public static final String INTERLOC = "INTERLOC";
+ public static final String PCLOC = "PCLOC";
+
public static final Descriptor GLOBALDESC = new NameDescriptor(GLOBALLOC);
public static final Descriptor TOPDESC = new NameDescriptor(TOPLOC);
// constructGlobalFlowGraph();
- System.exit(0);
-
constructHierarchyGraph();
debug_writeHierarchyDotFiles();
+ // calculate RETURNLOC,PCLOC
+ calculateExtraLocations();
+
simplifyHierarchyGraph();
debug_writeSimpleHierarchyDotFiles();
debug_writeSkeletonCombinationHierarchyDotFiles();
+ // System.exit(0);
+
buildLattice();
debug_writeLattices();
+ updateCompositeLocationAssignments();
+
generateMethodSummary();
System.exit(0);
// 2) construct lattices
- inferLattices();
-
+ // inferLattices();
// simplifyLattices();
-
// 3) check properties
- checkLattices();
+ // checkLattices();
// calculate RETURNLOC,PCLOC
calculateExtraLocations();
public void addMapCallerArgToCalleeParam(MethodInvokeNode min, NTuple<Descriptor> callerArg,
NTuple<Descriptor> calleeParam) {
- // System.out.println("min=" + min + " arg=" + callerArg + " param=" + calleeParam);
getMapCallerArgToCalleeParam(min).put(callerArg, calleeParam);
}
private void assignCompositeLocation() {
calculateGlobalValueFlowCompositeLocation();
translateCompositeLocationAssignmentToFlowGraph();
- _debug_printGraph();
}
private void translateCompositeLocationAssignmentToFlowGraph() {
-
MethodDescriptor methodEventLoopDesc = ssjava.getMethodContainingSSJavaLoop();
translateCompositeLocationAssignmentToFlowGraph(methodEventLoopDesc);
+ _debug_printGraph();
+ }
+
+ private void updateCompositeLocationAssignments() {
+
+ LinkedList<MethodDescriptor> methodDescList =
+ (LinkedList<MethodDescriptor>) toanalyze_methodDescList.clone();
+
+ while (!methodDescList.isEmpty()) {
+ MethodDescriptor md = methodDescList.removeLast();
+ GlobalFlowGraph globalFlowGraph = getSubGlobalFlowGraph(md);
+ FlowGraph flowGraph = getFlowGraph(md);
+ Set<FlowNode> nodeSet = flowGraph.getNodeSet();
+ for (Iterator iterator = nodeSet.iterator(); iterator.hasNext();) {
+ FlowNode node = (FlowNode) iterator.next();
+ if (node.getCompositeLocation() != null) {
+ CompositeLocation compLoc = node.getCompositeLocation();
+ CompositeLocation updatedCompLoc = updateCompositeLocation(compLoc);
+ node.setCompositeLocation(updatedCompLoc);
+ } else {
+ NTuple<Descriptor> descTuple = node.getDescTuple();
+ CompositeLocation compLoc = convertToCompositeLocation(md, descTuple);
+ node.setCompositeLocation(compLoc);
+ }
+ }
+
+ }
+
+ }
+
+ private CompositeLocation updateCompositeLocation(CompositeLocation compLoc) {
+ CompositeLocation updatedCompLoc = new CompositeLocation();
+ for (int i = 0; i < compLoc.getSize(); i++) {
+ Location loc = compLoc.get(i);
+ String nodeIdentifier = loc.getLocIdentifier();
+ Descriptor enclosingDesc = loc.getDescriptor();
+ LocationSummary locSummary = getLocationSummary(enclosingDesc);
+ String locName = locSummary.getLocationName(nodeIdentifier);
+ Location updatedLoc = new Location(enclosingDesc, locName);
+ updatedCompLoc.addLocation(updatedLoc);
+ }
+
+ return updatedCompLoc;
}
private void translateCompositeLocationAssignmentToFlowGraph(MethodDescriptor mdCaller) {
FlowGraph callerFlowGraph = getFlowGraph(mdCaller);
Map<Location, CompositeLocation> callerMapLocToCompLoc =
callerGlobalFlowGraph.getMapLocationToInferCompositeLocation();
+ System.out.println("---callerMapLocToCompLoc=" + callerMapLocToCompLoc);
Set<Location> methodLocSet = callerMapLocToCompLoc.keySet();
for (Iterator iterator = methodLocSet.iterator(); iterator.hasNext();) {
Location methodLoc = (Location) iterator.next();
Set<MethodDescriptor> calleeSet = new HashSet<MethodDescriptor>();
for (Iterator iterator = minSet.iterator(); iterator.hasNext();) {
MethodInvokeNode min = (MethodInvokeNode) iterator.next();
- // need to translate a composite location that is started with the base tuple of 'min'.
- translateMapLocationToInferCompositeLocationToCalleeGraph(callerGlobalFlowGraph, min);
+ // need to translate a composite location that is started with the base
+ // tuple of 'min'.
+ if (mapMethodInvokeNodeToBaseTuple.get(min) != null) {
+ // if mapMethodInvokeNodeToBaseTuple doesn't have a mapping
+ // it means that the corresponding callee method does not cause any
+ // flows
+ translateMapLocationToInferCompositeLocationToCalleeGraph(callerGlobalFlowGraph, min);
+ }
calleeSet.add(min.getMethod());
}
NTuple<Location> baseLocTuple =
translateToLocTuple(mdCaller, mapMethodInvokeNodeToBaseTuple.get(min));
- System.out.println("-translate caller infer composite loc to callee=" + mdCallee);
+ System.out.println("\n-translate caller infer composite loc to callee=" + mdCallee
+ + " baseLocTuple=" + baseLocTuple);
Set<Location> keySet = callerMapLocToCompLoc.keySet();
for (Iterator iterator = keySet.iterator(); iterator.hasNext();) {
Location key = (Location) iterator.next();
CompositeLocation callerCompLoc = callerMapLocToCompLoc.get(key);
- if (!key.getDescriptor().equals(mdCaller)
- && callerCompLoc.getTuple().startsWith(baseLocTuple)) {
+ if (!key.getDescriptor().equals(mdCaller)) {
+ System.out.println("--- caller key=" + key + " callerCompLoc=" + callerCompLoc);
+
+ // && callerCompLoc.getTuple().startsWith(baseLocTuple)) {
// need to translate to the callee side
- // System.out.println("need to translate callerCompLoc=" + callerCompLoc +
- // " with baseTuple="
- // + baseLocTuple);
+
// TODO
- CompositeLocation newCalleeCompLoc =
- translateCompositeLocationToCallee(callerCompLoc, baseLocTuple, mdCallee);
- calleeGlobalGraph.addMapLocationToInferCompositeLocation(key, newCalleeCompLoc);
- System.out.println("---callee loc=" + key + " newCalleeCompLoc=" + newCalleeCompLoc);
+ CompositeLocation newCalleeCompLoc;
+ if (callerCompLoc.getTuple().startsWith(baseLocTuple)) {
+ System.out.println("---need to translate callerCompLoc=" + callerCompLoc
+ + " with baseTuple=" + baseLocTuple);
+ newCalleeCompLoc =
+ translateCompositeLocationToCallee(callerCompLoc, baseLocTuple, mdCallee);
+
+ calleeGlobalGraph.addMapLocationToInferCompositeLocation(key, newCalleeCompLoc);
+ System.out.println("---callee loc=" + key + " newCalleeCompLoc=" + newCalleeCompLoc);
+ } else {
+ // newCalleeCompLoc = callerCompLoc.clone();
+ }
+
}
}
// If the location of an argument has a composite location
// need to assign a proper composite location to the corresponding callee parameter
- System.out.println("-translate arg composite location to callee param:");
+ System.out.println("\n-translate arg composite location to callee param. min="
+ + min.printNode(0));
Map<Integer, NTuple<Descriptor>> mapIdxToArgTuple = mapMethodInvokeNodeToArgIdxMap.get(min);
Set<Integer> idxSet = mapIdxToArgTuple.keySet();
for (Iterator iterator = idxSet.iterator(); iterator.hasNext();) {
}
NTuple<Descriptor> argTuple = mapIdxToArgTuple.get(idx);
+ if (argTuple.size() > 0) {
