private Map<MethodInvokeNode, NTuple<Descriptor>> mapMethodInvokeNodeToBaseTuple;
+ private Map<MethodInvokeNode, Set<NTuple<Location>>> mapMethodInvokeNodeToPCLocTupleSet;
+
private Map<MethodDescriptor, MethodLocationInfo> mapMethodDescToMethodLocationInfo;
private Map<ClassDescriptor, LocationInfo> mapClassToLocationInfo;
public static final String GLOBALLOC = "GLOBALLOC";
- public static final String TOPLOC = "TOPLOC";
-
public static final String INTERLOC = "INTERLOC";
- public static final String PCLOC = "PCLOC";
+ public static final String PCLOC = "_PCLOC_";
- public static final String RLOC = "RLOC";
+ public static final String RLOC = "_RLOC_";
public static final Descriptor GLOBALDESC = new NameDescriptor(GLOBALLOC);
- public static final Descriptor TOPDESC = new NameDescriptor(TOPLOC);
+ public static final Descriptor TOPDESC = new NameDescriptor(SSJavaAnalysis.TOP);
+
+ public static final Descriptor BOTTOMDESC = new NameDescriptor(SSJavaAnalysis.BOTTOM);
public static final Descriptor RETURNLOC = new NameDescriptor(RLOC);
+ public static final Descriptor LITERALDESC = new NameDescriptor("LITERAL");
+
+ public static final HNode TOPHNODE = new HNode(TOPDESC);
+
+ public static final HNode BOTTOMHNODE = new HNode(BOTTOMDESC);
+
public static String newline = System.getProperty("line.separator");
LocationInfo curMethodInfo;
+ private boolean hasChanges = false;
+
boolean debug = true;
public static int locSeed = 0;
+ private Stack<String> arrayAccessNodeStack;
+
public LocationInference(SSJavaAnalysis ssjava, State state) {
this.ssjava = ssjava;
this.state = state;
this.mapMethodInvokeNodeToMapCallerArgToCalleeArg =
new HashMap<MethodInvokeNode, Map<NTuple<Descriptor>, NTuple<Descriptor>>>();
+ this.mapMethodInvokeNodeToPCLocTupleSet =
+ new HashMap<MethodInvokeNode, Set<NTuple<Location>>>();
+
+ this.arrayAccessNodeStack = new Stack<String>();
+
}
public void setupToAnalyze() {
public void inference() {
+ ssjava.init();
+
// construct value flow graph
constructFlowGraph();
- assignCompositeLocation();
+ constructGlobalFlowGraph();
+ // _debug_writeFlowGraph();
+ // System.exit(0);
+
+ do {
+ assignCompositeLocation();
+ updateFlowGraph();
+ calculateExtraLocations();
+ hasChanges = false;
+ addAdditionalOrderingConstraints();
+ System.out.println("&&&&&&&&&&&&&&&&&&&&&&has changes=" + hasChanges);
+ } while (hasChanges);
+
+ _debug_writeFlowGraph();
// System.exit(0);
debug_writeHierarchyDotFiles();
- // calculate RETURNLOC,PCLOC
- calculateExtraLocations();
-
simplifyHierarchyGraph();
debug_writeSimpleHierarchyDotFiles();
}
+ private void updateFlowGraph() {
+
+ LinkedList<MethodDescriptor> methodDescList =
+ (LinkedList<MethodDescriptor>) toanalyze_methodDescList.clone();
+
+ while (!methodDescList.isEmpty()) {
+ MethodDescriptor md = methodDescList.removeLast();
+ if (state.SSJAVADEBUG) {
+ System.out.println();
+ System.out.println("SSJAVA: Updating a flow graph: " + md);
+ propagateFlowsFromCalleesWithNoCompositeLocation(md);
+ }
+ }
+ }
+
public Map<NTuple<Descriptor>, NTuple<Descriptor>> getMapCallerArgToCalleeParam(
MethodInvokeNode min) {
System.out.println("\nSSJAVA: Translate composite location assignments to flow graphs:");
MethodDescriptor methodEventLoopDesc = ssjava.getMethodContainingSSJavaLoop();
translateCompositeLocationAssignmentToFlowGraph(methodEventLoopDesc);
- _debug_printGraph();
+ }
+
+ private void addAdditionalOrderingConstraints() {
+ System.out.println("\nSSJAVA: Add addtional ordering constriants:");
+ MethodDescriptor methodEventLoopDesc = ssjava.getMethodContainingSSJavaLoop();
+ addAddtionalOrderingConstraints(methodEventLoopDesc);
}
private void updateCompositeLocationAssignments() {
System.out.println("---updatedCompLoc1=" + updatedCompLoc);
} else {
NTuple<Descriptor> descTuple = node.getDescTuple();
+ System.out.println("update desc=" + descTuple);
CompositeLocation compLoc = convertToCompositeLocation(md, descTuple);
compLoc = updateCompositeLocation(compLoc);
node.setCompositeLocation(compLoc);
String locName;
if (!enclosingDesc.equals(GLOBALDESC)) {
LocationSummary locSummary = getLocationSummary(enclosingDesc);
- HierarchyGraph hierarchyGraph = getSimpleHierarchyGraph(enclosingDesc);
- if (hierarchyGraph != null) {
-
- HNode curNode = hierarchyGraph.getCurrentHNode(nodeIdentifier);
+ HierarchyGraph scGraph = getSkeletonCombinationHierarchyGraph(enclosingDesc);
+ if (scGraph != null) {
+ HNode curNode = scGraph.getCurrentHNode(nodeIdentifier);
if (curNode != null) {
nodeIdentifier = curNode.getName();
}
private void translateCompositeLocationAssignmentToFlowGraph(MethodDescriptor mdCaller) {
+ System.out.println("\n\n###translateCompositeLocationAssignmentToFlowGraph mdCaller="
+ + mdCaller);
+
// First, assign a composite location to a node in the flow graph
GlobalFlowGraph callerGlobalFlowGraph = getSubGlobalFlowGraph(mdCaller);
FlowGraph callerFlowGraph = getFlowGraph(mdCaller);
Map<Location, CompositeLocation> callerMapLocToCompLoc =
callerGlobalFlowGraph.getMapLocationToInferCompositeLocation();
+
Set<Location> methodLocSet = callerMapLocToCompLoc.keySet();
for (Iterator iterator = methodLocSet.iterator(); iterator.hasNext();) {
Location methodLoc = (Location) iterator.next();
// need to translate a composite location that is started with the base
// tuple of 'min'.
translateMapLocationToInferCompositeLocationToCalleeGraph(callerGlobalFlowGraph, min);
- calleeSet.add(min.getMethod());
+ MethodDescriptor mdCallee = min.getMethod();
+ calleeSet.add(mdCallee);
+
+ FlowGraph calleeFlowGraph = getFlowGraph(mdCallee);
+
+ NTuple<Descriptor> methodInvokeBaseDescTuple = mapMethodInvokeNodeToBaseTuple.get(min);
+ NTuple<Location> methodInvokeBaseLocTuple = null;
+ if (methodInvokeBaseDescTuple != null) {
+ methodInvokeBaseLocTuple = translateToLocTuple(mdCaller, methodInvokeBaseDescTuple);
+ }
+
+ // ////////////////
+ // ////////////////
+
+ // 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. min="
+ // + min.printNode(0));
+ Map<Integer, NTuple<Descriptor>> mapIdxToArgTuple = mapMethodInvokeNodeToArgIdxMap.get(min);
+ Set<Integer> idxSet = mapIdxToArgTuple.keySet();
+ for (Iterator iterator2 = idxSet.iterator(); iterator2.hasNext();) {
+ Integer idx = (Integer) iterator2.next();
+
+ if (idx == 0 && !min.getMethod().isStatic()) {
+ continue;
+ }
+
+ 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);
+
+ // if (!isPrimitiveType(argTuple)) {
+ if (callerMapLocToCompLoc.containsKey(argLocalLoc)) {
+
+ CompositeLocation argLocalCompositeLocation = callerMapLocToCompLoc.get(argLocalLoc);
+ CompositeLocation argCompLoc = argLocalCompositeLocation.clone();
+ for (int i = 1; i < argLocTuple.size(); i++) {
+ argCompLoc.addLocation(argLocTuple.get(i));
+ }
+
+ FlowNode calleeParamFlowNode = calleeFlowGraph.getParamFlowNode(idx);
+
+ System.out
+ .println("----- argLocTuple=" + argLocTuple + " argLocalLoc=+" + argLocalLoc);
+ System.out.println("-------need to translate argCompLoc=" + argCompLoc
+ + " with baseTuple=" + methodInvokeBaseLocTuple + " calleeParamLocTuple="
+ + calleeParamFlowNode);
+
+ CompositeLocation paramCompLoc = translateArgCompLocToParamCompLoc(min, argCompLoc);
+ calleeParamFlowNode.setCompositeLocation(paramCompLoc);
+
+ // if (baseLocTuple != null && callerCompLoc.getTuple().startsWith(baseLocTuple)) {
+ //
+ // FlowNode calleeParamFlowNode = calleeFlowGraph.getParamFlowNode(idx);
+ // NTuple<Descriptor> calleeParamDescTuple = calleeParamFlowNode.getDescTuple();
+ // NTuple<Location> calleeParamLocTuple
+ // =###translateCompositeLocationAssignmentToFlowGraph mdCaller=public static void
+ // huffcodetab.huffman_decoder(int htIdx, int x, BitReserve br)
+
+ // translateToLocTuple(mdCallee, calleeParamDescTuple);
+ //
+ // System.out.println("---need to translate callerCompLoc=" + callerCompLoc
+ // + " with baseTuple=" + baseLocTuple + " calleeParamLocTuple="
+ // + calleeParamLocTuple);
+ //
+ // CompositeLocation newCalleeCompLoc =
+ // translateCompositeLocationToCallee(callerCompLoc, baseLocTuple, mdCallee);
+ //
+ // calleeGlobalGraph.addMapLocationToInferCompositeLocation(calleeParamLocTuple.get(0),
+ // newCalleeCompLoc);
+ //
+ // System.out.println("---callee loc=" + calleeParamLocTuple.get(0)
+ // + " newCalleeCompLoc=" + newCalleeCompLoc);
+ //
+ // // System.out.println("###need to assign composite location to=" +
+ // // calleeParamDescTuple
+ // // + " with baseTuple=" + baseLocTuple);
+ // }
+
+ }
+ }
+ }
}
+ // ////////////////
+ // ////////////////
for (Iterator iterator = calleeSet.iterator(); iterator.hasNext();) {
MethodDescriptor callee = (MethodDescriptor) iterator.next();
translateCompositeLocationAssignmentToFlowGraph(callee);
}
+ for (Iterator iterator = minSet.iterator(); iterator.hasNext();) {
+ MethodInvokeNode min = (MethodInvokeNode) iterator.next();
+ // add an additional ordering constraint
+ // if the first element of a parameter composite location matches 'this' reference,
+ // the corresponding argument in the caller is required to be higher than the translated
+ // parameter location in the caller lattice
+ // TODO
+ // addOrderingConstraintFromCompLocParamToArg(mdCaller, min);
+ }
+
+ }
+
+ private CompositeLocation translateArgCompLocToParamCompLoc(MethodInvokeNode min,
+ CompositeLocation argCompLoc) {
+
+ System.out.println("--------translateArgCompLocToParamCompLoc argCompLoc=" + argCompLoc);
+ MethodDescriptor mdCallee = min.getMethod();
+ FlowGraph calleeFlowGraph = getFlowGraph(mdCallee);
+
+ NTuple<Location> argLocTuple = argCompLoc.getTuple();
+ Location argLocalLoc = argLocTuple.get(0);
+
+ Map<Integer, NTuple<Descriptor>> mapIdxToArgTuple = mapMethodInvokeNodeToArgIdxMap.get(min);
+ Set<Integer> idxSet = mapIdxToArgTuple.keySet();
+ for (Iterator iterator2 = idxSet.iterator(); iterator2.hasNext();) {
+ Integer idx = (Integer) iterator2.next();
+
+ if (idx == 0 && !min.getMethod().isStatic()) {
+ continue;
+ }
+
+ NTuple<Descriptor> argTuple = mapIdxToArgTuple.get(idx);
+ if (argTuple.size() > 0 && argTuple.get(0).equals(argLocalLoc.getLocDescriptor())) {
+ // it matches with the current argument composite location
+ // so what is the corresponding parameter local descriptor?
