Change tabbing for everything....
[IRC.git] / Robust / src / Analysis / Scheduling / ScheduleAnalysis.java
index f65c08fe8aabf757d745477b36a324ee1af77276..5673edaf8a7a0f6d37fffbc9b7ffa72ebf9f34c6 100644 (file)
@@ -8,1029 +8,1036 @@ import java.util.*;
 /** This class holds flag transition diagram(s) can be put on one core.
  */
 public class ScheduleAnalysis {
-    
-    State state;
-    TaskAnalysis taskanalysis;
-    Vector<ScheduleNode> scheduleNodes;
-    Vector<ClassNode> classNodes;
-    Vector<ScheduleEdge> scheduleEdges;
-    Hashtable<ClassDescriptor, ClassNode> cd2ClassNode;
-    boolean sorted = false;
-
-    int transThreshold;
-    
-    int coreNum;
-    Vector<Vector<ScheduleNode>> scheduleGraphs;
-    Vector<Vector<Schedule>> schedulings;
-
-    public ScheduleAnalysis(State state, TaskAnalysis taskanalysis) {
-       this.state = state;
-       this.taskanalysis = taskanalysis;
-       this.scheduleNodes = new Vector<ScheduleNode>();
-       this.classNodes = new Vector<ClassNode>();
-       this.scheduleEdges = new Vector<ScheduleEdge>();
-       this.cd2ClassNode = new Hashtable<ClassDescriptor, ClassNode>();
-       this.transThreshold = 45;
-       this.coreNum = -1;
-       this.scheduleGraphs = null;
-       this.schedulings = null;
-    } 
-    
-    public void setTransThreshold(int tt) {
-       this.transThreshold = tt;
-    }
-    
-    public int getCoreNum() {
-        return coreNum;
+
+  State state;
+  TaskAnalysis taskanalysis;
+  Vector<ScheduleNode> scheduleNodes;
+  Vector<ClassNode> classNodes;
+  Vector<ScheduleEdge> scheduleEdges;
+  Hashtable<ClassDescriptor, ClassNode> cd2ClassNode;
+  boolean sorted = false;
+
+  int transThreshold;
+
+  int coreNum;
+  Vector<Vector<ScheduleNode>> scheduleGraphs;
+  Vector<Vector<Schedule>> schedulings;
+
+  public ScheduleAnalysis(State state, TaskAnalysis taskanalysis) {
+    this.state = state;
+    this.taskanalysis = taskanalysis;
+    this.scheduleNodes = new Vector<ScheduleNode>();
+    this.classNodes = new Vector<ClassNode>();
+    this.scheduleEdges = new Vector<ScheduleEdge>();
+    this.cd2ClassNode = new Hashtable<ClassDescriptor, ClassNode>();
+    this.transThreshold = 45;
+    this.coreNum = -1;
+    this.scheduleGraphs = null;
+    this.schedulings = null;
+  }
+
+  public void setTransThreshold(int tt) {
+    this.transThreshold = tt;
+  }
+
+  public int getCoreNum() {
+    return coreNum;
+  }
+
+  public void setCoreNum(int coreNum) {
+    this.coreNum = coreNum;
+  }
+
+  public Iterator getScheduleGraphs() {
+    return this.scheduleGraphs.iterator();
+  }
+
+  public Iterator getSchedulingsIter() {
+    return this.schedulings.iterator();
+  }
+
+  public Vector<Vector<Schedule>> getSchedulings() {
+    return this.schedulings;
+  }
+
+  // for test
+  public Vector<ScheduleEdge> getSEdges4Test() {
+    return scheduleEdges;
+  }
+
+  public void preSchedule() {
+    Hashtable<ClassDescriptor, ClassNode> cdToCNodes = new Hashtable<ClassDescriptor, ClassNode>();
+    // Build the combined flag transition diagram
+    // First, for each class create a ClassNode
+    for(Iterator it_classes = state.getClassSymbolTable().getDescriptorsIterator(); it_classes.hasNext(); ) {
+      ClassDescriptor cd = (ClassDescriptor) it_classes.next();
+      Set<FlagState> fStates = taskanalysis.getFlagStates(cd);
+
+      //Sort flagState nodes inside this ClassNode
+      Vector<FlagState> sFStates = FlagState.DFS.topology(fStates, null);
+
+      Vector rootnodes  = taskanalysis.getRootNodes(cd);
+      if(((rootnodes != null) && (rootnodes.size() > 0)) || (cd.getSymbol().equals(TypeUtil.StartupClass))) {
+       ClassNode cNode = new ClassNode(cd, sFStates);
+       cNode.setSorted(true);
+       classNodes.add(cNode);
+       cd2ClassNode.put(cd, cNode);
+       cdToCNodes.put(cd, cNode);
+       cNode.calExeTime();
+
+       // for test
+       if(cd.getSymbol().equals("C")) {
+         cNode.setTransTime(45);
+       }
+      }
+      fStates = null;
+      sFStates = null;
     }
 
-    public void setCoreNum(int coreNum) {
-       this.coreNum = coreNum;
+    ScheduleNode startupNode = null;
+    // For each ClassNode create a ScheduleNode containing it
+    int i = 0;
+    for(i = 0; i < classNodes.size(); i++) {
+      ClassNode cn = classNodes.elementAt(i);
+      ScheduleNode sn = new ScheduleNode(cn, 0);
+      if(cn.getClassDescriptor().getSymbol().equals(TypeUtil.StartupClass)) {
+       startupNode = sn;
+      }
+      cn.setScheduleNode(sn);
+      scheduleNodes.add(sn);
+      try {
+       sn.calExeTime();
+      } catch (Exception e) {
+       e.printStackTrace();
+      }
     }
-    
-    public Iterator getScheduleGraphs() {
-       return this.scheduleGraphs.iterator();
+
+    // Create 'new' edges between the ScheduleNodes.