+ // check if an arg tuple has been already assigned to a composite location
+ NTuple<Location> argLocTuple = translateToLocTuple(mdCaller, argTuple);
+ Location argLocalLoc = argLocTuple.get(0);
- // check if an arg tuple has been already assigned to a composite location
- NTuple<Location> argLocTuple = translateToLocTuple(mdCaller, argTuple);
- Location argLocalLoc = argLocTuple.get(0);
+ // if (!isPrimitiveType(argTuple)) {
+ if (callerMapLocToCompLoc.containsKey(argLocalLoc)) {
- // if (!isPrimitiveType(argTuple)) {
- if (callerMapLocToCompLoc.containsKey(argLocalLoc)) {
+ CompositeLocation callerCompLoc = callerMapLocToCompLoc.get(argLocalLoc);
+ for (int i = 1; i < argLocTuple.size(); i++) {
+ callerCompLoc.addLocation(argLocTuple.get(i));
+ }
- CompositeLocation callerCompLoc = callerMapLocToCompLoc.get(argLocalLoc);
- for (int i = 1; i < argLocTuple.size(); i++) {
- callerCompLoc.addLocation(argLocTuple.get(i));
- }
+ if (callerCompLoc.getTuple().startsWith(baseLocTuple)) {
- if (callerCompLoc.getTuple().startsWith(baseLocTuple)) {
+ FlowNode calleeParamFlowNode = calleeFlowGraph.getParamFlowNode(idx);
+ NTuple<Descriptor> calleeParamDescTuple = calleeParamFlowNode.getDescTuple();
+ NTuple<Location> calleeParamLocTuple =
+ translateToLocTuple(mdCallee, calleeParamDescTuple);
- FlowNode calleeParamFlowNode = calleeFlowGraph.getParamFlowNode(idx);
- NTuple<Descriptor> calleeParamDescTuple = calleeParamFlowNode.getDescTuple();
- NTuple<Location> calleeParamLocTuple =
- translateToLocTuple(mdCallee, calleeParamDescTuple);
+ System.out.println("---need to translate callerCompLoc=" + callerCompLoc
+ + " with baseTuple=" + baseLocTuple + " calleeParamLocTuple="
+ + calleeParamLocTuple);
- CompositeLocation newCalleeCompLoc =
- translateCompositeLocationToCallee(callerCompLoc, baseLocTuple, mdCallee);
+ CompositeLocation newCalleeCompLoc =
+ translateCompositeLocationToCallee(callerCompLoc, baseLocTuple, mdCallee);
- calleeGlobalGraph.addMapLocationToInferCompositeLocation(calleeParamLocTuple.get(0),
- newCalleeCompLoc);
+ calleeGlobalGraph.addMapLocationToInferCompositeLocation(calleeParamLocTuple.get(0),
+ newCalleeCompLoc);
- System.out.println("###need to assign composite location to=" + calleeParamDescTuple
- + " with baseTuple=" + baseLocTuple);
- System.out.println("---newCalleeCompLoc=" + newCalleeCompLoc);
- }
+ System.out.println("---callee loc=" + calleeParamLocTuple.get(0)
+ + " newCalleeCompLoc=" + newCalleeCompLoc);
+ // System.out.println("###need to assign composite location to=" + calleeParamDescTuple
+ // + " with baseTuple=" + baseLocTuple);
+ }
+
+ }
}
}
CompositeLocation newCalleeCompLoc = new CompositeLocation();
- // replace the last element of the caller compLoc with the 'this' location of the callee
- for (int i = 0; i < baseLocTuple.size() - 1; i++) {
- newCalleeCompLoc.addLocation(baseLocTuple.get(i));
- }
-
Location calleeThisLoc = new Location(mdCallee, mdCallee.getThis());
newCalleeCompLoc.addLocation(calleeThisLoc);
+ // remove the base tuple from the caller
+ // ex; In the method invoation foo.bar.methodA(), the callee will have the composite location
+ // ,which is relative to the 'this' variable, <THIS,...>
for (int i = baseLocTuple.size(); i < callerCompLoc.getSize(); i++) {
newCalleeCompLoc.addLocation(callerCompLoc.get(i));
}
// DEBUG: write a global flow graph
MethodDescriptor mdContainingSSJavaLoop = ssjava.getMethodContainingSSJavaLoop();
- // FlowGraph globalFlowGraph = getSubGlobalFlowGraph(mdContainingSSJavaLoop);
+ // FlowGraph globalFlowGraph =
+ // getSubGlobalFlowGraph(mdContainingSSJavaLoop);
// System.out.println("GLOBAL NODE SET=" + globalFlowGraph.getNodeSet());
// assignCompositeLocation(globalFlowGraph);
// try {
MethodDescriptor methodDescEventLoop = ssjava.getMethodContainingSSJavaLoop();
GlobalFlowGraph globalFlowGraph = getSubGlobalFlowGraph(methodDescEventLoop);
- Set<NTuple<Location>> prefixSet = new HashSet<NTuple<Location>>();
+ Set<Location> calculatedPrefixSet = new HashSet<Location>();
Set<GlobalFlowNode> nodeSet = globalFlowGraph.getNodeSet();
next: for (Iterator iterator = nodeSet.iterator(); iterator.hasNext();) {
GlobalFlowNode node = (GlobalFlowNode) iterator.next();
- Set<GlobalFlowNode> incomingNodeSet = globalFlowGraph.getIncomingNodeSet(node);
+
+ Location prefixLoc = node.getLocTuple().get(0);
+
+ if (calculatedPrefixSet.contains(prefixLoc)) {
+ // the prefix loc has been already assigned to a composite location
+ continue;
+ }
+
+ calculatedPrefixSet.add(prefixLoc);
+
+ // Set<GlobalFlowNode> incomingNodeSet = globalFlowGraph.getIncomingNodeSet(node);
List<NTuple<Location>> prefixList = calculatePrefixList(globalFlowGraph, node);
- Set<GlobalFlowNode> reachNodeSet = globalFlowGraph.getReachableNodeSetFrom(node);
- // System.out.println("node=" + node + " inNodeSet=" + incomingNodeSet
- // + " reachableNodeSet=" + reachNodeSet);
+ Set<GlobalFlowNode> reachableNodeSet =
+ globalFlowGraph.getReachableNodeSetByPrefix(node.getLocTuple().get(0));
+ // Set<GlobalFlowNode> reachNodeSet = globalFlowGraph.getReachableNodeSetFrom(node);
+
+ // System.out.println("node=" + node + " prefixList=" + prefixList + " reachableNodeSet="
+ // + reachableNodeSet);
for (int i = 0; i < prefixList.size(); i++) {
NTuple<Location> curPrefix = prefixList.get(i);
Set<NTuple<Location>> reachableCommonPrefixSet = new HashSet<NTuple<Location>>();
- for (Iterator iterator2 = reachNodeSet.iterator(); iterator2.hasNext();) {
+ for (Iterator iterator2 = reachableNodeSet.iterator(); iterator2.hasNext();) {
GlobalFlowNode reachNode = (GlobalFlowNode) iterator2.next();
if (reachNode.getLocTuple().startsWith(curPrefix)) {
reachableCommonPrefixSet.add(reachNode.getLocTuple());
}
if (!reachableCommonPrefixSet.isEmpty()) {
- CompositeLocation newCompLoc = generateCompositeLocation(curPrefix);
- System.out.println("NEED TO ASSIGN COMP LOC TO " + node + " with prefix=" + curPrefix);
- System.out.println("- newCompLoc=" + newCompLoc);
- Location targetLocalLoc = node.getLocTuple().get(0);
- globalFlowGraph.addMapLocationToInferCompositeLocation(targetLocalLoc, newCompLoc);
+ MethodDescriptor curPrefixFirstElementMethodDesc =
+ (MethodDescriptor) curPrefix.get(0).getDescriptor();
+
+ MethodDescriptor nodePrefixLocFirstElementMethodDesc =
+ (MethodDescriptor) prefixLoc.getDescriptor();
+
+ if (curPrefixFirstElementMethodDesc.equals(nodePrefixLocFirstElementMethodDesc)
+ || isTransitivelyCalledFrom(nodePrefixLocFirstElementMethodDesc,
+ curPrefixFirstElementMethodDesc)) {
+
+ // TODO
+ // if (!node.getLocTuple().startsWith(curPrefix.get(0))) {
+
+ Location curPrefixLocalLoc = curPrefix.get(0);
+ if (globalFlowGraph.mapLocationToInferCompositeLocation.containsKey(curPrefixLocalLoc)) {
+ // in this case, the local variable of the current prefix has already got a composite
+ // location
+ // so we just ignore the current composite location.
