } catch (Throwable e) {}
90            try { mh.invokeWithArguments(Arrays.asList(null, NAME));              fail(); } catch (Throwable e) {}
91            try { Object obj = mh.invokeExact((Object) null, new Object[]{NAME}); fail(); } catch (Throwable e) {}
92        }
93
94        {
95            final Method fnMethod = Class.class.getMethod("forName", String.class);
96            final MethodHandle mh = MethodHandles.lookup().unreflect(fnMethod);
97
98            try { mh.bindTo(NAME).invoke();                    fail(); } catch (Throwable e) {}
99            try { mh.invoke(NAME);                             fail(); } catch (Throwable e) {}
100            try { mh.invokeWithArguments(NAME);                fail(); } catch (Throwable e) {}
101            try { mh.invokeWithArguments(Arrays.asList(NAME)); fail(); } catch (Throwable e) {}
102            try { Class cls = (Class) mh.invokeExact(NAME);    fail(); } catch (Throwable e) {}
103        }
104
105        if (!isTestFailed) {
106            System.out.println("TEST PASSED");
107        } else {
108            System.out.println("TEST FAILED");
109            System.exit(1);
110        }
111    }
112}
113