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annotate 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 /*
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2 * Copyright (C) 2014, United States Government, as represented by the
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Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
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3 * Administrator of the National Aeronautics and Space Administration.
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4 * All rights reserved.
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5 *
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6 * The Java Pathfinder core (jpf-core) platform is licensed under the
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7 * Apache License, Version 2.0 (the "License"); you may not use this file except
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8 * in compliance with the License. You may obtain a copy of the License at
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9 *
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10 * http://www.apache.org/licenses/LICENSE-2.0.
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11 *
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12 * Unless required by applicable law or agreed to in writing, software
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13 * distributed under the License is distributed on an "AS IS" BASIS,
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14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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15 * See the License for the specific language governing permissions and
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16 * limitations under the License.
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17 */
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18 package gov.nasa.jpf.test.mc.basic;
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19
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20 import gov.nasa.jpf.annotation.MJI;
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21 import gov.nasa.jpf.vm.ClosedMemento;
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22 import gov.nasa.jpf.vm.Instruction;
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23 import gov.nasa.jpf.vm.MJIEnv;
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24 import gov.nasa.jpf.vm.NativePeer;
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25 import gov.nasa.jpf.vm.StackFrame;
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26 import gov.nasa.jpf.vm.SystemState;
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27 import gov.nasa.jpf.vm.ThreadInfo;
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28
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29 /**
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30 * peer for the regression test for on-demand state restoration by means of
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31 * ClosedMementos
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32 */
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33 public class JPF_gov_nasa_jpf_test_mc_basic_RestorerTest$X extends NativePeer {
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34
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35 static class InsnExecCount {
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36 int count;
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37 }
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38
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39 static class InsnCountRestorer implements ClosedMemento {
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40 InsnExecCount insnAttr;
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41 int count; // the value to restore
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42
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43 InsnCountRestorer (InsnExecCount insnAttr){
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44 this.insnAttr = insnAttr;
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45 this.count = insnAttr.count;
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46
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47 System.out.println("## storing: " + count);
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48 }
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49
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50 @Override
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51 public void restore(){
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52 System.out.println("## restoring: " + count);
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53 insnAttr.count = count;
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54 }
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55 }
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56
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57 @MJI
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58 public void $init (MJIEnv env, int objref){
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59 ThreadInfo ti = env.getThreadInfo();
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60 StackFrame caller = ti.getCallerStackFrame();
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61 Instruction insn = caller.getPC();
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62
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63 InsnExecCount a = insn.getAttr(InsnExecCount.class);
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64 if (a == null){
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65 a = new InsnExecCount();
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66 insn.addAttr( a);
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67 }
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68
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69 SystemState ss = env.getSystemState();
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70 if (!ss.hasRestorer(a)){
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71 env.getSystemState().putRestorer( a, new InsnCountRestorer(a));
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72 }
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73
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74 a.count++;
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75 env.setIntField(objref, "id", a.count);
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76 }
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77 }