+    Vector<ScheduleEdge> toBreakDown = new Vector<ScheduleEdge>();
+    for(i = 0; i < classNodes.size(); i++) {
+      ClassNode cNode = classNodes.elementAt(i);
+      ClassDescriptor cd = cNode.getClassDescriptor();
+      Vector rootnodes  = taskanalysis.getRootNodes(cd);
+      if(rootnodes != null) {
+       for(int h = 0; h < rootnodes.size(); h++){
+         FlagState root=(FlagState)rootnodes.elementAt(h);
+         Vector allocatingTasks = root.getAllocatingTasks();
+         if(allocatingTasks != null) {
+           for(int k = 0; k < allocatingTasks.size(); k++) {
+             TaskDescriptor td = (TaskDescriptor)allocatingTasks.elementAt(k);
+             Vector<FEdge> fev = (Vector<FEdge>)taskanalysis.getFEdgesFromTD(td);
+             int numEdges = fev.size();
+             ScheduleNode sNode = cNode.getScheduleNode();
+             for(int j = 0; j < numEdges; j++) {
+               FEdge pfe = fev.elementAt(j);
+               FEdge.NewObjInfo noi = pfe.getNewObjInfo(cd);
+               if ((noi == null) || (noi.getNewRate() == 0) || (noi.getProbability() == 0)) {
+                 // fake creating edge, do not need to create corresponding 'new' edge
+                 continue;
+               }
+               if(noi.getRoot() == null) {
+                 // set root FlagState
+                 noi.setRoot(root);
+               }
+               FlagState pfs = (FlagState)pfe.getTarget();
+               ClassDescriptor pcd = pfs.getClassDescriptor();
+               ClassNode pcNode = cdToCNodes.get(pcd);
+
+               ScheduleEdge sEdge = new ScheduleEdge(sNode, "new", root, ScheduleEdge.NEWEDGE, 0);
+               sEdge.setFEdge(pfe);
+               sEdge.setSourceCNode(pcNode);
+               sEdge.setTargetCNode(cNode);
+               sEdge.setTargetFState(root);
+               sEdge.setNewRate(noi.getNewRate());
+               sEdge.setProbability(noi.getProbability());
+               pcNode.getScheduleNode().addEdge(sEdge);
+               scheduleEdges.add(sEdge);
+               if((j !=0 ) || (k != 0) || (h != 0)) {
+                 toBreakDown.add(sEdge);
+               }
+             }
+             fev = null;
+           }
+           allocatingTasks = null;
+         }
+       }
+       rootnodes = null;
+      }
     }
-    
-    public Iterator getSchedulingsIter() {
-       return this.schedulings.iterator();
+    cdToCNodes = null;
+
+    // Break down the 'cycle's
+    try {
+      for(i = 0; i < toBreakDown.size(); i++ ) {
+       cloneSNodeList(toBreakDown.elementAt(i), false);
+      }
+      toBreakDown = null;
+    } catch (Exception e) {
+      e.printStackTrace();
+      System.exit(-1);
     }
-    
-    public Vector<Vector<Schedule>> getSchedulings() {
-       return this.schedulings;
+
+    // Remove fake 'new' edges
+    for(i = 0; i < scheduleEdges.size(); i++) {
+      ScheduleEdge se = (ScheduleEdge)scheduleEdges.elementAt(i);
+      if((0 == se.getNewRate()) || (0 == se.getProbability())) {
+       scheduleEdges.removeElement(se);
+       scheduleNodes.removeElement(se.getTarget());
+      }
     }
-    
-    // for test
-    public Vector<ScheduleEdge> getSEdges4Test() {
-       return scheduleEdges;
+
+    // Do topology sort of the ClassNodes and ScheduleEdges.
+    Vector<ScheduleEdge> ssev = new Vector<ScheduleEdge>();
+    Vector<ScheduleNode> tempSNodes = ClassNode.DFS.topology(scheduleNodes, ssev);
+    scheduleNodes.removeAllElements();
+    scheduleNodes = tempSNodes;
+    tempSNodes = null;
+    scheduleEdges.removeAllElements();
+    scheduleEdges = ssev;
+    ssev = null;
+    sorted = true;
+
+    // Set the cid of these ScheduleNode
+    Queue<ScheduleNode> toVisit = new LinkedList<ScheduleNode>();
+    toVisit.add(startupNode);
+    while(!toVisit.isEmpty()) {
+      ScheduleNode sn = toVisit.poll();
+      if(sn.getCid() == -1) {
+       // not visited before
+       sn.setCid(ScheduleNode.colorID++);
+       Iterator it_edge = sn.edges();
+       while(it_edge.hasNext()) {
+         toVisit.add((ScheduleNode)((ScheduleEdge)it_edge.next()).getTarget());
+       }
+      }
     }
-    
-    public void preSchedule() {
-       Hashtable<ClassDescriptor, ClassNode> cdToCNodes = new Hashtable<ClassDescriptor, ClassNode>();
-       // Build the combined flag transition diagram
-       // First, for each class create a ClassNode
-       for(Iterator it_classes = state.getClassSymbolTable().getDescriptorsIterator(); it_classes.hasNext(); ) {
-           ClassDescriptor cd = (ClassDescriptor) it_classes.next();
-           Set<FlagState> fStates = taskanalysis.getFlagStates(cd);
-           
-           //Sort flagState nodes inside this ClassNode
-           Vector<FlagState> sFStates = FlagState.DFS.topology(fStates, null);
-           
-           Vector rootnodes  = taskanalysis.getRootNodes(cd);
-           if(((rootnodes != null) && (rootnodes.size() > 0)) || (cd.getSymbol().equals(TypeUtil.StartupClass))) {
-               ClassNode cNode = new ClassNode(cd, sFStates);
-               cNode.setSorted(true);
-               classNodes.add(cNode);
-               cd2ClassNode.put(cd, cNode);
-               cdToCNodes.put(cd, cNode);
-               cNode.calExeTime();
-               
-               // for test
-               if(cd.getSymbol().equals("C")) {
-                   cNode.setTransTime(45);
-               }
-           }
-           fStates = null;
-           sFStates = null;
-       }
-
-       ScheduleNode startupNode = null;
-       // For each ClassNode create a ScheduleNode containing it
-       int i = 0;
-       for(i = 0; i < classNodes.size(); i++) {
-           ClassNode cn = classNodes.elementAt(i);
-           ScheduleNode sn = new ScheduleNode(cn, 0);
-           if(cn.getClassDescriptor().getSymbol().equals(TypeUtil.StartupClass)) {
-               startupNode = sn;
+
+    SchedulingUtil.printScheduleGraph("scheduling_ori.dot", this.scheduleNodes);
