import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
import java.util.HashSet;
import java.util.Hashtable;
import java.util.Iterator;
+import java.util.List;
import java.util.Set;
import java.util.StringTokenizer;
import java.util.Vector;
import Analysis.CallGraph.CallGraph;
+import Analysis.Loops.GlobalFieldType;
import Analysis.Loops.LoopOptimize;
import Analysis.Loops.LoopTerminate;
import IR.AnnotationDescriptor;
import IR.ClassDescriptor;
import IR.Descriptor;
+import IR.FieldDescriptor;
import IR.MethodDescriptor;
import IR.State;
+import IR.SymbolTable;
import IR.TypeUtil;
import IR.Flat.BuildFlat;
import IR.Flat.FlatMethod;
-import IR.Tree.TreeNode;
+import IR.Flat.FlatNode;
import Util.Pair;
public class SSJavaAnalysis {
public static final String DELTA = "DELTA";
public static final String TERMINATE = "TERMINATE";
public static final String DELEGATE = "DELEGATE";
+ public static final String DELEGATETHIS = "DELEGATETHIS";
+ public static final String TRUST = "TRUST";
State state;
TypeUtil tu;
// set containing a class that has at least one annoated method
Set<ClassDescriptor> annotationRequireClassSet;
+ // the set of method descriptor required to check the linear type property
+ Set<MethodDescriptor> linearTypeCheckMethodSet;
+
+ // the set of method descriptors annotated as "TRUST"
+ Set<MethodDescriptor> trustWorthyMDSet;
+
+ // points to method containing SSJAVA Loop
+ private MethodDescriptor methodContainingSSJavaLoop;
+
+ private FlatNode ssjavaLoopEntrance;
+
+ // keep the field ownership from the linear type checking
+ Hashtable<MethodDescriptor, Set<FieldDescriptor>> mapMethodToOwnedFieldSet;
+
+ Set<FlatNode> sameHeightWriteFlatNodeSet;
+
CallGraph callgraph;
LinearTypeCheck checker;
this.annotationRequireClassSet = new HashSet<ClassDescriptor>();
this.skipLoopTerminate = new Hashtable<MethodDescriptor, Integer>();
this.mapSharedLocation2DescriptorSet = new Hashtable<Location, Set<Descriptor>>();
+ this.linearTypeCheckMethodSet = new HashSet<MethodDescriptor>();
this.bf = bf;
+ this.trustWorthyMDSet = new HashSet<MethodDescriptor>();
+ this.mapMethodToOwnedFieldSet = new Hashtable<MethodDescriptor, Set<FieldDescriptor>>();
+ this.sameHeightWriteFlatNodeSet = new HashSet<FlatNode>();
}
public void doCheck() {
- doLinearTypeCheck();
- System.exit(0);
doMethodAnnotationCheck();
- if (state.SSJAVADEBUG) {
- debugPrint();
+ computeLinearTypeCheckMethodSet();
+ doLinearTypeCheck();
+ // if (state.SSJAVADEBUG) {
+ // debugPrint();
+ // }
+ if (state.SSJAVAINFER) {
+ inference();
+ } else {
+ parseLocationAnnotation();
+ doFlowDownCheck();
+ doDefinitelyWrittenCheck();
+ doLoopCheck();
+ }
+ }
+
+ private void inference() {
+ LocationInference inferEngine = new LocationInference(this, state);
+ inferEngine.inference();
+ }
+
+ private void doLoopCheck() {
+ GlobalFieldType gft = new GlobalFieldType(callgraph, state, tu.getMain());
+ LoopOptimize lo = new LoopOptimize(gft, tu);
+
+ SymbolTable classtable = state.getClassSymbolTable();
+
+ List<ClassDescriptor> toanalyzeList = new ArrayList<ClassDescriptor>();
