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comparison src/tests/gov/nasa/jpf/test/mc/basic/JPF_gov_nasa_jpf_test_mc_basic_RestorerTest$X.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 package gov.nasa.jpf.test.mc.basic;
19
20 import gov.nasa.jpf.annotation.MJI;
21 import gov.nasa.jpf.vm.ClosedMemento;
22 import gov.nasa.jpf.vm.Instruction;
23 import gov.nasa.jpf.vm.MJIEnv;
24 import gov.nasa.jpf.vm.NativePeer;
25 import gov.nasa.jpf.vm.StackFrame;
26 import gov.nasa.jpf.vm.SystemState;
27 import gov.nasa.jpf.vm.ThreadInfo;
28
29 /**
30 * peer for the regression test for on-demand state restoration by means of
31 * ClosedMementos
32 */
33 public class JPF_gov_nasa_jpf_test_mc_basic_RestorerTest$X extends NativePeer {
34
35 static class InsnExecCount {
36 int count;
37 }
38
39 static class InsnCountRestorer implements ClosedMemento {
40 InsnExecCount insnAttr;
41 int count; // the value to restore
42
43 InsnCountRestorer (InsnExecCount insnAttr){
44 this.insnAttr = insnAttr;
45 this.count = insnAttr.count;
46
47 System.out.println("## storing: " + count);
48 }
49
50 @Override
51 public void restore(){
52 System.out.println("## restoring: " + count);
53 insnAttr.count = count;
54 }
55 }
56
57 @MJI
58 public void $init (MJIEnv env, int objref){
59 ThreadInfo ti = env.getThreadInfo();
60 StackFrame caller = ti.getCallerStackFrame();
61 Instruction insn = caller.getPC();
62
63 InsnExecCount a = insn.getAttr(InsnExecCount.class);
64 if (a == null){
65 a = new InsnExecCount();
66 insn.addAttr( a);
67 }
68
69 SystemState ss = env.getSystemState();
70 if (!ss.hasRestorer(a)){
71 env.getSystemState().putRestorer( a, new InsnCountRestorer(a));
72 }
73
74 a.count++;
75 env.setIntField(objref, "id", a.count);
76 }
77 }