Mercurial > hg > Members > kono > jpf-core
view src/main/gov/nasa/jpf/vm/Step.java @ 17:e15b03204dc7
added a @NoJPFExecution annotation, which sets a NoJPFExec system attr on marked
methods during class load time, which gets checked by ThreadInfo.enter(). Useful
to flag methods which have to be intercepted/cut off when executing classes
under JPF that can also be used outside. Especially useful to avoid the
recursive JPF problem that can be caused by tests (which mix classpath and
native_classpath). This currently throws a JPFException, but we could also turn
this into a AssertionError in the SUT so that we get the SUT stack trace
author | Peter Mehlitz <pcmehlitz@gmail.com> |
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date | Mon, 23 Mar 2015 12:54:20 -0700 |
parents | 61d41facf527 |
children |
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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.vm; import gov.nasa.jpf.util.Source; import java.util.WeakHashMap; /** * this corresponds to an executed instruction. Note that we can have a * potentially huge number of Steps, hence we want to save objects here * (e.g. Collection overhead) */ public class Step { private static WeakHashMap<Step, String> s_comments = new WeakHashMap<Step, String>(); // Not every Step gets a comment. So save memory and put comments in a global comment HashMap. Make this a WeakHashMap so that old Step objects can be GCed. private final Instruction insn; Step next; public Step (Instruction insn) { if (insn == null) throw new IllegalArgumentException("insn == null"); this.insn = insn; } public Step getNext() { return next; } public Instruction getInstruction() { return insn; } public void setComment (String s) { s_comments.put(this, s); } public String getComment () { return s_comments.get(this); } public String getLineString () { MethodInfo mi = insn.getMethodInfo(); if (mi != null) { Source source = Source.getSource(mi.getSourceFileName()); if (source != null) { int line = mi.getLineNumber(insn); if (line > 0) { return source.getLine(line); } } } return null; } public boolean sameSourceLocation (Step other){ if (other != null){ MethodInfo mi = insn.getMethodInfo(); MethodInfo miOther = other.insn.getMethodInfo(); if (mi == miOther){ return (mi.getLineNumber(insn) == miOther.getLineNumber(other.insn)); } } return false; } public String getLocationString() { MethodInfo mi = insn.getMethodInfo(); if (mi != null) { return mi.getSourceFileName() + ':' + mi.getLineNumber(insn); } return "?:?"; } @Override public String toString() { return getLocationString(); } }