+ FlowNode paramNode = calleeFlowGraph.getParamFlowNode(idx);
+ System.out.println("----------found paramNode=" + paramNode);
+ NTuple<Descriptor> paramDescTuple = paramNode.getCurrentDescTuple();
+
+ NTuple<Location> newParamTupleFromArgTuple = translateToLocTuple(mdCallee, paramDescTuple);
+ for (int i = 1; i < argLocTuple.size(); i++) {
+ newParamTupleFromArgTuple.add(argLocTuple.get(i));
+ }
+
+ System.out.println("-----------newParamTuple=" + newParamTupleFromArgTuple);
+ return new CompositeLocation(newParamTupleFromArgTuple);
+
+ }
+ }
+ return null;
+ }
+
+ private void addAddtionalOrderingConstraints(MethodDescriptor mdCaller) {
+
+ // First, assign a composite location to a node in the flow graph
+ GlobalFlowGraph callerGlobalFlowGraph = getSubGlobalFlowGraph(mdCaller);
+
+ FlowGraph callerFlowGraph = getFlowGraph(mdCaller);
+ Map<Location, CompositeLocation> callerMapLocToCompLoc =
+ callerGlobalFlowGraph.getMapLocationToInferCompositeLocation();
+ Set<Location> methodLocSet = callerMapLocToCompLoc.keySet();
+
+ Set<MethodInvokeNode> minSet = mapMethodDescriptorToMethodInvokeNodeSet.get(mdCaller);
+
+ Set<MethodDescriptor> calleeSet = new HashSet<MethodDescriptor>();
+ for (Iterator iterator = minSet.iterator(); iterator.hasNext();) {
+ MethodInvokeNode min = (MethodInvokeNode) iterator.next();
+ MethodDescriptor mdCallee = min.getMethod();
+ calleeSet.add(mdCallee);
+
+ //
+ // add an additional ordering constraint
+ // if the first element of a parameter composite location matches 'this' reference,
+ // the corresponding argument in the caller is required to be higher than the translated
+ // parameter location in the caller lattice
+ // TODO
+ // addOrderingConstraintFromCompLocParamToArg(mdCaller, min);
+
+ //
+ // update return flow nodes in the caller
+ CompositeLocation returnLoc = getMethodSummary(mdCallee).getRETURNLoc();
+
+ System.out.println("### min=" + min.printNode(0) + " returnLoc=" + returnLoc);
+ if (returnLoc != null && returnLoc.get(0).getLocDescriptor().equals(mdCallee.getThis())
+ && returnLoc.getSize() > 1) {
+ System.out.println("###RETURN COMP LOC=" + returnLoc);
+ NTuple<Location> returnLocTuple = returnLoc.getTuple();
+ NTuple<Descriptor> baseTuple = mapMethodInvokeNodeToBaseTuple.get(min);
+ NTuple<Descriptor> newReturnTuple = baseTuple.clone();
+ for (int i = 1; i < returnLocTuple.size(); i++) {
+ newReturnTuple.add(returnLocTuple.get(i).getLocDescriptor());
+ }
+ System.out.println("###NEW RETURN TUPLE FOR CALLER=" + newReturnTuple);
+ callerFlowGraph.getFlowReturnNode(min).setNewTuple(newReturnTuple);
+ }
+
+ }
+
+ for (Iterator iterator = calleeSet.iterator(); iterator.hasNext();) {
+ MethodDescriptor callee = (MethodDescriptor) iterator.next();
+ addAddtionalOrderingConstraints(callee);
+ }
+
+ }
+
+ private void addOrderingConstraintFromCompLocParamToArg(MethodDescriptor mdCaller,
+ MethodInvokeNode min) {
+ System.out.println("-addOrderingConstraintFromCompLocParamToArg=" + min.printNode(0));
+
+ GlobalFlowGraph globalGraph = getSubGlobalFlowGraph(ssjava.getMethodContainingSSJavaLoop());
+
+ Set<NTuple<Location>> pcLocTupleSet = getPCLocTupleSet(min);
+
+ MethodDescriptor mdCallee = min.getMethod();
+
+ FlowGraph calleeFlowGraph = getFlowGraph(mdCallee);
+ for (int idx = 0; idx < calleeFlowGraph.getNumParameters(); idx++) {
+ FlowNode paramNode = calleeFlowGraph.getParamFlowNode(idx);
+ NTuple<Location> globalParamLocTuple =
+ translateToLocTuple(mdCallee, paramNode.getDescTuple());
+ translateToLocTuple(mdCallee, paramNode.getDescTuple());
+ CompositeLocation compLoc = paramNode.getCompositeLocation();
+ System.out.println("---paramNode=" + paramNode + " compLoc=" + compLoc);
+ if (compLoc != null) {
+ NTuple<Descriptor> argTuple = getNodeTupleByArgIdx(min, idx);
+ NTuple<Location> globalArgLocTuple = translateToLocTuple(mdCaller, argTuple);
+
+ if (!isLiteralValueLocTuple(globalArgLocTuple)
+ && !isLiteralValueLocTuple(globalParamLocTuple)) {
+ if (!globalGraph.hasValueFlowEdge(globalArgLocTuple, globalParamLocTuple)) {
+ System.out.println("----- add global flow globalArgLocTuple=" + globalArgLocTuple
+ + "-> globalParamLocTuple=" + globalParamLocTuple);
+ hasChanges = true;
+ globalGraph.addValueFlowEdge(globalArgLocTuple, globalParamLocTuple);
+ }
+ }
+
+ for (Iterator iterator = pcLocTupleSet.iterator(); iterator.hasNext();) {
+ NTuple<Location> pcLocTuple = (NTuple<Location>) iterator.next();
+
+ if (!isLiteralValueLocTuple(pcLocTuple) && !isLiteralValueLocTuple(globalParamLocTuple)) {
+ if (!globalGraph.hasValueFlowEdge(pcLocTuple, globalParamLocTuple)) {
+ System.out
+ .println("----- add global flow PCLOC="
+ + pcLocTuple
+ + "-> globalParamLocTu!globalArgLocTuple.get(0).getLocDescriptor().equals(LITERALDESC)ple="
+ + globalParamLocTuple);
+ hasChanges = true;
+ globalGraph.addValueFlowEdge(pcLocTuple, globalParamLocTuple);
+ }
+ }
+
+ }
+ }
+ }
+ }
+
+ private boolean isLiteralValueLocTuple(NTuple<Location> locTuple) {
+ return locTuple.get(0).getLocDescriptor().equals(LITERALDESC);
}
public void assignCompositeLocationToFlowGraph(FlowGraph flowGraph, Location loc,
Set<FlowNode> nodeSet = flowGraph.getNodeSet();
for (Iterator iterator = nodeSet.iterator(); iterator.hasNext();) {
FlowNode node = (FlowNode) iterator.next();
- if (node.getDescTuple().startsWith(localDesc)) {
+ if (node.getDescTuple().startsWith(localDesc)
+ && !node.getDescTuple().get(0).equals(LITERALDESC)) {
// need to assign the inferred composite location to this node
CompositeLocation newCompLoc = generateCompositeLocation(node.getDescTuple(), inferCompLoc);
node.setCompositeLocation(newCompLoc);
Map<Location, CompositeLocation> callerMapLocToCompLoc =
callerGraph.getMapLocationToInferCompositeLocation();
+ Map<Integer, NTuple<Descriptor>> mapIdxToArgTuple = mapMethodInvokeNodeToArgIdxMap.get(min);
+
FlowGraph calleeFlowGraph = getFlowGraph(mdCallee);
GlobalFlowGraph calleeGlobalGraph = getSubGlobalFlowGraph(mdCallee);
baseLocTuple = translateToLocTuple(mdCaller, mapMethodInvokeNodeToBaseTuple.get(min));
}
- // System.out.println("\n-translate caller infer composite loc to callee=" + mdCallee
- // + " baseLocTuple=" + baseLocTuple);
+ System.out.println("\n-#translate caller=" + mdCaller + " infer composite loc to callee="
+ + mdCallee + " baseLocTuple=" + baseLocTuple);
+ // System.out.println("-mapIdxToArgTuple=" + mapIdxToArgTuple);
+ System.out.println("-callerMapLocToCompLoc=" + callerMapLocToCompLoc);
+
Set<Location> keySet = callerMapLocToCompLoc.keySet();
for (Iterator iterator = keySet.iterator(); iterator.hasNext();) {
Location key = (Location) iterator.next();
CompositeLocation newCalleeCompLoc;
if (baseLocTuple != null && callerCompLoc.getTuple().startsWith(baseLocTuple)) {
- // System.out.println("---need to translate callerCompLoc=" + callerCompLoc
- // + " with baseTuple=" + 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);
+ System.out.println("---key=" + key + " callerCompLoc=" + callerCompLoc
+ + " newCalleeCompLoc=" + newCalleeCompLoc);
+ System.out.println("-----baseLoctuple=" + baseLocTuple);
+ System.out.println("-----caller=" + mdCaller + " callee=" + mdCallee);
} else {
// check if it is the global access
Location compLocFirstElement = callerCompLoc.getTuple().get(0);
newCalleeCompLoc.addLocation(callerCompLoc.get(i));
}
calleeGlobalGraph.addMapLocationToInferCompositeLocation(key, newCalleeCompLoc);
+ System.out.println("---key=" + key + " callerCompLoc=" + callerCompLoc
+ + " newCalleeCompLoc=" + newCalleeCompLoc);
+ System.out.println("-----caller=" + mdCaller + " callee=" + mdCallee);
+
+ } else {
+ int paramIdx = getParamIdx(callerCompLoc, mapIdxToArgTuple);
+ if (paramIdx == -1) {
+ continue;
+ }
+ NTuple<Descriptor> argTuple = mapIdxToArgTuple.get(paramIdx);
+
+ FlowNode paramFlowNode = calleeFlowGraph.getParamFlowNode(paramIdx);
+ System.out.println("-----paramIdx=" + paramIdx + " paramFlowNode=" + paramFlowNode);
+ NTuple<Location> paramLocTuple =
+ translateToLocTuple(mdCallee, paramFlowNode.getDescTuple());
+ newCalleeCompLoc = new CompositeLocation();
+ for (int i = 0; i < paramLocTuple.size(); i++) {
+ newCalleeCompLoc.addLocation(paramLocTuple.get(i));
+ }
+ for (int i = argTuple.size(); i < callerCompLoc.getSize(); i++) {
+ newCalleeCompLoc.addLocation(callerCompLoc.get(i));
+ }
+ calleeGlobalGraph.addMapLocationToInferCompositeLocation(key, newCalleeCompLoc);
+ System.out.println("---key=" + key + " callerCompLoc=" + callerCompLoc
+ + " newCalleeCompLoc=" + newCalleeCompLoc);
+ System.out.println("------argTuple=" + argTuple);
+ System.out.println("-----caller=" + mdCaller + " callee=" + mdCallee);
}
// 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. min="
- // + min.printNode(0));
- Map<Integer, NTuple<Descriptor>> mapIdxToArgTuple = mapMethodInvokeNodeToArgIdxMap.get(min);
Set<Integer> idxSet = mapIdxToArgTuple.keySet();
for (Iterator iterator = idxSet.iterator(); iterator.hasNext();) {
Integer idx = (Integer) iterator.next();
NTuple<Location> calleeParamLocTuple =
translateToLocTuple(mdCallee, calleeParamDescTuple);
- System.out.println("---need to translate callerCompLoc=" + callerCompLoc
- + " with baseTuple=" + baseLocTuple + " calleeParamLocTuple="
- + calleeParamLocTuple);
+ // System.out.println("---need to translate callerCompLoc=" + callerCompLoc
+ // + " with baseTuple=" + baseLocTuple + " calleeParamLocTuple="
+ // + calleeParamLocTuple);
CompositeLocation newCalleeCompLoc =
translateCompositeLocationToCallee(callerCompLoc, baseLocTuple, mdCallee);
calleeGlobalGraph.addMapLocationToInferCompositeLocation(calleeParamLocTuple.get(0),
newCalleeCompLoc);
- System.out.println("---callee loc=" + calleeParamLocTuple.get(0)
- + " 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);
}
}
}
+ private int getParamIdx(CompositeLocation compLoc,
+ Map<Integer, NTuple<Descriptor>> mapIdxToArgTuple) {
+
+ // if the composite location is started with the argument descriptor
+ // return the argument's index. o.t. return -1
+
+ Set<Integer> keySet = mapIdxToArgTuple.keySet();
+ for (Iterator iterator = keySet.iterator(); iterator.hasNext();) {
+ Integer key = (Integer) iterator.next();
+ NTuple<Descriptor> argTuple = mapIdxToArgTuple.get(key);
+ if (argTuple.size() > 0 && translateToDescTuple(compLoc.getTuple()).startsWith(argTuple)) {
+ System.out.println("compLoc.getTuple=" + compLoc + " is started with " + argTuple);
+ return key.intValue();
+ }
+ }
+
+ return -1;
+ }
+
private boolean isPrimitiveType(NTuple<Descriptor> argTuple) {
Descriptor lastDesc = argTuple.get(argTuple.size() - 1);
return ((FieldDescriptor) lastDesc).getType().isPrimitive();
} else if (lastDesc instanceof VarDescriptor) {
return ((VarDescriptor) lastDesc).getType().isPrimitive();
+ } else if (lastDesc instanceof InterDescriptor) {
+ return true;
}
- return true;
+ return false;
}
private CompositeLocation translateCompositeLocationToCallee(CompositeLocation callerCompLoc,
globalFlowGraph.getReachableNodeSetByPrefix(node.getLocTuple().get(0));
// Set<GlobalFlowNode> reachNodeSet = globalFlowGraph.getReachableNodeSetFrom(node);
- // System.out.println("node=" + node + " prefixList=" + prefixList + " reachableNodeSet="
- // + reachableNodeSet);
+ // System.out.println("node=" + node + " prefixList=" + prefixList);
for (int i = 0; i < prefixList.size(); i++) {
NTuple<Location> curPrefix = prefixList.get(i);
reachableCommonPrefixSet.add(reachNode.getLocTuple());
}
}
+ // System.out.println("reachableCommonPrefixSet=" + reachableCommonPrefixSet);
if (!reachableCommonPrefixSet.isEmpty()) {
MethodDescriptor nodePrefixLocFirstElementMethodDesc =
(MethodDescriptor) prefixLoc.getDescriptor();
+ // System.out.println("curPrefixFirstElementMethodDesc=" +
+ // curPrefixFirstElementMethodDesc);
+ // System.out.println("nodePrefixLocFirstElementMethodDesc="
+ // + nodePrefixLocFirstElementMethodDesc);
+
if (curPrefixFirstElementMethodDesc.equals(nodePrefixLocFirstElementMethodDesc)
|| isTransitivelyCalledFrom(nodePrefixLocFirstElementMethodDesc,
curPrefixFirstElementMethodDesc)) {
CompositeLocation newCompLoc = generateCompositeLocation(curPrefix);
System.out.println("NEED TO ASSIGN COMP LOC TO " + node + " with prefix=" + curPrefix);
- System.out.println("- newCompLoc=" + newCompLoc);
+ System.out.println("-targetLocalLoc=" + targetLocalLoc + " - newCompLoc="
+ + newCompLoc);
globalFlowGraph.addMapLocationToInferCompositeLocation(targetLocalLoc, newCompLoc);
// }
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);
+ 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 = incomingNodeSetPrefix.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)) {
ClassDescriptor cd = md.getClassDesc();
int idx = 0;
-
Set<NTuple<Location>> toberemoved = new HashSet<NTuple<Location>>();
- for (int i = 0; i < prefixList.size(); i++) {
- NTuple<Location> prefixLocTuple = prefixList.get(i);
- if (!containsClassDesc(cd, prefixLocTuple)) {
- toberemoved.add(prefixLocTuple);
- }
- }
+ // for (int i = 0; i < prefixList.size(); i++) {
+ // NTuple<Location> prefixLocTuple = prefixList.get(i);
+ // if (!containsClassDesc(cd, prefixLocTuple)) {
+ // toberemoved.add(prefixLocTuple);
+ // }
+ // }
+
+ // System.out.println("method class=" + cd + " toberemoved=" + toberemoved);
prefixList.removeAll(toberemoved);
MethodDescriptor md = flowGraph.getMethodDescriptor();
- GlobalFlowGraph globalGraph = new GlobalFlowGraph(md);
+ GlobalFlowGraph globalGraph = getSubGlobalFlowGraph(md);
// Set<FlowNode> nodeSet = flowGraph.getNodeSet();
Set<FlowEdge> edgeSet = flowGraph.getEdgeSet();
FlowGraph calleeFlowGraph = getFlowGraph(possibleMdCallee);
Map<Integer, NTuple<Descriptor>> mapIdxToArg = mapMethodInvokeNodeToArgIdxMap.get(min);
- System.out.println("-----mapMethodInvokeNodeToArgIdxMap.get(min)="
- + 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();
}
}
+ addValueFlowBetweenParametersToCaller(min, mdCaller, possibleMdCallee);
+
NTuple<Descriptor> baseTuple = mapMethodInvokeNodeToBaseTuple.get(min);
GlobalFlowGraph calleeSubGlobalGraph = getSubGlobalFlowGraph(possibleMdCallee);
Set<GlobalFlowNode> calleeNodeSet = calleeSubGlobalGraph.getNodeSet();
addValueFlowFromCalleeNode(min, mdCaller, possibleMdCallee, calleeNode);
}
- // int numParam = calleeFlowGraph.getNumParameters();
- // for (int idx = 0; idx < numParam; idx++) {
- //
- // FlowNode paramNode = calleeFlowGraph.getParamFlowNode(idx);
- //
- // NTuple<Location> paramLocTuple =
- // translateToLocTuple(possibleMdCallee, paramNode.getCurrentDescTuple());
- //
- // GlobalFlowNode globalParamNode =
- // calleeSubGlobalGraph.getFlowNode(paramLocTuple);
- //
- // 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
- //
- // addValueFlowsFromCalleeParam(mdCaller, argLocTuple, baseLocTuple,
- // possibleMdCallee,
- // globalParamNode);
- // }
- //
- // // TODO
- // // FlowGraph callerSubGlobalGraph = getSubGlobalFlowGraph(mdCaller);
- // // 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,
- // // argTuple, baseTuple);
- // // }
-
}
- private void addValueFlowFromCalleeNode(MethodInvokeNode min, MethodDescriptor mdCaller,
- MethodDescriptor mdCallee, GlobalFlowNode calleeSrcNode) {
+ private void addValueFlowBetweenParametersToCaller(MethodInvokeNode min,
+ MethodDescriptor mdCaller, MethodDescriptor mdCallee) {
+
+ System.out.println("***addValueFlowBetweenParametersToCaller from mdCallee=" + mdCallee);
+
+ Set<NTuple<Location>> PCLocTupleSet = mapMethodInvokeNodeToPCLocTupleSet.get(min);
+ System.out.println("-PCLocTupleSet=" + PCLocTupleSet);
GlobalFlowGraph calleeSubGlobalGraph = getSubGlobalFlowGraph(mdCallee);
GlobalFlowGraph callerSubGlobalGraph = getSubGlobalFlowGraph(mdCaller);
- NTuple<Location> callerSrcNodeLocTuple =
- translateToCallerLocTuple(min, mdCallee, mdCaller, calleeSrcNode.getLocTuple());
-
- if (callerSrcNodeLocTuple != null) {
- Set<GlobalFlowNode> outNodeSet = calleeSubGlobalGraph.getOutNodeSet(calleeSrcNode);
+ // if the parameter A reaches to the parameter B
+ // then, add an edge the argument A -> the argument B to the global flow graph
+ FlowGraph calleeFlowGraph = getFlowGraph(mdCallee);
+ FlowGraph callerFlowGraph = getFlowGraph(mdCaller);
+ int numParam = calleeFlowGraph.getNumParameters();
- 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);
- }
- }
- }
+ for (int i = 0; i < numParam; i++) {
+ for (int k = 0; k < numParam; k++) {
- }
+ if (i != k) {
- private NTuple<Location> translateToCallerLocTuple(MethodInvokeNode min,
- MethodDescriptor mdCallee, MethodDescriptor mdCaller, NTuple<Location> nodeLocTuple) {
- // this method will return the same nodeLocTuple if the corresponding argument is literal
- // value.