+
+ // System.out.println("HERE WE DO NOT ASSIGN A COMPOSITE LOCATION TO =" + node
+ // + " DUE TO " + curPrefix);
+
+ continue next;
+ }
+
+ Location targetLocalLoc = node.getLocTuple().get(0);
+ // CompositeLocation curCompLoc = globalFlowGraph.getCompositeLocation(targetLocalLoc);
+ // if ((curPrefix.size() + 1) > curCompLoc.getSize()) {
+
+ CompositeLocation newCompLoc = generateCompositeLocation(curPrefix);
+ System.out.println("NEED TO ASSIGN COMP LOC TO " + node + " with prefix=" + curPrefix);
+ System.out.println("- newCompLoc=" + newCompLoc);
+ globalFlowGraph.addMapLocationToInferCompositeLocation(targetLocalLoc, newCompLoc);
+ // }
+
+ continue next;
+ // }
+
+ }
- continue next;
}
}
}
- // Set<GlobalFlowNode> inNodeSet = graph.getIncomingNodeSetWithPrefix(prefix);
+ // Set<GlobalFlowNode> inNodeSet =
+ // graph.getIncomingNodeSetWithPrefix(prefix);
// System.out.println("inNodeSet=" + inNodeSet + " from=" + node);
}
private List<NTuple<Location>> calculatePrefixList(GlobalFlowGraph graph, GlobalFlowNode node) {
- System.out.println("\n##### calculatePrefixList=" + node);
+ System.out.println("\n##### calculatePrefixList node=" + node);
- Set<GlobalFlowNode> incomingNodeSet = graph.getIncomingNodeSet(node);
+ MethodDescriptor md = graph.getMethodDescriptor();
+
+ Set<GlobalFlowNode> incomingNodeSetPrefix =
+ graph.getIncomingNodeSetByPrefix(node.getLocTuple().get(0));
+ // System.out.println("incomingNodeSetPrefix=" + incomingNodeSetPrefix);
+ //
+ // Set<GlobalFlowNode> reachableNodeSetPrefix =
+ // graph.getReachableNodeSetByPrefix(node.getLocTuple().get(0));
+ // System.out.println("reachableNodeSetPrefix=" + reachableNodeSetPrefix);
List<NTuple<Location>> prefixList = new ArrayList<NTuple<Location>>();
- for (Iterator iterator = incomingNodeSet.iterator(); iterator.hasNext();) {
+ for (Iterator iterator = incomingNodeSetPrefix.iterator(); iterator.hasNext();) {
GlobalFlowNode inNode = (GlobalFlowNode) iterator.next();
NTuple<Location> inNodeTuple = inNode.getLocTuple();
}
});
return prefixList;
+
+ // List<NTuple<Location>> prefixList = new ArrayList<NTuple<Location>>();
+ //
+ // for (Iterator iterator = incomingNodeSet.iterator(); iterator.hasNext();) {
+ // GlobalFlowNode inNode = (GlobalFlowNode) iterator.next();
+ // NTuple<Location> inNodeTuple = inNode.getLocTuple();
+ //
+ // for (int i = 1; i < inNodeTuple.size(); i++) {
+ // NTuple<Location> prefix = inNodeTuple.subList(0, i);
+ // if (!prefixList.contains(prefix)) {
+ // prefixList.add(prefix);
+ // }
+ // }
+ // }
+ //
+ // Collections.sort(prefixList, new Comparator<NTuple<Location>>() {
+ // public int compare(NTuple<Location> arg0, NTuple<Location> arg1) {
+ // int s0 = arg0.size();
+ // int s1 = arg1.size();
+ // if (s0 > s1) {
+ // return -1;
+ // } else if (s0 == s1) {
+ // return 0;
+ // } else {
+ // return 1;
+ // }
+ // }
+ // });
+ // return prefixList;
}
private GlobalFlowGraph constructSubGlobalFlowGraph(FlowGraph flowGraph) {
NTuple<Descriptor> srcDescTuple = edge.getInitTuple();
NTuple<Descriptor> dstDescTuple = edge.getEndTuple();
- // here only keep the first element(method location) of the descriptor tuple
+ // here only keep the first element(method location) of the descriptor
+ // tuple
NTuple<Location> srcLocTuple = translateToLocTuple(md, srcDescTuple);
// Location srcMethodLoc = srcLocTuple.get(0);
// Descriptor srcVarDesc = srcMethodLoc.getLocDescriptor();
- // // if (flowGraph.isParamDesc(srcVarDesc) && (!srcVarDesc.equals(md.getThis()))) {
+ // // if (flowGraph.isParamDesc(srcVarDesc) &&
+ // (!srcVarDesc.equals(md.getThis()))) {
// if (!srcVarDesc.equals(md.getThis())) {
// srcLocTuple = new NTuple<Location>();
// Location loc = new Location(md, srcVarDesc);
NTuple<Location> locTuple = new NTuple<Location>();
Descriptor enclosingDesc = md;
- System.out.println("md=" + md + " descTuple=" + descTuple);
+ // System.out.println("md=" + md + " descTuple=" + descTuple);
for (int i = 0; i < descTuple.size(); i++) {
Descriptor desc = descTuple.get(i);
private void propagateValueFlowsToCallerFromSubGlobalFlowGraph(MethodInvokeNode min,
MethodDescriptor mdCaller, MethodDescriptor possibleMdCallee) {
+ System.out.println("propagateValueFlowsToCallerFromSubGlobalFlowGraph=" + min.printNode(0)
+ + " by caller=" + mdCaller);
FlowGraph calleeFlowGraph = getFlowGraph(possibleMdCallee);
Map<Integer, NTuple<Descriptor>> mapIdxToArg = mapMethodInvokeNodeToArgIdxMap.get(min);
+ System.out.println("mapMethodInvokeNodeToArgIdxMap.get(min)="
+ + mapMethodInvokeNodeToArgIdxMap.get(min));
Set<Integer> keySet = mapIdxToArg.keySet();
for (Iterator iterator = keySet.iterator(); iterator.hasNext();) {
Integer idx = (Integer) iterator.next();
NTuple<Descriptor> argDescTuple = mapIdxToArg.get(idx);
- NTuple<Location> argLocTuple = translateToLocTuple(mdCaller, argDescTuple);
+ if (argDescTuple.size() > 0) {
+ NTuple<Location> argLocTuple = translateToLocTuple(mdCaller, argDescTuple);
+ NTuple<Descriptor> paramDescTuple = calleeFlowGraph.getParamFlowNode(idx).getDescTuple();
+ NTuple<Location> paramLocTuple = translateToLocTuple(possibleMdCallee, paramDescTuple);
+ addMapCallerArgToCalleeParam(min, argDescTuple, paramDescTuple);
+ }
- NTuple<Descriptor> paramDescTuple = calleeFlowGraph.getParamFlowNode(idx).getDescTuple();
- NTuple<Location> paramLocTuple = translateToLocTuple(possibleMdCallee, paramDescTuple);
- addMapCallerArgToCalleeParam(min, argDescTuple, paramDescTuple);
}
NTuple<Descriptor> baseTuple = mapMethodInvokeNodeToBaseTuple.get(min);
GlobalFlowGraph calleeSubGlobalGraph = getSubGlobalFlowGraph(possibleMdCallee);
Set<GlobalFlowNode> calleeNodeSet = calleeSubGlobalGraph.getNodeSet();
+ System.out.println("#calleeNodeSet=" + calleeNodeSet);
for (Iterator iterator = calleeNodeSet.iterator(); iterator.hasNext();) {
GlobalFlowNode calleeNode = (GlobalFlowNode) iterator.next();
addValueFlowFromCalleeNode(min, mdCaller, possibleMdCallee, calleeNode);
// NTuple<Location> paramLocTuple =
// translateToLocTuple(possibleMdCallee, paramNode.getCurrentDescTuple());
//
- // GlobalFlowNode globalParamNode = calleeSubGlobalGraph.getFlowNode(paramLocTuple);
+ // GlobalFlowNode globalParamNode =
+ // calleeSubGlobalGraph.getFlowNode(paramLocTuple);
//
- // NTuple<Descriptor> argTuple = mapMethodInvokeNodeToArgIdxMap.get(min).get(idx);
+ // NTuple<Descriptor> argTuple =
+ // mapMethodInvokeNodeToArgIdxMap.get(min).get(idx);
//