+ List<MethodDescriptor> toanalyzeMethodList = new ArrayList<MethodDescriptor>();
+
+ toanalyzeList.addAll(classtable.getValueSet());
+ Collections.sort(toanalyzeList, new Comparator<ClassDescriptor>() {
+ public int compare(ClassDescriptor o1, ClassDescriptor o2) {
+ return o1.getClassName().compareTo(o2.getClassName());
+ }
+ });
+
+ for (int i = 0; i < toanalyzeList.size(); i++) {
+ ClassDescriptor cd = toanalyzeList.get(i);
+
+ SymbolTable methodtable = cd.getMethodTable();
+ toanalyzeMethodList.clear();
+ toanalyzeMethodList.addAll(methodtable.getValueSet());
+ Collections.sort(toanalyzeMethodList, new Comparator<MethodDescriptor>() {
+ public int compare(MethodDescriptor o1, MethodDescriptor o2) {
+ return o1.getSymbol().compareTo(o2.getSymbol());
+ }
+ });
+
+ for (int mdIdx = 0; mdIdx < toanalyzeMethodList.size(); mdIdx++) {
+ MethodDescriptor md = toanalyzeMethodList.get(mdIdx);
+ if (needTobeAnnotated(md)) {
+ lo.analyze(state.getMethodFlat(md));
+ doLoopTerminationCheck(lo, state.getMethodFlat(md));
+ }
+ }
+
}
- parseLocationAnnotation();
- doFlowDownCheck();
- doDefinitelyWrittenCheck();
+
+ }
+
+ public void addTrustMethod(MethodDescriptor md) {
+ trustWorthyMDSet.add(md);
+ }
+
+ public boolean isTrustMethod(MethodDescriptor md) {
+ return trustWorthyMDSet.contains(md);
+ }
+
+ private void computeLinearTypeCheckMethodSet() {
+
+ Set<MethodDescriptor> allCalledSet = callgraph.getMethodCalls(tu.getMain());
+ linearTypeCheckMethodSet.addAll(allCalledSet);
+
+ Set<MethodDescriptor> trustedSet = new HashSet<MethodDescriptor>();
+
+ for (Iterator iterator = trustWorthyMDSet.iterator(); iterator.hasNext();) {
+ MethodDescriptor trustMethod = (MethodDescriptor) iterator.next();
+ Set<MethodDescriptor> calledFromTrustMethodSet = callgraph.getMethodCalls(trustMethod);
+ trustedSet.add(trustMethod);
+ trustedSet.addAll(calledFromTrustMethodSet);
+ }
+
+ linearTypeCheckMethodSet.removeAll(trustedSet);
+
+ // if a method is called only by trusted method, no need to check linear
+ // type & flow down rule
+ for (Iterator iterator = trustedSet.iterator(); iterator.hasNext();) {
+ MethodDescriptor md = (MethodDescriptor) iterator.next();
+ Set<MethodDescriptor> callerSet = callgraph.getCallerSet(md);
+ if (!trustedSet.containsAll(callerSet) && !trustWorthyMDSet.contains(md)) {
+ linearTypeCheckMethodSet.add(md);
+ }
+ }
+
}
private void doLinearTypeCheck() {
if (value != null) {
maxIteration = Integer.parseInt(value);
}
- System.out.println("###md=" + md);
skipLoopTerminate.put(md, new Integer(maxIteration));
}
}
// sanity checks
if (locOrder.getThisLoc() != null && !locOrder.containsKey(locOrder.getThisLoc())) {
throw new Error("Variable 'this' location '" + locOrder.getThisLoc()
- + "' is not defined in the default local variable lattice at " + cd.getSourceFileName());
+ + "' is not defined in the local variable lattice at " + cd.getSourceFileName());
}
if (locOrder.getGlobalLoc() != null && !locOrder.containsKey(locOrder.getGlobalLoc())) {
throw new Error("Variable global location '" + locOrder.getGlobalLoc()
- + "' is not defined in the default local variable lattice at " + cd.getSourceFileName());