+ System.out.println("i=" + i + " k=" + k);
- FlowGraph calleeFlowGraph = getFlowGraph(mdCallee);
+ FlowNode paramNode1 = calleeFlowGraph.getParamFlowNode(i);
+ FlowNode paramNode2 = calleeFlowGraph.getParamFlowNode(k);
- NTuple<Descriptor> nodeDescTuple = translateToDescTuple(nodeLocTuple);
- if (calleeFlowGraph.isParameter(nodeDescTuple)) {
- int paramIdx = calleeFlowGraph.getParamIdx(nodeDescTuple);
- NTuple<Descriptor> argDescTuple = mapMethodInvokeNodeToArgIdxMap.get(min).get(paramIdx);
+ NTuple<Descriptor> arg1Tuple = getNodeTupleByArgIdx(min, i);
+ NTuple<Descriptor> arg2Tuple = getNodeTupleByArgIdx(min, k);
- if (isPrimitive(nodeLocTuple.get(0).getLocDescriptor())) {
- // the type of argument is primitive.
- return nodeLocTuple.clone();
- }
- NTuple<Location> argLocTuple = translateToLocTuple(mdCaller, argDescTuple);
+ NTuple<Descriptor> paramDescTuple1 = paramNode1.getCurrentDescTuple();
+ NTuple<Descriptor> paramDescTuple2 = paramNode2.getCurrentDescTuple();
- NTuple<Location> callerLocTuple = new NTuple<Location>();
+ if (paramDescTuple1.get(0).equals(paramDescTuple2.get(0))) {
+ // if two parameters share the same prefix
+ // it already has been assigned to a composite location
+ // so we don't need to add an additional ordering relation caused by these two
+ // paramters.
+ continue;
+ }
- callerLocTuple.addAll(argLocTuple);
- for (int i = 1; i < nodeLocTuple.size(); i++) {
- callerLocTuple.add(nodeLocTuple.get(i));
- }
- return callerLocTuple;
- } else {
- return nodeLocTuple.clone();
- }
+ NTuple<Location> paramLocTuple1 = translateToLocTuple(mdCallee, paramDescTuple1);
+ NTuple<Location> paramLocTuple2 = translateToLocTuple(mdCallee, paramDescTuple2);
- }
+ // check if the callee propagates an ordering constraints through
+ // parameters
- public static boolean isPrimitive(Descriptor desc) {
+ // Set<FlowNode> localReachSet = calleeFlowGraph.getLocalReachFlowNodeSetFrom(paramNode1);
- if (desc instanceof FieldDescriptor) {
- return ((FieldDescriptor) desc).getType().isPrimitive();
- } else if (desc instanceof VarDescriptor) {
- return ((VarDescriptor) desc).getType().isPrimitive();
- } else if (desc instanceof InterDescriptor) {
- return true;
- }
+ Set<GlobalFlowNode> reachToParam1Set =
+ calleeSubGlobalGraph.getIncomingNodeSetByPrefix(paramLocTuple1.get(0));
- return false;
- }
+ // System.out.println("-- localReachSet from param1=" + localReachSet);
- private NTuple<Descriptor> translateToDescTuple(NTuple<Location> locTuple) {
+ GlobalFlowNode globalFlowNodeParam1 = calleeSubGlobalGraph.getFlowNode(paramLocTuple1);
+ GlobalFlowNode globalFlowNodeParam2 = calleeSubGlobalGraph.getFlowNode(paramLocTuple2);
- NTuple<Descriptor> descTuple = new NTuple<Descriptor>();
- for (int i = 0; i < locTuple.size(); i++) {
- descTuple.add(locTuple.get(i).getLocDescriptor());
- }
- return descTuple;
+ System.out.println("-param1CurTuple=" + paramDescTuple1 + " param2CurTuple="
+ + paramDescTuple2);
- }
+ System.out.println("arg1Tuple=" + arg1Tuple + " arg2Tuple=" + arg2Tuple);
+ // System.out.println("-reachToParam1Set=" + reachToParam1Set);
- private void addValueFlowsFromCalleeParam(MethodDescriptor mdCaller,
- NTuple<Location> argLocTuple, NTuple<Location> baseLocTuple, MethodDescriptor mdCallee,
- GlobalFlowNode globalParamNode) {
+ if (arg1Tuple.size() > 0 && arg2Tuple.size() > 0
+ && reachToParam1Set.contains(globalFlowNodeParam2)) {
+ // need to propagate an ordering relation s.t. arg1 is higher
+ // than arg2
+ System.out.println("---param1=" + paramNode1 + " is higher than param2=" + paramNode2);
- Set<GlobalFlowNode> visited = new HashSet<GlobalFlowNode>();
- visited.add(globalParamNode);
- recurAddValueFlowsFromCalleeParam(mdCaller, argLocTuple, baseLocTuple, mdCallee,
- globalParamNode);
+ NTuple<Location> callerSrcNodeLocTuple =
+ translateToCallerLocTuple(min, mdCallee, mdCaller, paramLocTuple1);
- }
+ NTuple<Location> callerDstNodeLocTuple =
+ translateToCallerLocTuple(min, mdCallee, mdCaller, paramLocTuple2);
- private void recurAddValueFlowsFromCalleeParam(MethodDescriptor mdCaller,
- NTuple<Location> argLocTuple, NTuple<Location> baseLocTuple, MethodDescriptor mdCallee,
- GlobalFlowNode calleeCurNode) {
+ System.out.println("---callerSrcNodeLocTuple=" + callerSrcNodeLocTuple);
+ System.out.println("---callerDstNodeLocTuple=" + callerDstNodeLocTuple);
- // FlowGraph calleeFlowGraph = getFlowGraph(mdCallee);
- // GlobalFlowGraph calleeSubGlobalGraph = getSubGlobalFlowGraph(mdCallee);
- //
- // NTuple<Location> curNodeLocTuple = calleeCurNode.getLocTuple();
- // NTuple<Descriptor> curNodeDescTuple = calleeCurNode.getDescTuple();
- // if (calleeFlowGraph.isParameter(curNodeDescTuple)) {
- // curNodeLocTuple = translateToCaller(argLocTuple, curNodeLocTuple);
- // }
- //
- // Set<GlobalFlowNode> outNodeSet =
- // calleeSubGlobalGraph.getOutNodeSet(calleeCurNode);
- // for (Iterator iterator = outNodeSet.iterator(); iterator.hasNext();) {
- // GlobalFlowNode outNode = (GlobalFlowNode) iterator.next();
- //
- // NTuple<Location> curNodeLocTuple = calleeCurNode.getLocTuple();
- // NTuple<Descriptor> curNodeDescTuple = calleeCurNode.getDescTuple();
- // if (calleeFlowGraph.isParameter(curNodeDescTuple)) {
- // curNodeLocTuple = translateToCaller(argLocTuple, curNodeLocTuple);
- // }
- //
- // outNode.getDescTuple();
- //
- // if (calleeFlowGraph.is)
- //
- // if (calleeSubGlobalGraph.isParameter(srcDescTuple)) {
- // // 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);
- // }
- //
- // }
- //
- // Set<FlowEdge> edgeSet =
- // calleeSubGlobalGraph.getOutEdgeSetStartingFrom(calleeSrcNode);
- // for (Iterator iterator = edgeSet.iterator(); iterator.hasNext();) {
- // FlowEdge flowEdge = (FlowEdge) iterator.next();
- //
- // NTuple<Descriptor> srcDescTuple = flowEdge.getInitTuple();
- // NTuple<Descriptor> dstDescTuple = flowEdge.getEndTuple();
- //
- // FlowNode dstNode = calleeSubGlobalGraph.getFlowNode(dstDescTuple);
- //
- // if (calleeSubGlobalGraph.isParameter(srcDescTuple)) {
- // // 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);
- // }
- //
- // 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);
- // }
- //
- // callerSubGlobalGraph.addValueFlowEdge(srcDescTuple, dstDescTuple);
- //
- // if (!visited.contains(dstNode)) {
- // visited.add(dstNode);
- // recurAddValueFlowsFromCalleeParam(min, calleeSubGlobalGraph, dstNode,
- // callerSubGlobalGraph,
- // dstDescTuple, visited, baseTuple);
- // }
- //
- // }
+ System.out.println("-----add global value flow :" + callerSrcNodeLocTuple + "->"
+ + callerDstNodeLocTuple);
+ callerSubGlobalGraph.addValueFlowEdge(callerSrcNodeLocTuple, callerDstNodeLocTuple);
+ for (Iterator iterator = PCLocTupleSet.iterator(); iterator.hasNext();) {
+ NTuple<Location> pcLocTuple = (NTuple<Location>) iterator.next();
+ System.out.println("-----add global value flow PC :" + pcLocTuple + "->"
+ + callerSrcNodeLocTuple);
+ callerSubGlobalGraph.addValueFlowEdge(pcLocTuple, callerSrcNodeLocTuple);
+ }
- }
+ // add a new flow between the corresponding arguments.
+ callerFlowGraph.addValueFlowEdge(arg1Tuple, arg2Tuple);
+ System.out.println("arg1=" + arg1Tuple + " arg2=" + arg2Tuple);
- private NTuple<Location> translateToCaller(NTuple<Location> argLocTuple,
- NTuple<Location> curNodeLocTuple) {
+ // System.out
+ // .println("-arg1Tuple=" + arg1Tuple + " is higher than arg2Tuple=" + arg2Tuple);
- NTuple<Location> callerLocTuple = new NTuple<Location>();
+ }
- callerLocTuple.addAll(argLocTuple);
- for (int i = 1; i < curNodeLocTuple.size(); i++) {
- callerLocTuple.add(curNodeLocTuple.get(i));
+ System.out.println();
+ }
+ }
}
- return callerLocTuple;
}
- private void recurAddValueFlowsFromCalleeParam(MethodInvokeNode min,
- FlowGraph calleeSubGlobalGraph, FlowNode calleeSrcNode, FlowGraph callerSubGlobalGraph,
- NTuple<Descriptor> callerSrcTuple, Set<FlowNode> visited, NTuple<Descriptor> baseTuple) {
+ private void addValueFlowFromCalleeNode(MethodInvokeNode min, MethodDescriptor mdCaller,
+ MethodDescriptor mdCallee, GlobalFlowNode calleeSrcNode) {
- MethodDescriptor mdCallee = calleeSubGlobalGraph.getMethodDescriptor();
+ GlobalFlowGraph calleeSubGlobalGraph = getSubGlobalFlowGraph(mdCallee);
+ GlobalFlowGraph callerSubGlobalGraph = getSubGlobalFlowGraph(mdCaller);
- // Set<FlowEdge> edgeSet =
- // calleeSubGlobalGraph.getOutEdgeSet(calleeSrcNode);
- Set<FlowEdge> edgeSet = calleeSubGlobalGraph.getOutEdgeSetStartingFrom(calleeSrcNode);
- for (Iterator iterator = edgeSet.iterator(); iterator.hasNext();) {
- FlowEdge flowEdge = (FlowEdge) iterator.next();
+ System.out.println("$addValueFlowFromCalleeNode calleeSrcNode=" + calleeSrcNode);
- NTuple<Descriptor> srcDescTuple = flowEdge.getInitTuple();
- NTuple<Descriptor> dstDescTuple = flowEdge.getEndTuple();
+ NTuple<Location> callerSrcNodeLocTuple =
+ translateToCallerLocTuple(min, mdCallee, mdCaller, calleeSrcNode.getLocTuple());
+ System.out.println("---callerSrcNodeLocTuple=" + callerSrcNodeLocTuple);
- FlowNode dstNode = calleeSubGlobalGraph.getFlowNode(dstDescTuple);
+ if (callerSrcNodeLocTuple != null && callerSrcNodeLocTuple.size() > 0) {
+ Set<GlobalFlowNode> outNodeSet = calleeSubGlobalGraph.getOutNodeSet(calleeSrcNode);
- if (calleeSubGlobalGraph.isParameter(srcDescTuple)) {
- // 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);
+ 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 the same nodeLocTuple if the corresponding argument is literal
+ // value.
+
+ 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);
- 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);
- }
+ // if (isPrimitive(nodeLocTuple.get(0).getLocDescriptor())) {
+ // // the type of argument is primitive.
