+++ /dev/null
-package Analysis.TaskStateAnalysis;
-import Analysis.TaskStateAnalysis.*;
-import IR.*;
-import IR.Tree.*;
-import IR.Flat.*;
-import java.util.*;
-import java.io.File;
-import java.io.FileOutputStream;
-
-public class TaskAnalysis {
- State state;
- Hashtable flagstates;
- Hashtable flags;
- Hashtable extern_flags;
- Queue<FlagState> q_main;
- Hashtable map;
- TempDescriptor temp;
- TypeUtil typeutil;
-
- /**
- * Class Constructor
- *
- * @param state a flattened State object
- * @see State
- * @param map Hashtable containing the temp to var mapping
- */
- public TaskAnalysis(State state,Hashtable map)
- {
- this.state=state;
- this.map=map;
- this.typeutil=new TypeUtil(state);
- }
-
- /** This function builds a table of flags for each class **/
-
- private void getFlagsfromClasses() {
- flags=new Hashtable();
- extern_flags = new Hashtable();
-
- for(Iterator it_classes=state.getClassSymbolTable().getDescriptorsIterator();it_classes.hasNext();) {
-
- ClassDescriptor cd = (ClassDescriptor)it_classes.next();
- System.out.println(cd.getSymbol());
- Vector vFlags=new Vector();
- FlagDescriptor flag[];
- int ctr=0;
-
-
- /* Adding the flags of the super class */
- if (cd.getSuper()!=null) {
- ClassDescriptor superdesc=cd.getSuperDesc();
-
- for(Iterator it_cflags=superdesc.getFlags();it_cflags.hasNext();) {
- FlagDescriptor fd = (FlagDescriptor)it_cflags.next();
- System.out.println(fd.toString());
- vFlags.add(fd);
- }
- }
-
- for(Iterator it_cflags=cd.getFlags();it_cflags.hasNext();) {
- FlagDescriptor fd = (FlagDescriptor)it_cflags.next();
- System.out.println(fd.toString());
- vFlags.add(fd);
- }
-
- if (vFlags.size()!=0) {
- flag=new FlagDescriptor[vFlags.size()];
-
- for(int i=0;i < vFlags.size() ; i++) {
- if (((FlagDescriptor)vFlags.get(i)).getExternal()) {
- flag[ctr]=(FlagDescriptor)vFlags.get(i);
- vFlags.remove(flag[ctr]);
- ctr++;
- }
- }
- for(int i=0;i < vFlags.size() ; i++) {
- flag[i+ctr]=(FlagDescriptor)vFlags.get(i);
- }
- extern_flags.put(cd,new Integer(ctr));
- flags.put(cd,flag);
-
- }
- }
- }
-
- public void taskAnalysis() throws java.io.IOException {
- flagstates=new Hashtable();
- Hashtable<FlagState,FlagState> sourcenodes;
-
- getFlagsfromClasses();
-
- int externs;
- q_main=new LinkedList<FlagState>();
-
- for(Iterator it_classes=(Iterator)flags.keys();it_classes.hasNext();) {
- ClassDescriptor cd=(ClassDescriptor)it_classes.next();
- externs=((Integer)extern_flags.get(cd)).intValue();
- FlagDescriptor[] fd=(FlagDescriptor[])flags.get(cd);
-
- //Debug block
- System.out.println("Inside taskAnalysis;\n Class:"+ cd.getSymbol());
- System.out.println("No of externs " + externs);
- System.out.println("No of flags: "+fd.length);
- //Debug block
-
- flagstates.put(cd,new Hashtable<FlagState,FlagState>());
- }
-
-
- ClassDescriptor startupobject=typeutil.getClass(TypeUtil.StartupClass);
-
- sourcenodes=(Hashtable<FlagState,FlagState>)flagstates.get(startupobject);
-
- FlagState fsstartup=new FlagState(startupobject);
- FlagDescriptor[] fd=(FlagDescriptor[])flags.get(startupobject);
-
- fsstartup=fsstartup.setFlag(fd[0],true);
-
- sourcenodes.put(fsstartup,fsstartup);
-
- Queue<FlagState> q_temp=analyseTasks(fsstartup);
-
- if ( q_temp != null) {
- q_main.addAll(q_temp);
- }
-
- while (q_main.size() > 0) {
- // ****debug block********
-
- System.out.println("/***********contents of main q before pop**********/");
- for (Iterator it_qm=q_main.iterator();it_qm.hasNext();)
- {
-
- FlagState fs_qm=(FlagState)it_qm.next();
-
- System.out.println("FS : "+fs_qm.getClassDescriptor().toString()+" : "+fs_qm.toString((FlagDescriptor [])flags.get(fs_qm.getClassDescriptor())));
