1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
/*
* Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package p1;
import myloaders.MyDiffClassLoader;
import p2.c2;
public class c1ReadEdgeDiffLoader {
public c1ReadEdgeDiffLoader() {
// The goal is to establish a read edge between module m1x
// which is the module where p1.c1ReadEdgeDiffLoader is defined,
// and the unnamed module that defines p2.c2. This must be
// done in 2 steps:
//
// Step #1: Establish a read edge between m1x, where c1ReadEdgeDiffLoader
// is defined, and the System ClassLoader's unnamed module,
// where MyDiffClassLoader is defined. This read edge
// is needed before we can obtain MyDiffClassLoader.loader2's unnamed module.
//
// Step #2: Establish a read edge between m1x, where c1ReadEdgeDiffLoader
// is defined, and the MyDiffClassLoader.loader2's unnamed module,
// where p2.c2 will be defined.
// Step #1: read edge m1x -> System ClassLoader's unnamed module
Module m1x = c1ReadEdgeDiffLoader.class.getModule();
ClassLoader system_loader = ClassLoader.getSystemClassLoader();
Module unnamed_module_one = system_loader.getUnnamedModule();
m1x.addReads(unnamed_module_one);
// Step #2: read edge m1x -> MyDiffClassLoader.loader2's unnamed module
ClassLoader loader2 = MyDiffClassLoader.loader2;
Module unnamed_module_two = loader2.getUnnamedModule();
m1x.addReads(unnamed_module_two);
// Attempt access - access should succeed since m1x can read
// MyDiffClassLoader.loader2's unnamed module
p2.c2 c2_obj = new p2.c2();
c2_obj.method2();
}
}
|