+ // return nodeLocTuple.clone();
+ // }
+ NTuple<Location> argLocTuple = translateToLocTuple(mdCaller, argDescTuple);
- callerSubGlobalGraph.addValueFlowEdge(srcDescTuple, dstDescTuple);
+ NTuple<Location> callerLocTuple = new NTuple<Location>();
- if (!visited.contains(dstNode)) {
- visited.add(dstNode);
- recurAddValueFlowsFromCalleeParam(min, calleeSubGlobalGraph, dstNode, callerSubGlobalGraph,
- dstDescTuple, visited, baseTuple);
+ callerLocTuple.addAll(argLocTuple);
+ for (int i = 1; i < nodeLocTuple.size(); i++) {
+ callerLocTuple.add(nodeLocTuple.get(i));
}
-
+ return callerLocTuple;
+ } else {
+ return nodeLocTuple.clone();
}
}
- private NTuple<Descriptor> translateToCaller(MethodInvokeNode min, int paramIdx,
- NTuple<Descriptor> srcDescTuple) {
-
- NTuple<Descriptor> callerTuple = new NTuple<Descriptor>();
-
- NTuple<Descriptor> argTuple = mapMethodInvokeNodeToArgIdxMap.get(min).get(paramIdx);
-
- for (int i = 0; i < argTuple.size(); i++) {
- callerTuple.add(argTuple.get(i));
- }
+ public static boolean isPrimitive(Descriptor desc) {
- for (int i = 1; i < srcDescTuple.size(); i++) {
- callerTuple.add(srcDescTuple.get(i));
+ if (desc instanceof FieldDescriptor) {
+ return ((FieldDescriptor) desc).getType().isPrimitive();
+ } else if (desc instanceof VarDescriptor) {
+ return ((VarDescriptor) desc).getType().isPrimitive();
+ } else if (desc instanceof InterDescriptor) {
+ return true;
}
- return callerTuple;
+ return false;
}
- private NTuple<Descriptor> traslateToCalleeParamTupleToCallerArgTuple(
- NTuple<Descriptor> calleeInitTuple, NTuple<Descriptor> callerSrcTuple) {
-
- NTuple<Descriptor> callerInitTuple = new NTuple<Descriptor>();
-
- for (int i = 0; i < callerSrcTuple.size(); i++) {
- callerInitTuple.add(callerSrcTuple.get(i));
- }
+ private NTuple<Descriptor> translateToDescTuple(NTuple<Location> locTuple) {
- for (int i = 1; i < calleeInitTuple.size(); i++) {
- callerInitTuple.add(calleeInitTuple.get(i));
+ NTuple<Descriptor> descTuple = new NTuple<Descriptor>();
+ for (int i = 0; i < locTuple.size(); i++) {
+ descTuple.add(locTuple.get(i).getLocDescriptor());
}
+ return descTuple;
- return callerInitTuple;
}
public LocationSummary getLocationSummary(Descriptor d) {
// inferred composite location
for (int paramIdx = 0; paramIdx < flowGraph.getNumParameters(); paramIdx++) {
FlowNode flowNode = flowGraph.getParamFlowNode(paramIdx);
- CompositeLocation inferredCompLoc = flowNode.getCompositeLocation();
+ CompositeLocation inferredCompLoc =
+ updateCompositeLocation(flowNode.getCompositeLocation());
// NTuple<Descriptor> descTuple = flowNode.getDescTuple();
//
// CompositeLocation assignedCompLoc = flowNode.getCompositeLocation();
// loc.setLocDescriptor(locDesc);
// inferredCompLoc = new CompositeLocation(loc);
// }
- System.out.println("-paramIdx=" + paramIdx + " infer=" + inferredCompLoc);
- System.out.println("-flowNode inferLoc=" + flowNode.getCompositeLocation());
+ System.out.println("-paramIdx=" + paramIdx + " infer=" + inferredCompLoc + " original="
+ + flowNode.getCompositeLocation());
Descriptor localVarDesc = flowNode.getDescTuple().get(0);
methodSummary.addMapVarNameToInferCompLoc(localVarDesc, inferredCompLoc);
Set<Descriptor> keySet = mapDescriptorToHierarchyGraph.keySet();
for (Iterator iterator = keySet.iterator(); iterator.hasNext();) {
Descriptor desc = (Descriptor) iterator.next();
+ // System.out.println("SSJAVA: remove redundant edges: " + desc);
HierarchyGraph simpleHierarchyGraph = getHierarchyGraph(desc).clone();
simpleHierarchyGraph.setName(desc + "_SIMPLE");
simpleHierarchyGraph.removeRedundantEdges();
- // simpleHierarchyGraph.simplifyHierarchyGraph();
mapDescriptorToSimpleHierarchyGraph.put(desc, simpleHierarchyGraph);
}
}
Set<Descriptor> keySet = mapDescriptorToHierarchyGraph.keySet();
for (Iterator iterator = keySet.iterator(); iterator.hasNext();) {
Descriptor desc = (Descriptor) iterator.next();
+ System.out.println("SSJAVA: Constructing Skeleton Hierarchy Graph: " + desc);
HierarchyGraph simpleGraph = getSimpleHierarchyGraph(desc);
HierarchyGraph skeletonGraph = simpleGraph.generateSkeletonGraph();
skeletonGraph.setMapDescToHNode(simpleGraph.getMapDescToHNode());
// do fixed-point analysis
- ssjava.init();
LinkedList<MethodDescriptor> descriptorListToAnalyze = ssjava.getSortedDescriptors();
// Collections.sort(descriptorListToAnalyze, new
}
}
+ Set<Descriptor> keySet = mapDescriptorToHierarchyGraph.keySet();
+ for (Iterator iterator = keySet.iterator(); iterator.hasNext();) {
+ Descriptor key = (Descriptor) iterator.next();
+ HierarchyGraph graph = getHierarchyGraph(key);
+
+ Set<HNode> nodeToBeConnected = new HashSet<HNode>();
+ for (Iterator iterator2 = graph.getNodeSet().iterator(); iterator2.hasNext();) {
+ HNode node = (HNode) iterator2.next();
+ if (!node.isSkeleton() && !node.isCombinationNode()) {
+ if (graph.getIncomingNodeSet(node).size() == 0) {
+ nodeToBeConnected.add(node);
+ }
+ }
+ }
+
+ for (Iterator iterator2 = nodeToBeConnected.iterator(); iterator2.hasNext();) {
+ HNode node = (HNode) iterator2.next();
+ System.out.println("NEED TO BE CONNECTED TO TOP=" + node);
+ graph.addEdge(graph.getHNode(TOPDESC), node);
+ }
+
+ }
+
}
private HierarchyGraph getHierarchyGraph(Descriptor d) {
// NTuple<Descriptor>
boolean hasGlobalAccess = false;
for (Iterator iterator = nodeSet.iterator(); iterator.hasNext();) {
- FlowNode srcNode = (FlowNode) iterator.next();
-
- // if the srcNode is started with the global descriptor
- // need to set as a skeleton node
- if (!hasGlobalAccess && srcNode.getDescTuple().startsWith(GLOBALDESC)) {
- hasGlobalAccess = true;
+ FlowNode originalSrcNode = (FlowNode) iterator.next();
+
+ Set<FlowNode> sourceNodeSet = new HashSet<FlowNode>();
+ if (originalSrcNode instanceof FlowReturnNode) {
+ FlowReturnNode rnode = (FlowReturnNode) originalSrcNode;
+ Set<NTuple<Descriptor>> tupleSet = rnode.getTupleSet();
+ for (Iterator iterator2 = tupleSet.iterator(); iterator2.hasNext();) {
+ NTuple<Descriptor> nTuple = (NTuple<Descriptor>) iterator2.next();
+ sourceNodeSet.add(fg.getFlowNode(nTuple));
+ System.out.println("&&&SOURCE fg.getFlowNode(nTuple)=" + fg.getFlowNode(nTuple));
+ }
+ } else {
+ sourceNodeSet.add(originalSrcNode);
}
- Set<FlowEdge> outEdgeSet = fg.getOutEdgeSet(srcNode);
- for (Iterator iterator2 = outEdgeSet.iterator(); iterator2.hasNext();) {
- FlowEdge outEdge = (FlowEdge) iterator2.next();
- FlowNode dstNode = outEdge.getDst();
+ System.out.println("---sourceNodeSet=" + sourceNodeSet);
+ for (Iterator iterator3 = sourceNodeSet.iterator(); iterator3.hasNext();) {
+ FlowNode srcNode = (FlowNode) iterator3.next();
+
+ // if the srcNode is started with the global descriptor
+ // need to set as a skeleton node
+ if (!hasGlobalAccess && srcNode.getDescTuple().startsWith(GLOBALDESC)) {
+ hasGlobalAccess = true;
+ }
+
+ Set<FlowEdge> outEdgeSet = fg.getOutEdgeSet(originalSrcNode);
+ for (Iterator iterator2 = outEdgeSet.iterator(); iterator2.hasNext();) {
+ FlowEdge outEdge = (FlowEdge) iterator2.next();
+ FlowNode originalDstNode = outEdge.getDst();
+
+ Set<FlowNode> dstNodeSet = new HashSet<FlowNode>();
+ if (originalDstNode instanceof FlowReturnNode) {
+ FlowReturnNode rnode = (FlowReturnNode) originalDstNode;
+ Set<NTuple<Descriptor>> tupleSet = rnode.getTupleSet();
+ for (Iterator iterator4 = tupleSet.iterator(); iterator4.hasNext();) {
+ NTuple<Descriptor> nTuple = (NTuple<Descriptor>) iterator4.next();
+ dstNodeSet.add(fg.getFlowNode(nTuple));
+ }
+ } else {
+ dstNodeSet.add(originalDstNode);
+ }
+ System.out.println("---dstNodeSet=" + dstNodeSet);
+ for (Iterator iterator4 = dstNodeSet.iterator(); iterator4.hasNext();) {
+ FlowNode dstNode = (FlowNode) iterator4.next();
- NTuple<Descriptor> srcNodeTuple = srcNode.getDescTuple();
- NTuple<Descriptor> dstNodeTuple = dstNode.getDescTuple();
+ NTuple<Descriptor> srcNodeTuple = srcNode.getDescTuple();
+ NTuple<Descriptor> dstNodeTuple = dstNode.getDescTuple();
- if (outEdge.getInitTuple().equals(srcNodeTuple)
- && outEdge.getEndTuple().equals(dstNodeTuple)) {
+ // if (outEdge.getInitTuple().equals(srcNodeTuple)
+ // && outEdge.getEndTuple().equals(dstNodeTuple)) {
- NTuple<Descriptor> srcCurTuple = srcNode.getCurrentDescTuple();
- NTuple<Descriptor> dstCurTuple = dstNode.getCurrentDescTuple();
+ NTuple<Descriptor> srcCurTuple = srcNode.getCurrentDescTuple();
+ NTuple<Descriptor> dstCurTuple = dstNode.getCurrentDescTuple();
- if ((srcCurTuple.size() > 1 && dstCurTuple.size() > 1)
- && srcCurTuple.get(0).equals(dstCurTuple.get(0))) {
+ // System.out.println("-srcCurTuple=" + srcCurTuple + " dstCurTuple=" + dstCurTuple);
- // value flows between fields
- Descriptor desc = srcCurTuple.get(0);
- ClassDescriptor classDesc;
+ if ((srcCurTuple.size() > 1 && dstCurTuple.size() > 1)
+ && srcCurTuple.get(0).equals(dstCurTuple.get(0))) {
- if (desc.equals(GLOBALDESC)) {
- classDesc = md.getClassDesc();
- } else {
- VarDescriptor varDesc = (VarDescriptor) srcCurTuple.get(0);
- classDesc = varDesc.getType().getClassDesc();
- }
- extractFlowsBetweenFields(classDesc, srcNode, dstNode, 1);
+ // value flows between fields
+ Descriptor desc = srcCurTuple.get(0);
+ ClassDescriptor classDesc;
- } else {
- // value flow between local var - local var or local var - field
+ if (desc.equals(GLOBALDESC)) {
+ classDesc = md.getClassDesc();
+ } else {
+ VarDescriptor varDesc = (VarDescriptor) srcCurTuple.get(0);
+ classDesc = varDesc.getType().getClassDesc();
+ }
+ extractFlowsBetweenFields(classDesc, srcNode, dstNode, 1);
- Descriptor srcDesc = srcCurTuple.get(0);
- Descriptor dstDesc = dstCurTuple.get(0);
+ } else if (!srcCurTuple.get(0).equals(dstCurTuple.get(0))) {
+ // value flow between local var - local var or local var - field
- methodGraph.addEdge(srcDesc, dstDesc);
+ Descriptor srcDesc = srcCurTuple.get(0);
+ Descriptor dstDesc = dstCurTuple.get(0);
+
+ methodGraph.addEdge(srcDesc, dstDesc);
+
+ if (fg.isParamDesc(srcDesc)) {
+ methodGraph.setParamHNode(srcDesc);
+ }
+ if (fg.isParamDesc(dstDesc)) {
+ methodGraph.setParamHNode(dstDesc);
+ }
- if (fg.isParamDesc(srcDesc)) {
- methodGraph.setParamHNode(srcDesc);
- }
- if (fg.isParamDesc(dstDesc)) {
- methodGraph.setParamHNode(dstDesc);
}
+ // }
}
}
+
}
+
}
// If the method accesses static fields
}
methodGraph.getHNode(GLOBALDESC).setSkeleton(true);
+ if (ssjava.getMethodContainingSSJavaLoop().equals(md)) {
+ // if the current method contains the event loop
+ // we need to set all nodes of the hierarchy graph as a skeleton node
+ Set<HNode> hnodeSet = methodGraph.getNodeSet();
+ for (Iterator iterator = hnodeSet.iterator(); iterator.hasNext();) {
+ HNode hnode = (HNode) iterator.next();
+ hnode.setSkeleton(true);
+ }
+ }
+
}
private MethodSummary getMethodSummary(MethodDescriptor md) {
if (desc instanceof MethodDescriptor) {
System.out.println("#EXTRA LOC DECLARATION GEN=" + desc);
- MethodSummary methodSummary = getMethodSummary((MethodDescriptor) desc);
+ MethodDescriptor md = (MethodDescriptor) desc;
+ MethodSummary methodSummary = getMethodSummary(md);
if (!ssjava.getMethodContainingSSJavaLoop().equals(desc)) {
TypeDescriptor returnType = ((MethodDescriptor) desc).getReturnType();
}
}
- rtr += "\n@THISLOC(\"" + methodSummary.getThisLocName() + "\")";
+ if (!md.isStatic()) {
+ rtr += "\n@THISLOC(\"" + methodSummary.getThisLocName() + "\")";
+ }
rtr += "\n@GLOBALLOC(\"" + methodSummary.getGlobalLocName() + "\")";
}
String orgSourceLine = sourceVec.get(varLineNum);
int idx =
orgSourceLine.indexOf(generateVarDeclaration((VarDescriptor) localVarDesc));
+ System.out.println("idx=" + idx
+ + " generateVarDeclaration((VarDescriptor) localVarDesc)="
+ + generateVarDeclaration((VarDescriptor) localVarDesc));
assert (idx != -1);
String annoatedStr =
orgSourceLine.substring(0, idx) + locAnnotationStr + " "
int idx =
getParamLocation(methodDefStr,
generateVarDeclaration((VarDescriptor) localVarDesc));
-
+ System.out.println("methodDefStr=" + methodDefStr + " localVarDesc=" + localVarDesc
+ + " idx=" + idx);
assert (idx != -1);
String annoatedStr =
}
private String generateLocationAnnoatation(CompositeLocation loc) {
- System.out.println("loc=" + loc);
String rtr = "";
// method location
Location methodLoc = loc.get(0);
}
- private void inferLattices() {
- }
-
private void calculateExtraLocations() {
- LinkedList<MethodDescriptor> descriptorListToAnalyze = ssjava.getSortedDescriptors();
- for (Iterator iterator = descriptorListToAnalyze.iterator(); iterator.hasNext();) {
+
+ LinkedList<MethodDescriptor> methodDescList = ssjava.getSortedDescriptors();
+ for (Iterator iterator = methodDescList.iterator(); iterator.hasNext();) {
MethodDescriptor md = (MethodDescriptor) iterator.next();
if (!ssjava.getMethodContainingSSJavaLoop().equals(md)) {
calculateExtraLocations(md);
}
}
+
}
private void checkLatticesOfVirtualMethods(MethodDescriptor md) {
private void calculatePCLOC(MethodDescriptor md) {
- System.out.println("#calcualtePCLOC");
+ System.out.println("#CalculatePCLOC");
MethodSummary methodSummary = getMethodSummary(md);
FlowGraph fg = getFlowGraph(md);
Map<Integer, CompositeLocation> mapParamToLoc = methodSummary.getMapParamIdxToInferLoc();
// PC location is higher than location types of parameters which has incoming flows.
