Mercurial > hg > Members > kono > jpf-core

comparison src/tests/gov/nasa/jpf/test/mc/basic/OVHeapTest.java @ 0:61d41facf527

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initial v8 import (history reset)
author Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
date Fri, 23 Jan 2015 10:14:01 -0800
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1 /*
2 * Copyright (C) 2014, United States Government, as represented by the
3 * Administrator of the National Aeronautics and Space Administration.
4 * All rights reserved.
5 *
6 * The Java Pathfinder core (jpf-core) platform is licensed under the
7 * Apache License, Version 2.0 (the "License"); you may not use this file except
8 * in compliance with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0.
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19 package gov.nasa.jpf.test.mc.basic;
20
21 import org.junit.Test;
22
23 import gov.nasa.jpf.util.test.TestJPF;
24 import gov.nasa.jpf.vm.Verify;
25
26 /**
27 * unit test for OVHeap
28 */
29 public class OVHeapTest extends TestJPF {
30
31 static int getReferenceValue (Object o) {
32 int h = System.identityHashCode(o);
33 return h ^ 0xABCD; // revert the ABCD hash component
34 }
35
36 static void checkRef (String msg, String key, int ref) {
37 System.out.printf("%s ,object: %s, ref: %d", msg, key, ref);
38
39 int v = Verify.getValue(key);
40 if (v == Verify.NO_VALUE) {
41 Verify.putValue(key, ref);
42 System.out.println(" new");
43 } else {
44 if (v == ref) {
45 System.out.println(" seen");
46 } else {
47 fail("different reference values, had:" + v + ", new:" + ref);
48 }
49 }
50 }
51
52 static class X {
53 String id;
54
55 X (String id){
56 this.id = id;
57 }
58 }
59
60 static class Y extends X {
61 Y (String id){
62 super(id);
63 }
64 }
65
66 X allocX (String id) {
67 return new X(id);
68 }
69
70 @Test
71 public void testSGOIDs() {
72 if (verifyNoPropertyViolation("+vm.heap.class=.vm.OVHeap")) {
73 Thread t = new Thread() {
74 @Override
75 public void run() {
76 Class<?> cls = X.class;
77 checkRef("from T ", "X.class", getReferenceValue(cls));
78
79 X x1 = new X("t-x1");
80 checkRef("from T ", x1.id, getReferenceValue(x1));
81
82 Thread.yield(); // CG #3
83
84 Y y1 = new Y("t-y1");
85 checkRef("from T ", y1.id, getReferenceValue(y1));
86 }
87 };
88
89 t.start(); // CG #1
90
91 Class<?> clsY = Y.class;
92 checkRef("from M ", "Y.class", getReferenceValue(clsY));
93
94 Class<?> clsX = X.class;
95 checkRef("from M ", "X.class", getReferenceValue(clsX));
96
97 int n = Verify.getInt(1, 3); // CG #2
98 System.out.println("-- M next X[] arraysize = " + n);
99 X[] xs = new X[n];
100 for (int i=0; i<xs.length; i++) {
101 xs[i] = new X("xs-" + i);
102 checkRef("from M ", xs[i].id, getReferenceValue(xs[i]));
103 }
104
105 Y y1 = new Y("m-y1");
106 checkRef("from M ", y1.id, getReferenceValue(y1));
107
108 X x1 = new Y("m-x1");
109 checkRef("from M ", x1.id, getReferenceValue(x1));
110 }
111 }
112 }