// NTuple<Location> argLocTuple = translateToLocTuple(mdCaller, argTuple);
//
- // System.out.println("argTupleSet=" + argLocTuple + " param=" + paramLocTuple);
- // // here, it adds all value flows reachable from the paramNode in the callee's flow graph
+ // System.out.println("argTupleSet=" + argLocTuple + " param=" +
+ // paramLocTuple);
+ // // here, it adds all value flows reachable from the paramNode in the
+ // callee's flow graph
//
- // addValueFlowsFromCalleeParam(mdCaller, argLocTuple, baseLocTuple, possibleMdCallee,
+ // addValueFlowsFromCalleeParam(mdCaller, argLocTuple, baseLocTuple,
+ // possibleMdCallee,
// globalParamNode);
// }
//
// // TODO
// // FlowGraph callerSubGlobalGraph = getSubGlobalFlowGraph(mdCaller);
- // // FlowGraph calleeSubGlobalGraph = getSubGlobalFlowGraph(possibleMdCallee);
+ // // FlowGraph calleeSubGlobalGraph =
+ // getSubGlobalFlowGraph(possibleMdCallee);
// //
// // int numParam = calleeSubGlobalGraph.getNumParameters();
// // for (int idx = 0; idx < numParam; idx++) {
// // FlowNode paramNode = calleeSubGlobalGraph.getParamFlowNode(idx);
- // // NTuple<Descriptor> argTuple = mapMethodInvokeNodeToArgIdxMap.get(min).get(idx);
- // // System.out.println("argTupleSet=" + argTuple + " param=" + paramNode);
- // // // here, it adds all value flows reachable from the paramNode in the callee's flow graph
- // // addValueFlowsFromCalleeParam(min, calleeSubGlobalGraph, paramNode, callerSubGlobalGraph,
+ // // NTuple<Descriptor> argTuple =
+ // mapMethodInvokeNodeToArgIdxMap.get(min).get(idx);
+ // // System.out.println("argTupleSet=" + argTuple + " param=" +
+ // paramNode);
+ // // // here, it adds all value flows reachable from the paramNode in the
+ // callee's flow graph
+ // // addValueFlowsFromCalleeParam(min, calleeSubGlobalGraph, paramNode,
+ // callerSubGlobalGraph,
// // argTuple, baseTuple);
// // }
GlobalFlowGraph calleeSubGlobalGraph = getSubGlobalFlowGraph(mdCallee);
GlobalFlowGraph callerSubGlobalGraph = getSubGlobalFlowGraph(mdCaller);
- NTuple<Location> srcNodeLocTuple =
+ NTuple<Location> callerSrcNodeLocTuple =
translateToCallerLocTuple(min, mdCallee, mdCaller, calleeSrcNode.getLocTuple());
- Set<GlobalFlowNode> outNodeSet = calleeSubGlobalGraph.getOutNodeSet(calleeSrcNode);
+ if (callerSrcNodeLocTuple != null) {
+ Set<GlobalFlowNode> outNodeSet = calleeSubGlobalGraph.getOutNodeSet(calleeSrcNode);
- for (Iterator iterator = outNodeSet.iterator(); iterator.hasNext();) {
- GlobalFlowNode outNode = (GlobalFlowNode) iterator.next();
- NTuple<Location> dstNodeLocTuple =
- translateToCallerLocTuple(min, mdCallee, mdCaller, outNode.getLocTuple());
- callerSubGlobalGraph.addValueFlowEdge(srcNodeLocTuple, dstNodeLocTuple);
+ for (Iterator iterator = outNodeSet.iterator(); iterator.hasNext();) {
+ GlobalFlowNode outNode = (GlobalFlowNode) iterator.next();
+ NTuple<Location> callerDstNodeLocTuple =
+ translateToCallerLocTuple(min, mdCallee, mdCaller, outNode.getLocTuple());
+ if (callerDstNodeLocTuple != null) {
+ callerSubGlobalGraph.addValueFlowEdge(callerSrcNodeLocTuple, callerDstNodeLocTuple);
+ }
+ }
}
}
private NTuple<Location> translateToCallerLocTuple(MethodInvokeNode min,
MethodDescriptor mdCallee, MethodDescriptor mdCaller, NTuple<Location> nodeLocTuple) {
+ // this method will return NULL if the corresponding argument is literal
+ // value.
+ // assumes that we don't need to propagate callee flows to the argument
+ // which is literal.
+
+ System.out.println("---translateToCallerLocTuple=" + min.printNode(0)
+ + " callee nodeLocTuple=" + nodeLocTuple);
FlowGraph calleeFlowGraph = getFlowGraph(mdCallee);
NTuple<Descriptor> nodeDescTuple = translateToDescTuple(nodeLocTuple);
-
if (calleeFlowGraph.isParameter(nodeDescTuple)) {
int paramIdx = calleeFlowGraph.getParamIdx(nodeDescTuple);
NTuple<Descriptor> argDescTuple = mapMethodInvokeNodeToArgIdxMap.get(min).get(paramIdx);
+ // System.out.println(" mapMethodInvokeNodeToArgIdxMap.get(min)="
+ // + mapMethodInvokeNodeToArgIdxMap.get(min));
+
+ if (argDescTuple.size() == 0) {
+ // argument is literal
+ return null;
+ }
NTuple<Location> argLocTuple = translateToLocTuple(mdCaller, argDescTuple);
NTuple<Location> callerLocTuple = new NTuple<Location>();
}
return callerLocTuple;
} else {
- return nodeLocTuple;
+ return nodeLocTuple.clone();
}
}
// curNodeLocTuple = translateToCaller(argLocTuple, curNodeLocTuple);
// }
//
- // Set<GlobalFlowNode> outNodeSet = calleeSubGlobalGraph.getOutNodeSet(calleeCurNode);
+ // Set<GlobalFlowNode> outNodeSet =
+ // calleeSubGlobalGraph.getOutNodeSet(calleeCurNode);
// for (Iterator iterator = outNodeSet.iterator(); iterator.hasNext();) {
// GlobalFlowNode outNode = (GlobalFlowNode) iterator.next();
//
// // destination node is started with 'parameter'
// // need to translate it in terms of the caller's a node
// srcDescTuple =
- // translateToCaller(min, calleeSubGlobalGraph.getParamIdx(srcDescTuple), srcDescTuple);
+ // translateToCaller(min, calleeSubGlobalGraph.getParamIdx(srcDescTuple),
+ // srcDescTuple);
// }
//
// }
//
- // Set<FlowEdge> edgeSet = calleeSubGlobalGraph.getOutEdgeSetStartingFrom(calleeSrcNode);
+ // Set<FlowEdge> edgeSet =
+ // calleeSubGlobalGraph.getOutEdgeSetStartingFrom(calleeSrcNode);
// for (Iterator iterator = edgeSet.iterator(); iterator.hasNext();) {
// FlowEdge flowEdge = (FlowEdge) iterator.next();
//
// // destination node is started with 'parameter'
// // need to translate it in terms of the caller's a node
// srcDescTuple =
- // translateToCaller(min, calleeSubGlobalGraph.getParamIdx(srcDescTuple), srcDescTuple);
+ // translateToCaller(min, calleeSubGlobalGraph.getParamIdx(srcDescTuple),
+ // srcDescTuple);
// }
//
// if (calleeSubGlobalGraph.isParameter(dstDescTuple)) {
// // destination node is started with 'parameter'
// // need to translate it in terms of the caller's a node
// dstDescTuple =
- // translateToCaller(min, calleeSubGlobalGraph.getParamIdx(dstDescTuple), dstDescTuple);
+ // translateToCaller(min, calleeSubGlobalGraph.getParamIdx(dstDescTuple),
+ // dstDescTuple);
// }
//
// callerSubGlobalGraph.addValueFlowEdge(srcDescTuple, dstDescTuple);
//
// if (!visited.contains(dstNode)) {
// visited.add(dstNode);
- // recurAddValueFlowsFromCalleeParam(min, calleeSubGlobalGraph, dstNode, callerSubGlobalGraph,
+ // recurAddValueFlowsFromCalleeParam(min, calleeSubGlobalGraph, dstNode,
+ // callerSubGlobalGraph,
// dstDescTuple, visited, baseTuple);