+  }
+
+  public void scheduleAnalysis() {
+    // First iteration
+    int i = 0;
+    //Access the ScheduleEdges in reverse topology order
+    Hashtable<FEdge, Vector<ScheduleEdge>> fe2ses = new Hashtable<FEdge, Vector<ScheduleEdge>>();
+    Hashtable<ScheduleNode, Vector<FEdge>> sn2fes = new Hashtable<ScheduleNode, Vector<FEdge>>();
+    ScheduleNode preSNode = null;
+    for(i = scheduleEdges.size(); i > 0; i--) {
+      ScheduleEdge se = (ScheduleEdge)scheduleEdges.elementAt(i-1);
+      if(ScheduleEdge.NEWEDGE == se.getType()) {
+       if(preSNode == null) {
+         preSNode = (ScheduleNode)se.getSource();
+       }
+
+       boolean split = false;
+       FEdge fe = se.getFEdge();
+       if(fe.getSource() == fe.getTarget()) {
+         // back edge
+         try {
+           int repeat = (int)Math.ceil(se.getNewRate() * se.getProbability() / 100);
+           int rate = 0;
+           if(repeat > 1){
+             for(int j = 1; j< repeat; j++ ) {
+               cloneSNodeList(se, true);
+             }
+             se.setNewRate(1);
+             se.setProbability(100);
            }
-           cn.setScheduleNode(sn);
-           scheduleNodes.add(sn);
            try {
-               sn.calExeTime();
+             rate = (int)Math.ceil(se.getListExeTime()/ calInExeTime(se.getSourceFState()));
            } catch (Exception e) {
-               e.printStackTrace();
+             e.printStackTrace();
+           }
+           for(int j = rate - 1; j > 0; j--) {
+             for(int k = repeat; k > 0; k--) {
+               cloneSNodeList(se, true);
+             }
            }
-       }
-       
-       // Create 'new' edges between the ScheduleNodes.
-       Vector<ScheduleEdge> toBreakDown = new Vector<ScheduleEdge>();
-       for(i = 0; i < classNodes.size(); i++) {
-           ClassNode cNode = classNodes.elementAt(i);
-           ClassDescriptor cd = cNode.getClassDescriptor();
-           Vector rootnodes  = taskanalysis.getRootNodes(cd);              
-           if(rootnodes != null) {
-               for(int h = 0; h < rootnodes.size(); h++){
-                   FlagState root=(FlagState)rootnodes.elementAt(h);
-                   Vector allocatingTasks = root.getAllocatingTasks();
-                   if(allocatingTasks != null) {
-                       for(int k = 0; k < allocatingTasks.size(); k++) {
-                           TaskDescriptor td = (TaskDescriptor)allocatingTasks.elementAt(k);
-                           Vector<FEdge> fev = (Vector<FEdge>)taskanalysis.getFEdgesFromTD(td);
-                           int numEdges = fev.size();
-                           ScheduleNode sNode = cNode.getScheduleNode();
-                           for(int j = 0; j < numEdges; j++) {
-                               FEdge pfe = fev.elementAt(j);
-                               FEdge.NewObjInfo noi = pfe.getNewObjInfo(cd);
-                               if ((noi == null) || (noi.getNewRate() == 0) || (noi.getProbability() == 0)) {
-                                   // fake creating edge, do not need to create corresponding 'new' edge
-                                   continue;
-                               }
-                               if(noi.getRoot() == null) {
-                                   // set root FlagState
-                                   noi.setRoot(root);
-                               }
-                               FlagState pfs = (FlagState)pfe.getTarget();
-                               ClassDescriptor pcd = pfs.getClassDescriptor();
-                               ClassNode pcNode = cdToCNodes.get(pcd);
-                               
-                               ScheduleEdge sEdge = new ScheduleEdge(sNode, "new", root, ScheduleEdge.NEWEDGE, 0);
-                               sEdge.setFEdge(pfe);
-                               sEdge.setSourceCNode(pcNode);
-                               sEdge.setTargetCNode(cNode);
-                               sEdge.setTargetFState(root);
-                               sEdge.setNewRate(noi.getNewRate());
-                               sEdge.setProbability(noi.getProbability());
-                               pcNode.getScheduleNode().addEdge(sEdge);
-                               scheduleEdges.add(sEdge);
-                               if((j !=0 ) || (k != 0) || (h != 0)) {
-                                   toBreakDown.add(sEdge);
-                               }
-                           }
-                           fev = null;
-                       }
-                       allocatingTasks = null;
+         } catch (Exception e) {
+           e.printStackTrace();
+           System.exit(-1);
+         }
+       } else {
+         // if preSNode is not the same as se's source ScheduleNode
+         // handle any ScheduleEdges previously put into fe2ses whose source ScheduleNode is preSNode
+         boolean same = (preSNode == se.getSource());
+         if(!same) {
+           // check the topology sort, only process those after se.getSource()
+           if(preSNode.getFinishingTime() < se.getSource().getFinishingTime()) {
+             if(sn2fes.containsKey(preSNode)) {
+               Vector<FEdge> fes = sn2fes.remove(preSNode);
+               for(int j = 0; j < fes.size(); j++) {
+                 FEdge tempfe = fes.elementAt(j);
+                 Vector<ScheduleEdge> ses = fe2ses.get(tempfe);
+                 ScheduleEdge tempse = ses.elementAt(0);
+                 int temptime = tempse.getListExeTime();
+                 // find out the ScheduleEdge with least exeTime
+                 for(int k = 1; k < ses.size(); k++) {
+                   int ttemp = ses.elementAt(k).getListExeTime();
+                   if(ttemp < temptime) {
+                     tempse = ses.elementAt(k);
+                     temptime = ttemp;
                    }
-               }
-               rootnodes = null;
