Mercurial > hg > Members > kono > jpf-core
view src/main/gov/nasa/jpf/search/Simulation.java @ 0:61d41facf527
initial v8 import (history reset)
author | Peter Mehlitz <Peter.C.Mehlitz@nasa.gov> |
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date | Fri, 23 Jan 2015 10:14:01 -0800 |
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/* * Copyright (C) 2014, United States Government, as represented by the * Administrator of the National Aeronautics and Space Administration. * All rights reserved. * * The Java Pathfinder core (jpf-core) platform is licensed under the * Apache License, Version 2.0 (the "License"); you may not use this file except * in compliance with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0. * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package gov.nasa.jpf.search; import gov.nasa.jpf.Config; import gov.nasa.jpf.vm.VM; /** * this is a straight execution pseudo-search - it doesn't search at * all (i.e. it doesn't backtrack), but just behaves like a 'normal' VM, * going forward() until there is no next state * * <2do> of course it doesn't quite behave like a normal VM, since it * doesn't honor thread priorities yet (needs a special scheduler) * * <2do> it's not really clear to me how this differs from a 'PathSearch' * other than using a different scheduler. Looks like there should be just one * * <2do> this needs to be updated & tested * */ public class Simulation extends Search { public Simulation (Config config, VM vm) { super(config, vm); } @Override public void search () { int depth = 0; depth++; if (hasPropertyTermination()) { return; } notifySearchStarted(); while (!done) { if (forward()) { if (currentError != null){ notifyPropertyViolated(); if (hasPropertyTermination()) { return; } } depth++; } else { // no next state // <2do> we could check for more things here. If the last insn wasn't // the main return, or a System.exit() call, we could flag a JPFException checkPropertyViolation(); done = true; } } notifySearchFinished(); } }