// }
//
MethodDescriptor mdCallee = calleeSubGlobalGraph.getMethodDescriptor();
- // Set<FlowEdge> edgeSet = calleeSubGlobalGraph.getOutEdgeSet(calleeSrcNode);
+ // Set<FlowEdge> edgeSet =
+ // calleeSubGlobalGraph.getOutEdgeSet(calleeSrcNode);
Set<FlowEdge> edgeSet = calleeSubGlobalGraph.getOutEdgeSetStartingFrom(calleeSrcNode);
for (Iterator iterator = edgeSet.iterator(); iterator.hasNext();) {
FlowEdge flowEdge = (FlowEdge) iterator.next();
FlowGraph flowGraph = getFlowGraph(md);
MethodSummary methodSummary = getMethodSummary(md);
- // construct a parameter mapping that maps a parameter descriptor to an inferred composite
+ // construct a parameter mapping that maps a parameter descriptor to an
+ // inferred composite
// location
for (int paramIdx = 0; paramIdx < flowGraph.getNumParameters(); paramIdx++) {
FlowNode flowNode = flowGraph.getParamFlowNode(paramIdx);
- NTuple<Descriptor> descTuple = flowNode.getDescTuple();
-
- CompositeLocation assignedCompLoc = flowNode.getCompositeLocation();
- CompositeLocation inferredCompLoc;
- if (assignedCompLoc != null) {
- inferredCompLoc = translateCompositeLocation(assignedCompLoc);
- } else {
- Descriptor locDesc = descTuple.get(0);
- Location loc = new Location(md, locDesc.getSymbol());
- loc.setLocDescriptor(locDesc);
- inferredCompLoc = new CompositeLocation(loc);
- }
+ CompositeLocation inferredCompLoc = flowNode.getCompositeLocation();
+ // NTuple<Descriptor> descTuple = flowNode.getDescTuple();
+ //
+ // CompositeLocation assignedCompLoc = flowNode.getCompositeLocation();
+ // CompositeLocation inferredCompLoc;
+ // if (assignedCompLoc != null) {
+ // inferredCompLoc = translateCompositeLocation(assignedCompLoc);
+ // } else {
+ // Descriptor locDesc = descTuple.get(0);
+ // Location loc = new Location(md, locDesc.getSymbol());
+ // loc.setLocDescriptor(locDesc);
+ // inferredCompLoc = new CompositeLocation(loc);
+ // }
System.out.println("-paramIdx=" + paramIdx + " infer=" + inferredCompLoc);
+ System.out.println("-flowNode inferLoc=" + flowNode.getCompositeLocation());
methodSummary.addMapParamIdxToInferLoc(paramIdx, inferredCompLoc);
}
}
+ private boolean hasOrderingRelation(NTuple<Location> locTuple1, NTuple<Location> locTuple2) {
+
+ int size = locTuple1.size() >= locTuple2.size() ? locTuple2.size() : locTuple1.size();
+
+ for (int idx = 0; idx < size; idx++) {
+ Location loc1 = locTuple1.get(idx);
+ Location loc2 = locTuple2.get(idx);
+
+ Descriptor desc1 = loc1.getDescriptor();
+ Descriptor desc2 = loc2.getDescriptor();
+
+ if (!desc1.equals(desc2)) {
+ throw new Error("Fail to compare " + locTuple1 + " and " + locTuple2);
+ }
+
+ Descriptor locDesc1 = loc1.getLocDescriptor();
+ Descriptor locDesc2 = loc2.getLocDescriptor();
+
+ HierarchyGraph hierarchyGraph = getHierarchyGraph(desc1);
+
+ HNode node1 = hierarchyGraph.getHNode(locDesc1);
+ HNode node2 = hierarchyGraph.getHNode(locDesc2);
+
+ System.out.println("---node1=" + node1 + " node2=" + node2);
+ System.out.println("---hierarchyGraph.getIncomingNodeSet(node2)="
+ + hierarchyGraph.getIncomingNodeSet(node2));
+
+ if (locDesc1.equals(locDesc2)) {
+ continue;
+ } else if (!hierarchyGraph.getIncomingNodeSet(node2).contains(node1)
+ && !hierarchyGraph.getIncomingNodeSet(node1).contains(node2)) {
+ return false;
+ } else {
+ return true;
+ }
+
+ }
+
+ return false;
+
+ }
+
+ private boolean isHigherThan(NTuple<Location> locTuple1, NTuple<Location> locTuple2) {
+
+ int size = locTuple1.size() >= locTuple2.size() ? locTuple2.size() : locTuple1.size();
+
+ for (int idx = 0; idx < size; idx++) {
+ Location loc1 = locTuple1.get(idx);
+ Location loc2 = locTuple2.get(idx);
+
+ Descriptor desc1 = loc1.getDescriptor();
+ Descriptor desc2 = loc2.getDescriptor();
+
+ if (!desc1.equals(desc2)) {
+ throw new Error("Fail to compare " + locTuple1 + " and " + locTuple2);
+ }
+
+ Descriptor locDesc1 = loc1.getLocDescriptor();
+ Descriptor locDesc2 = loc2.getLocDescriptor();
+
+ HierarchyGraph hierarchyGraph = getHierarchyGraph(desc1);
+
+ HNode node1 = hierarchyGraph.getHNode(locDesc1);
+ HNode node2 = hierarchyGraph.getHNode(locDesc2);
+
+ System.out.println("---node1=" + node1 + " node2=" + node2);
+ System.out.println("---hierarchyGraph.getIncomingNodeSet(node2)="
+ + hierarchyGraph.getIncomingNodeSet(node2));
+
+ if (locDesc1.equals(locDesc2)) {
+ continue;
+ } else if (hierarchyGraph.getIncomingNodeSet(node2).contains(node1)) {
+ return true;
+ } else {
+ return false;
+ }
+
+ }
+
+ return false;
+ }
+
private CompositeLocation translateCompositeLocation(CompositeLocation compLoc) {
CompositeLocation newCompLoc = new CompositeLocation();
addMapDescToSimpleLattice(desc, simpleLattice);
HierarchyGraph simpleHierarchyGraph = getSimpleHierarchyGraph(desc);
- System.out.println("## insertIntermediateNodesToStraightLine:"
+ System.out.println("\n## insertIntermediateNodesToStraightLine:"
+ simpleHierarchyGraph.getName());
SSJavaLattice<String> lattice =
buildLattice.insertIntermediateNodesToStraightLine(desc, simpleLattice);
// System.out.println("\nSSJAVA: Insering Combination Nodes:" + desc);
// HierarchyGraph skeletonGraph = getSkeletonHierarchyGraph(desc);
- // HierarchyGraph skeletonGraphWithCombinationNode = skeletonGraph.clone();
+ // HierarchyGraph skeletonGraphWithCombinationNode =
+ // skeletonGraph.clone();
// skeletonGraphWithCombinationNode.setName(desc + "_SC");
//
// HierarchyGraph simpleHierarchyGraph = getSimpleHierarchyGraph(desc);
// System.out.println("Identifying Combination Nodes:");
// skeletonGraphWithCombinationNode.insertCombinationNodesToGraph(simpleHierarchyGraph);
// skeletonGraphWithCombinationNode.simplifySkeletonCombinationHierarchyGraph();
- // mapDescriptorToCombineSkeletonHierarchyGraph.put(desc, skeletonGraphWithCombinationNode);
+ // mapDescriptorToCombineSkeletonHierarchyGraph.put(desc,
+ // skeletonGraphWithCombinationNode);
}
}
}
}
+ private void calculateExtraLocations2() {
+ LinkedList<MethodDescriptor> descriptorListToAnalyze = ssjava.getSortedDescriptors();
+ for (Iterator iterator = descriptorListToAnalyze.iterator(); iterator.hasNext();) {
+ MethodDescriptor md = (MethodDescriptor) iterator.next();
+ calculateExtraLocations(md);
+ }
+ }
+
private void setMethodLocInfo(MethodDescriptor md, MethodLocationInfo methodInfo) {
mapMethodDescToMethodLocationInfo.put(md, methodInfo);
}
private void calculateExtraLocations(MethodDescriptor md) {
// calcualte pcloc, returnloc,...