+                 }
+                 // handle the tempse
+                 handleScheduleEdge(tempse, true);
+                 ses.removeElement(tempse);
+                 // handle other ScheduleEdges
+                 for(int k = 0; k < ses.size(); k++) {
+                   handleScheduleEdge(ses.elementAt(k), false);
+                 }
+                 ses = null;
+                 fe2ses.remove(tempfe);
+               }
+               fes = null;
+             }
            }
-       }
-       cdToCNodes = null;
-       
-       // Break down the 'cycle's
-       try {
-           for(i = 0; i < toBreakDown.size(); i++ ) {
-               cloneSNodeList(toBreakDown.elementAt(i), false);
-           }
-           toBreakDown = null;
-       } catch (Exception e) {
-           e.printStackTrace();
-           System.exit(-1);
-       }
-       
-       // Remove fake 'new' edges
-       for(i = 0; i < scheduleEdges.size(); i++) {
-           ScheduleEdge se = (ScheduleEdge)scheduleEdges.elementAt(i);
-           if((0 == se.getNewRate()) || (0 == se.getProbability())) {
-               scheduleEdges.removeElement(se);
-               scheduleNodes.removeElement(se.getTarget());
+           preSNode = (ScheduleNode)se.getSource();
+         }
+
+         // if fe is the last task inside this ClassNode, delay the expanding and merging until we find all such 'new' edges
+         // associated with a last task inside this ClassNode
+         if(!fe.getTarget().edges().hasNext()) {
+           if(fe2ses.get(fe) == null) {
+             fe2ses.put(fe, new Vector<ScheduleEdge>());
            }
-       }
-       
-       // Do topology sort of the ClassNodes and ScheduleEdges.
-       Vector<ScheduleEdge> ssev = new Vector<ScheduleEdge>();
-       Vector<ScheduleNode> tempSNodes = ClassNode.DFS.topology(scheduleNodes, ssev);
-       scheduleNodes.removeAllElements();
-       scheduleNodes = tempSNodes;
-       tempSNodes = null;
-       scheduleEdges.removeAllElements();
-       scheduleEdges = ssev;
-       ssev = null;
-       sorted = true;
-       
-       // Set the cid of these ScheduleNode
-       Queue<ScheduleNode> toVisit = new LinkedList<ScheduleNode>();
-       toVisit.add(startupNode);
-       while(!toVisit.isEmpty()) {
-           ScheduleNode sn = toVisit.poll();
-           if(sn.getCid() == -1) {
-               // not visited before
-               sn.setCid(ScheduleNode.colorID++);
-               Iterator it_edge = sn.edges();
-               while(it_edge.hasNext()) {
-                   toVisit.add((ScheduleNode)((ScheduleEdge)it_edge.next()).getTarget());
-               }
-           }
-       }
-       
-       SchedulingUtil.printScheduleGraph("scheduling_ori.dot", this.scheduleNodes);
-    }
-    
-    public void scheduleAnalysis() {
-       // First iteration
-       int i = 0; 
-       //Access the ScheduleEdges in reverse topology order
-       Hashtable<FEdge, Vector<ScheduleEdge>> fe2ses = new Hashtable<FEdge, Vector<ScheduleEdge>>();
-       Hashtable<ScheduleNode, Vector<FEdge>> sn2fes = new Hashtable<ScheduleNode, Vector<FEdge>>();
-       ScheduleNode preSNode = null;
-       for(i = scheduleEdges.size(); i > 0; i--) {
-           ScheduleEdge se = (ScheduleEdge)scheduleEdges.elementAt(i-1);
-           if(ScheduleEdge.NEWEDGE == se.getType()) {
-               if(preSNode == null) {
-                   preSNode = (ScheduleNode)se.getSource();
-               }
-           
-               boolean split = false;
-               FEdge fe = se.getFEdge();
-               if(fe.getSource() == fe.getTarget()) {
-                   // back edge
-                   try {
-                       int repeat = (int)Math.ceil(se.getNewRate() * se.getProbability() / 100);
-                       int rate = 0;
-                       if(repeat > 1){
-                           for(int j = 1; j< repeat; j++ ) {
-                               cloneSNodeList(se, true);
-                           }
-                           se.setNewRate(1);
-                           se.setProbability(100);
-                       }  
-                       try {
-                           rate = (int)Math.ceil(se.getListExeTime()/ calInExeTime(se.getSourceFState()));
-                       } catch (Exception e) {
-                           e.printStackTrace();
-                       }
-                       for(int j = rate - 1; j > 0; j--) {
-                           for(int k = repeat; k > 0; k--) {
-                               cloneSNodeList(se, true);
-                           }
-                       }
-                   } catch (Exception e) {
-                       e.printStackTrace();
-                       System.exit(-1);
-                   }
-               } else {
-                   // if preSNode is not the same as se's source ScheduleNode
-                   // handle any ScheduleEdges previously put into fe2ses whose source ScheduleNode is preSNode
-                   boolean same = (preSNode == se.getSource());
-                   if(!same) {
-                       // check the topology sort, only process those after se.getSource()
-                       if(preSNode.getFinishingTime() < se.getSource().getFinishingTime()) {
-                           if(sn2fes.containsKey(preSNode)) {
-                               Vector<FEdge> fes = sn2fes.remove(preSNode);
-                               for(int j = 0; j < fes.size(); j++) {
-                                   FEdge tempfe = fes.elementAt(j);
-                                   Vector<ScheduleEdge> ses = fe2ses.get(tempfe);
-                                   ScheduleEdge tempse = ses.elementAt(0);
-                                   int temptime = tempse.getListExeTime();
-                                   // find out the ScheduleEdge with least exeTime
-                                   for(int k = 1; k < ses.size(); k++) {
