private Hashtable< FlatNode, CodePlan > codePlans;
private Hashtable< FlatEdge, FlatWriteDynamicVarNode > wdvNodesToSpliceIn;
+
+ private Hashtable< MethodContext, HashSet<AllocationSite>> mapMethodContextToLiveInAllocationSiteSet;
public static int maxSESEage = -1;
codePlans = new Hashtable< FlatNode, CodePlan >();
wdvNodesToSpliceIn = new Hashtable< FlatEdge, FlatWriteDynamicVarNode >();
+ mapMethodContextToLiveInAllocationSiteSet = new Hashtable< MethodContext, HashSet<AllocationSite>>();
+
FlatMethod fmMain = state.getMethodFlat( typeUtil.getMain() );
// new pass
methItr = ownAnalysis.descriptorsToAnalyze.iterator();
+ JavaCallGraph javaCallGraph = new JavaCallGraph(state,tu);
while( methItr.hasNext() ) {
Descriptor d = methItr.next();
FlatMethod fm = state.getMethodFlat( d );
- methodEffects(fm);
+ methodEffects(fm,javaCallGraph);
}
+
+ // disjoint analysis with a set of flagged allocation sites of live-in variable
+ try {
+ OwnershipAnalysis oa2 = new OwnershipAnalysis(state, tu, callGraph,
+ state.OWNERSHIPALLOCDEPTH, false,
+ false, state.OWNERSHIPALIASFILE,
+ state.METHODEFFECTS,
+ mapMethodContextToLiveInAllocationSiteSet);
+ // debug
+ methItr = oa2.descriptorsToAnalyze.iterator();
+ while (methItr.hasNext()) {
+ Descriptor d = methItr.next();
+ FlatMethod fm = state.getMethodFlat(d);
+ debugFunction(oa2, fm);
+ }
+ //
+ } catch (IOException e) {
+ System.err.println(e);
+ }
+
// 7th pass
} // end switch
}
- private void methodEffects(FlatMethod fm) {
+ private void debugFunction(OwnershipAnalysis oa2, FlatMethod fm) {
+
+ String methodName="doSomeWork";
+
+ MethodDescriptor md=fm.getMethod();
+ HashSet<MethodContext> mcSet=oa2.getAllMethodContextSetByDescriptor(md);
+ Iterator<MethodContext> mcIter=mcSet.iterator();
+
+ while(mcIter.hasNext()){
+ MethodContext mc=mcIter.next();
+
+ OwnershipGraph og=oa2.getOwnvershipGraphByMethodContext(mc);
+
+ if(fm.toString().indexOf(methodName)>0){
+ try {
+ og.writeGraph(methodName + "SECONDGRAPH", true, true, true, true, false);
+ } catch (IOException e) {
+ System.out.println("Error writing debug capture.");
+ System.exit(0);
+ }
+ }
+
+
+
+ }
+
+ }
+
+ private void methodEffects(FlatMethod fm, CallGraph callGraph) {
MethodDescriptor md=fm.getMethod();
HashSet<MethodContext> mcSet=ownAnalysis.getAllMethodContextSetByDescriptor(md);
assert seseStack != null;
if (!seseStack.empty()) {
- effects_nodeActions(mc, fn, seseStack.peek());
+ effects_nodeActions(mc, fn, seseStack.peek(), callGraph);
}
flatNodesToVisit.remove(fn);
}
}
+
+ private void analyzeRelatedAllocationSite(MethodDescriptor callerMD,
+ MethodContext calleeMC, HashSet<Integer> paramIndexSet) {
+
+ HashSet<MethodContext> mcSet = ownAnalysis
+ .getAllMethodContextSetByDescriptor(callerMD);
+ Iterator<MethodContext> mcIter = mcSet.iterator();
+
+ FlatMethod callerFM = state.getMethodFlat(callerMD);
+
+ while (mcIter.hasNext()) {
+ MethodContext mc = mcIter.next();
+
+ Set<FlatNode> visited = new HashSet<FlatNode>();
+ Set<FlatNode> flatNodesToVisit = new HashSet<FlatNode>();
+ flatNodesToVisit.add(callerFM);
+
+ while (!flatNodesToVisit.isEmpty()) {
+ FlatNode fn = (FlatNode) flatNodesToVisit.iterator().next();
+ flatNodesToVisit.remove(fn);
+
+ analyzeRelatedAllocationSite_NodeAction(fn, mc, calleeMC, paramIndexSet);
+
+ flatNodesToVisit.remove(fn);
+ visited.add(fn);
+
+ for (int i = 0; i < fn.numNext(); i++) {
+ FlatNode nn = fn.getNext(i);
+ if (!visited.contains(nn)) {
+ flatNodesToVisit.add(nn);
+ }
+ }
+ }
+
+ }
+
+ }
+
+ private void analyzeRelatedAllocationSite_NodeAction(FlatNode fn, MethodContext callerMC,
+ MethodContext calleeMC, HashSet<Integer> paramIndexSet) {
+
+ OwnershipGraph og = ownAnalysis
+ .getOwnvershipGraphByMethodContext(callerMC);
+
+ switch (fn.kind()) {
+
+ case FKind.FlatCall: {
+
+ FlatCall fc = (FlatCall) fn;
+
+ MethodContext calleeMCfromOG = ownAnalysis.getCalleeMethodContext(
+ callerMC, fc);
+
+ if (calleeMC.equals(calleeMCfromOG)) {
+ // in this case, this method context calls corresponding callee.