+ System.out.println("\nSSJAVA:Calculate extra locations: " + md);
+
+ SSJavaLattice<String> methodLattice = getMethodLattice(md);
+
+ MethodSummary methodSummary = getMethodSummary(md);
+
+ FlowGraph fg = getFlowGraph(md);
+ Set<FlowNode> nodeSet = fg.getNodeSet();
+
+ // for (Iterator iterator = nodeSet.iterator(); iterator.hasNext();) {
+ // FlowNode flowNode = (FlowNode) iterator.next();
+ // if (flowNode.isDeclaratonNode()) {
+ // CompositeLocation inferLoc = methodInfo.getInferLocation(flowNode.getDescTuple().get(0));
+ // String locIdentifier = inferLoc.get(0).getLocIdentifier();
+ // if (!methodLattice.containsKey(locIdentifier)) {
+ // methodLattice.put(locIdentifier);
+ // }
+ // }
+ // }
+ MethodLocationInfo methodInfo = getMethodLocationInfo(md);
+
+ Map<Integer, CompositeLocation> mapParamToLoc = methodSummary.getMapParamIdxToInferLoc();
+ Set<Integer> paramIdxSet = mapParamToLoc.keySet();
+
+ if (!ssjava.getMethodContainingSSJavaLoop().equals(md)) {
+ // calculate the initial program counter location
+ // PC location is higher than location types of parameters which has incoming flows.
+ String pcLocSymbol = "PCLOC";
+
+ Set<NTuple<Location>> paramLocTupleHavingInFlowSet = new HashSet<NTuple<Location>>();
+
+ int numParams = fg.getNumParameters();
+ for (int i = 0; i < numParams; i++) {
+ FlowNode paramFlowNode = fg.getParamFlowNode(i);
+
+ Descriptor prefix = paramFlowNode.getDescTuple().get(0);
+
+ // if (fg.getIncomingFlowNodeSet(paramFlowNode).size() > 0) {
+ if (fg.getIncomingNodeSetByPrefix(prefix).size() > 0) {
+ // parameter has in-value flows
+ NTuple<Descriptor> paramDescTuple = paramFlowNode.getCurrentDescTuple();
+ NTuple<Location> paramLocTuple = translateToLocTuple(md, paramDescTuple);
+
+ paramLocTupleHavingInFlowSet.add(paramLocTuple);
+ // CompositeLocation inferLoc = mapParamToLoc.get(paramIdx);
+ // paramInFlowSet.add(inferLoc);
+ }
+ }
+
+ System.out.println("paramLocTupleHavingInFlowSet=" + paramLocTupleHavingInFlowSet);
+
+ int numParamsWithIncomingValue = paramLocTupleHavingInFlowSet.size();
+
+ if (paramLocTupleHavingInFlowSet.size() > 0
+ && numParamsWithIncomingValue == fg.getNumParameters()) {
+ // If the PC loc is going to be higher than all paramters, we dont' need to do anything
+
+ // Generates a location in the method lattice that is higher than the
+ // paramLocTupleHavingInFlowSet
+ NTuple<Location> pcLocTuple = generateLocTupleHigherThan(md, paramLocTupleHavingInFlowSet);
+
+ int pcLocTupleIdx = pcLocTuple.size() - 1;
+ Location pcLoc = pcLocTuple.get(pcLocTupleIdx);
+ Descriptor pcDesc = pcLoc.getLocDescriptor();
+ Descriptor enclosingDesc = pcLocTuple.get(pcLocTupleIdx).getDescriptor();
+
+ HierarchyGraph hierarchyGraph = getHierarchyGraph(enclosingDesc);
+ HNode pcNode = hierarchyGraph.getHNode(pcDesc);
+ pcNode.setSkeleton(true);
+
+ for (Iterator iterator = paramLocTupleHavingInFlowSet.iterator(); iterator.hasNext();) {
+ NTuple<Location> paramLocTuple = (NTuple<Location>) iterator.next();
+ Descriptor lowerDesc = paramLocTuple.get(pcLocTupleIdx).getLocDescriptor();
+ hierarchyGraph.addEdge(pcDesc, lowerDesc);
+ }
+
+ }
+
+ }
+
+ // calculate a return location
+ // the return location type is lower than all parameters and location
+ // types of return values
+ if (!md.getReturnType().isVoid()) {
+ // first, generate the set of return value location types that starts
+ // with 'this' reference
+
+ Set<CompositeLocation> inferFieldReturnLocSet = new HashSet<CompositeLocation>();
+
+ Set<FlowNode> paramFlowNodeFlowingToReturnValueSet = getParamNodeFlowingToReturnValue(md);
+ Set<CompositeLocation> inferParamLocSet = new HashSet<CompositeLocation>();
+ for (Iterator iterator = paramFlowNodeFlowingToReturnValueSet.iterator(); iterator.hasNext();) {
+ FlowNode fn = (FlowNode) iterator.next();
+ CompositeLocation inferLoc =
+ generateInferredCompositeLocation(methodInfo, getFlowGraph(md).getLocationTuple(fn));
+ inferParamLocSet.add(inferLoc);
+ }
+
+ Set<FlowNode> returnNodeSet = fg.getReturnNodeSet();
+
+ skip: for (Iterator iterator = returnNodeSet.iterator(); iterator.hasNext();) {
+ FlowNode returnNode = (FlowNode) iterator.next();
+ CompositeLocation inferReturnLoc =
+ generateInferredCompositeLocation(methodInfo, fg.getLocationTuple(returnNode));
+ if (inferReturnLoc.get(0).getLocIdentifier().equals("this")) {
+ // if the location type of the return value matches "this" reference
+ // then, check whether this return value is equal to/lower than all
+ // of parameters that possibly flow into the return values
+ for (Iterator iterator2 = inferParamLocSet.iterator(); iterator2.hasNext();) {
+ CompositeLocation paramInferLoc = (CompositeLocation) iterator2.next();
+
+ if ((!paramInferLoc.equals(inferReturnLoc))
+ && !isGreaterThan(methodLattice, paramInferLoc, inferReturnLoc)) {
+ continue skip;
+ }
+ }
+ inferFieldReturnLocSet.add(inferReturnLoc);
+
+ }
+ }
+
+ if (inferFieldReturnLocSet.size() > 0) {
+
+ CompositeLocation returnLoc = getLowest(methodLattice, inferFieldReturnLocSet);
+ if (returnLoc == null) {
+ // in this case, assign <'this',bottom> to the RETURNLOC
+ returnLoc = new CompositeLocation(new Location(md, md.getThis().getSymbol()));
+ returnLoc.addLocation(new Location(md.getClassDesc(), getLattice(md.getClassDesc())
+ .getBottomItem()));
+ }
+ methodInfo.setReturnLoc(returnLoc);
+
+ } else {
+ String returnLocSymbol = "RETURNLOC";
+ CompositeLocation returnLocInferLoc =
+ new CompositeLocation(new Location(md, returnLocSymbol));
+ methodInfo.setReturnLoc(returnLocInferLoc);
+
+ for (Iterator iterator = paramIdxSet.iterator(); iterator.hasNext();) {
+ Integer paramIdx = (Integer) iterator.next();
+ CompositeLocation inferLoc = mapParamToLoc.get(paramIdx);
+ String paramLocLocalSymbol = inferLoc.get(0).getLocIdentifier();
+ if (!methodLattice.isGreaterThan(paramLocLocalSymbol, returnLocSymbol)) {
+ // TODO
+ // addRelationHigherToLower(methodLattice, methodInfo,
+ // paramLocLocalSymbol,
+ // returnLocSymbol);
+ }
+ }
+
+ for (Iterator iterator = returnNodeSet.iterator(); iterator.hasNext();) {
+ FlowNode returnNode = (FlowNode) iterator.next();
+ CompositeLocation inferLoc =
+ generateInferredCompositeLocation(methodInfo, fg.getLocationTuple(returnNode));
+ if (!isGreaterThan(methodLattice, inferLoc, returnLocInferLoc)) {
+ // TODO
+ // addRelation(methodLattice, methodInfo, inferLoc,
+ // returnLocInferLoc);
+ }
+ }
+
+ }
+
+ }
+ }
+
+ private NTuple<Location> generateLocTupleHigherThan(MethodDescriptor md,
+ Set<NTuple<Location>> paramLocTupleHavingInFlowSet) {
+
+ System.out.println("-generateLocTupleHigherThan=" + paramLocTupleHavingInFlowSet);
+
+ NTuple<Location> higherLocTuple = new NTuple<Location>();
+
+ VarDescriptor thisVarDesc = md.getThis();
+ // check if all paramter loc tuple is started with 'this' reference
+ boolean hasParamNotStartedWithThisRef = false;
+
+ int maxSize = 0;
+
+ Set<NTuple<Location>> paramLocTupleStartedWithThis = new HashSet<NTuple<Location>>();
+
+ for (Iterator iterator = paramLocTupleHavingInFlowSet.iterator(); iterator.hasNext();) {
+ NTuple<Location> paramLocTuple = (NTuple<Location>) iterator.next();
+ if (!paramLocTuple.get(0).getLocDescriptor().equals(thisVarDesc)) {
+ hasParamNotStartedWithThisRef = true;
+ } else if (paramLocTuple.size() > 1) {
+ paramLocTupleStartedWithThis.add(paramLocTuple);
+ if (maxSize < paramLocTuple.size()) {
+ maxSize = paramLocTuple.size();
+ }
+ }
+ }
+
+ Descriptor enclosingDesc = md;
+ if (hasParamNotStartedWithThisRef) {
+ // in this case, PCLOC will be the local location
+ } else {
+ // all parameter is started with 'this', so PCLOC will be set relative to the composite
+ // location started with 'this'.