-                                       int ttemp = ses.elementAt(k).getListExeTime();
-                                       if(ttemp < temptime) {
-                                           tempse = ses.elementAt(k);
-                                           temptime = ttemp;
-                                       }
-                                   }
-                                   // handle the tempse
-                                   handleScheduleEdge(tempse, true);
-                                   ses.removeElement(tempse);
-                                   // handle other ScheduleEdges
-                                   for(int k = 0; k < ses.size(); k++) {
-                                       handleScheduleEdge(ses.elementAt(k), false);
-                                   }
-                                   ses = null;
-                                   fe2ses.remove(tempfe);
-                               }
-                               fes = null;
-                           }
-                       }
-                       preSNode = (ScheduleNode)se.getSource();
-                   }
-                   
-                   // if fe is the last task inside this ClassNode, delay the expanding and merging until we find all such 'new' edges
-                   // associated with a last task inside this ClassNode
-                   if(!fe.getTarget().edges().hasNext()) {
-                       if(fe2ses.get(fe) == null) {
-                           fe2ses.put(fe, new Vector<ScheduleEdge>());
-                       }
-                       if(sn2fes.get((ScheduleNode)se.getSource()) == null) {
-                           sn2fes.put((ScheduleNode)se.getSource(), new Vector<FEdge>());
-                       }
-                       if(!fe2ses.get(fe).contains(se)) {
-                           fe2ses.get(fe).add(se);
-                       }
-                       if(!sn2fes.get((ScheduleNode)se.getSource()).contains(fe)) {
-                           sn2fes.get((ScheduleNode)se.getSource()).add(fe);
-                       }
-                   } else {
-                       // As this is not a last task, first handle available ScheduleEdges previously put into fe2ses
-                       if((same) && (sn2fes.containsKey(preSNode))) {
-                           Vector<FEdge> fes = sn2fes.remove(preSNode);
-                           for(int j = 0; j < fes.size(); j++) {
-                               FEdge tempfe = fes.elementAt(j);
-                               Vector<ScheduleEdge> ses = fe2ses.get(tempfe);
-                               ScheduleEdge tempse = ses.elementAt(0);
-                               int temptime = tempse.getListExeTime();
-                               // find out the ScheduleEdge with least exeTime
-                               for(int k = 1; k < ses.size(); k++) {
-                                   int ttemp = ses.elementAt(k).getListExeTime();
-                                   if(ttemp < temptime) {
-                                       tempse = ses.elementAt(k);
-                                       temptime = ttemp;
-                                   }
-                               }
-                               // handle the tempse
-                               handleScheduleEdge(tempse, true);
-                               ses.removeElement(tempse);
-                               // handle other ScheduleEdges
-                               for(int k = 0; k < ses.size(); k++) {
-                                   handleScheduleEdge(ses.elementAt(k), false);
-                               }
-                               ses = null;
-                               fe2ses.remove(tempfe);
-                           }
-                           fes = null;
-                       }
-                       
-                       if((!(se.getTransTime() < this.transThreshold)) && (se.getSourceCNode().getTransTime() < se.getTransTime())) {
-                           split = true;
-                           splitSNode(se, true);
-                       } else {
-                           // handle this ScheduleEdge
-                           handleScheduleEdge(se, true);
-                       }
-                   }                   
-               }
+           if(sn2fes.get((ScheduleNode)se.getSource()) == null) {
+             sn2fes.put((ScheduleNode)se.getSource(), new Vector<FEdge>());
            }
-       }
-       if(!fe2ses.isEmpty()) {
-           Set<FEdge> keys = fe2ses.keySet();
-           Iterator it_keys = keys.iterator();
-           while(it_keys.hasNext()) {
-               FEdge tempfe = (FEdge)it_keys.next();
-               Vector<ScheduleEdge> ses = fe2ses.get(tempfe);
-               ScheduleEdge tempse = ses.elementAt(0);
-               int temptime = tempse.getListExeTime();
-               // find out the ScheduleEdge with least exeTime
-               for(int k = 1; k < ses.size(); k++) {
-                   int ttemp = ses.elementAt(k).getListExeTime();
-                   if(ttemp < temptime) {
-                       tempse = ses.elementAt(k);
-                       temptime = ttemp;
-                   }
-               }
-               // handle the tempse
-               handleScheduleEdge(tempse, true);
-               ses.removeElement(tempse);
-               // handle other ScheduleEdges
-               for(int k = 0; k < ses.size(); k++) {
-                   handleScheduleEdge(ses.elementAt(k), false);
-               }
-               ses = null;
-           }
-           keys = null;
-           fe2ses.clear();
-           sn2fes.clear();
-       }
-       fe2ses = null;
-       sn2fes = null;
-       
-       SchedulingUtil.printScheduleGraph("scheduling_extend.dot", this.scheduleNodes);
-    }
-    
-    private void handleScheduleEdge(ScheduleEdge se, boolean merge) {
-       try {
