soot.jimple.toolkits.thread.mhp.findobject.MultiCalledMethods Maven / Gradle / Ivy
package soot.jimple.toolkits.thread.mhp.findobject;
/*-
* #%L
* Soot - a J*va Optimization Framework
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* Copyright (C) 1997 - 2018 Raja Vallée-Rai and others
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* 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.
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* 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
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*/
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;
import soot.Scene;
import soot.SootMethod;
import soot.jimple.toolkits.callgraph.CallGraph;
import soot.jimple.toolkits.thread.mhp.pegcallgraph.PegCallGraph;
import soot.toolkits.graph.CompleteUnitGraph;
import soot.toolkits.graph.UnitGraph;
import soot.toolkits.scalar.FlowSet;
/*
import soot.tagkit.*;
import soot.toolkits.scalar.*;
*/
// *** USE AT YOUR OWN RISK ***
// May Happen in Parallel (MHP) analysis by Lin Li.
// This code should be treated as beta-quality code.
// It was written in 2003, but not incorporated into Soot until 2006.
// As such, it may contain incorrect assumptions about the usage
// of certain Soot classes.
// Some portions of this MHP analysis have been quality-checked, and are
// now used by the Transactions toolkit.
//
// -Richard L. Halpert, 2006-11-30
public class MultiCalledMethods {
Set multiCalledMethods = new HashSet();
MultiCalledMethods(PegCallGraph pcg, Set mcm) {
multiCalledMethods = mcm;
byMCalledS0(pcg);
finder1(pcg);
finder2(pcg);
propagate(pcg);
}
private void byMCalledS0(PegCallGraph pcg) {
Iterator it = pcg.iterator();
while (it.hasNext()) {
SootMethod sm = (SootMethod) it.next();
UnitGraph graph = new CompleteUnitGraph(sm.getActiveBody());
CallGraph callGraph = Scene.v().getCallGraph();
MultiRunStatementsFinder finder = new MultiRunStatementsFinder(graph, sm, multiCalledMethods, callGraph);
FlowSet fs = finder.getMultiRunStatements();
}
}
private void propagate(PegCallGraph pcg) {
Set visited = new HashSet();
List reachable = new ArrayList();
reachable.addAll(multiCalledMethods);
while (reachable.size() >= 1) {
SootMethod popped = reachable.remove(0);
if (visited.contains(popped)) {
continue;
}
if (!multiCalledMethods.contains(popped)) {
multiCalledMethods.add(popped);
}
visited.add(popped);
Iterator succIt = pcg.getSuccsOf(popped).iterator();
while (succIt.hasNext()) {
Object succ = succIt.next();
reachable.add((SootMethod) succ);
}
}
}
// Use breadth first search to find methods are called more than once in call graph
private void finder1(PegCallGraph pcg) {
Set clinitMethods = pcg.getClinitMethods();
Iterator it = pcg.iterator();
while (it.hasNext()) {
Object head = it.next();
// breadth first scan
Set