package Analysis.TaskStateAnalysis;
-import Analysis.TaskStateAnalysis.*;
import IR.*;
import IR.Tree.*;
import IR.Flat.*;
import java.io.FileWriter;
import java.io.FileOutputStream;
-
public class TaskAnalysis {
State state;
Hashtable flagstates;
Hashtable flags;
Hashtable extern_flags;
- Queue<FlagState> q_main;
- Hashtable map;
- TempDescriptor temp;
+ Queue<FlagState> toprocess;
+ TagAnalysis taganalysis;
+ Hashtable cdtorootnodes;
+
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)
+ public TaskAnalysis(State state, TagAnalysis taganalysis)
{
this.state=state;
- this.map=map;
this.typeutil=new TypeUtil(state);
+ this.taganalysis=taganalysis;
+
}
- /** This function builds a table of flags for each class **/
+ /** Builds a table of flags for each class in the Bristlecone program.
+ * It creates two hashtables: one which holds the ClassDescriptors and arrays of
+ * FlagDescriptors as key-value pairs; the other holds the ClassDescriptor and the
+ * number of external flags for that specific class.
+ */
private void getFlagsfromClasses() {
flags=new Hashtable();
extern_flags = new Hashtable();
+ /** Iterate through the classes used in the program to build the table of flags
+ */
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;
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);
}
}
}
}
-
+ /** Method which starts up the analysis
+ *
+ */
+
public void taskAnalysis() throws java.io.IOException {
flagstates=new Hashtable();
Hashtable<FlagState,FlagState> sourcenodes;
+ cdtorootnodes=new Hashtable();
getFlagsfromClasses();
int externs;
- q_main=new LinkedList<FlagState>();
+ toprocess=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>());
+ flagstates.put(cd,new Hashtable<FlagState,FlagState>());
+ cdtorootnodes.put(cd,new Vector());
}
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);
+ fsstartup=fsstartup.setFlag(fd[0],true);
+ fsstartup.setAsSourceNode();
+ ((Vector)cdtorootnodes.get(startupobject)).add(fsstartup);
- if ( q_temp != null) {
- q_main.addAll(q_temp);
- }
+ sourcenodes.put(fsstartup,fsstartup);
+ toprocess.add(fsstartup);
- while (q_main.size() > 0) {
- // ****debug block********
+ /** Looping through the flagstates in the toprocess queue to perform the state analysis */
+ while (!toprocess.isEmpty()) {
+ FlagState trigger=toprocess.poll();
+ createPossibleRuntimeStates(trigger);
- 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********
-
- }
+ analyseTasks(trigger);
}
- //Creating DOT files
+ /** 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);
}
-
+ }
- }
-
+
+ /** Analyses the set of tasks based on the given flagstate, checking
+ * to see which tasks are triggered and what new flagstates are created
+ * from the base flagstate.
+ * @param fs A FlagState object which is used to analyse the task
+ * @see FlagState
+ */
- public Queue<FlagState> analyseTasks(FlagState fs) throws java.io.IOException {
+private void analyseTasks(FlagState fs) {
+ ClassDescriptor cd=fs.getClassDescriptor();
+ Hashtable<FlagState,FlagState> sourcenodes=(Hashtable<FlagState,FlagState>)flagstates.get(cd);
+
+ for(Iterator it_tasks=state.getTaskSymbolTable().getDescriptorsIterator();it_tasks.hasNext();) {
+ TaskDescriptor td = (TaskDescriptor)it_tasks.next();
+ String taskname=td.getSymbol();
+ /** counter to keep track of the number of parameters (of the task being analyzed) that
+ * are satisfied by the flagstate.