+ int base;
+ if (((MethodDescriptor) calleeMC.getDescriptor()).isStatic()) {
+ base = 0;
+ } else {
+ base = 1;
+ }
+
+ for (Iterator iterator = paramIndexSet.iterator(); iterator
+ .hasNext();) {
+ Integer integer = (Integer) iterator.next();
+
+ int paramIdx=integer-base;
+ if(paramIdx>=0){
+ // if paramIdx is less than 0, assumes that it is related with wrong method contexts.
+ TempDescriptor arg = fc.getArg(paramIdx );
+ LabelNode argLN = og.td2ln.get(arg);
+ if (argLN != null) {
+ Iterator<ReferenceEdge> iterEdge = argLN
+ .iteratorToReferencees();
+ while (iterEdge.hasNext()) {
+ ReferenceEdge referenceEdge = (ReferenceEdge) iterEdge
+ .next();
+
+ HeapRegionNode dstHRN=referenceEdge.getDst();
+ if(dstHRN.isParameter()){
+ setupRelatedAllocSiteAnalysis(og,callerMC,dstHRN);
+ }else{
+ addLiveInAllocationSite(callerMC, dstHRN
+ .getAllocationSite());
+ }
+ }
+ }
+ }
+ }
+ }
+
+ }
+ break;
+
+ }
+ }
+
+ private void setupRelatedAllocSiteAnalysis(OwnershipGraph og,
+ MethodContext mc, HeapRegionNode dstHRN) {
+
+ HashSet<Integer> paramIndexSet = new HashSet<Integer>();
+
+ // collect corresponding param index
+ Set<Integer> pIndexSet = og.idPrimary2paramIndexSet.get(dstHRN.getID());
+ if (pIndexSet != null) {
+ for (Iterator iterator = pIndexSet.iterator(); iterator.hasNext();) {
+ Integer integer = (Integer) iterator.next();
+ paramIndexSet.add(integer);
+ }
+ }
+
+ Set<Integer> sIndexSet = og.idSecondary2paramIndexSet.get(dstHRN
+ .getID());
+ if (sIndexSet != null) {
+ for (Iterator iterator = sIndexSet.iterator(); iterator.hasNext();) {
+ Integer integer = (Integer) iterator.next();
+ paramIndexSet.add(integer);
+ }
+ }
+
+ if (mc.getDescriptor() instanceof MethodDescriptor) {
+ Set callerSet = callGraph.getCallerSet((MethodDescriptor) mc
+ .getDescriptor());
+ for (Iterator iterator = callerSet.iterator(); iterator.hasNext();) {
+ Object obj = (Object) iterator.next();
+ if (obj instanceof MethodDescriptor) {
+ MethodDescriptor callerMD = (MethodDescriptor) obj;
+
+ analyzeRelatedAllocationSite(callerMD, mc, paramIndexSet);
+
+ }
+ }
+ }
+ }
private void effects_nodeActions(MethodContext mc, FlatNode fn,
- FlatSESEEnterNode currentSESE) {
+ FlatSESEEnterNode currentSESE, CallGraph callGraph) {
OwnershipGraph og = ownAnalysis.getOwnvershipGraphByMethodContext(mc);
if (ln != null) {
int taint = (int) Math.pow(2, idx);
taintLabelNode(ln, taint);
+
+ // collects related allocation sites
+ Iterator<ReferenceEdge> referenceeIter = ln
+ .iteratorToReferencees();
+ while (referenceeIter.hasNext()) {
+ ReferenceEdge referenceEdge = (ReferenceEdge) referenceeIter
+ .next();
+ HeapRegionNode dstHRN = referenceEdge.getDst();
+ if (dstHRN.isParameter()) {
+
+ setupRelatedAllocSiteAnalysis(og,mc,dstHRN);
+
+ } else {
+ addLiveInAllocationSite(mc, dstHRN
+ .getAllocationSite());
+ }
+ }
+
}
+
idx++;
}
if (parentEffectsSet == null) {
parentEffectsSet = new HashSet<SESEEffectsKey>();
}
-
+
for (Iterator iterator = effectsSet.iterator(); iterator
.hasNext();) {
SESEEffectsKey seseKey = (SESEEffectsKey) iterator
.next();
- parentEffectsSet.add(new SESEEffectsKey(seseKey.getFieldDescriptor(), seseKey.getTypeDescriptor(), seseKey.getHRNId()));