+ + "' is not defined in the local variable lattice at " + cd.getSourceFileName());
}
}
if (md2lattice.containsKey(md)) {
return md2lattice.get(md);
} else {
- return cd2methodDefault.get(md.getClassDesc());
+
+ if (cd2methodDefault.containsKey(md.getClassDesc())) {
+ return cd2methodDefault.get(md.getClassDesc());
+ } else {
+ throw new Error("Method Lattice of " + md + " is not defined.");
+ }
+
}
}
+ public boolean needToCheckLinearType(MethodDescriptor md) {
+ return linearTypeCheckMethodSet.contains(md);
+ }
+
public boolean needTobeAnnotated(MethodDescriptor md) {
return annotationRequireSet.contains(md);
}
ClassDescriptor cd = md.getClassDesc();
// if a method requires to be annotated, class containg that method also
// requires to be annotated
- annotationRequireClassSet.add(cd);
- annotationRequireSet.add(md);
+ if (!isSSJavaUtil(cd)) {
+ annotationRequireClassSet.add(cd);
+ annotationRequireSet.add(md);
+ }
}
public Set<MethodDescriptor> getAnnotationRequireSet() {
}
public void doLoopTerminationCheck(LoopOptimize lo, FlatMethod fm) {
- LoopTerminate lt = new LoopTerminate();
+ LoopTerminate lt = new LoopTerminate(this, state);
if (needTobeAnnotated(fm.getMethod())) {
lt.terminateAnalysis(fm, lo.getLoopInvariant(fm));
}
}
- public void doLoopTerminationCheck(LoopOptimize lo) {
- LoopTerminate lt = new LoopTerminate();
- for (Iterator iterator = annotationRequireSet.iterator(); iterator.hasNext();) {
- MethodDescriptor md = (MethodDescriptor) iterator.next();
- if (!skipLoopTerminate.containsKey(md)) {
- FlatMethod fm = state.getMethodFlat(md);
- lt.terminateAnalysis(fm, lo.getLoopInvariant(fm));
- }
- }
-
- }
-
public CallGraph getCallGraph() {
return callgraph;
}
return bf;
}
+ public MethodDescriptor getMethodContainingSSJavaLoop() {
+ return methodContainingSSJavaLoop;
+ }
+
+ public void setMethodContainingSSJavaLoop(MethodDescriptor methodContainingSSJavaLoop) {
+ this.methodContainingSSJavaLoop = methodContainingSSJavaLoop;
+ }
+
+ public boolean isSSJavaUtil(ClassDescriptor cd) {
+ if (cd.getSymbol().equals("SSJAVA")) {
+ return true;
+ }
+ return false;
+ }
+
+ public void setFieldOnwership(MethodDescriptor md, FieldDescriptor field) {
+
+ Set<FieldDescriptor> fieldSet = mapMethodToOwnedFieldSet.get(md);
+ if (fieldSet == null) {
+ fieldSet = new HashSet<FieldDescriptor>();
+ mapMethodToOwnedFieldSet.put(md, fieldSet);
+ }
+ fieldSet.add(field);
+ }
+
+ public boolean isOwnedByMethod(MethodDescriptor md, FieldDescriptor field) {
+ Set<FieldDescriptor> fieldSet = mapMethodToOwnedFieldSet.get(md);
+ if (fieldSet != null) {
+ return fieldSet.contains(field);
+ }
+ return false;
+ }
+
+ public FlatNode getSSJavaLoopEntrance() {
+ return ssjavaLoopEntrance;
+ }
+
+ public void setSSJavaLoopEntrance(FlatNode ssjavaLoopEntrance) {
+ this.ssjavaLoopEntrance = ssjavaLoopEntrance;
+ }
+
+ public void addSameHeightWriteFlatNode(FlatNode fn) {
+ this.sameHeightWriteFlatNodeSet.add(fn);
+ }
+
+ public boolean isSameHeightWrite(FlatNode fn) {
+ return this.sameHeightWriteFlatNodeSet.contains(fn);
+ }
+
}
projects / IRC.git / blobdiff