private static void printDetails(CGNode method, ExplodedControlFlowGraph cfg, FlowGraph pruned) {
int deletedEdges = 0;
int originalEdges = 0;
for (IExplodedBasicBlock node : cfg) {
originalEdges += cfg.getSuccNodeCount(node);
Iterator<IExplodedBasicBlock> it = cfg.getSuccNodes(node);
int srcNum = node.getNumber();
while (it.hasNext()) {
IExplodedBasicBlock dst = it.next();
int dstNum = dst.getNumber();
if (pruned.hasEdge(srcNum, dstNum)) {
deletedEdges++;
}
}
}
DecimalFormat df = new DecimalFormat("00.00");
double percent = ((double) deletedEdges / (double) originalEdges) * 100.0;
Log.info(
"EXC: "
+ df.format(percent)
+ "% - edges: "
+ originalEdges
+ " deleted: "
+ deletedEdges
+ " - "
+ edu.kit.joana.deprecated.jsdg.util.Util.methodName(method.getMethod()));
}
private void createCFG() {
for (IExplodedBasicBlock block : ecfg) {
Set<CFGNode> last = lastNodesOfBB(block);
Iterator<IExplodedBasicBlock> it = getSuccs(block);
while (it.hasNext()) {
IExplodedBasicBlock succ = it.next();
if (succ == null) {
Log.warn("Basic block is null in " + Util.methodName(ecfg.getMethod()));
continue;
}
Set<CFGNode> firstOfSucc = firstNodesOfBB(succ);
for (CFGNode from : last) {
for (CFGNode to : firstOfSucc) {
cfg.addEdge(from, to);
}
}
}
}
cfg.addEdge(entry, exit);
}
private static Date initSDGcomputation(Config cfg) throws FileNotFoundException {
if (cfg == null || !cfg.requiredFieldsSet()) {
throw new IllegalArgumentException("Configuration is not valid: " + cfg);
}
File outputDir = new File(cfg.outputDir);
if (!outputDir.exists()) {
outputDir.mkdir();
}
Log.setLogFile(cfg.logFile);
if (cfg.logLevel != null) {
Log.setMinLogLevel(cfg.logLevel);
}
Date date = new Date();
Log.info("Starting Analysis at " + date);
boolean assertions = false;
assert (assertions = true);
Log.info("Assertions are turned " + (assertions ? "ON" : "OFF"));
Log.info("Java Datamodel: " + System.getProperty("sun.arch.data.model") + "bit");
Runtime run = Runtime.getRuntime();
Log.info("Avaliable Processors: " + run.availableProcessors());
Log.info("Free Memory: " + run.freeMemory());
Log.info("Total Memory: " + run.totalMemory());
Log.info("Maximum Memory: " + run.maxMemory());
Log.info(Debug.getSettings());
Log.info("SDGFactory.getSDG started with: \n" + cfg);
return date;
}
private static Result getOrigSDG(Config cfg, IProgressMonitor progress)
throws IllegalArgumentException, CancelException, PDGFormatException, IOException,
WalaException, InvalidClassFileException {
progress.beginTask(Messages.getString("Analyzer.Task_Prepare_IR"), -1); // $NON-NLS-1$
com.ibm.wala.ipa.callgraph.impl.Util.setNativeSpec(cfg.nativesXML);
progress.subTask(Messages.getString("Analyzer.SubTask_Analysis_Scope")); // $NON-NLS-1$
ClassLoader loader = cfg.getClass().getClassLoader();
AnalysisScope scope = Util.makeAnalysisScope(cfg, loader);
// AnalysisScopeReader.makeJavaBinaryAnalysisScope(cfg.scopeFile, cfg.classpath, null);
progress.done();
ClassHierarchy cha = ClassHierarchy.make(scope, progress);
Iterable<Entrypoint> entrypoints =
com.ibm.wala.ipa.callgraph.impl.Util.makeMainEntrypoints(scope, cha, cfg.mainClass);
AnalysisOptions options = new AnalysisOptions(scope, entrypoints);
AnalysisCache cache = new AnalysisCache();
progress.subTask(
Messages.getString("Analyzer.SubTask_Call_Graph_Builder") + cfg.pointsTo); // $NON-NLS-1$
SSAPropagationCallGraphBuilder builder =
SDGFactory.getCallGraphBuilder(cfg.pointsTo, options, cache, cha, scope);
/**
* Change the wala internal pointer and instancekeyfactory of the callgraph builder to our
* adapter. So we can keep track of the created InstanceKeys and PointerKeys. This information
* is used later on when creating subobject trees for accessed field variables.
