soot.jimple.toolkits.thread.synchronization.CriticalSectionVisibleEdgesPred Maven / Gradle / Ivy
package soot.jimple.toolkits.thread.synchronization;
/*-
* #%L
* Soot - a J*va Optimization Framework
* %%
* Copyright (C) 2003 Ondrej Lhotak
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 2.1 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Lesser Public License for more details.
*
* You should have received a copy of the GNU General Lesser Public
* License along with this program. If not, see
* .
* #L%
*/
import java.util.Collection;
import java.util.Iterator;
import soot.jimple.toolkits.callgraph.Edge;
import soot.jimple.toolkits.callgraph.EdgePredicate;
/**
* A predicate that accepts edges that are not part of the class library and do not have a source statement that falls inside
* a transaction.
*
* @author Richard L. Halpert
*/
public class CriticalSectionVisibleEdgesPred implements EdgePredicate {
Collection tns;
CriticalSection exemptTn;
public CriticalSectionVisibleEdgesPred(Collection tns) {
this.tns = tns;
}
public void setExemptTransaction(CriticalSection exemptTn) {
this.exemptTn = exemptTn;
}
/** Returns true iff the edge e is wanted. */
public boolean want(Edge e) {
String tgtMethod = e.tgt().toString();
String tgtClass = e.tgt().getDeclaringClass().toString();
String srcMethod = e.src().toString();
String srcClass = e.src().getDeclaringClass().toString();
// Remove Deep Library Calls
if (tgtClass.startsWith("sun.")) {
return false;
}
if (tgtClass.startsWith("com.sun.")) {
return false;
}
// Remove static initializers
if (tgtMethod.endsWith("void ()>")) {
return false;
}
// Remove calls to equals in the library
if ((tgtClass.startsWith("java.") || tgtClass.startsWith("javax."))
&& e.tgt().toString().endsWith("boolean equals(java.lang.Object)>")) {
return false;
}
// Remove anything in java.util
// these calls will be treated as a non-transitive RW to the receiving object
if (tgtClass.startsWith("java.util") || srcClass.startsWith("java.util")) {
return false;
}
// Remove anything in java.lang
// these calls will be treated as a non-transitive RW to the receiving object
if (tgtClass.startsWith("java.lang") || srcClass.startsWith("java.lang")) {
return false;
}
if (tgtClass.startsWith("java")) {
return false; // filter out the rest!
}
if (e.tgt().isSynchronized()) {
return false;
}
// I THINK THIS CHUNK IS JUST NOT NEEDED... TODO: REMOVE IT
// Remove Calls from within a transaction
// one transaction is exempt - so that we may analyze calls within it
if (tns != null) {
Iterator tnIt = tns.iterator();
while (tnIt.hasNext()) {
CriticalSection tn = tnIt.next();
if (tn != exemptTn && tn.units.contains(e.srcStmt())) // if this method call originates inside a transaction...
{
return false; // ignore it
}
}
}
return true;
}
}