-           int rate = 0;
-           int repeat = (int)Math.ceil(se.getNewRate() * se.getProbability() / 100);
-           if(merge) {
-               try {
-                   if(se.getListExeTime() == 0) {
-                               rate = repeat;
-                       } else {
-                               rate = (int)Math.ceil((se.getTransTime() - calInExeTime(se.getSourceFState()))/ se.getListExeTime());
-                       }
-                   if(rate < 0 ) {
-                       rate = 0;
-                   }
-               } catch (Exception e) {
-                   e.printStackTrace();
+           if(!fe2ses.get(fe).contains(se)) {
+             fe2ses.get(fe).add(se);
+           }
+           if(!sn2fes.get((ScheduleNode)se.getSource()).contains(fe)) {
+             sn2fes.get((ScheduleNode)se.getSource()).add(fe);
+           }
+         } else {
+           // As this is not a last task, first handle available ScheduleEdges previously put into fe2ses
+           if((same) && (sn2fes.containsKey(preSNode))) {
+             Vector<FEdge> fes = sn2fes.remove(preSNode);
+             for(int j = 0; j < fes.size(); j++) {
+               FEdge tempfe = fes.elementAt(j);
+               Vector<ScheduleEdge> ses = fe2ses.get(tempfe);
+               ScheduleEdge tempse = ses.elementAt(0);
+               int temptime = tempse.getListExeTime();
+               // find out the ScheduleEdge with least exeTime
+               for(int k = 1; k < ses.size(); k++) {
+                 int ttemp = ses.elementAt(k).getListExeTime();
+                 if(ttemp < temptime) {
+                   tempse = ses.elementAt(k);
+                   temptime = ttemp;
+                 }
                }
-               if(0 == rate) {
-                   // clone the whole ScheduleNode lists starting with se's target
-                   for(int j = 1; j < repeat; j++ ) {
-                       cloneSNodeList(se, true);
-                   }
-                   se.setNewRate(1);
-                   se.setProbability(100);
-               } else {
-                   repeat -= rate;
-                   if(repeat > 0){
-                       // clone the whole ScheduleNode lists starting with se's target
-                       for(int j = 0; j < repeat; j++ ) {
-                           cloneSNodeList(se, true);
-                       }
-                       se.setNewRate(rate);
-                       se.setProbability(100);
-                   }
-               }
-               // merge the original ScheduleNode to the source ScheduleNode
-               ((ScheduleNode)se.getSource()).mergeSEdge(se);
-               scheduleNodes.remove(se.getTarget());
-               scheduleEdges.remove(se);
-               // As se has been changed into an internal edge inside a ScheduleNode, 
-               // change the source and target of se from original ScheduleNodes into ClassNodes.
-               if(se.getType() == ScheduleEdge.NEWEDGE) {
-                   se.setTarget(se.getTargetCNode());
-                   se.setSource(se.getSourceCNode());
-                   se.getTargetCNode().addEdge(se);
+               // handle the tempse
+               handleScheduleEdge(tempse, true);
+               ses.removeElement(tempse);
+               // handle other ScheduleEdges
+               for(int k = 0; k < ses.size(); k++) {
+                 handleScheduleEdge(ses.elementAt(k), false);
                }
+               ses = null;
+               fe2ses.remove(tempfe);
+             }
+             fes = null;
+           }
+
+           if((!(se.getTransTime() < this.transThreshold)) && (se.getSourceCNode().getTransTime() < se.getTransTime())) {
+             split = true;
+             splitSNode(se, true);
            } else {
-               // clone the whole ScheduleNode lists starting with se's target
-               for(int j = 1; j < repeat; j++ ) {
-                   cloneSNodeList(se, true);
-               }
-               se.setNewRate(1);
-               se.setProbability(100);
+             // handle this ScheduleEdge
+             handleScheduleEdge(se, true);
            }
-       } catch (Exception e) {
-           e.printStackTrace();
-           System.exit(-1);
+         }
        }
+      }
     }
-    
-    private void cloneSNodeList(ScheduleEdge sEdge, boolean copyIE) throws Exception {
-       Hashtable<ClassNode, ClassNode> cn2cn = new Hashtable<ClassNode, ClassNode>(); // hashtable from classnode in orignal se's targe to cloned one
-       ScheduleNode csNode = (ScheduleNode)((ScheduleNode)sEdge.getTarget()).clone(cn2cn, 0);
-       scheduleNodes.add(csNode);
-       
-       // Clone all the external in ScheduleEdges
-       int i;  
-       if(copyIE) {
-           Vector inedges = sEdge.getTarget().getInedgeVector();
-           for(i = 0; i < inedges.size(); i++) {
-               ScheduleEdge tse = (ScheduleEdge)inedges.elementAt(i);
-               ScheduleEdge se;
-               switch(tse.getType()) {
-               case ScheduleEdge.NEWEDGE: {
-                   se = new ScheduleEdge(csNode, "new", tse.getFstate(), tse.getType(), 0);
-                   se.setProbability(100);
-                   se.setNewRate(1);
-                   break;
-               }
-               case ScheduleEdge.TRANSEDGE: {
-                   se = new ScheduleEdge(csNode, "transmit", tse.getFstate(), tse.getType(), 0);
-                   se.setProbability(tse.getProbability());
-                   se.setNewRate(tse.getNewRate());
-                   break;
-               }
-               default: {
-                   throw new Exception("Error: not valid ScheduleEdge here");
-               }
-               }
-               se.setSourceCNode(tse.getSourceCNode());
-               se.setTargetCNode(cn2cn.get(tse.getTargetCNode()));
-               se.setFEdge(tse.getFEdge());
-               se.setTargetFState(tse.getTargetFState());
