- // Borrowed it from disjoint analysis
- private LinkedList<MethodDescriptor> topologicalSort(Set<MethodDescriptor> toSort) {
-
- Set<MethodDescriptor> discovered = new HashSet<MethodDescriptor>();
-
- LinkedList<MethodDescriptor> sorted = new LinkedList<MethodDescriptor>();
-
- Iterator<MethodDescriptor> itr = toSort.iterator();
- while (itr.hasNext()) {
- MethodDescriptor d = itr.next();
-
- if (!discovered.contains(d)) {
- dfsVisit(d, toSort, sorted, discovered);
- }
- }
-
- return sorted;
- }
-
- // While we're doing DFS on call graph, remember
- // dependencies for efficient queuing of methods
- // during interprocedural analysis:
- //
- // a dependent of a method decriptor d for this analysis is:
- // 1) a method or task that invokes d
- // 2) in the descriptorsToAnalyze set
- private void dfsVisit(MethodDescriptor md, Set<MethodDescriptor> toSort,
- LinkedList<MethodDescriptor> sorted, Set<MethodDescriptor> discovered) {
-
- discovered.add(md);
-
- Iterator itr = callGraph.getCallerSet(md).iterator();
- while (itr.hasNext()) {
- MethodDescriptor dCaller = (MethodDescriptor) itr.next();
- // only consider callers in the original set to analyze
- if (!toSort.contains(dCaller)) {
- continue;
- }
- if (!discovered.contains(dCaller)) {
- addDependent(md, // callee
- dCaller // caller
- );
-
- dfsVisit(dCaller, toSort, sorted, discovered);
- }
- }
-
- // for leaf-nodes last now!
- sorted.addLast(md);
- }
-
- // a dependent of a method decriptor d for this analysis is:
- // 1) a method or task that invokes d
- // 2) in the descriptorsToAnalyze set
- private void addDependent(MethodDescriptor callee, MethodDescriptor caller) {
- Set<MethodDescriptor> deps = mapDescriptorToSetDependents.get(callee);
- if (deps == null) {
- deps = new HashSet<MethodDescriptor>();
- }
- deps.add(caller);
- mapDescriptorToSetDependents.put(callee, deps);
- }
-
- private Set<MethodDescriptor> getDependents(MethodDescriptor callee) {
- Set<MethodDescriptor> deps = mapDescriptorToSetDependents.get(callee);
- if (deps == null) {
- deps = new HashSet<MethodDescriptor>();
- mapDescriptorToSetDependents.put(callee, deps);
- }
- return deps;
- }
-