+ parentEffectsSet.add(new SESEEffectsKey(seseKey
+ .getFieldDescriptor(), seseKey
+ .getTypeDescriptor(), seseKey.getHRNId()));
}
-
+
parentReadTable.put(td, parentEffectsSet);
}
if (parentEffectsSet == null) {
parentEffectsSet = new HashSet<SESEEffectsKey>();
}
-
+
for (Iterator iterator = effectsSet.iterator(); iterator
.hasNext();) {
SESEEffectsKey seseKey = (SESEEffectsKey) iterator
.getFieldDescriptor(), seseKey
.getTypeDescriptor(), seseKey.getHRNId()));
}
-
+
parentWriteTable.put(td, parentEffectsSet);
}
-
+
Hashtable<TempDescriptor, HashSet<SESEEffectsKey>> strongUpdateTable = set
.getStrongUpdateTable();
Hashtable<TempDescriptor, HashSet<SESEEffectsKey>> parentstrongUpdateTable = parent
keyIter = keys.iterator();
while (keyIter.hasNext()) {
TempDescriptor td = (TempDescriptor) keyIter.next();
- HashSet<SESEEffectsKey> effectsSet = strongUpdateTable.get(td);
+ HashSet<SESEEffectsKey> effectsSet = strongUpdateTable
+ .get(td);
HashSet<SESEEffectsKey> parentEffectsSet = parentstrongUpdateTable
.get(td);
if (parentEffectsSet == null) {
.iterator();
while (affectedIter.hasNext()) {
TempDescriptor affectedTD = affectedIter.next();
+
if (currentSESE.getInVarSet().contains(affectedTD)) {
HashSet<HeapRegionNode> hrnSet = getReferenceHeapIDSet(
}
}
}
-
- // handle tainted case
-
+
+ // handle tainted case
+
Iterator<ReferenceEdge> edgeIter = srcLN
.iteratorToReferencees();
while (edgeIter.hasNext()) {
ReferenceEdge edge = edgeIter.next();
-
- if(edge.getTaintIdentifier()>0){
- HeapRegionNode accessHRN = edge.getDst();
- /// follow the chain of reference to identify possible accesses
- Iterator<ReferenceEdge> referIter=accessHRN.iteratorToReferencers();
- while (referIter.hasNext()) {
- ReferenceEdge referEdge = (ReferenceEdge) referIter.next();
-
- if (referEdge.getTaintIdentifier() > 0) {
- HashSet<TempDescriptor> referSet = new HashSet<TempDescriptor>();
- followReference(accessHRN, referSet, new HashSet<HeapRegionNode>(),
- currentSESE);
-
- Iterator<TempDescriptor> referSetIter=referSet.iterator();
- while (referSetIter.hasNext()) {
- TempDescriptor tempDescriptor = (TempDescriptor) referSetIter
- .next();
- currentSESE.readEffects(tempDescriptor, field
- .getSymbol(), src.getType(), accessHRN
- .getID());
- }
- }
+ HeapRegionNode accessHRN = edge.getDst();
+ // / follow the chain of reference to identify possible
+ // accesses
+ Iterator<ReferenceEdge> referIter = accessHRN
+ .iteratorToReferencers();
+ while (referIter.hasNext()) {
+ ReferenceEdge referEdge = (ReferenceEdge) referIter
+ .next();
+
+ // if (referEdge.getTaintIdentifier() >0 ||
+ // referEdge.getSESETaintIdentifier()>0 ) {
+ HashSet<TempDescriptor> referSet = new HashSet<TempDescriptor>();
+ followReference(accessHRN, referSet,
+ new HashSet<HeapRegionNode>(), currentSESE);
+
+ Iterator<TempDescriptor> referSetIter = referSet
+ .iterator();
+ while (referSetIter.hasNext()) {
+ TempDescriptor tempDescriptor = (TempDescriptor) referSetIter
+ .next();
+ currentSESE.readEffects(tempDescriptor, field
+ .getSymbol(), src.getType(), accessHRN
+ .getID());
}
- ///
+ // }
+ }
+ // /
+ if (edge.getTaintIdentifier() > 0
+ || edge.getSESETaintIdentifier() > 0) {
