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