-               se.setIsclone(true);
-               tse.getSource().addEdge(se);
-               scheduleEdges.add(se);
-           }
-           inedges = null;
-       } else {
-           sEdge.getTarget().removeInedge(sEdge);
-           sEdge.setTarget(csNode);
-           csNode.getInedgeVector().add(sEdge);
-           sEdge.setTargetCNode(cn2cn.get(sEdge.getTargetCNode()));
-           sEdge.setIsclone(true);
+    if(!fe2ses.isEmpty()) {
+      Set<FEdge> keys = fe2ses.keySet();
+      Iterator it_keys = keys.iterator();
+      while(it_keys.hasNext()) {
+       FEdge tempfe = (FEdge)it_keys.next();
+       Vector<ScheduleEdge> ses = fe2ses.get(tempfe);
+       ScheduleEdge tempse = ses.elementAt(0);
+       int temptime = tempse.getListExeTime();
+       // find out the ScheduleEdge with least exeTime
+       for(int k = 1; k < ses.size(); k++) {
+         int ttemp = ses.elementAt(k).getListExeTime();
+         if(ttemp < temptime) {
+           tempse = ses.elementAt(k);
+           temptime = ttemp;
+         }
        }
-       
-       Queue<ScheduleNode> toClone = new LinkedList<ScheduleNode>(); // all nodes to be cloned
-       Queue<ScheduleNode> clone = new LinkedList<ScheduleNode>(); //clone nodes
-       Queue<Hashtable> qcn2cn = new LinkedList<Hashtable>(); // queue of the mappings of classnodes inside cloned ScheduleNode
-       Vector<ScheduleNode> origins = new Vector<ScheduleNode>(); // queue of source ScheduleNode cloned
-       Hashtable<ScheduleNode, ScheduleNode> sn2sn = new Hashtable<ScheduleNode, ScheduleNode>(); // mapping from cloned ScheduleNode to clone ScheduleNode
-       clone.add(csNode);
-       toClone.add((ScheduleNode)sEdge.getTarget());
-       origins.addElement((ScheduleNode)sEdge.getTarget());
-       sn2sn.put((ScheduleNode)sEdge.getTarget(), csNode);
-       qcn2cn.add(cn2cn);
-       while(!toClone.isEmpty()) {
-           Hashtable<ClassNode, ClassNode> tocn2cn = new Hashtable<ClassNode, ClassNode>();
-           csNode = clone.poll();
-           ScheduleNode osNode = toClone.poll();
-           cn2cn = qcn2cn.poll();
-           // Clone all the external ScheduleEdges and the following ScheduleNodes
-           Vector edges = osNode.getEdgeVector();
-           for(i = 0; i < edges.size(); i++) {
-               ScheduleEdge tse = (ScheduleEdge)edges.elementAt(i);
-               ScheduleNode tSNode = (ScheduleNode)((ScheduleNode)tse.getTarget()).clone(tocn2cn, 0);
-               scheduleNodes.add(tSNode);
-               clone.add(tSNode);
-               toClone.add((ScheduleNode)tse.getTarget());
-               origins.addElement((ScheduleNode)tse.getTarget());
-               sn2sn.put((ScheduleNode)tse.getTarget(), tSNode);
-               qcn2cn.add(tocn2cn);
-               ScheduleEdge se = null;
-               switch(tse.getType()) {
-               case ScheduleEdge.NEWEDGE: {
-                   se = new ScheduleEdge(tSNode, "new", tse.getFstate(), tse.getType(), 0);
-                   break;
-               }
-               case ScheduleEdge.TRANSEDGE: {
-                   se = new ScheduleEdge(tSNode, "transmit", tse.getFstate(), tse.getType(), 0);
-                   break;
-               }
-               default: {
-                   throw new Exception("Error: not valid ScheduleEdge here");
-               }
-               }
-               se.setSourceCNode(cn2cn.get(tse.getSourceCNode()));
-               se.setTargetCNode(tocn2cn.get(tse.getTargetCNode()));
-               se.setFEdge(tse.getFEdge());
-               se.setTargetFState(tse.getTargetFState());
-               se.setProbability(tse.getProbability());
-               se.setNewRate(tse.getNewRate());
-               se.setIsclone(true);
-               csNode.addEdge(se);
-               scheduleEdges.add(se);
-           }
-           tocn2cn = null;
-           edges = null;
-       }
-       
-       toClone = null;
-       clone = null;
-       qcn2cn = null;
-       cn2cn = null;
-    }
-    
-    private int calInExeTime(FlagState fs) throws Exception {
-       int exeTime = 0;
-       ClassDescriptor cd = fs.getClassDescriptor();
-       ClassNode cNode = cd2ClassNode.get(cd);
-       exeTime = cNode.getFlagStates().elementAt(0).getExeTime() - fs.getExeTime();
-       while(true) {
-           Vector inedges = cNode.getInedgeVector();
-           // Now that there are associate ScheduleEdges, there may be multiple inedges of a ClassNode
-           if(inedges.size() > 1) {
-               throw new Exception("Error: ClassNode's inedges more than one!");
-           }
-           if(inedges.size() > 0) {
-               ScheduleEdge sEdge = (ScheduleEdge)inedges.elementAt(0);
-               cNode = (ClassNode)sEdge.getSource();
-               exeTime += cNode.getFlagStates().elementAt(0).getExeTime();
-           }else {
-               break;
-           }
-           inedges = null;
-       }
-       exeTime = cNode.getScheduleNode().getExeTime() - exeTime;
-       return exeTime;
-    }
-    
-    private ScheduleNode splitSNode(ScheduleEdge se, boolean copy) {
-       assert(ScheduleEdge.NEWEDGE == se.getType());
-       
-       FEdge fe = se.getFEdge();
-       FlagState fs = (FlagState)fe.getTarget();
-       FlagState nfs = (FlagState)fs.clone();
-       fs.getEdgeVector().removeAllElements();
-       nfs.getInedgeVector().removeAllElements();
-       ClassNode sCNode = se.getSourceCNode();
-       
-       // split the subtree whose root is nfs from the whole flag transition tree
-       Vector<FlagState> sfss = sCNode.getFlagStates();
-       Vector<FlagState> fStates = new Vector<FlagState>();
-       Queue<FlagState> toiterate = new LinkedList<FlagState>();
-       toiterate.add(nfs);
-       fStates.add(nfs);
-       while(!toiterate.isEmpty()){
-           FlagState tfs = toiterate.poll();
-           Iterator it_edges = tfs.edges();
-           while(it_edges.hasNext()) {