+
affectedTDSet = getReferenceNodeSet(accessHRN);
affectedIter = affectedTDSet.iterator();
while (affectedIter.hasNext()) {
TempDescriptor affectedTD = affectedIter.next();
+
if (currentSESE.getInVarSet().contains(affectedTD)) {
HashSet<HeapRegionNode> hrnSet = getReferenceHeapIDSet(
LabelNode dstLN = og.td2ln.get(dst);
if (dstLN != null) {
// check possible strong updates
- boolean strongUpdate = false;
-
- if( !field.getType().isImmutable() || field.getType().isArray() ) {
- Iterator<ReferenceEdge> itrXhrn = dstLN.iteratorToReferencees();
- while( itrXhrn.hasNext() ) {
- ReferenceEdge edgeX = itrXhrn.next();
- HeapRegionNode hrnX = edgeX.getDst();
-
- // we can do a strong update here if one of two cases holds
- if( field != null &&
- field != OwnershipAnalysis.getArrayField( field.getType() ) &&
- ( (hrnX.getNumReferencers() == 1) || // case 1
- (hrnX.isSingleObject() && dstLN.getNumReferencees() == 1) // case 2
- )
- ) {
- strongUpdate = true;
- }
- }
- }
-
+ boolean strongUpdate = false;
+
+ if (!field.getType().isImmutable() || field.getType().isArray()) {
+ Iterator<ReferenceEdge> itrXhrn = dstLN
+ .iteratorToReferencees();
+ while (itrXhrn.hasNext()) {
+ ReferenceEdge edgeX = itrXhrn.next();
+ HeapRegionNode hrnX = edgeX.getDst();
+
+ // we can do a strong update here if one of two cases
+ // holds
+ if (field != null
+ && field != OwnershipAnalysis
+ .getArrayField(field.getType())
+ && ((hrnX.getNumReferencers() == 1) || // case 1
+ (hrnX.isSingleObject() && dstLN
+ .getNumReferencees() == 1) // case 2
+ )) {
+ strongUpdate = true;
+ }
+ }
+ }
+
HashSet<TempDescriptor> affectedTDSet = getAccessedTaintNodeSet(dstLN);
Iterator<TempDescriptor> affectedIter = affectedTDSet
while (hrnIter.hasNext()) {
HeapRegionNode hrn = hrnIter.next();
- if (field.getType().isImmutable()) {
- currentSESE.writeEffects(affectedTD, field
- .getSymbol(), dst.getType(), hrn
- .getID(),strongUpdate);
-
- } else {
- Iterator<ReferenceEdge> referencers = hrn
- .iteratorToReferencers();
- while (referencers.hasNext()) {
- ReferenceEdge referenceEdge = (ReferenceEdge) referencers
- .next();
- if (field.getSymbol().equals(
- referenceEdge.getField())) {
- currentSESE.writeEffects(affectedTD,
- field.getSymbol(), dst
- .getType(),
- referenceEdge.getDst().getID(),strongUpdate);
- }
+ Iterator<ReferenceEdge> referencers = hrn
+ .iteratorToReferencers();
+ while (referencers.hasNext()) {
+ ReferenceEdge referenceEdge = (ReferenceEdge) referencers
+ .next();
+ if (field.getSymbol().equals(
+ referenceEdge.getField())) {
+ currentSESE.writeEffects(affectedTD, field
+ .getSymbol(), dst.getType(),
+ referenceEdge.getDst().getID(),
+ strongUpdate);
}
}
}
}
}
-
+
// handle tainted case
Iterator<ReferenceEdge> edgeIter = dstLN
.iteratorToReferencees();
while (edgeIter.hasNext()) {
ReferenceEdge edge = edgeIter.next();
- if (edge.getTaintIdentifier() > 0) {
- HeapRegionNode accessHRN = edge.getDst();
- /// follow the chain of reference to identify possible accesses
- Iterator<ReferenceEdge> referIter=accessHRN.iteratorToReferencers();
- while (referIter.hasNext()) {
- ReferenceEdge referEdge = (ReferenceEdge) referIter.next();