*/
InstanceAndPointerKeyFactoryAdapter adapter = null;
InstanceKeyFactory ikFact = builder.getInstanceKeys();
PointerKeyFactory pkFact = builder.getPointerKeyFactory();
adapter = new InstanceAndPointerKeyFactoryAdapter(ikFact, pkFact);
builder.setInstanceKeys(adapter);
builder.setPointerKeyFactory(adapter);
progress.done();
progress.subTask(Messages.getString("Analyzer.SubTask_Call_Graph")); // $NON-NLS-1$
CallGraph cg = builder.makeCallGraph(options, progress);
if (cfg.optimizeCg >= 0) {
CallGraphPruning opt = new CallGraphPruning(cg);
System.out.println("Call Graph has " + cg.getNumberOfNodes() + " Nodes.");
Set<CGNode> sopt = opt.findApplicationNodes(cfg.optimizeCg);
cg = new PrunedCallGraph(cg, sopt);
System.out.println("Optimized Call Graph has " + cg.getNumberOfNodes() + " Nodes.");
}
if (Debug.Var.DUMP_CALLGRAPH.isSet()) {
Util.dumpCallGraph(cg, cfg.mainClass.replace('/', '.').substring(1), progress);
}
if (Debug.Var.DUMP_HEAP_GRAPH.isSet()) {
PointerAnalysis pta = builder.getPointerAnalysis();
HeapGraph hg = pta.getHeapGraph();
Util.dumpHeapGraph(
cfg.mainClass.replace('/', '.').substring(1) + "." + cfg.pointsTo, hg, null);
}
PointerAnalysis pta = builder.getPointerAnalysis();
progress.done();
DemandRefinementPointsTo demandPts = null;
if (cfg.useDemandPts) {
throw new UnsupportedOperationException();
// MemoryAccessMap mam = new PABasedMemoryAccessMap(cg, builder.getPointerAnalysis());
// demandPts = new DemandRefinementPointsTo(cg,
// new ThisFilteringHeapModel(builder,cha), mam, cha, options, getStateMachineFactory());
}
IPointerAnalysis pts = new PointsToWrapper(demandPts, pta);
progress.subTask(Messages.getString("Analyzer.SubTask_Search_Main")); // $NON-NLS-1$
IMethod main =
edu.kit.joana.deprecated.jsdg.util.Util.searchMethod(
entrypoints, "main([Ljava/lang/String;)V"); // $NON-NLS-1$
progress.done();
progress.done();
SDG sdg = SDG.create(main, cg, cache, adapter, pts, cfg, progress);
sdg.setAnalysisScope(scope);
sdg.setPointerAnalysis(pta);
progress.done();
if (Debug.Var.PRINT_FIELD_PTS_INFO.isSet()) {
Log.info("search for field allocs called " + PDG.searchFieldAllocs + " times.");
}
if (Debug.Var.PRINT_UNRESOLVED_CLASSES.isSet()) {
for (TypeReference tRef : cg.getClassHierarchy().getUnresolvedClasses()) {
Log.warn("Could not resolve: " + Util.typeName(tRef.getName()));
}
}
return new Result(null, sdg, cg, pta, null);
}
public static final Result getJoanaSDG(Config cfg, final IProgressMonitor progress)
throws IllegalArgumentException, CancelException, PDGFormatException, IOException,
WalaException, InvalidClassFileException {
final Date start = initSDGcomputation(cfg);
final Result jresult = getOrigSDG(cfg, progress);
edu.kit.joana.ifc.sdg.graph.SDG joanaSdg =
JoanaStyleSDG.createJoanaSDG(
jresult.jsdg, cfg.addControlFlow, cfg.nonTermination, cfg.useSummaryOpt, progress);
if (progress.isCanceled()) {
throw CancelException.make("Operation aborted.");
}
// as long as we can not cope with nodes that do not belong to the control flow we do this...
JoanaCFGSanitizer.sanitizeCFG(joanaSdg);
// assert assertVerify(joanaSdg, !cfg.useWalaSdg, cfg.addControlFlow);
final Date beforeThreadAllocation = new Date();
final MHPAnalysis mhp;
if (cfg.computeInterference) {
progress.beginTask("Creating cSDG from SDG " + cfg.outputSDGfile, -1);
progress.subTask("Running Thread Allocation Analysis");
Log.info("Running Thread Allocation Analysis");
mhp = CSDGPreprocessor.runMHP(joanaSdg, progress);
Log.info("Thread Allocation done.");
progress.done();
} else {
mhp = null;
}
if (progress.isCanceled()) {
throw CancelException.make("Operation aborted.");
}
final Date beforeSummaryEdge = new Date();
if (cfg.computeSummaryEdges) {
progress.subTask("Compute Summary Edges");
Log.info("Compute Summary Edges");
SummaryEdgeComputation.compute(joanaSdg, progress);
Log.info("Summary Edges done.");
progress.done();
}
if (progress.isCanceled()) {
throw CancelException.make("Operation aborted.");
}
final Date end = new Date();
long start2end = end.getTime() - start.getTime();
long summary2end = end.getTime() - beforeSummaryEdge.getTime();
long start2thread = beforeThreadAllocation.getTime() - start.getTime();
long threadAlloc = beforeSummaryEdge.getTime() - beforeThreadAllocation.getTime();
Log.info("Start 2 End: " + start2end / 1000 + "s (" + start2end + "ms)");
Log.info("Create: " + start2thread / 1000 + "s (" + start2thread + "ms)");
Log.info(
"Summary: "
+ summary2end / 1000
+ "s ("
+ summary2end
+ "ms)"
+ (cfg.computeSummaryEdges ? "" : " [deactivated]"));
Log.info(
"Thread: "
+ threadAlloc / 1000
+ "s ("
+ threadAlloc
+ "ms)"
+ (cfg.computeInterference ? "" : " [deactivated]"));
return new Result(joanaSdg, jresult.jsdg, jresult.cg, jresult.pts, mhp);
}