+ */
+ int trigger_ctr=0;
+ TempDescriptor temp=null;
+ FlatMethod fm = state.getMethodFlat(td);
- Hashtable<FlagState,FlagState> sourcenodes;
- Queue<FlagState> q_retval;
+ for(int i=0; i < td.numParameters(); i++) {
+ FlagExpressionNode fen=td.getFlag(td.getParameter(i));
+ TagExpressionList tel=td.getTag(td.getParameter(i));
+
+ /** Checking to see if the parameter is of the same type/class as the
+ * flagstate's and also if the flagstate fs triggers the given task*/
+ if (typeutil.isSuperorType(td.getParamType(i).getClassDesc(),cd)
+ && isTaskTrigger_flag(fen,fs)
+ && isTaskTrigger_tag(tel,fs)) {
+ temp=fm.getParameter(i);
+ trigger_ctr++;
+ }
+ }
+ if (trigger_ctr==0) //Look at next task
+ continue;
+ if (trigger_ctr>1)
+ throw new Error("Illegal Operation: A single flagstate cannot satisfy more than one parameter of a task.");
- ClassDescriptor cd=fs.getClassDescriptor();
- sourcenodes=(Hashtable<FlagState,FlagState>)flagstates.get(cd);
+ Set newstates=taganalysis.getFlagStates(td);
+ for(Iterator fsit=newstates.iterator();fsit.hasNext();) {
+ FlagState fsnew=(FlagState) fsit.next();
+ fsnew.setAsSourceNode();
+ fsnew.addAllocatingTask(td);
+ ((Vector)cdtorootnodes.get(fsnew.getClassDescriptor())).add(fsnew);
+
+ if (! ((Hashtable<FlagState,FlagState>)flagstates.get(fsnew.getClassDescriptor())).containsKey(fsnew)) {
+ ((Hashtable<FlagState,FlagState>)flagstates.get(fsnew.getClassDescriptor())).put(fsnew, fsnew);
+ toprocess.add(fsnew);
+ }
+ }
- 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");
+ Stack nodestack=new Stack();
+ HashSet discovered=new HashSet();
+ nodestack.push(fm);
+ discovered.add(fm);
+ //Iterating through the nodes
+
+ while(!nodestack.isEmpty()) {
+ FlatNode fn1 = (FlatNode) nodestack.pop();
- //***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;
-
- fs=canonicalizeFlagState(sourcenodes, 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);
-
- fs_taskexit=canonicalizeFlagState(sourcenodes,fs_taskexit);
-
- Edge newedge=new Edge(fs_taskexit,taskname);
- if (!edgeexists(fs,newedge)) {
- fs.addEdge(newedge);
- }
- // if ((!existsInQMain(fs_taskexit)) && (!existsInQ(q_retval,fs_taskexit)) && !wasFlagStateAnalyzed(sourcenodes,fs_taskexit)){
- if ((!existsInQMain(fs_taskexit)) && (!existsInQ(q_retval,fs_taskexit)) && !wasFlagStateAnalyzed(sourcenodes,fs_taskexit)){
- q_retval.offer(fs_taskexit);
- }
- }
- }
-
- if (!visited.contains(nn) && !tovisit.contains(nn)) {
- tovisit.add(nn);
- }
- }
+ if (fn1.kind()==FKind.FlatReturnNode) {
+ /* Self edge */
+ FEdge newedge=new FEdge(fs, taskname);
+ fs.addEdge(newedge);
+ continue;
+ } else if (fn1.kind()==FKind.FlatFlagActionNode) {
+ FlatFlagActionNode ffan=(FlatFlagActionNode)fn1;
+ if (ffan.getTaskType() == FlatFlagActionNode.PRE) {
+ if (ffan.getTempFlagPairs().hasNext()||ffan.getTempTagPairs().hasNext())
+ throw new Error("PRE FlagActions not supported");
+ } else if (ffan.getTaskType() == FlatFlagActionNode.TASKEXIT) {
+ Vector<FlagState> fsv_taskexit=evalTaskExitNode(ffan,cd,fs,temp);
+ for(Enumeration en=fsv_taskexit.elements();en.hasMoreElements();){
+ FlagState fs_taskexit=(FlagState)en.nextElement();
+ if (!sourcenodes.containsKey(fs_taskexit)) {
+ toprocess.add(fs_taskexit);
}
+ //seen this node already
+ fs_taskexit=canonicalizeFlagState(sourcenodes,fs_taskexit);
+ FEdge newedge=new FEdge(fs_taskexit,taskname);
+ fs.addEdge(newedge);
+ }
+ continue;
+ }
+ }
+ /* Queue other nodes past this one */
+ for(int i=0;i<fn1.numNext();i++) {
+ FlatNode fnext=fn1.getNext(i);
+ if (!discovered.contains(fnext)) {
+ discovered.add(fnext);
+ nodestack.push(fnext);
+ }
}
}
- 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;
+
+/** Determines whether the given flagstate satisfies a
+ * single parameter in the given task.
+ * @param fen FlagExpressionNode
+ * @see FlagExpressionNode
+ * @param fs FlagState
+ * @see FlagState
+ * @return <CODE>true</CODE> if fs satisfies the boolean expression
+ denoted by fen else <CODE>false</CODE>.