Set<NTuple<Location>> paramLocTupleHavingInFlowSet = new HashSet<NTuple<Location>>();
- Set<NTuple<Location>> paramLocTupleNOTHavingInFlowSet = new HashSet<NTuple<Location>>();
+ Set<Descriptor> paramDescNOTHavingInFlowSet = new HashSet<Descriptor>();
+ // Set<FlowNode> paramNodeNOThavingInFlowSet = new HashSet<FlowNode>();
int numParams = fg.getNumParameters();
for (int i = 0; i < numParams; i++) {
NTuple<Descriptor> paramDescTuple = paramFlowNode.getCurrentDescTuple();
NTuple<Location> paramLocTuple = translateToLocTuple(md, paramDescTuple);
- if (fg.getIncomingNodeSetByPrefix(prefix).size() > 0) {
+ Set<FlowNode> inNodeToParamSet = fg.getIncomingNodeSetByPrefix(prefix);
+ if (inNodeToParamSet.size() > 0) {
// parameter has in-value flows
- paramLocTupleHavingInFlowSet.add(paramLocTuple);
+
+ for (Iterator iterator = inNodeToParamSet.iterator(); iterator.hasNext();) {
+ FlowNode inNode = (FlowNode) iterator.next();
+ Set<FlowEdge> outEdgeSet = fg.getOutEdgeSet(inNode);
+ for (Iterator iterator2 = outEdgeSet.iterator(); iterator2.hasNext();) {
+ FlowEdge flowEdge = (FlowEdge) iterator2.next();
+ if (flowEdge.getEndTuple().startsWith(prefix)) {
+ NTuple<Location> paramLocTupleWithIncomingFlow =
+ translateToLocTuple(md, flowEdge.getEndTuple());
+ paramLocTupleHavingInFlowSet.add(paramLocTupleWithIncomingFlow);
+ }
+ }
+ }
+
+ // paramLocTupleHavingInFlowSet.add(paramLocTuple);
} else {
- paramLocTupleNOTHavingInFlowSet.add(paramLocTuple);
+ // paramNodeNOThavingInFlowSet.add(fg.getFlowNode(paramDescTuple));
+ paramDescNOTHavingInFlowSet.add(prefix);
}
}
+ System.out.println("paramLocTupleHavingInFlowSet=" + paramLocTupleHavingInFlowSet);
if (paramLocTupleHavingInFlowSet.size() > 0
&& !coversAllParamters(md, fg, paramLocTupleHavingInFlowSet)) {
NTuple<Location> pcLocTuple =
generateLocTupleRelativeTo(md, paramLocTupleHavingInFlowSet, PCLOC);
- 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);
-
- // add ordering relations s.t. PCLOC is higher than all of parameters with incoming flows
- // and lower than paramters which do not have any incoming flows
- for (Iterator iterator = paramLocTupleHavingInFlowSet.iterator(); iterator.hasNext();) {
- NTuple<Location> paramLocTuple = (NTuple<Location>) iterator.next();
- if (paramLocTuple.size() > pcLocTupleIdx) {
- Descriptor lowerDesc = paramLocTuple.get(pcLocTupleIdx).getLocDescriptor();
- hierarchyGraph.addEdge(pcDesc, lowerDesc);
- }
- }
+ NTuple<Descriptor> pcDescTuple = translateToDescTuple(pcLocTuple);
+
+ // System.out.println("pcLoc=" + pcLocTuple);
- for (Iterator iterator = paramLocTupleNOTHavingInFlowSet.iterator(); iterator.hasNext();) {
- NTuple<Location> paramLocTuple = (NTuple<Location>) iterator.next();
- if (paramLocTuple.size() > pcLocTupleIdx) {
- Descriptor higherDesc = paramLocTuple.get(pcLocTupleIdx).getLocDescriptor();
- hierarchyGraph.addEdge(higherDesc, pcDesc);
+ CompositeLocation curPCLoc = methodSummary.getPCLoc();
+ if (curPCLoc.get(0).isTop() || pcLocTuple.size() > curPCLoc.getSize()) {
+ methodSummary.setPCLoc(new CompositeLocation(pcLocTuple));
+
+ // add ordering relations s.t. PCLOC is higher than all flow nodes except the set of
+ // parameters that do not have incoming flows
+ for (Iterator iterator = fg.getNodeSet().iterator(); iterator.hasNext();) {
+ FlowNode node = (FlowNode) iterator.next();
+
+ if (!paramDescNOTHavingInFlowSet.contains(node.getCurrentDescTuple().get(0))) {
+ fg.addValueFlowEdge(pcDescTuple, node.getDescTuple());
+ }
}
+ fg.getFlowNode(translateToDescTuple(pcLocTuple)).setSkeleton(true);
}
- System.out.println("pcLoc=" + pcLoc);
-
- methodSummary.setPCLoc(new CompositeLocation(pcLocTuple));
}
}
System.out.println("#calculateRETURNLOC= " + md);
// calculate a return location:
// the return location type is lower than all parameters and the location of return values
-
MethodSummary methodSummary = getMethodSummary(md);
-
FlowGraph fg = getFlowGraph(md);
-
Map<Integer, CompositeLocation> mapParamToLoc = methodSummary.getMapParamIdxToInferLoc();
Set<Integer> paramIdxSet = mapParamToLoc.keySet();
// first, generate the set of return value location types that starts
// with 'this' reference
- Set<NTuple<Location>> inferFieldReturnLocSet = new HashSet<NTuple<Location>>();
-
Set<FlowNode> paramFlowNodeFlowingToReturnValueSet = getParamNodeFlowingToReturnValue(md);
- System.out.println("paramFlowNodeFlowingToReturnValueSet="
- + paramFlowNodeFlowingToReturnValueSet);
+ // System.out.println("paramFlowNodeFlowingToReturnValueSet="
+ // + paramFlowNodeFlowingToReturnValueSet);
- Set<NTuple<Location>> locFlowingToReturnValueSet = new HashSet<NTuple<Location>>();
+ Set<NTuple<Location>> tupleToBeHigherThanReturnLocSet = new HashSet<NTuple<Location>>();
for (Iterator iterator = paramFlowNodeFlowingToReturnValueSet.iterator(); iterator.hasNext();) {
FlowNode fn = (FlowNode) iterator.next();
-
NTuple<Descriptor> paramDescTuple = fn.getCurrentDescTuple();
- NTuple<Location> paramLocTuple = translateToLocTuple(md, paramDescTuple);
-
- locFlowingToReturnValueSet.add(paramLocTuple);
+ tupleToBeHigherThanReturnLocSet.add(translateToLocTuple(md, paramDescTuple));
}
Set<FlowNode> returnNodeSet = fg.getReturnNodeSet();
for (Iterator iterator = returnNodeSet.iterator(); iterator.hasNext();) {
FlowNode returnNode = (FlowNode) iterator.next();
NTuple<Descriptor> returnDescTuple = returnNode.getCurrentDescTuple();
- NTuple<Location> returnLocTuple = translateToLocTuple(md, returnDescTuple);
- locFlowingToReturnValueSet.add(returnLocTuple);
+ tupleToBeHigherThanReturnLocSet.add(translateToLocTuple(md, returnDescTuple));
}
- System.out.println("locFlowingToReturnValueSet=" + locFlowingToReturnValueSet);
+ System.out.println("-flow graph's returnNodeSet=" + returnNodeSet);
+ System.out.println("tupleSetToBeHigherThanReturnLoc=" + tupleToBeHigherThanReturnLocSet);
// Here, generates a return location in the method lattice that is lower than the
// locFlowingToReturnValueSet
NTuple<Location> returnLocTuple =
- generateLocTupleRelativeTo(md, locFlowingToReturnValueSet, RLOC);
+ generateLocTupleRelativeTo(md, tupleToBeHigherThanReturnLocSet, RLOC);
- System.out.println("returnLocTuple=" + returnLocTuple);
+ // System.out.println("returnLocTuple=" + returnLocTuple);
+ NTuple<Descriptor> returnDescTuple = translateToDescTuple(returnLocTuple);
+ CompositeLocation curReturnLoc = methodSummary.getRETURNLoc();
+ if (curReturnLoc == null || returnDescTuple.size() > curReturnLoc.getSize()) {
+ methodSummary.setRETURNLoc(new CompositeLocation(returnLocTuple));
- int returnLocTupleIdx = returnLocTuple.size() - 1;
- Location returnLoc = returnLocTuple.get(returnLocTupleIdx);
- Descriptor returnDesc = returnLoc.getLocDescriptor();
- Descriptor enclosingDesc = returnLocTuple.get(returnLocTupleIdx).getDescriptor();
-
- HierarchyGraph hierarchyGraph = getHierarchyGraph(enclosingDesc);
- HNode returnNode = hierarchyGraph.getHNode(returnDesc);
- returnNode.setSkeleton(true);
+ for (Iterator iterator = tupleToBeHigherThanReturnLocSet.iterator(); iterator.hasNext();) {
+ NTuple<Location> higherTuple = (NTuple<Location>) iterator.next();
+ fg.addValueFlowEdge(translateToDescTuple(higherTuple), returnDescTuple);
+ }
+ fg.getFlowNode(returnDescTuple).setSkeleton(true);
- for (Iterator iterator = locFlowingToReturnValueSet.iterator(); iterator.hasNext();) {
- NTuple<Location> locTuple = (NTuple<Location>) iterator.next();
- Descriptor higherDesc = locTuple.get(returnLocTupleIdx).getLocDescriptor();
- hierarchyGraph.addEdge(higherDesc, returnDesc);
}
- methodSummary.setRETURNLoc(new CompositeLocation(returnLocTuple));
-
- // skip: for (Iterator iterator = returnNodeSet.iterator(); iterator.hasNext();) {
- // FlowNode returnNode = (FlowNode) iterator.next();
- //
- // NTuple<Descriptor> returnDescTuple = returnNode.getCurrentDescTuple();
- // NTuple<Location> returnLocTuple = translateToLocTuple(md, returnDescTuple);
- //
- // if (returnLocTuple.get(0).getLocDescriptor().equals(md.getThis())) {
- // // 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(returnLocTuple))
- // && !isGreaterThan(methodLattice, paramInferLoc, inferReturnLoc)) {
- // continue skip;
- // }
- // }
- // inferFieldReturnLocSet.add(returnLocTuple);
- //
- // }
- // }
-
- // if (inferFieldReturnLocSet.size() > 0) {
- //
- // // CompositeLocation returnLoc = getLowest(methodLattice, inferFieldReturnLocSet);
- // CompositeLocation returnLoc = null;
- // 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 void calculateExtraLocations(MethodDescriptor md) {
private NTuple<Location> generateLocTupleRelativeTo(MethodDescriptor md,
Set<NTuple<Location>> paramLocTupleHavingInFlowSet, String locNamePrefix) {
- System.out.println("-generateLocTupleRelativeTo=" + paramLocTupleHavingInFlowSet);
+ // System.out.println("-generateLocTupleRelativeTo=" + paramLocTupleHavingInFlowSet);
NTuple<Location> higherLocTuple = new NTuple<Location>();
Set<NTuple<Location>> paramLocTupleStartedWithThis = new HashSet<NTuple<Location>>();
- for (Iterator iterator = paramLocTupleHavingInFlowSet.iterator(); iterator.hasNext();) {
+ next: for (Iterator iterator = paramLocTupleHavingInFlowSet.iterator(); iterator.hasNext();) {
NTuple<Location> paramLocTuple = (NTuple<Location>) iterator.next();
- if (!paramLocTuple.get(0).getLocDescriptor().equals(thisVarDesc)) {
+ Descriptor paramLocalDesc = paramLocTuple.get(0).getLocDescriptor();
+ if (!paramLocalDesc.equals(thisVarDesc)) {
+
+ Set<FlowNode> inNodeSet = getFlowGraph(md).getIncomingNodeSetByPrefix(paramLocalDesc);
+ for (Iterator iterator2 = inNodeSet.iterator(); iterator2.hasNext();) {
+ FlowNode flowNode = (FlowNode) iterator2.next();
+ if (flowNode.getDescTuple().startsWith(thisVarDesc)) {
+ // System.out.println("paramLocTuple=" + paramLocTuple + " is lower than THIS");
+ continue next;
+ }
+ }
hasParamNotStartedWithThisRef = true;
+
} else if (paramLocTuple.size() > 1) {
paramLocTupleStartedWithThis.add(paramLocTuple);
if (minSize == 0 || minSize > paramLocTuple.size()) {
}
}
- System.out.println("---paramLocTupleStartedWithThis=" + paramLocTupleStartedWithThis);
+ // System.out.println("---paramLocTupleStartedWithThis=" + paramLocTupleStartedWithThis);
Descriptor enclosingDesc = md;
if (hasParamNotStartedWithThisRef) {
// in this case, PCLOC will be the local location
NTuple<Location> paramLocTuple = null;
for (Iterator iterator = paramLocTupleStartedWithThis.iterator(); iterator.hasNext();) {
paramLocTuple = (NTuple<Location>) iterator.next();
- System.out.println("-----paramLocTuple=" + paramLocTuple + " idx=" + idx);
+ // System.out.println("-----paramLocTuple=" + paramLocTuple + " idx=" + idx);
curLoc = paramLocTuple.get(idx);
Descriptor locDesc = curLoc.getLocDescriptor();
locDescSet.add(locDesc);
}
- System.out.println("-----locDescSet=" + locDescSet + " idx=" + idx);
+ // System.out.println("-----locDescSet=" + locDescSet + " idx=" + idx);
if (locDescSet.size() != 1) {
break;
}
Location newLocElement = new Location(curLoc.getDescriptor(), curLoc.getLocDescriptor());
+ System.out.println("newLocElement" + newLocElement);
higherLocTuple.add(newLocElement);
enclosingDesc = getClassTypeDescriptor(curLoc.getLocDescriptor());
}
NameDescriptor pcLocDesc = new NameDescriptor(pcLocIdentifier);
Location newLoc = new Location(enclosingDesc, pcLocDesc);
higherLocTuple.add(newLoc);
-
System.out.println("---new loc tuple=" + higherLocTuple);
return higherLocTuple;
for (; iterator.hasNext();) {
NTuple<Location> curLocTuple = (NTuple<Location>) iterator.next();
if (isHigherThan(curLocTuple, highest)) {
- System.out.println(curLocTuple + " is greater than " + highest);
+ // System.out.println(curLocTuple + " is greater than " + highest);
highest = curLocTuple;
}
}
MethodDescriptor md = (MethodDescriptor) highest.get(0).getDescriptor();
VarDescriptor thisVarDesc = md.getThis();
- System.out.println("highest=" + highest);
+ // 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);
+ // System.out.println("add it to the highest set=" + curLocTuple);
highestSet.add(curLocTuple);
}
}
- private void calculateExtraLocations2(MethodDescriptor md) {
- // calcualte pcloc, returnloc,...
-
- SSJavaLattice<String> methodLattice = getMethodLattice(md);
- MethodLocationInfo methodInfo = getMethodLocationInfo(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);
- }
-
- }
- }
-
- Map<Integer, CompositeLocation> mapParamToLoc = methodInfo.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 all parameters
- String pcLocSymbol = "PCLOC";
-
- Set<CompositeLocation> paramInFlowSet = new HashSet<CompositeLocation>();
-
- for (Iterator iterator = paramIdxSet.iterator(); iterator.hasNext();) {
- Integer paramIdx = (Integer) iterator.next();
-
- FlowNode paramFlowNode = fg.getParamFlowNode(paramIdx);
-
- if (fg.getIncomingFlowNodeSet(paramFlowNode).size() > 0) {
- // parameter has in-value flows
- CompositeLocation inferLoc = mapParamToLoc.get(paramIdx);
- paramInFlowSet.add(inferLoc);
- }
- }
-
- if (paramInFlowSet.size() > 0) {
- CompositeLocation lowestLoc = getLowest(methodLattice, paramInFlowSet);
- assert (lowestLoc != null);
- methodInfo.setPCLoc(lowestLoc);
- }
-
- }
-
- // 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> paramFlowNode = getParamNodeFlowingToReturnValue(md);
- Set<CompositeLocation> inferParamLocSet = new HashSet<CompositeLocation>();
- if (paramFlowNode != null) {
- for (Iterator iterator = paramFlowNode.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 Set<String> getHigherLocSymbolThan(SSJavaLattice<String> lattice, String loc) {
Set<String> higherLocSet = new HashSet<String>();
return false;
}
- private void contributeCalleeFlows(MethodInvokeNode min, MethodDescriptor mdCaller,
- MethodDescriptor mdCallee) {
-
- System.out.println("\n##contributeCalleeFlows callee=" + mdCallee + "TO caller=" + mdCaller);
-
- getSubGlobalFlowGraph(mdCallee);
-
- }
-
private GlobalFlowGraph getSubGlobalFlowGraph(MethodDescriptor md) {
+
+ if (!mapMethodDescriptorToSubGlobalFlowGraph.containsKey(md)) {
+ mapMethodDescriptorToSubGlobalFlowGraph.put(md, new GlobalFlowGraph(md));
+ }
return mapMethodDescriptorToSubGlobalFlowGraph.get(md);
}
// parameters
Set<FlowNode> localReachSet = calleeFlowGraph.getLocalReachFlowNodeSetFrom(paramNode1);
- // System.out.println("-param1=" + paramNode1 + " is higher than param2=" + paramNode2);
+ System.out.println("-param1=" + paramNode1 + " is higher than param2=" + paramNode2);
// System.out.println("-- localReachSet from param1=" + localReachSet);
+ NTuple<Descriptor> paramDescTuple1 = paramNode1.getCurrentDescTuple();
+ NTuple<Descriptor> paramDescTuple2 = paramNode2.getCurrentDescTuple();
+
+ System.out.println("-param1CurTuple=" + paramDescTuple1 + " param2CurTuple="
+ + paramDescTuple2);
+ if (paramDescTuple1.get(0).equals(paramDescTuple2.get(0))) {
+ // if two parameters share the same prefix
+ // it already has been assigned to a composite location
+ // so we don't need to add an additional ordering relation caused by these two
+ // paramters.
