Mercurial > hg > Members > kono > jpf-core
view src/main/gov/nasa/jpf/vm/OVStatics.java @ 28:7be90179bb3b
Provided support for double colon operator used for lamabda expressions. Fixed a bug related to generating names for funcation object classes (by supporting double colon operator, a new stragety needed to generate unique names for function objects. To achive that the bootstrap ids are incorporated into names). Finally modified the method that retrieves the SAM from functional interfaces.
author | nastaran <nastaran.shafiei@gmail.com> |
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date | Thu, 25 Jun 2015 13:20:50 -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 java.util.Iterator; import gov.nasa.jpf.Config; import gov.nasa.jpf.util.IntTable; import gov.nasa.jpf.util.ObjVector; /** * Statics implementation that uses a simple ObjVector as the underlying container. * * The ids used to retrieve ElementInfos are dense and search global, computation is based * on the assumption that each ClassLoader can only define one class per binary class name */ public class OVStatics implements Statics { static class OVMemento implements Memento<Statics> { ObjVector.Snapshot<ElementInfo> eiSnap; OVMemento (OVStatics statics){ statics.elementInfos.process( ElementInfo.storer); eiSnap = statics.elementInfos.getSnapshot(); } @Override public Statics restore(Statics inSitu) { OVStatics statics = (OVStatics) inSitu; statics.elementInfos.restore(eiSnap); statics.elementInfos.process( ElementInfo.restorer); return statics; } } protected ObjVector<ElementInfo> elementInfos; // search global class ids (for this ClassLoader only) // NOTE this is per instance so that each one is as dense as possible, but since // it is search global it does NOT have to be restored and we can copy the reference when cloning protected int nextId; protected IntTable<String> ids; //--- construction public OVStatics (Config conf) { elementInfos = new ObjVector<ElementInfo>(); nextId = 0; ids = new IntTable<String>(); } protected int computeId (ClassInfo ci) { String clsName = ci.getName(); IntTable.Entry<String> e = ids.get(clsName); if (e == null) { int id = nextId++; ids.put( clsName, id); return id; } else { return e.val; } } protected StaticElementInfo createStaticElementInfo (int id, ClassInfo ci, ThreadInfo ti, ElementInfo eiClsObj) { Fields f = ci.createStaticFields(); Monitor m = new Monitor(); StaticElementInfo ei = new StaticElementInfo( id, ci, f, m, ti, eiClsObj); ci.initializeStaticData(ei, ti); return ei; } @Override public StaticElementInfo newClass (ClassInfo ci, ThreadInfo ti, ElementInfo eiClsObj) { assert (eiClsObj != null); int id = computeId( ci); StaticElementInfo ei = createStaticElementInfo( id, ci, ti, eiClsObj); elementInfos.set(id, ei); return ei; } @Override public StaticElementInfo newStartupClass (ClassInfo ci, ThreadInfo ti) { int id = computeId( ci); StaticElementInfo ei = createStaticElementInfo( id, ci, ti, null); elementInfos.set(id, ei); return ei; } //--- accessors @Override public StaticElementInfo get(int id) { // the cast sucks, but otherwise we run into the Processor covariance problem return (StaticElementInfo)elementInfos.get(id); } @Override public StaticElementInfo getModifiable(int id) { StaticElementInfo ei = (StaticElementInfo)elementInfos.get(id); if (ei.isFrozen()) { ei = (StaticElementInfo)ei.deepClone(); // freshly created ElementInfos are not frozen, so we don't have to defreeze elementInfos.set(id, ei); } return ei; } //--- housekeeping @Override public void cleanUpDanglingReferences (Heap heap) { ThreadInfo ti = ThreadInfo.getCurrentThread(); int tid = ti.getId(); boolean isThreadTermination = ti.isTerminated(); for (ElementInfo e : this) { e.cleanUp( heap, isThreadTermination, tid); } } //--- state restoration @Override public Memento<Statics> getMemento(MementoFactory factory) { return factory.getMemento(this); } @Override public Memento<Statics> getMemento() { return new OVMemento(this); } @SuppressWarnings("rawtypes") @Override public Iterator<ElementInfo> iterator(){ return ((ObjVector)elementInfos).nonNullIterator(); } @Override public void markRoots(Heap heap) { for (StaticElementInfo ei : liveStatics()){ ei.markStaticRoot(heap); } } @SuppressWarnings("rawtypes") @Override public Iterable<StaticElementInfo> liveStatics() { return (Iterable)elementInfos.elements(); } @Override public int size() { return elementInfos.length(); } }