+ */
+
+
+private boolean isTaskTrigger_flag(FlagExpressionNode fen,FlagState fs) {
+ if (fen==null)
+ return true;
+ else if (fen instanceof FlagNode)
+ return fs.get(((FlagNode)fen).getFlag());
+ else
+ switch (((FlagOpNode)fen).getOp().getOp()) {
+ case Operation.LOGIC_AND:
+ return ((isTaskTrigger_flag(((FlagOpNode)fen).getLeft(),fs)) && (isTaskTrigger_flag(((FlagOpNode)fen).getRight(),fs)));
+ case Operation.LOGIC_OR:
+ return ((isTaskTrigger_flag(((FlagOpNode)fen).getLeft(),fs)) || (isTaskTrigger_flag(((FlagOpNode)fen).getRight(),fs)));
+ case Operation.LOGIC_NOT:
+ return !(isTaskTrigger_flag(((FlagOpNode)fen).getLeft(),fs));
+ default:
+ return false;
}
+}
+
+private boolean isTaskTrigger_tag(TagExpressionList tel, FlagState fs){
- 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));
+ if (tel!=null){
+ for (int i=0;i<tel.numTags() ; i++){
+ switch (fs.getTagCount(tel.getType(i))){
+ case FlagState.ONETAG:
+ case FlagState.MULTITAGS:
+ break;
+ case FlagState.NOTAGS:
+ return false;
}
- return fstemp;
- }
-
-
- private boolean wasFlagStateCreated(Hashtable sourcenodes,FlagState fs) {
- if (sourcenodes.containsKey(fs))
- return true;
- else
- return false;
- }
-
- private boolean wasFlagStateAnalyzed(Hashtable sourcenodes, FlagState fs){
- Iterator it_edges=((FlagState)sourcenodes.get(fs)).edges();
- if (it_edges.hasNext())
- return true;
- else
- return false;
}
-
- private FlagState canonicalizeFlagState(Hashtable sourcenodes, FlagState fs){
- if (wasFlagStateCreated(sourcenodes, fs))
- return (FlagState)sourcenodes.get(fs);
- else{
- sourcenodes.put(fs,fs);
- return fs;
- }
}
-
- /* 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;
- }
-
+ return true;
+}
- /* 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)));
+/*private int tagTypeCount(TagExpressionList tel, String tagtype){
+ int ctr=0;
+ for(int i=0;i<tel.numTags() ; i++){
+ if (tel.getType(i).equals(tagtype))
+ ctr++;
}
- }*/
+ return ctr;
+} */
- public void createDOTfile(ClassDescriptor cd) throws java.io.IOException {
-
- File dotfile= new File("graph"+cd.getSymbol()+".dot");
+ private Vector<FlagState> evalTaskExitNode(FlatFlagActionNode ffan,ClassDescriptor cd,FlagState fs, TempDescriptor temp){
+ FlagState fstemp=fs;
+ Vector<FlagState> processed=new Vector<FlagState>();
- FileOutputStream dotstream=new FileOutputStream(dotfile,true);
+ //Process the flag changes
- FlagState.DOTVisitor.visit(dotstream,((Hashtable)flagstates.get(cd)).values());
- }
+ for(Iterator it_tfp=ffan.getTempFlagPairs();it_tfp.hasNext();) {
+ TempFlagPair tfp=(TempFlagPair)it_tfp.next();
+ if (temp==tfp.getTemp())
+ fstemp=fstemp.setFlag(tfp.getFlag(),ffan.getFlagChange(tfp));
+ }
+ //Process the tag changes
- 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);
+ processed.add(fstemp);
- 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;
+ //Process clears first
+ for(Iterator it_ttp=ffan.getTempTagPairs();it_ttp.hasNext();) {
+ TempTagPair ttp=(TempTagPair)it_ttp.next();
+
+ if (temp==ttp.getTemp()) {
+ Vector<FlagState> oldprocess=processed;
+ processed=new Vector<FlagState>();
+
+ for (Enumeration en=oldprocess.elements();en.hasMoreElements();){
+ FlagState fsworking=(FlagState)en.nextElement();
+ if (!ffan.getTagChange(ttp)){
+ processed.addAll(Arrays.asList(fsworking.clearTag(ttp.getTag())));
+ } else processed.add(fsworking);
+ }
}
}
- 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;