- }
- System.out.println("/*********************************/");
- // ****debug block********
- FlagState trigger=q_main.poll();
-
-
- q_temp=createPossibleRuntimeStates(trigger);
-
- if ( q_temp != null){
- q_main.addAll(q_temp);
-
- // ****debug block********
-
- System.out.println("/***********contents of main q**********/");
- for (Iterator it_qm=q_main.iterator();it_qm.hasNext();)
- {
-
- FlagState fs_qm=(FlagState)it_qm.next();
-
- System.out.println("FS : "+fs_qm.getClassDescriptor().toString()+" : "+fs_qm.toString((FlagDescriptor [])flags.get(fs_qm.getClassDescriptor())));
- }
- System.out.println("/*********************************/");
- // ****debug block********
-
- q_temp=analyseTasks(trigger);
-
- if ( q_temp != null)
- q_main.addAll(q_temp);
-
- // ****debug block********
-
- System.out.println("/***********contents of main q after analyse tasks**********/");
- for (Iterator it_qm=q_main.iterator();it_qm.hasNext();)
- {
-
- FlagState fs_qm=(FlagState)it_qm.next();
-
- System.out.println("FS : "+fs_qm.getClassDescriptor().toString()+" : "+fs_qm.toString((FlagDescriptor [])flags.get(fs_qm.getClassDescriptor())));
- }
- System.out.println("/*********************************/");
- // ****debug block********
-
- }
- }
-
- //Creating DOT files
- Enumeration e=flagstates.keys();
-
- while (e.hasMoreElements()) {
- System.out.println("creating dot file");
- ClassDescriptor cdtemp=(ClassDescriptor)e.nextElement();
- System.out.println((cdtemp.getSymbol()));
- createDOTfile(cdtemp);
- }
-
-
- }
-
-
- public Queue<FlagState> analyseTasks(FlagState fs) throws java.io.IOException {
-
-
- Hashtable<FlagState,FlagState> sourcenodes;
- Queue<FlagState> q_retval;
-
-
-
- ClassDescriptor cd=fs.getClassDescriptor();
-
- sourcenodes=(Hashtable<FlagState,FlagState>)flagstates.get(cd);
-
- int externs=((Integer)extern_flags.get(cd)).intValue();
- FlagDescriptor[] fd=(FlagDescriptor[])flags.get(cd);
-
- q_retval=new LinkedList<FlagState>();
- //***Debug Block***
-
- //while (q.size() != 0) {
- System.out.println("inside while loop in analysetasks \n");
-
- //***Debug Block***
- //FlagDescriptor[] ftemp=(FlagDescriptor[])flags.get(cd);
- //System.out.println("Processing state: "+cd.getSymbol()+" " + fsworking.toString(ftemp));
- //***Debug Block***
-
-
- for(Iterator it_tasks=state.getTaskSymbolTable().getDescriptorsIterator();it_tasks.hasNext();) {
- TaskDescriptor td = (TaskDescriptor)it_tasks.next();
- boolean taskistriggered=false;
- int trigger_ctr=0;
- String taskname=getTaskName(td);
-
-
-
- //***Debug Block***
-
- System.out.println("Method: AnalyseTasks");
- System.out.println(taskname);
- System.out.println();
-
- //***Debug Block***
-
-
-
- for(int i=0; i < td.numParameters(); i++) {
- FlagExpressionNode fen=td.getFlag(td.getParameter(i));
- //if ( (td.getParamType(i).equals(cd))&&(isTaskTrigger(fen,fs))){
- if ((isParamOfSameClass(td.getParamType(i),cd)) && (isTaskTrigger(fen,fs))){
- taskistriggered = true;
- System.out.println(td.getParamType(i).toString()+" "+cd.toString());
- temp=(TempDescriptor)map.get(td.getParameter(i));
- trigger_ctr++;
- }
- }
-
- if (trigger_ctr>1)
- throw new Error("Illegal Operation: A single flagstate cannot satisfy more than one parameter of a task.");
-
- if (taskistriggered) {
- //***Debug Block***
- //
- System.out.println("inside taskistriggered");
-
- //***Debug Block***
-
- taskistriggered=false;
- if (!wasFlagStateProcessed(sourcenodes,fs)){
- sourcenodes.put(fs,fs);
- }
- else{
- fs=sourcenodes.get(fs);
- }
-
- //Iterating through the nodes