-
- if (referEdge.getTaintIdentifier() > 0) {
- HashSet<TempDescriptor> referSet = new HashSet<TempDescriptor>();
- followReference(accessHRN, referSet, new HashSet<HeapRegionNode>(),
- currentSESE);
- Iterator<TempDescriptor> referSetIter=referSet.iterator();
- while (referSetIter.hasNext()) {
- TempDescriptor tempDescriptor = (TempDescriptor) referSetIter
- .next();
- currentSESE.writeEffects(tempDescriptor, field
- .getSymbol(), dst.getType(), accessHRN
- .getID(),strongUpdate);
- }
- }
-
+ HeapRegionNode accessHRN = edge.getDst();
+ // / follow the chain of reference to identify possible
+ // accesses
+ Iterator<ReferenceEdge> referIter = accessHRN
+ .iteratorToReferencers();
+ while (referIter.hasNext()) {
+ ReferenceEdge referEdge = (ReferenceEdge) referIter
+ .next();
+
+ // if (referEdge.getTaintIdentifier() > 0 ||
+ // referEdge.getSESETaintIdentifier() > 0 ) {
+ HashSet<TempDescriptor> referSet = new HashSet<TempDescriptor>();
+ followReference(accessHRN, referSet,
+ new HashSet<HeapRegionNode>(), currentSESE);
+ Iterator<TempDescriptor> referSetIter = referSet
+ .iterator();
+ while (referSetIter.hasNext()) {
+ TempDescriptor tempDescriptor = (TempDescriptor) referSetIter
+ .next();
+ currentSESE.writeEffects(tempDescriptor, field
+ .getSymbol(), dst.getType(), accessHRN
+ .getID(), strongUpdate);
}
- ///
+ // }
+ }
+ // /
+ if (edge.getTaintIdentifier() > 0
+ || edge.getSESETaintIdentifier() > 0) {
affectedTDSet = getReferenceNodeSet(accessHRN);
affectedIter = affectedTDSet.iterator();
while (affectedIter.hasNext()) {
HeapRegionNode hrn = hrnIter.next();
currentSESE.writeEffects(affectedTD, field
.getSymbol(), dst.getType(), hrn
- .getID(),strongUpdate);
-
+ .getID(), strongUpdate);
+
}
}
i + base);
Set<EffectsKey> writeSet = me.getEffects().getWritingSet(
i + base);
-
- Set<EffectsKey> strongUpdateSet = me.getEffects().getStrongUpdateSet(
- i + base);
+
+ Set<EffectsKey> strongUpdateSet = me.getEffects()
+ .getStrongUpdateSet(i + base);
LabelNode argLN = og.td2ln.get(arg);
if (argLN != null) {
currentSESE.writeEffects(affectedTD,
key.getFieldDescriptor(), key
.getTypeDescriptor(),
- hrnID,false);
+ hrnID, false);
}
}
}
-
+
if (strongUpdateSet != null) {
Iterator<EffectsKey> strongUpdateIter = strongUpdateSet
.iterator();
currentSESE.writeEffects(affectedTD,
key.getFieldDescriptor(), key
.getTypeDescriptor(),
- hrnID,true);
+ hrnID, true);
}
}
}
-
}
}
}
+ private void addLiveInAllocationSite(MethodContext mc, AllocationSite ac){
+ HashSet<AllocationSite> set=mapMethodContextToLiveInAllocationSiteSet.get(mc);
+ if(set==null){
+ set=new HashSet<AllocationSite>();
+ }
+ set.add(ac);
+ mapMethodContextToLiveInAllocationSiteSet.put(mc, set);
+ }
+
private void followReference(HeapRegionNode hrn,HashSet<TempDescriptor> tdSet, HashSet<HeapRegionNode> visited, FlatSESEEnterNode currentSESE){
Iterator<ReferenceEdge> referIter=hrn.iteratorToReferencers();
OwnershipNode node = referencerEdge.getSrc();
if (node instanceof LabelNode) {
referencerEdge.unionSESETaintIdentifier(identifier);
+ }else if(node instanceof HeapRegionNode){
+ referencerEdge.unionSESETaintIdentifier(identifier);
}
}
projects / IRC.git / blobdiff