+ for (int idx = 0; idx < maxSize - 1; idx++) {
+ Set<Descriptor> locDescSet = new HashSet<Descriptor>();
+ Location curLoc = null;
+ for (Iterator iterator = paramLocTupleHavingInFlowSet.iterator(); iterator.hasNext();) {
+ NTuple<Location> paramLocTuple = (NTuple<Location>) iterator.next();
+ curLoc = paramLocTuple.get(idx);
+ Descriptor locDesc = curLoc.getLocDescriptor();
+ locDescSet.add(locDesc);
+ }
+ System.out.println("locDescSet=" + locDescSet + " idx=" + idx);
+ if (locDescSet.size() != 1) {
+ break;
+ }
+ Location newLocElement = new Location(curLoc.getDescriptor(), curLoc.getLocDescriptor());
+ higherLocTuple.add(newLocElement);
+ enclosingDesc = getClassTypeDescriptor(curLoc.getLocDescriptor());
+ }
+
+ }
+
+ String pcLocIdentifier = PCLOC + (locSeed++);
+ NameDescriptor pcLocDesc = new NameDescriptor(pcLocIdentifier);
+ Location newLoc = new Location(enclosingDesc, pcLocDesc);
+ higherLocTuple.add(newLoc);
+
+ System.out.println("---higherLocTuple=" + higherLocTuple);
+
+ return higherLocTuple;
+
+ }
+
+ public ClassDescriptor getClassTypeDescriptor(Descriptor in) {
+
+ if (in instanceof VarDescriptor) {
+ return ((VarDescriptor) in).getType().getClassDesc();
+ } else {/* if (desc instanceof FieldDescriptor) { */
+ return ((FieldDescriptor) in).getType().getClassDesc();
+ }
+
+ }
+
+ private Set<NTuple<Location>> calculateHighestLocTupleSet(
+ Set<NTuple<Location>> paramLocTupleHavingInFlowSet) {
+
+ Set<NTuple<Location>> highestSet = new HashSet<NTuple<Location>>();
+
+ Iterator<NTuple<Location>> iterator = paramLocTupleHavingInFlowSet.iterator();
+ NTuple<Location> highest = iterator.next();
+
+ for (; iterator.hasNext();) {
+ NTuple<Location> curLocTuple = (NTuple<Location>) iterator.next();
+ if (isHigherThan(curLocTuple, highest)) {
+ System.out.println(curLocTuple + " is greater than " + highest);
+ highest = curLocTuple;
+ }
+ }
+
+ highestSet.add(highest);
+
+ MethodDescriptor md = (MethodDescriptor) highest.get(0).getDescriptor();
+ VarDescriptor thisVarDesc = md.getThis();
+
+ System.out.println("highest=" + highest);
+
+ for (Iterator<NTuple<Location>> iter = paramLocTupleHavingInFlowSet.iterator(); iter.hasNext();) {
+ NTuple<Location> curLocTuple = iter.next();
+
+ if (!curLocTuple.equals(highest) && !hasOrderingRelation(highest, curLocTuple)) {
+
+ System.out.println("add it to the highest set=" + curLocTuple);
+ highestSet.add(curLocTuple);
+
+ }
+ }
+
+ return highestSet;
+
+ }
+
+ private void calculateExtraLocations2(MethodDescriptor md) {
+ // calcualte pcloc, returnloc,...
+
SSJavaLattice<String> methodLattice = getMethodLattice(md);
MethodLocationInfo methodInfo = getMethodLocationInfo(md);
FlowGraph fg = getFlowGraph(md);
String paramLocLocalSymbol = inferLoc.get(0).getLocIdentifier();
if (!methodLattice.isGreaterThan(paramLocLocalSymbol, returnLocSymbol)) {
// TODO
- // addRelationHigherToLower(methodLattice, methodInfo, paramLocLocalSymbol,
+ // addRelationHigherToLower(methodLattice, methodInfo,
+ // paramLocLocalSymbol,
// returnLocSymbol);
}
}
generateInferredCompositeLocation(methodInfo, fg.getLocationTuple(returnNode));
if (!isGreaterThan(methodLattice, inferLoc, returnLocInferLoc)) {
// TODO
- // addRelation(methodLattice, methodInfo, inferLoc, returnLocInferLoc);
+ // addRelation(methodLattice, methodInfo, inferLoc,
+ // returnLocInferLoc);
}
}
// parameters
Set<FlowNode> localReachSet = calleeFlowGraph.getLocalReachFlowNodeSetFrom(paramNode1);
+ System.out.println("-param1=" + paramNode1 + " is higher than param2=" + paramNode2);
+ System.out.println("-- localReachSet from param1=" + localReachSet);
- if (localReachSet.contains(paramNode2)) {
+ if (arg1Tuple.size() > 0 && arg2Tuple.size() > 0 && localReachSet.contains(paramNode2)) {
// need to propagate an ordering relation s.t. arg1 is higher
// than arg2
- System.out.println("-param1=" + paramNode1 + " is higher than param2=" + paramNode2);
System.out
.println("-arg1Tuple=" + arg1Tuple + " is higher than arg2Tuple=" + arg2Tuple);
// graph
// TODO
- // also if a parameter is a composite location and is started with "this" reference,
- // need to make sure that the corresponding argument is higher than the translated location of
+ // also if a parameter is a composite location and is started with "this"
+ // reference,
+ // need to make sure that the corresponding argument is higher than the
+ // translated location of
// the parameter.
FlowGraph calleeFlowGraph = getFlowGraph(mdCallee);
// calculate the prefix of the argument
if (arg2Tuple.size() == 1 && arg2Tuple.get(0).equals(baseRef)) {
- // in this case, the callee flow causes a caller flow to the object whose method
+ // in this case, the callee flow causes a caller flow to the
+ // object whose method
// is invoked.
if (!paramNode1.getCurrentDescTuple().startsWith(mdCallee.getThis())) {
paramNode1);
if (param1Prefix != null && param1Prefix.startsWith(mdCallee.getThis())) {
- // in this case, we need to create a new edge 'this.FIELD'->'this'
- // but we couldn't... instead we assign a new composite location started
+ // in this case, we need to create a new edge
+ // 'this.FIELD'->'this'
+ // but we couldn't... instead we assign a new composite
+ // location started
// with 'this' reference to the corresponding parameter
CompositeLocation compLocForParam1 =
.println("set comp loc=" + compLocForParam1 + " to " + paramNode1);
paramNode1.setCompositeLocation(compLocForParam1);
- // then, we need to make sure that the corresponding argument in the caller
- // is required to be higher than or equal to the translated parameter
+ // then, we need to make sure that the corresponding
+ // argument in the caller
+ // is required to be higher than or equal to the
+ // translated parameter
// location
NTuple<Descriptor> translatedParamTuple =
}
} else if (arg1Tuple.size() == 1 && arg1Tuple.get(0).equals(baseRef)) {
- // in this case, the callee flow causes a caller flow originated from the object
+ // in this case, the callee flow causes a caller flow
+ // originated from the object
// whose
// method is invoked.
if (param2Prefix != null && param2Prefix.startsWith(mdCallee.getThis())) {
// in this case, we need to create a new edge 'this' ->
- // 'this.FIELD' but we couldn't... instead we assign the corresponding
- // parameter a new composite location started with 'this' reference
+ // 'this.FIELD' but we couldn't... instead we assign the
+ // corresponding
+ // parameter a new composite location started with
+ // 'this' reference
CompositeLocation compLocForParam2 =
generateCompositeLocation(mdCallee, param2Prefix);
} else if (curDescriptor instanceof NameDescriptor) {
// it is "GLOBAL LOC" case!