+ continue;
+ }
+
if (arg1Tuple.size() > 0 && arg2Tuple.size() > 0 && localReachSet.contains(paramNode2)) {
// need to propagate an ordering relation s.t. arg1 is higher
// than arg2
+ // add a new flow between the corresponding arguments.
+ callerFlowGraph.addValueFlowEdge(arg1Tuple, arg2Tuple);
+ System.out.println("arg1=" + arg1Tuple + " arg2=" + arg2Tuple);
+
// System.out
// .println("-arg1Tuple=" + arg1Tuple + " is higher than arg2Tuple=" + arg2Tuple);
- // otherwise, flows between method/field locations...
- callerFlowGraph.addValueFlowEdge(arg1Tuple, arg2Tuple);
- // System.out.println("arg1=" + arg1Tuple + " arg2=" + arg2Tuple);
-
}
System.out.println();
}
}
- }
- // System.out.println("##\n");
-
- }
-
- private void propagateFlowsToCaller(MethodInvokeNode min, MethodDescriptor mdCaller,
- MethodDescriptor mdCallee) {
-
- System.out.println("\n##PROPAGATE callee=" + mdCallee + "TO caller=" + mdCaller);
-
- // if the parameter A reaches to the parameter B
- // then, add an edge the argument A -> the argument B to the caller's flow
- // 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
- // the parameter.
-
- FlowGraph calleeFlowGraph = getFlowGraph(mdCallee);
- FlowGraph callerFlowGraph = getFlowGraph(mdCaller);
- int numParam = calleeFlowGraph.getNumParameters();
-
- for (int i = 0; i < numParam; i++) {
- for (int k = 0; k < numParam; k++) {
-
- if (i != k) {
-
- FlowNode paramNode1 = calleeFlowGraph.getParamFlowNode(i);
- FlowNode paramNode2 = calleeFlowGraph.getParamFlowNode(k);
-
- System.out.println("param1=" + paramNode1 + " curDescTuple="
- + paramNode1.getCurrentDescTuple());
- System.out.println("param2=" + paramNode2 + " curDescTuple="
- + paramNode2.getCurrentDescTuple());
-
- // TODO: deprecated method
- // NodeTupleSet tupleSetArg1 = getNodeTupleSetByArgIdx(min, i);
- // NodeTupleSet tupleSetArg2 = getNodeTupleSetByArgIdx(min, k);
- NodeTupleSet tupleSetArg1 = null;
- NodeTupleSet tupleSetArg2 = null;
-
- for (Iterator<NTuple<Descriptor>> iter1 = tupleSetArg1.iterator(); iter1.hasNext();) {
- NTuple<Descriptor> arg1Tuple = iter1.next();
-
- for (Iterator<NTuple<Descriptor>> iter2 = tupleSetArg2.iterator(); iter2.hasNext();) {
- NTuple<Descriptor> arg2Tuple = iter2.next();
-
- // check if the callee propagates an ordering constraints through
- // parameters
-
- Set<FlowNode> localReachSet =
- calleeFlowGraph.getLocalReachFlowNodeSetFrom(paramNode1);
-
- if (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);
-
- if (!min.getMethod().isStatic()) {
- // check if this is the case that values flow to/from the
- // current object reference 'this'
-
- NTuple<Descriptor> baseTuple = mapMethodInvokeNodeToBaseTuple.get(min);
- Descriptor baseRef = baseTuple.get(baseTuple.size() - 1);
-
- System.out.println("paramNode1.getCurrentDescTuple()="
- + paramNode1.getCurrentDescTuple());
- // 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
- // is invoked.
-
- if (!paramNode1.getCurrentDescTuple().startsWith(mdCallee.getThis())) {
- // check whether ???
-
- NTuple<Descriptor> param1Prefix =
- calculatePrefixForParam(callerFlowGraph, calleeFlowGraph, min, arg1Tuple,
- 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
- // with 'this' reference to the corresponding parameter
-
- CompositeLocation compLocForParam1 =
- generateCompositeLocation(mdCallee, param1Prefix);
-
- System.out
- .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
- // location
-
- NTuple<Descriptor> translatedParamTuple =
- translateCompositeLocationToCaller(min, compLocForParam1);
-
- // TODO : check if the arg >= the tranlated parameter
-
- System.out.println("add a flow edge= " + arg1Tuple + "->"
- + translatedParamTuple);
- callerFlowGraph.addValueFlowEdge(arg1Tuple, translatedParamTuple);
-
- continue;
-
- }
-
- } else {
- // param1 has already been assigned a composite location
-
- System.out.println("--param1 has already been assigned a composite location");
- CompositeLocation compLocForParam1 = paramNode1.getCompositeLocation();
- NTuple<Descriptor> translatedParamTuple =
- translateCompositeLocationToCaller(min, compLocForParam1);
-
- // TODO : check if the arg >= the tranlated parameter
-
- System.out.println("add a flow edge= " + arg1Tuple + "->"
- + translatedParamTuple);
- callerFlowGraph.addValueFlowEdge(arg1Tuple, translatedParamTuple);
-
- continue;
-
- }
-
- } else if (arg1Tuple.size() == 1 && arg1Tuple.get(0).equals(baseRef)) {
- // in this case, the callee flow causes a caller flow
- // originated from the object
- // whose
- // method is invoked.
-
- System.out.println("###FROM CASE");
-
- if (!paramNode2.getCurrentDescTuple().startsWith(mdCallee.getThis())) {
-
- NTuple<Descriptor> param2Prefix =
- calculatePrefixForParam(callerFlowGraph, calleeFlowGraph, min, arg2Tuple,
- paramNode2);
-
- 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
-
- CompositeLocation compLocForParam2 =
- generateCompositeLocation(mdCallee, param2Prefix);
-
- // System.out.println("set comp loc=" + compLocForParam2
- // +
- // " to " + paramNode2);
- paramNode1.setCompositeLocation(compLocForParam2);
- continue;
- }
- }
-
- }
- }
-
- // otherwise, flows between method/field locations...
- callerFlowGraph.addValueFlowEdge(arg1Tuple, arg2Tuple);
- System.out.println("arg1=" + arg1Tuple + " arg2=" + arg2Tuple);
-
- }
+ }
- }
+ // if a parameter has a composite location and the first element of the parameter location
+ // matches the callee's 'this'
+ // we have a more specific constraint: the caller's corresponding argument is higher than the
+ // parameter location which is translated into the caller
- }
- System.out.println();
+ for (int idx = 0; idx < numParam; idx++) {
+ FlowNode paramNode = calleeFlowGraph.getParamFlowNode(idx);
+ CompositeLocation compLoc = paramNode.getCompositeLocation();
+ if (compLoc != null && compLoc.get(0).getLocDescriptor().equals(min.getMethod().getThis())) {
+ System.out.println("$$$COMPLOC CASE=" + compLoc);
+ NTuple<Descriptor> argTuple = getNodeTupleByArgIdx(min, idx);
+ NTuple<Descriptor> translatedParamTuple =
+ translateCompositeLocationToCaller(idx, min, compLoc);
+ System.out.println("add a flow edge= " + argTuple + "->" + translatedParamTuple);
+ callerFlowGraph.addValueFlowEdge(argTuple, translatedParamTuple);
+
+ Set<NTuple<Location>> pcLocTupleSet = getPCLocTupleSet(min);
+ for (Iterator iterator = pcLocTupleSet.iterator(); iterator.hasNext();) {
+ NTuple<Location> pcLocTuple = (NTuple<Location>) iterator.next();
+ callerFlowGraph.addValueFlowEdge(translateToDescTuple(pcLocTuple), translatedParamTuple);
}
+
}
}
- System.out.println("##\n");
+
}
- private NTuple<Descriptor> translateCompositeLocationToCaller(MethodInvokeNode min,
+ private NTuple<Descriptor> translateCompositeLocationToCaller(int idx, MethodInvokeNode min,
CompositeLocation compLocForParam1) {
+
NTuple<Descriptor> baseTuple = mapMethodInvokeNodeToBaseTuple.get(min);
NTuple<Descriptor> tuple = new NTuple<Descriptor>();
-
for (int i = 0; i < baseTuple.size(); i++) {
tuple.add(baseTuple.get(i));
}
- for (int i = 1; i < compLocForParam1.getSize(); i++) {
+ for (int i = baseTuple.size(); i < compLocForParam1.getSize(); i++) {
Location loc = compLocForParam1.get(i);
tuple.add(loc.getLocDescriptor());
}
return newCompLoc;
}
- private NTuple<Descriptor> calculatePrefixForParam(FlowGraph callerFlowGraph,
- FlowGraph calleeFlowGraph, MethodInvokeNode min, NTuple<Descriptor> arg1Tuple,
- FlowNode paramNode1) {
-
- NTuple<Descriptor> baseTuple = mapMethodInvokeNodeToBaseTuple.get(min);
- Descriptor baseRef = baseTuple.get(baseTuple.size() - 1);
- System.out.println("baseRef=" + baseRef);
-
- FlowNode flowNodeArg1 = callerFlowGraph.getFlowNode(arg1Tuple);
- List<NTuple<Descriptor>> callerPrefixList = calculatePrefixList(callerFlowGraph, flowNodeArg1);
- System.out.println("callerPrefixList=" + callerPrefixList);
-
- List<NTuple<Descriptor>> prefixList = calculatePrefixList(calleeFlowGraph, paramNode1);
- System.out.println("###prefixList from node=" + paramNode1 + " =" + prefixList);
-
- List<NTuple<Descriptor>> calleePrefixList =
- translatePrefixListToCallee(baseRef, min.getMethod(), callerPrefixList);
-
- System.out.println("calleePrefixList=" + calleePrefixList);
-
- Set<FlowNode> reachNodeSetFromParam1 = calleeFlowGraph.getReachFlowNodeSetFrom(paramNode1);
- System.out.println("reachNodeSetFromParam1=" + reachNodeSetFromParam1);
-
- for (int i = 0; i < calleePrefixList.size(); i++) {
- NTuple<Descriptor> curPrefix = calleePrefixList.get(i);
- Set<NTuple<Descriptor>> reachableCommonPrefixSet = new HashSet<NTuple<Descriptor>>();
-
- for (Iterator iterator2 = reachNodeSetFromParam1.iterator(); iterator2.hasNext();) {
- FlowNode reachNode = (FlowNode) iterator2.next();
- if (reachNode.getCurrentDescTuple().startsWith(curPrefix)) {
- reachableCommonPrefixSet.add(reachNode.getCurrentDescTuple());
- }
- }
-
- if (!reachableCommonPrefixSet.isEmpty()) {
- System.out.println("###REACHABLECOMONPREFIX=" + reachableCommonPrefixSet
- + " with curPreFix=" + curPrefix);
- return curPrefix;
- }
-
- }
-
- return null;
- }
-
private List<NTuple<Descriptor>> translatePrefixListToCallee(Descriptor baseRef,
MethodDescriptor mdCallee, List<NTuple<Descriptor>> callerPrefixList) {
if (curDescriptor instanceof VarDescriptor) {
enclosingDescriptor = md.getClassDesc();
+ } else if (curDescriptor instanceof FieldDescriptor) {
+ enclosingDescriptor = ((FieldDescriptor) curDescriptor).getClassDescriptor();
} else if (curDescriptor instanceof NameDescriptor) {
// it is "GLOBAL LOC" case!