- FlatMethod fm = state.getMethodFlat(td);
- FlatNode fn=fm.methodEntryNode();
-
- HashSet tovisit= new HashSet();
- HashSet visited= new HashSet();
-
- tovisit.add(fn);
- while(!tovisit.isEmpty()) {
- FlatNode fn1 = (FlatNode)tovisit.iterator().next();
- tovisit.remove(fn1);
- visited.add(fn1);
- for(int i = 0; i < fn1.numNext(); i++) {
- FlatNode nn=fn1.getNext(i);
- if (nn.kind()==FKind.FlatFlagActionNode) {
- //***Debug Block***
- if (((FlatFlagActionNode)nn).getTaskType() == FlatFlagActionNode.PRE) {
- throw new Error("PRE FlagActions not supported");
-
- } else if (((FlatFlagActionNode)nn).getTaskType() == FlatFlagActionNode.NEWOBJECT) {
- //***Debug Block***
- System.out.println("NEWObject");
- //***Debug Block***
-
- q_retval.offer(evalNewObjNode(nn));
- }
- if (((FlatFlagActionNode)nn).getTaskType() == FlatFlagActionNode.TASKEXIT) {
- //***Debug Block***
- System.out.println("TaskExit");
- //***Debug Block***
- FlagState fs_taskexit=evalTaskExitNode(nn,cd,fs);
-
- Edge newedge=new Edge(fs_taskexit,taskname);
- if (!edgeexists(fs,newedge)) {
- fs.addEdge(newedge);
- }
- if ((!wasFlagStateProcessed(sourcenodes,fs_taskexit)) && (!existsInQMain(fs_taskexit)) && (!existsInQ(q_retval,fs_taskexit))){
- q_retval.offer(fs_taskexit);
- }
- }
- }
-
- if (!visited.contains(nn) && !tovisit.contains(nn)) {
- tovisit.add(nn);
- }
- }
-
- }
- }
- }
- if (q_retval.size()==0)
- return null;
- else
- return q_retval;
- }
-
- private boolean isTaskTrigger(FlagExpressionNode fen,FlagState fs) {
- if (fen instanceof FlagNode)
- return fs.get(((FlagNode)fen).getFlag());
- else
- switch (((FlagOpNode)fen).getOp().getOp()) {
- case Operation.LOGIC_AND:
- return ((isTaskTrigger(((FlagOpNode)fen).getLeft(),fs)) && (isTaskTrigger(((FlagOpNode)fen).getRight(),fs)));
- case Operation.LOGIC_OR:
- return ((isTaskTrigger(((FlagOpNode)fen).getLeft(),fs)) || (isTaskTrigger(((FlagOpNode)fen).getRight(),fs)));
- case Operation.LOGIC_NOT:
- return !(isTaskTrigger(((FlagOpNode)fen).getLeft(),fs));
- default:
- return false;
- }
- }
-
- private boolean isParamOfSameClass(TypeDescriptor typedesc, ClassDescriptor classdesc){
- /* Set subclasses=typeutil.getSubClasses(classdesc);
- if (subclasses!=null){
- if (subclasses.contains(typedesc.getClassDesc()) || typedesc.getClassDesc().equals(classdesc))
- return true;
- else
- return false;
- }
- else{
- if (typedesc.getClassDesc().equals(classdesc))
- return true;
- else
- return false;
- }*/
-
- return typeutil.isSuperorType(classdesc,typedesc.getClassDesc());
-
-
- }
-
-
- private FlagState evalNewObjNode(FlatNode nn){
- TempDescriptor[] tdArray = ((FlatFlagActionNode)nn).readsTemps();
-
- //Under the safe assumption that all the temps in FFAN.NewObject node are of the same type(class)
- ClassDescriptor cd_new=tdArray[0].getType().getClassDesc();
-
- FlagState fstemp=new FlagState(cd_new);
-
- for(Iterator it_tfp=((FlatFlagActionNode)nn).getTempFlagPairs();it_tfp.hasNext();) {
- TempFlagPair tfp=(TempFlagPair)it_tfp.next();
- if (! (tfp.getFlag()==null))// condition checks if the new object was created without any flag setting
- {
- fstemp=fstemp.setFlag(tfp.getFlag(),((FlatFlagActionNode)nn).getFlagChange(tfp));
- }
- else
- break;
- }
- return fstemp;
- }
-
- private FlagState evalTaskExitNode(FlatNode nn,ClassDescriptor cd,FlagState fs){
- FlagState fstemp=fs;
-
- for(Iterator it_tfp=((FlatFlagActionNode)nn).getTempFlagPairs();it_tfp.hasNext();) {
- TempFlagPair tfp=(TempFlagPair)it_tfp.next();
- if (temp.toString().equals(tfp.getTemp().toString()))
- fstemp=fstemp.setFlag(tfp.getFlag(),((FlatFlagActionNode)nn).getFlagChange(tfp));
- }