enclosingDescriptor = GLOBALDESC;
+ } else if (curDescriptor instanceof InterDescriptor) {
+ enclosingDescriptor = null;
} else {
enclosingDescriptor = ((FieldDescriptor) curDescriptor).getClassDescriptor();
}
}
- System.out.println("-convertToCompositeLocation from=" + tuple + " to " + compLoc);
-
return compLoc;
}
if (idx == 0) {
classDesc = ((VarDescriptor) desc).getType().getClassDesc();
} else {
- classDesc = ((FieldDescriptor) desc).getType().getClassDesc();
+ if (desc instanceof FieldDescriptor) {
+ classDesc = ((FieldDescriptor) desc).getType().getClassDesc();
+ } else {
+ // this case is that the local variable has a composite location assignment
+ // the following element after the composite location to the local variable
+ // has the enclosing descriptor of the local variable
+ Descriptor localDesc = srcNode.getDescTuple().get(0);
+ classDesc = ((VarDescriptor) localDesc).getType().getClassDesc();
+ }
}
-
extractFlowsBetweenFields(classDesc, srcNode, dstNode, idx + 1);
} else {
}
+ public boolean isTransitivelyCalledFrom(MethodDescriptor callee, MethodDescriptor caller) {
+ // if the callee is transitively invoked from the caller
+ // return true;
+
+ int callerIdx = toanalyze_methodDescList.indexOf(caller);
+ int calleeIdx = toanalyze_methodDescList.indexOf(callee);
+
+ if (callerIdx < calleeIdx) {
+ return true;
+ }
+
+ return false;
+
+ }
+
public void constructFlowGraph() {
System.out.println("");
analyzeMethodBody(md.getClassDesc(), md);
+ // System.out.println("##constructSubGlobalFlowGraph");
+ // GlobalFlowGraph subGlobalFlowGraph = constructSubGlobalFlowGraph(fg);
+ // mapMethodDescriptorToSubGlobalFlowGraph.put(md, subGlobalFlowGraph);
+ //
+ // // TODO
+ // System.out.println("##addValueFlowsFromCalleeSubGlobalFlowGraph");
+ // addValueFlowsFromCalleeSubGlobalFlowGraph(md, subGlobalFlowGraph);
+ // subGlobalFlowGraph.writeGraph("_SUBGLOBAL");
+ //
+ // propagateFlowsFromCalleesWithNoCompositeLocation(md);
+
+ }
+ }
+ // _debug_printGraph();
+
+ methodDescList = (LinkedList<MethodDescriptor>) toanalyze_methodDescList.clone();
+
+ while (!methodDescList.isEmpty()) {
+ MethodDescriptor md = methodDescList.removeLast();
+ if (state.SSJAVADEBUG) {
+ System.out.println();
+ System.out.println("SSJAVA: Constructing a flow graph2: " + md);
+
System.out.println("##constructSubGlobalFlowGraph");
- GlobalFlowGraph subGlobalFlowGraph = constructSubGlobalFlowGraph(fg);
+ GlobalFlowGraph subGlobalFlowGraph = constructSubGlobalFlowGraph(getFlowGraph(md));
mapMethodDescriptorToSubGlobalFlowGraph.put(md, subGlobalFlowGraph);
// TODO
subGlobalFlowGraph.writeGraph("_SUBGLOBAL");
propagateFlowsFromCalleesWithNoCompositeLocation(md);
- // assignCompositeLocation(md);
}
}
- // _debug_printGraph();
}
newImplicitTupleSet.addTupleSet(condTupleNode);
if (newImplicitTupleSet.size() > 1) {
- // need to create an intermediate node for the GLB of conditional locations & implicit flows
+ // need to create an intermediate node for the GLB of conditional
+ // locations & implicit flows
NTuple<Descriptor> interTuple = getFlowGraph(md).createIntermediateNode().getDescTuple();
for (Iterator<NTuple<Descriptor>> idxIter = newImplicitTupleSet.iterator(); idxIter.hasNext();) {
NTuple<Descriptor> tuple = idxIter.next();
FlowGraph fg = getFlowGraph(md);
// if (implicitFlowTupleSet.size() == 1
- // && fg.getFlowNode(implicitFlowTupleSet.iterator().next()).isIntermediate()) {
+ // &&
+ // fg.getFlowNode(implicitFlowTupleSet.iterator().next()).isIntermediate())
+ // {
//
- // // since there is already an intermediate node for the GLB of implicit flows
+ // // since there is already an intermediate node for the GLB of implicit
+ // flows
// // we don't need to create another intermediate node.
// // just re-use the intermediate node for implicit flows.
//
- // FlowNode meetNode = fg.getFlowNode(implicitFlowTupleSet.iterator().next());
+ // FlowNode meetNode =
+ // fg.getFlowNode(implicitFlowTupleSet.iterator().next());
//
// for (Iterator iterator = nodeSet.iterator(); iterator.hasNext();) {
- // NTuple<Descriptor> returnNodeTuple = (NTuple<Descriptor>) iterator.next();
+ // NTuple<Descriptor> returnNodeTuple = (NTuple<Descriptor>)
+ // iterator.next();
// fg.addValueFlowEdge(returnNodeTuple, meetNode.getDescTuple());
// }
//
newImplicitTupleSet.addTupleSet(condTupleNode);
if (newImplicitTupleSet.size() > 1) {
- // need to create an intermediate node for the GLB of conditional locations & implicit flows
+ // need to create an intermediate node for the GLB of conditional
+ // locations & implicit flows
NTuple<Descriptor> interTuple = getFlowGraph(md).createIntermediateNode().getDescTuple();
for (Iterator<NTuple<Descriptor>> idxIter = newImplicitTupleSet.iterator(); idxIter
.hasNext();) {
// ///////////
// System.out.println("condTupleNode="+condTupleNode);
- // NTuple<Descriptor> interTuple = getFlowGraph(md).createIntermediateNode().getDescTuple();
+ // NTuple<Descriptor> interTuple =
+ // getFlowGraph(md).createIntermediateNode().getDescTuple();
//
- // for (Iterator<NTuple<Descriptor>> idxIter = condTupleNode.iterator(); idxIter.hasNext();) {
+ // for (Iterator<NTuple<Descriptor>> idxIter = condTupleNode.iterator();
+ // idxIter.hasNext();) {
// NTuple<Descriptor> tuple = idxIter.next();
// addFlowGraphEdge(md, tuple, interTuple);
// }
- // for (Iterator<NTuple<Descriptor>> idxIter = implicitFlowTupleSet.iterator(); idxIter
+ // for (Iterator<NTuple<Descriptor>> idxIter =
+ // implicitFlowTupleSet.iterator(); idxIter
// .hasNext();) {
// NTuple<Descriptor> tuple = idxIter.next();
// addFlowGraphEdge(md, tuple, interTuple);
}
private Set<FlowNode> getParamNodeFlowingToReturnValue(MethodDescriptor md) {
+
+ if (!mapMethodDescToParamNodeFlowsToReturnValue.containsKey(md)) {
+ mapMethodDescToParamNodeFlowsToReturnValue.put(md, new HashSet<FlowNode>());
+ }
+
return mapMethodDescToParamNodeFlowsToReturnValue.get(md);
}
System.out.println("analyzeFlowMethodInvokeNode=" + min.printNode(0));
+ mapMethodInvokeNodeToArgIdxMap.put(min, new HashMap<Integer, NTuple<Descriptor>>());
+
if (nodeSet == null) {
nodeSet = new NodeTupleSet();
}
FlowGraph calleeFlowGraph = getFlowGraph(calleeMethodDesc);
Set<FlowNode> calleeReturnSet = calleeFlowGraph.getReturnNodeSet();
- System.out.println("#calleeReturnSet=" + calleeReturnSet);
-
if (min.getExpression() != null) {
NodeTupleSet baseNodeSet = new NodeTupleSet();
argTuple = new NTuple<Descriptor>();
}
- if (argTuple.size() != 0) {
- addArgIdxMap(min, idx, argTuple);
- }
+ addArgIdxMap(min, idx, argTuple);
+
FlowNode paramNode = calleeFlowGraph.getParamFlowNode(idx);
if (hasInFlowTo(calleeFlowGraph, paramNode, calleeReturnSet)
|| calleeMethodDesc.getModifiers().isNative()) {
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