enclosingDescriptor = GLOBALDESC;
- } else if (curDescriptor instanceof InterDescriptor) {
- enclosingDescriptor = null;
} else {
- enclosingDescriptor = ((FieldDescriptor) curDescriptor).getClassDescriptor();
+ enclosingDescriptor = null;
}
}
}
// _debug_printGraph();
- methodDescList = (LinkedList<MethodDescriptor>) toanalyze_methodDescList.clone();
+ }
+
+ private void constructGlobalFlowGraph() {
+ LinkedList<MethodDescriptor> methodDescList =
+ (LinkedList<MethodDescriptor>) toanalyze_methodDescList.clone();
while (!methodDescList.isEmpty()) {
MethodDescriptor md = methodDescList.removeLast();
System.out.println("SSJAVA: Constructing a sub global flow graph: " + md);
GlobalFlowGraph subGlobalFlowGraph = constructSubGlobalFlowGraph(getFlowGraph(md));
- mapMethodDescriptorToSubGlobalFlowGraph.put(md, subGlobalFlowGraph);
// TODO
System.out.println("-add Value Flows From CalleeSubGlobalFlowGraph");
addValueFlowsFromCalleeSubGlobalFlowGraph(md, subGlobalFlowGraph);
- subGlobalFlowGraph.writeGraph("_SUBGLOBAL");
+ // subGlobalFlowGraph.writeGraph("_SUBGLOBAL");
- System.out.println("-propagate Flows From Callees With No CompositeLocation");
- propagateFlowsFromCalleesWithNoCompositeLocation(md);
+ // System.out.println("-propagate Flows From Callees With No CompositeLocation");
+ // propagateFlowsFromCalleesWithNoCompositeLocation(md);
}
}
-
}
private Set<MethodInvokeNode> getMethodInvokeNodeSet(MethodDescriptor md) {
return mapMethodDescriptorToMethodInvokeNodeSet.get(md);
}
- private void constructSubGlobalFlowGraph(MethodDescriptor md) {
-
- FlowGraph flowGraph = getFlowGraph(md);
-
- Set<MethodInvokeNode> setMethodInvokeNode = getMethodInvokeNodeSet(md);
-
- for (Iterator<MethodInvokeNode> iter = setMethodInvokeNode.iterator(); iter.hasNext();) {
- MethodInvokeNode min = iter.next();
- propagateFlowsFromMethodInvokeNode(md, min);
- }
-
- }
-
- private void propagateFlowsFromMethodInvokeNode(MethodDescriptor mdCaller, MethodInvokeNode min) {
- // the transformation for a call site propagates flows through parameters
- // if the method is virtual, it also grab all relations from any possible
- // callees
-
- MethodDescriptor mdCallee = min.getMethod();
- Set<MethodDescriptor> setPossibleCallees = new HashSet<MethodDescriptor>();
- if (mdCallee.isStatic()) {
- setPossibleCallees.add(mdCallee);
- } else {
- Set<MethodDescriptor> calleeSet = ssjava.getCallGraph().getMethods(mdCallee);
- // removes method descriptors that are not invoked by the caller
- calleeSet.retainAll(mapMethodToCalleeSet.get(mdCaller));
- setPossibleCallees.addAll(calleeSet);
- }
-
- for (Iterator iterator2 = setPossibleCallees.iterator(); iterator2.hasNext();) {
- MethodDescriptor possibleMdCallee = (MethodDescriptor) iterator2.next();
- contributeCalleeFlows(min, mdCaller, possibleMdCallee);
- }
-
- }
-
- private void assignCompositeLocation(MethodDescriptor md) {
-
- FlowGraph flowGraph = getFlowGraph(md);
-
- Set<FlowNode> nodeSet = flowGraph.getNodeSet();
-
- next: for (Iterator iterator = nodeSet.iterator(); iterator.hasNext();) {
- FlowNode flowNode = (FlowNode) iterator.next();
-
- // assign a composite location only to the local variable
- if (flowNode.getCurrentDescTuple().size() == 1) {
-
- List<NTuple<Descriptor>> prefixList = calculatePrefixList(flowGraph, flowNode);
- Set<FlowNode> reachSet = flowGraph.getReachFlowNodeSetFrom(flowNode);
-
- for (int i = 0; i < prefixList.size(); i++) {
- NTuple<Descriptor> curPrefix = prefixList.get(i);
- Set<NTuple<Descriptor>> reachableCommonPrefixSet = new HashSet<NTuple<Descriptor>>();
-
- for (Iterator iterator2 = reachSet.iterator(); iterator2.hasNext();) {
- FlowNode reachNode = (FlowNode) iterator2.next();
- if (reachNode.getCurrentDescTuple().startsWith(curPrefix)) {
- reachableCommonPrefixSet.add(reachNode.getCurrentDescTuple());
- }
- }
-
- if (!reachableCommonPrefixSet.isEmpty()) {
- System.out.println("NEED TO ASSIGN COMP LOC TO " + flowNode + " with prefix="
- + curPrefix);
- CompositeLocation newCompLoc = generateCompositeLocation(md, curPrefix);
- flowNode.setCompositeLocation(newCompLoc);
- continue next;
- }
-
- }
- }
-
- }
-
- }
-
private void propagateFlowsFromCalleesWithNoCompositeLocation(MethodDescriptor mdCaller) {
// the transformation for a call site propagates flows through parameters
}
- private void propagateFlowsFromCallees(MethodDescriptor mdCaller) {
-
- // the transformation for a call site propagates flows through parameters
- // if the method is virtual, it also grab all relations from any possible
- // callees
-
- Set<MethodInvokeNode> setMethodInvokeNode =
- mapMethodDescriptorToMethodInvokeNodeSet.get(mdCaller);
-
- if (setMethodInvokeNode != null) {
-
- for (Iterator iterator = setMethodInvokeNode.iterator(); iterator.hasNext();) {
- MethodInvokeNode min = (MethodInvokeNode) iterator.next();
- MethodDescriptor mdCallee = min.getMethod();
- Set<MethodDescriptor> setPossibleCallees = new HashSet<MethodDescriptor>();
- if (mdCallee.isStatic()) {
- setPossibleCallees.add(mdCallee);
- } else {
- Set<MethodDescriptor> calleeSet = ssjava.getCallGraph().getMethods(mdCallee);
- // removes method descriptors that are not invoked by the caller
- calleeSet.retainAll(mapMethodToCalleeSet.get(mdCaller));
- setPossibleCallees.addAll(calleeSet);
- }
-
- for (Iterator iterator2 = setPossibleCallees.iterator(); iterator2.hasNext();) {
- MethodDescriptor possibleMdCallee = (MethodDescriptor) iterator2.next();
- propagateFlowsToCaller(min, mdCaller, possibleMdCallee);
- }
-
- }
- }
-
- }
-
private void analyzeMethodBody(ClassDescriptor cd, MethodDescriptor md) {
BlockNode bn = state.getMethodBody(md);
NodeTupleSet implicitFlowTupleSet = new NodeTupleSet();
newImplicitTupleSet.addTupleSet(implicitFlowTupleSet);
newImplicitTupleSet.addTupleSet(condTupleNode);
- if (newImplicitTupleSet.size() > 1) {
+ if (needToGenerateInterLoc(newImplicitTupleSet)) {
// 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();
private void analyzeFlowReturnNode(MethodDescriptor md, SymbolTable nametable, ReturnNode rn,
NodeTupleSet implicitFlowTupleSet) {
+ // System.out.println("-analyzeFlowReturnNode=" + rn.printNode(0));
ExpressionNode returnExp = rn.getReturnExpression();
if (returnExp != null) {
// add tuples corresponding to the current implicit flows
currentFlowTupleSet.addTupleSet(implicitFlowTupleSet);
- if (currentFlowTupleSet.size() > 1) {
+ // System.out.println("---currentFlowTupleSet=" + currentFlowTupleSet);
+
+ if (needToGenerateInterLoc(currentFlowTupleSet)) {
FlowNode meetNode = fg.createIntermediateNode();
for (Iterator iterator = currentFlowTupleSet.iterator(); iterator.hasNext();) {
NTuple<Descriptor> currentFlowTuple = (NTuple<Descriptor>) iterator.next();
fg.addValueFlowEdge(currentFlowTuple, meetNode.getDescTuple());
}
fg.addReturnFlowNode(meetNode.getDescTuple());
- } else if (currentFlowTupleSet.size() == 1) {
- NTuple<Descriptor> tuple = currentFlowTupleSet.iterator().next();
- fg.addReturnFlowNode(tuple);
+ } else {
+ // currentFlowTupleSet = removeLiteralTuple(currentFlowTupleSet);
+ for (Iterator iterator = currentFlowTupleSet.iterator(); iterator.hasNext();) {
+ NTuple<Descriptor> currentFlowTuple = (NTuple<Descriptor>) iterator.next();
+ fg.addReturnFlowNode(currentFlowTuple);
+ }
}
}
}
+ private NodeTupleSet removeLiteralTuple(NodeTupleSet inSet) {
+ NodeTupleSet tupleSet = new NodeTupleSet();
+ for (Iterator<NTuple<Descriptor>> iter = inSet.iterator(); iter.hasNext();) {
+ NTuple<Descriptor> tuple = iter.next();
+ if (!tuple.get(0).equals(LITERALDESC)) {
+ tupleSet.addTuple(tuple);
+ }
+ }
+ return tupleSet;
+ }
+
+ private boolean needToGenerateInterLoc(NodeTupleSet tupleSet) {
+ int size = 0;
+ for (Iterator<NTuple<Descriptor>> iter = tupleSet.iterator(); iter.hasNext();) {
+ NTuple<Descriptor> descTuple = iter.next();
+ if (!descTuple.get(0).equals(LITERALDESC)) {
+ size++;
+ }
+ }
+ if (size > 1) {
+ return true;
+ } else {
+ return false;
+ }
+ }
+
private void analyzeFlowLoopNode(MethodDescriptor md, SymbolTable nametable, LoopNode ln,
NodeTupleSet implicitFlowTupleSet) {
newImplicitTupleSet.addTupleSet(implicitFlowTupleSet);
newImplicitTupleSet.addTupleSet(condTupleNode);
- if (newImplicitTupleSet.size() > 1) {
+ if (needToGenerateInterLoc(newImplicitTupleSet)) {
// 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();) {
analyzeFlowExpressionNode(md, bn.getVarTable(), ln.getCondition(), condTupleNode, null,
implicitFlowTupleSet, false);
- // ///////////
- NTuple<Descriptor> interTuple = getFlowGraph(md).createIntermediateNode().getDescTuple();
+ NodeTupleSet newImplicitTupleSet = new NodeTupleSet();
+ newImplicitTupleSet.addTupleSet(implicitFlowTupleSet);
+ newImplicitTupleSet.addTupleSet(condTupleNode);
- for (Iterator<NTuple<Descriptor>> idxIter = condTupleNode.iterator(); idxIter.hasNext();) {
- NTuple<Descriptor> tuple = idxIter.next();
- addFlowGraphEdge(md, tuple, interTuple);
- }
+ if (needToGenerateInterLoc(newImplicitTupleSet)) {
+ // 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();
+ addFlowGraphEdge(md, tuple, interTuple);
+ }
+ newImplicitTupleSet.clear();
+ newImplicitTupleSet.addTuple(interTuple);
- for (Iterator<NTuple<Descriptor>> idxIter = implicitFlowTupleSet.iterator(); idxIter
- .hasNext();) {
- NTuple<Descriptor> tuple = idxIter.next();
- addFlowGraphEdge(md, tuple, interTuple);
}
- NodeTupleSet newImplicitSet = new NodeTupleSet();
- newImplicitSet.addTuple(interTuple);
- analyzeFlowBlockNode(md, bn.getVarTable(), ln.getUpdate(), newImplicitSet);
- analyzeFlowBlockNode(md, bn.getVarTable(), ln.getBody(), newImplicitSet);
+ // ///////////
+ // NTuple<Descriptor> interTuple = getFlowGraph(md).createIntermediateNode().getDescTuple();
+ //
+ // 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
+ // .hasNext();) {
+ // NTuple<Descriptor> tuple = idxIter.next();
+ // addFlowGraphEdge(md, tuple, interTuple);
+ // }
+ //
+ // NodeTupleSet newImplicitSet = new NodeTupleSet();
+ // newImplicitSet.addTuple(interTuple);
+ analyzeFlowBlockNode(md, bn.getVarTable(), ln.getUpdate(), newImplicitTupleSet);
+ analyzeFlowBlockNode(md, bn.getVarTable(), ln.getBody(), newImplicitTupleSet);
// ///////////
// condTupleNode.addTupleSet(implicitFlowTupleSet);
newImplicitTupleSet.addTupleSet(implicitFlowTupleSet);
newImplicitTupleSet.addTupleSet(condTupleNode);
- // System.out.println("condTupleNode=" + condTupleNode);
- // System.out.println("implicitFlowTupleSet=" + implicitFlowTupleSet);
- // System.out.println("newImplicitTupleSet=" + newImplicitTupleSet);
+ System.out.println("$$$GGGcondTupleNode=" + condTupleNode.getGlobalLocTupleSet());
- if (newImplicitTupleSet.size() > 1) {
+ // System.out.println("-condTupleNode=" + condTupleNode);
+ // System.out.println("-implicitFlowTupleSet=" + implicitFlowTupleSet);
+ // System.out.println("-newImplicitTupleSet=" + newImplicitTupleSet);
+ if (needToGenerateInterLoc(newImplicitTupleSet)) {
+ System.out.println("2");
// 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();) {
newImplicitTupleSet.addTuple(interTuple);
}
+ GlobalFlowGraph globalFlowGraph = getSubGlobalFlowGraph(md);
+ for (Iterator<NTuple<Location>> iterator = condTupleNode.globalIterator(); iterator.hasNext();) {
+ NTuple<Location> calleeReturnLocTuple = iterator.next();
+ for (Iterator<NTuple<Descriptor>> iter2 = newImplicitTupleSet.iterator(); iter2.hasNext();) {
+ NTuple<Descriptor> callerImplicitTuple = iter2.next();
+ globalFlowGraph.addValueFlowEdge(calleeReturnLocTuple,
+ translateToLocTuple(md, callerImplicitTuple));
+ }
+ }
+
analyzeFlowBlockNode(md, nametable, isn.getTrueBlock(), newImplicitTupleSet);
if (isn.getFalseBlock() != null) {
// creates edges from RHS to LHS
NTuple<Descriptor> interTuple = null;
- if (nodeSetRHS.size() > 1) {
+ if (needToGenerateInterLoc(nodeSetRHS)) {
+
interTuple = getFlowGraph(md).createIntermediateNode().getDescTuple();
}
addFlowGraphEdge(md, implicitTuple, tupleLHS);
}
+ GlobalFlowGraph globalFlowGraph = getSubGlobalFlowGraph(md);
+ for (Iterator<NTuple<Location>> iterator = nodeSetRHS.globalIterator(); iterator.hasNext();) {
+ NTuple<Location> calleeReturnLocTuple = iterator.next();
+ globalFlowGraph.addValueFlowEdge(calleeReturnLocTuple, translateToLocTuple(md, tupleLHS));
+ }
+
}
}
// note that expression node can create more than one flow node
// nodeSet contains of flow nodes
// base is always assigned to null except the case of a name node!
-
+ System.out.println("en=" + en.printNode(0));
NTuple<Descriptor> flowTuple;
switch (en.kind()) {
break;
case Kind.LiteralNode:
- analyzeLiteralNode(md, nametable, (LiteralNode) en);
+ analyzeFlowLiteralNode(md, nametable, (LiteralNode) en, nodeSet);
break;
case Kind.MethodInvokeNode:
// checkOffsetNode(md, nametable, (OffsetNode)en, td);
// return null;
+ }
+ if (nodeSet != null) {
+ System.out.println("#EXP nodeGLOBALSet=" + nodeSet.getGlobalLocTupleSet());
}
return null;
return mapMethodDescToParamNodeFlowsToReturnValue.get(md);
}
- private void analyzeFlowMethodInvokeNode(MethodDescriptor md, SymbolTable nametable,
+ private Set<NTuple<Location>> getPCLocTupleSet(MethodInvokeNode min) {
+ if (!mapMethodInvokeNodeToPCLocTupleSet.containsKey(min)) {
+ mapMethodInvokeNodeToPCLocTupleSet.put(min, new HashSet<NTuple<Location>>());
+ }
+ return mapMethodInvokeNodeToPCLocTupleSet.get(min);
+ }
+
+ private void analyzeFlowMethodInvokeNode(MethodDescriptor mdCaller, SymbolTable nametable,
MethodInvokeNode min, NodeTupleSet nodeSet, NodeTupleSet implicitFlowTupleSet) {
System.out.println("analyzeFlowMethodInvokeNode=" + min.printNode(0));
+ Set<NTuple<Location>> pcLocTupleSet = getPCLocTupleSet(min);
+ for (Iterator iterator = implicitFlowTupleSet.iterator(); iterator.hasNext();) {
+ NTuple<Descriptor> pcDescTuple = (NTuple<Descriptor>) iterator.next();
+ if (!pcDescTuple.get(0).equals(LITERALDESC)) {
+ // here we don't need to add the literal value as a PC location
+ pcLocTupleSet.add(translateToLocTuple(mdCaller, pcDescTuple));
+ }
+ }
+
mapMethodInvokeNodeToArgIdxMap.put(min, new HashMap<Integer, NTuple<Descriptor>>());
if (nodeSet == null) {
nodeSet = new NodeTupleSet();
}
- MethodDescriptor calleeMethodDesc = min.getMethod();
+ MethodDescriptor mdCallee = min.getMethod();