- return fstemp;
- }
-
-
- private boolean wasFlagStateProcessed(Hashtable sourcenodes,FlagState fs) {
- if (sourcenodes.containsKey(fs))
- return true;
- else
- return false;
- }
-
- /* private boolean existsInQueue(TriggerState ts) {
- throw new Error("Use hashcode/contains of set method to find...no linear search allowed");
- }*/
-
- private boolean existsInQMain(FlagState fs) {
- if (q_main.contains(fs))
- return true;
- else
- return false;
- }
-
- private boolean existsInQ(Queue q,FlagState fs) {
- if (q.contains(fs))
- return true;
- else
- return false;
- }
-
-
- /* public void printAdjList(ClassDescriptor cd) {
- Enumeration e=((Hashtable)Adj_List.get(cd)).keys();
- while(e.hasMoreElements()) {
- FlagState fsv = (FlagState)(e.nextElement());
- System.out.println(fsv.toString((FlagDescriptor [])flags.get(cd)));
- }
- }*/
-
- public void createDOTfile(ClassDescriptor cd) throws java.io.IOException {
-
- File dotfile= new File("graph"+cd.getSymbol()+".dot");
-
- FileOutputStream dotstream=new FileOutputStream(dotfile,true);
-
- FlagState.DOTVisitor.visit(dotstream,((Hashtable)flagstates.get(cd)).values());
-
- }
-
-
- private String getTaskName(TaskDescriptor td) {
- StringTokenizer st = new StringTokenizer(td.toString(),"(");
- return st.nextToken();
- }
-
- /* private boolean edgeexists(Hashtable Adj_List_local,FlagState v1, FlagState v2,String label) {
- Vector edges=(Vector)Adj_List_local.get(v1);
-
- if (edges != null) {
- for(int i=0;i < edges.size();i++) {
- FlagState fs=((Edge)edges.get(i)).getTarget();
- if (fs.equals(v2) && (label.compareTo(((Edge)edges.get(i)).getLabel())==0))
- return true;
- }
- }
- return false;
- }*/
-
- private boolean edgeexists(FlagState fs, Edge newedge){
- for(Iterator it_edges=fs.edges();it_edges.hasNext();){
- Edge e=(Edge)it_edges.next();
- if (newedge.equals(e))
- return true;
- }
- return false;
- }
-
- private Queue createPossibleRuntimeStates(FlagState fs) throws java.io.IOException {
-
- int noOfIterations, externs;
- Hashtable<FlagState,FlagState> sourcenodes;
-
-
- System.out.println("Inside CreatePossible runtime states");
-
- ClassDescriptor cd = fs.getClassDescriptor();
-
- sourcenodes=(Hashtable<FlagState,FlagState>)flagstates.get(cd);
- FlagDescriptor[] fd=(FlagDescriptor[])flags.get(cd);
- externs=((Integer)extern_flags.get(cd)).intValue();
- //System.out.println("No of externs:"+externs);
-
-
- Queue<FlagState> q_ret=new LinkedList<FlagState>();
-
-
- noOfIterations=(1<<externs) - 1;
- // System.out.println("No of iterations: "+noOfIterations);
- boolean BoolValTable[]=new boolean[externs];
-
- for(int i=0; i < externs ; i++) {
- System.out.println(fd[i].getSymbol());
- BoolValTable[i]=fs.get(fd[i]);
- }
-
- /* if (! wasFlagStateProcessed(Adj_List_temp,fs)) {
- Adj_List_temp.put(fs,new Vector());
- }
- */
- if (externs > 0){
- sourcenodes.put(fs,fs);
-
- for(int k=0; k<noOfIterations; k++) {
- for(int j=0; j < externs ;j++) {
- if ((k% (1<<j)) == 0)
- BoolValTable[j]=(!BoolValTable[j]);
- }
-
- FlagState fstemp=fs;
-
- for(int i=0; i < externs;i++) {
- fstemp=fstemp.setFlag(fd[i],BoolValTable[i]);
- }
- fs.addEdge(new Edge(fstemp,"Runtime"));
-
- if (!existsInQMain(fstemp) && ! wasFlagStateProcessed(sourcenodes,fstemp)){
- q_ret.add(fstemp);
- }
-
- }
- }
- return q_ret;
- }
-
-
-
-
- private void processTasksWithPost(ClassDescriptor cd, Hashtable pre) {
- }
-
- private ClassDescriptor processFlatNew(FlatNode fn) {
- if (! (fn.getNext(0).kind() == 13)) {
- return (((FlatNew)fn).getType().getClassDesc());
- }
- return null;
- }
-
-}
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