2 * Copyright (C) 2014, United States Government, as represented by the
3 * Administrator of the National Aeronautics and Space Administration.
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
10 * http://www.apache.org/licenses/LICENSE-2.0.
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.
18 package gov.nasa.jpf.search;
21 import gov.nasa.jpf.Config;
22 import gov.nasa.jpf.vm.VM;
26 * this is a straight execution pseudo-search - it doesn't search at
27 * all (i.e. it doesn't backtrack), but just behaves like a 'normal' VM,
28 * going forward() until there is no next state
30 * <2do> of course it doesn't quite behave like a normal VM, since it
31 * doesn't honor thread priorities yet (needs a special scheduler)
33 * <2do> it's not really clear to me how this differs from a 'PathSearch'
34 * other than using a different scheduler. Looks like there should be just one
36 * <2do> this needs to be updated & tested
39 public class Simulation extends Search {
41 public Simulation (Config config, VM vm) {
46 public void search () {
51 if (hasPropertyTermination()) {
55 notifySearchStarted();
60 if (currentError != null){
61 notifyPropertyViolated();
63 if (hasPropertyTermination()) {
70 } else { // no next state
72 // <2do> we could check for more things here. If the last insn wasn't
73 // the main return, or a System.exit() call, we could flag a JPFException
74 checkPropertyViolation();
78 notifySearchFinished();