+ //Process sets next
+ for(Iterator it_ttp=ffan.getTempTagPairs();it_ttp.hasNext();) {
+ TempTagPair ttp=(TempTagPair)it_ttp.next();
+
+ if (temp==ttp.getTemp()) {
+ Vector<FlagState> oldprocess=processed;
+ processed=new Vector<FlagState>();
+
+ for (Enumeration en=oldprocess.elements();en.hasMoreElements();){
+ FlagState fsworking=(FlagState)en.nextElement();
+ if (ffan.getTagChange(ttp)){
+ processed.addAll(Arrays.asList(fsworking.setTag(ttp.getTag())));
+ } else processed.add(fsworking);
}
- return false;
+ }
}
+ return processed;
+ }
+
- 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);
-
+ private FlagState canonicalizeFlagState(Hashtable sourcenodes, FlagState fs){
+ if (sourcenodes.containsKey(fs))
+ return (FlagState)sourcenodes.get(fs);
+ else{
+ sourcenodes.put(fs,fs);
+ return fs;
+ }
+ }
- Queue<FlagState> q_ret=new LinkedList<FlagState>();
+ /** Creates a DOT file using the flagstates for a given class
+ * @param cd ClassDescriptor of the class
+ * @throws java.io.IOException
+ * @see ClassDescriptor
+ */
+
+ public void createDOTfile(ClassDescriptor cd) throws java.io.IOException {
+ File dotfile_flagstates= new File("graph"+cd.getSymbol()+".dot");
+ FileOutputStream dotstream=new FileOutputStream(dotfile_flagstates,true);
+ FlagState.DOTVisitor.visit(dotstream,((Hashtable)flagstates.get(cd)).values());
+ }
-
- noOfIterations=(1<<externs) - 1;
- // System.out.println("No of iterations: "+noOfIterations);
- boolean BoolValTable[]=new boolean[externs];
+ /** Returns the flag states for the class descriptor. */
+ public Set getFlagStates(ClassDescriptor cd) {
+ if (flagstates.containsKey(cd))
+ return ((Hashtable)flagstates.get(cd)).keySet();
+ else
+ return null;
+ }
- for(int i=0; i < externs ; i++) {
- System.out.println(fd[i].getSymbol());
- BoolValTable[i]=fs.get(fd[i]);
- }
- /* if (! wasFlagStateCreated(Adj_List_temp,fs)) {
- Adj_List_temp.put(fs,new Vector());
- }
- */
- if (externs > 0){
- fs=canonicalizeFlagState(sourcenodes,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]);
- }
- fstemp=canonicalizeFlagState(sourcenodes,fstemp);
- fs.addEdge(new Edge(fstemp,"Runtime"));
-
- if (!existsInQMain(fstemp) && ! wasFlagStateAnalyzed(sourcenodes, fstemp)){
- q_ret.add(fstemp);
- }
-
- }
- }
- return q_ret;
- }
-
+ private void createPossibleRuntimeStates(FlagState fs) {
+ ClassDescriptor cd = fs.getClassDescriptor();
+ Hashtable<FlagState,FlagState> sourcenodes=(Hashtable<FlagState,FlagState>)flagstates.get(cd);
+ FlagDescriptor[] fd=(FlagDescriptor[])flags.get(cd);
+ int externs=((Integer)extern_flags.get(cd)).intValue();
+
+ if(externs==0)
+ return;
+ int noOfIterations=(1<<externs) - 1;
+ boolean BoolValTable[]=new boolean[externs];
- private void processTasksWithPost(ClassDescriptor cd, Hashtable pre) {
+ for(int i=0; i < externs ; i++) {
+ BoolValTable[i]=fs.get(fd[i]);
}
- private ClassDescriptor processFlatNew(FlatNode fn) {
- if (! (fn.getNext(0).kind() == 13)) {
- return (((FlatNew)fn).getType().getClassDesc());
+ 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]);
}
- return null;
+ if (!sourcenodes.containsKey(fstemp))
+ toprocess.add(fstemp);
+
+ fstemp=canonicalizeFlagState(sourcenodes,fstemp);
+ fs.addEdge(new FEdge(fstemp,"Runtime"));
}
+ }
+
+ public Vector getRootNodes(ClassDescriptor cd){
+ return (Vector)cdtorootnodes.get(cd);
+ }
+
+
+
+}
-}
projects / IRC.git / blobdiff