NameDescriptor baseName = min.getBaseName();
boolean isSystemout = false;
isSystemout = baseName.getSymbol().equals("System.out");
}
- if (!ssjava.isSSJavaUtil(calleeMethodDesc.getClassDesc())
- && !ssjava.isTrustMethod(calleeMethodDesc) && !isSystemout) {
+ if (!ssjava.isSSJavaUtil(mdCallee.getClassDesc()) && !ssjava.isTrustMethod(mdCallee)
+ && !isSystemout) {
- addMapCallerMethodDescToMethodInvokeNodeSet(md, min);
+ addMapCallerMethodDescToMethodInvokeNodeSet(mdCaller, min);
- FlowGraph calleeFlowGraph = getFlowGraph(calleeMethodDesc);
+ FlowGraph calleeFlowGraph = getFlowGraph(mdCallee);
+ System.out.println("mdCallee=" + mdCallee);
Set<FlowNode> calleeReturnSet = calleeFlowGraph.getReturnNodeSet();
- // System.out.println("-calleeReturnSet=" + calleeReturnSet);
+ System.out.println("---calleeReturnSet=" + calleeReturnSet);
+
+ // when generating the global flow graph,
+ // we need to add ordering relations from the set of callee return loc tuple to LHS of the
+ // caller assignment
+ for (Iterator iterator = calleeReturnSet.iterator(); iterator.hasNext();) {
+ FlowNode calleeReturnNode = (FlowNode) iterator.next();
+ NTuple<Location> calleeReturnLocTuple =
+ translateToLocTuple(mdCallee, calleeReturnNode.getDescTuple());
+ nodeSet.addGlobalFlowTuple(calleeReturnLocTuple);
+ }
+
+ NodeTupleSet tupleSet = new NodeTupleSet();
if (min.getExpression() != null) {
NodeTupleSet baseNodeSet = new NodeTupleSet();
- analyzeFlowExpressionNode(md, nametable, min.getExpression(), baseNodeSet, null,
+ analyzeFlowExpressionNode(mdCaller, nametable, min.getExpression(), baseNodeSet, null,
implicitFlowTupleSet, false);
assert (baseNodeSet.size() == 1);
for (Iterator iterator = calleeReturnSet.iterator(); iterator.hasNext();) {
FlowNode returnNode = (FlowNode) iterator.next();
NTuple<Descriptor> returnDescTuple = returnNode.getDescTuple();
- if (returnDescTuple.startsWith(calleeMethodDesc.getThis())) {
+ if (returnDescTuple.startsWith(mdCallee.getThis())) {
// the location type of the return value is started with 'this'
// reference
NTuple<Descriptor> inFlowTuple = new NTuple<Descriptor>(baseTuple.getList());
inFlowTuple.addAll(returnDescTuple.subList(1, returnDescTuple.size()));
- nodeSet.addTuple(inFlowTuple);
+ // nodeSet.addTuple(inFlowTuple);
+ tupleSet.addTuple(inFlowTuple);
} else {
// TODO
Set<FlowNode> inFlowSet = calleeFlowGraph.getIncomingFlowNodeSet(returnNode);
// System.out.println("inFlowSet=" + inFlowSet + " from retrunNode=" + returnNode);
for (Iterator iterator2 = inFlowSet.iterator(); iterator2.hasNext();) {
FlowNode inFlowNode = (FlowNode) iterator2.next();
- if (inFlowNode.getDescTuple().startsWith(calleeMethodDesc.getThis())) {
- nodeSet.addTupleSet(baseNodeSet);
+ if (inFlowNode.getDescTuple().startsWith(mdCallee.getThis())) {
+ // nodeSet.addTupleSet(baseNodeSet);
+ tupleSet.addTupleSet(baseNodeSet);
+
}
}
}
}
}
-
// analyze parameter flows
if (min.numArgs() > 0) {
ExpressionNode en = min.getArg(i);
int idx = i + offset;
NodeTupleSet argTupleSet = new NodeTupleSet();
- analyzeFlowExpressionNode(md, nametable, en, argTupleSet, false);
+ analyzeFlowExpressionNode(mdCaller, nametable, en, argTupleSet, false);
// if argument is liternal node, argTuple is set to NULL
NTuple<Descriptor> argTuple = new NTuple<Descriptor>();
- if (argTupleSet.size() > 1) {
+ if (needToGenerateInterLoc(argTupleSet)) {
NTuple<Descriptor> interTuple =
- getFlowGraph(md).createIntermediateNode().getDescTuple();
+ getFlowGraph(mdCaller).createIntermediateNode().getDescTuple();
for (Iterator<NTuple<Descriptor>> idxIter = argTupleSet.iterator(); idxIter.hasNext();) {
NTuple<Descriptor> tuple = idxIter.next();
- addFlowGraphEdge(md, tuple, interTuple);
+ addFlowGraphEdge(mdCaller, tuple, interTuple);
}
argTuple = interTuple;
} else if (argTupleSet.size() == 1) {
argTuple = new NTuple<Descriptor>();
}
+ if (argTuple.size() > 0 && argTuple.get(argTuple.size() - 1).equals(LITERALDESC)) {
+ argTuple = new NTuple<Descriptor>();
+ }
+
+ // if an argument is static value
+ // we need to create an itermediate node so that we could assign a composite location to
+ // that node if needed
+ System.out.println("argTuple=" + argTuple);
+ if (argTuple.size() > 0 && argTuple.get(0).equals(GLOBALDESC)) {
+ System.out.println("***GLOBAL ARG TUPLE CASE=" + argTuple);
+ NTuple<Descriptor> interTuple =
+ getFlowGraph(mdCaller).createIntermediateNode().getDescTuple();
+ addFlowGraphEdge(mdCaller, argTuple, interTuple);
+ argTuple = interTuple;
+ }
+
addArgIdxMap(min, idx, argTuple);
FlowNode paramNode = calleeFlowGraph.getParamFlowNode(idx);
+
+ // check whether a param node in the callee graph has incoming flows
+ // if it has incoming flows, the corresponding arg should be lower than the current PC
+ // Descriptor prefix = paramNode.getDescTuple().get(0);
+ // if (calleeFlowGraph.getIncomingNodeSetByPrefix(prefix).size() > 0) {
+ // for (Iterator<NTuple<Descriptor>> iterator = implicitFlowTupleSet.iterator(); iterator
+ // .hasNext();) {
+ // NTuple<Descriptor> pcTuple = iterator.next();
+ // System.out.println("add edge pcTuple =" + pcTuple + " -> " + argTuple);
+ // addFlowGraphEdge(md, pcTuple, argTuple);
+ // }
+ // }
+
if (hasInFlowTo(calleeFlowGraph, paramNode, calleeReturnSet)
- || calleeMethodDesc.getModifiers().isNative()) {
- addParamNodeFlowingToReturnValue(calleeMethodDesc, paramNode);
- nodeSet.addTupleSet(argTupleSet);
+ || mdCallee.getModifiers().isNative()) {
+ addParamNodeFlowingToReturnValue(mdCallee, paramNode);
+ // nodeSet.addTupleSet(argTupleSet);
+ tupleSet.addTupleSet(argTupleSet);
}
}
}
+ if (mdCallee.getReturnType() != null && !mdCallee.getReturnType().isVoid()) {
+ FlowReturnNode setNode = getFlowGraph(mdCaller).createReturnNode(min);
+ nodeSet.addTuple(setNode.getDescTuple());
+ }
+
// propagateFlowsFromCallee(min, md, min.getMethod());
System.out.println("min nodeSet=" + nodeSet);
// Set<FlowNode> reachableSet = fg.getReachFlowNodeSetFrom(inNode);
Set<FlowNode> reachableSet = fg.getReachableSetFrom(inNode.getDescTuple());
- System.out.println("inNode=" + inNode + " reachalbeSet=" + reachableSet);
+ // System.out.println("inNode=" + inNode + " reachalbeSet=" + reachableSet);
for (Iterator iterator = reachableSet.iterator(); iterator.hasNext();) {
FlowNode fn = (FlowNode) iterator.next();
mapIdxToTuple.put(new Integer(idx), argTuple);
}
- private void analyzeLiteralNode(MethodDescriptor md, SymbolTable nametable, LiteralNode en) {
-
+ private void analyzeFlowLiteralNode(MethodDescriptor md, SymbolTable nametable, LiteralNode en,
+ NodeTupleSet nodeSet) {
+ NTuple<Descriptor> tuple = new NTuple<Descriptor>();
+ tuple.add(LITERALDESC);
+ nodeSet.addTuple(tuple);
}
private void analyzeFlowArrayAccessNode(MethodDescriptor md, SymbolTable nametable,
ArrayAccessNode aan, NodeTupleSet nodeSet, boolean isLHS) {
+ // System.out.println("analyzeFlowArrayAccessNode aan=" + aan.printNode(0));
+ String currentArrayAccessNodeExpStr = aan.printNode(0);
+ arrayAccessNodeStack.push(aan.printNode(0));
+
+ // System.out.println("-exp=" + aan.getExpression().printNode(0));
NodeTupleSet expNodeTupleSet = new NodeTupleSet();
NTuple<Descriptor> base =
analyzeFlowExpressionNode(md, nametable, aan.getExpression(), expNodeTupleSet, isLHS);
NodeTupleSet idxNodeTupleSet = new NodeTupleSet();
analyzeFlowExpressionNode(md, nametable, aan.getIndex(), idxNodeTupleSet, isLHS);
+ arrayAccessNodeStack.pop();
+
if (isLHS) {
// need to create an edge from idx to array
for (Iterator<NTuple<Descriptor>> idxIter = idxNodeTupleSet.iterator(); idxIter.hasNext();) {
}
}
+ GlobalFlowGraph globalFlowGraph = getSubGlobalFlowGraph(md);
+ for (Iterator<NTuple<Location>> iterator = idxNodeTupleSet.globalIterator(); iterator
+ .hasNext();) {
+ NTuple<Location> calleeReturnLocTuple = iterator.next();
+ for (Iterator<NTuple<Descriptor>> arrIter = expNodeTupleSet.iterator(); arrIter.hasNext();) {
+ NTuple<Descriptor> arrTuple = arrIter.next();
+ globalFlowGraph.addValueFlowEdge(calleeReturnLocTuple, translateToLocTuple(md, arrTuple));
+ }
+ }
+
nodeSet.addTupleSet(expNodeTupleSet);
} else {
- nodeSet.addTupleSet(expNodeTupleSet);
- nodeSet.addTupleSet(idxNodeTupleSet);
+
+ NodeTupleSet nodeSetArrayAccessExp = new NodeTupleSet();
+
+ nodeSetArrayAccessExp.addTupleSet(expNodeTupleSet);
+ nodeSetArrayAccessExp.addTupleSet(idxNodeTupleSet);
+
+ if (arrayAccessNodeStack.isEmpty()
+ || !arrayAccessNodeStack.peek().startsWith(currentArrayAccessNodeExpStr)) {
+
+ if (needToGenerateInterLoc(nodeSetArrayAccessExp)) {
+ NTuple<Descriptor> interTuple = getFlowGraph(md).createIntermediateNode().getDescTuple();
+
+ for (Iterator<NTuple<Descriptor>> iter = nodeSetArrayAccessExp.iterator(); iter.hasNext();) {
+ NTuple<Descriptor> higherTuple = iter.next();
+ addFlowGraphEdge(md, higherTuple, interTuple);
+ }
+ nodeSetArrayAccessExp.clear();
+ nodeSetArrayAccessExp.addTuple(interTuple);
+ }
+ }
+
+ nodeSet.addGlobalFlowTupleSet(idxNodeTupleSet.getGlobalLocTupleSet());
+ nodeSet.addTupleSet(nodeSetArrayAccessExp);
+
}
+
}
private void analyzeCreateObjectNode(MethodDescriptor md, SymbolTable nametable,
// there are two operands
nodeSet.addTupleSet(leftOpSet);
nodeSet.addTupleSet(rightOpSet);
+
+ nodeSet.addGlobalFlowTupleSet(leftOpSet.getGlobalLocTupleSet());
+ nodeSet.addGlobalFlowTupleSet(rightOpSet.getGlobalLocTupleSet());
+
break;
default:
private NTuple<Descriptor> analyzeFlowNameNode(MethodDescriptor md, SymbolTable nametable,
NameNode nn, NodeTupleSet nodeSet, NTuple<Descriptor> base, NodeTupleSet implicitFlowTupleSet) {
- // System.out.println("analyzeFlowNameNode=" + nn.printNode(0));
-
if (base == null) {
base = new NTuple<Descriptor>();
}
private NTuple<Descriptor> analyzeFlowFieldAccessNode(MethodDescriptor md, SymbolTable nametable,
FieldAccessNode fan, NodeTupleSet nodeSet, NTuple<Descriptor> base,
NodeTupleSet implicitFlowTupleSet, boolean isLHS) {
+ // System.out.println("analyzeFlowFieldAccessNode=" + fan.printNode(0));
+ String currentArrayAccessNodeExpStr = null;
ExpressionNode left = fan.getExpression();
TypeDescriptor ltd = left.getType();
FieldDescriptor fd = fan.getField();
+ ArrayAccessNode aan = null;
String varName = null;
if (left.kind() == Kind.NameNode) {
NodeTupleSet idxNodeTupleSet = new NodeTupleSet();
+ boolean isArrayCase = false;
if (left instanceof ArrayAccessNode) {
- ArrayAccessNode aan = (ArrayAccessNode) left;
+ isArrayCase = true;
+ aan = (ArrayAccessNode) left;
+
+ currentArrayAccessNodeExpStr = aan.printNode(0);
+ arrayAccessNodeStack.push(currentArrayAccessNodeExpStr);
+
left = aan.getExpression();
analyzeFlowExpressionNode(md, nametable, aan.getIndex(), idxNodeTupleSet, base,
implicitFlowTupleSet, isLHS);
NTuple<Descriptor> flowFieldTuple = new NTuple<Descriptor>(base.toList());
if (!left.getType().isPrimitive()) {
-
if (!fd.getSymbol().equals("length")) {
// array.length access, just have the location of the array
flowFieldTuple.add(fd);
nodeSet.removeTuple(base);
}
-
}
getFlowGraph(md).createNewFlowNode(flowFieldTuple);
NTuple<Descriptor> idxTuple = idxIter.next();
getFlowGraph(md).addValueFlowEdge(idxTuple, flowFieldTuple);
}
+
+ GlobalFlowGraph globalFlowGraph = getSubGlobalFlowGraph(md);
+ for (Iterator<NTuple<Location>> iterator = idxNodeTupleSet.globalIterator(); iterator
+ .hasNext();) {
+ NTuple<Location> calleeReturnLocTuple = iterator.next();
+ globalFlowGraph.addValueFlowEdge(calleeReturnLocTuple,
+ translateToLocTuple(md, flowFieldTuple));
+ }
+
+ } else {
+
+ // if it is the array case and not the LHS case
+ if (isArrayCase) {
+ arrayAccessNodeStack.pop();
+
+ if (arrayAccessNodeStack.isEmpty()
+ || !arrayAccessNodeStack.peek().startsWith(currentArrayAccessNodeExpStr)) {
+ NodeTupleSet nodeSetArrayAccessExp = new NodeTupleSet();
+
+ nodeSetArrayAccessExp.addTuple(flowFieldTuple);
+ nodeSetArrayAccessExp.addTupleSet(idxNodeTupleSet);
+
+ if (needToGenerateInterLoc(nodeSetArrayAccessExp)) {
+ NTuple<Descriptor> interTuple =
+ getFlowGraph(md).createIntermediateNode().getDescTuple();
+
+ for (Iterator<NTuple<Descriptor>> iter = nodeSetArrayAccessExp.iterator(); iter
+ .hasNext();) {
+ NTuple<Descriptor> higherTuple = iter.next();
+ addFlowGraphEdge(md, higherTuple, interTuple);
+ }
+ flowFieldTuple = interTuple;
+ }
+
+ nodeSet.addGlobalFlowTupleSet(idxNodeTupleSet.getGlobalLocTupleSet());
+ }
+
+ }
+
}
return flowFieldTuple;
-
}
}
// creates edges from RHS to LHS
NTuple<Descriptor> interTuple = null;
- if (nodeSetRHS.size() > 1) {
+ if (needToGenerateInterLoc(nodeSetRHS)) {
interTuple = getFlowGraph(md).createIntermediateNode().getDescTuple();
}
}
}
+ // create global flow edges if the callee gives return value flows to the caller
+ if (nodeSetRHS.globalLocTupleSize() > 0) {
+ GlobalFlowGraph globalFlowGraph = getSubGlobalFlowGraph(md);
+ for (Iterator<NTuple<Location>> iterator = nodeSetRHS.globalIterator(); iterator.hasNext();) {
+ NTuple<Location> calleeReturnLocTuple = iterator.next();
+ for (Iterator<NTuple<Descriptor>> iter2 = nodeSetLHS.iterator(); iter2.hasNext();) {
+ NTuple<Descriptor> callerLHSTuple = iter2.next();
+ globalFlowGraph.addValueFlowEdge(calleeReturnLocTuple,
+ translateToLocTuple(md, callerLHSTuple));
+ System.out.println("$$$ GLOBAL FLOW ADD=" + calleeReturnLocTuple + " -> "
+ + translateToLocTuple(md, callerLHSTuple));
+ }
+ }
+ }
+
} else {
// postinc case
String fileName = "lattice_";
if (md != null) {
fileName +=
- cd.getSymbol().replaceAll("[\\W_]", "") + "_" + md.toString().replaceAll("[\\W_]", "");
+ /* cd.getSymbol().replaceAll("[\\W_]", "") + "_" + */md.toString().replaceAll("[\\W_]", "");
} else {
fileName += cd.getSymbol().replaceAll("[\\W_]", "");
}
bw.write(locName + " [label=\"" + prettyStr + "\"]" + ";\n");
}
- public void _debug_printGraph() {
+ public void _debug_writeFlowGraph() {
Set<MethodDescriptor> keySet = mapMethodDescriptorToFlowGraph.keySet();
for (Iterator<MethodDescriptor> iterator = keySet.iterator(); iterator.hasNext();) {
MethodDescriptor md = (MethodDescriptor) iterator.next();
FlowGraph fg = mapMethodDescriptorToFlowGraph.get(md);
+ GlobalFlowGraph subGlobalFlowGraph = getSubGlobalFlowGraph(md);
try {
fg.writeGraph();
+ subGlobalFlowGraph.writeGraph("_SUBGLOBAL");
} catch (IOException e) {
e.printStackTrace();
}
projects / IRC.git / blobdiff