-               FlagState temp = (FlagState)((FEdge)it_edges.next()).getTarget();
-               if(!fStates.contains(temp)) {
-                   fStates.add(temp);
-                   toiterate.add(temp);
-                   sfss.removeElement(temp);
-               }
-           }
+       // handle the tempse
+       handleScheduleEdge(tempse, true);
+       ses.removeElement(tempse);
+       // handle other ScheduleEdges
+       for(int k = 0; k < ses.size(); k++) {
+         handleScheduleEdge(ses.elementAt(k), false);
        }
-       sfss = null;
-       Vector<FlagState> sFStates = FlagState.DFS.topology(fStates, null);
-       fStates = null;
-       // create a ClassNode and ScheduleNode for this subtree
-       ClassNode cNode = new ClassNode(sCNode.getClassDescriptor(), sFStates);
-       ScheduleNode sNode = new ScheduleNode(cNode, 0);
-       cNode.setScheduleNode(sNode);
-       cNode.setSorted(true);
-       cNode.setTransTime(sCNode.getTransTime());
-       classNodes.add(cNode);
-       scheduleNodes.add(sNode);
+       ses = null;
+      }
+      keys = null;
+      fe2ses.clear();
+      sn2fes.clear();
+    }
+    fe2ses = null;
+    sn2fes = null;
+
+    SchedulingUtil.printScheduleGraph("scheduling_extend.dot", this.scheduleNodes);
+  }
+
+  private void handleScheduleEdge(ScheduleEdge se, boolean merge) {
+    try {
+      int rate = 0;
+      int repeat = (int)Math.ceil(se.getNewRate() * se.getProbability() / 100);
+      if(merge) {
        try {
-           sNode.calExeTime();
+         if(se.getListExeTime() == 0) {
+           rate = repeat;
+         } else {
+           rate = (int)Math.ceil((se.getTransTime() - calInExeTime(se.getSourceFState()))/ se.getListExeTime());
+         }
+         if(rate < 0 ) {
+           rate = 0;
+         }
        } catch (Exception e) {
-           e.printStackTrace();
+         e.printStackTrace();
        }
-       // flush the exeTime of fs and its ancestors
-       fs.setExeTime(0);
-       toiterate.add(fs);
-       while(!toiterate.isEmpty()) {
-           FlagState tfs = toiterate.poll();
-           int ttime = tfs.getExeTime();
-           Iterator it_inedges = tfs.inedges();
-           while(it_inedges.hasNext()) {
-               FEdge fEdge = (FEdge)it_inedges.next();
-               FlagState temp = (FlagState)fEdge.getSource();
-               int time = fEdge.getExeTime() + ttime;
-               if(temp.getExeTime() > time) {
-                   temp.setExeTime(time);
-                   toiterate.add(temp);
-               }
+       if(0 == rate) {
+         // clone the whole ScheduleNode lists starting with se's target
+         for(int j = 1; j < repeat; j++ ) {
+           cloneSNodeList(se, true);
+         }
+         se.setNewRate(1);
+         se.setProbability(100);
+       } else {
+         repeat -= rate;
+         if(repeat > 0){
+           // clone the whole ScheduleNode lists starting with se's target
+           for(int j = 0; j < repeat; j++ ) {
+             cloneSNodeList(se, true);
            }
+           se.setNewRate(rate);
+           se.setProbability(100);
+         }
        }
-       toiterate = null;
-       
-       // create a 'trans' ScheudleEdge between this new ScheduleNode and se's source ScheduleNode
-       ScheduleEdge sEdge = new ScheduleEdge(sNode, "transmit", fs, ScheduleEdge.TRANSEDGE, 0);//new ScheduleEdge(sNode, "transmit", cNode.getClassDescriptor(), false, 0);
-       sEdge.setFEdge(fe);
-       sEdge.setSourceCNode(sCNode);
-       sEdge.setTargetCNode(cNode);
-       sEdge.setTargetFState(nfs);
-       // TODO
-       // Add calculation codes for calculating transmit time of an object 
-       sEdge.setTransTime(cNode.getTransTime());
-       se.getSource().addEdge(sEdge);
-       scheduleEdges.add(sEdge);
-       // remove the ClassNodes and internal ScheduleEdges out of this subtree to the new ScheduleNode
-       ScheduleNode oldSNode = (ScheduleNode)se.getSource();
-       Iterator it_isEdges = oldSNode.getScheduleEdgesIterator();
-       Vector<ScheduleEdge> toremove = new Vector<ScheduleEdge>();
-       Vector<ClassNode> rCNodes = new Vector<ClassNode>();
-       rCNodes.addElement(sCNode);
-       if(it_isEdges != null){
-           while(it_isEdges.hasNext()) {
-               ScheduleEdge tse = (ScheduleEdge)it_isEdges.next();
-               if(rCNodes.contains(tse.getSourceCNode())) {
-                   if(sCNode == tse.getSourceCNode()) {
-                       if ((tse.getSourceFState() != fs) && (sFStates.contains(tse.getSourceFState()))) {
-                           tse.setSource(cNode);
-                           tse.setSourceCNode(cNode);
-                       } else {
-                           continue;
-                       }
-                   }
-                   sNode.getScheduleEdges().addElement(tse);
-                   sNode.getClassNodes().addElement(tse.getTargetCNode());
-                   rCNodes.addElement(tse.getTargetCNode());
-                   oldSNode.getClassNodes().removeElement(tse.getTargetCNode());
-                   toremove.addElement(tse);
-               }
-           }
+       // merge the original ScheduleNode to the source ScheduleNode
+       ((ScheduleNode)se.getSource()).mergeSEdge(se);
+       scheduleNodes.remove(se.getTarget());
+       scheduleEdges.remove(se);
+       // As se has been changed into an internal edge inside a ScheduleNode,
+       // change the source and target of se from original ScheduleNodes into ClassNodes.
+       if(se.getType() == ScheduleEdge.NEWEDGE) {
+         se.setTarget(se.getTargetCNode());
+         se.setSource(se.getSourceCNode());
+         se.getTargetCNode().addEdge(se);
        }
-       oldSNode.getScheduleEdges().removeAll(toremove);
-       toremove.clear();
-       // redirect ScheudleEdges out of this subtree to the new ScheduleNode
-       Iterator it_sEdges = se.getSource().edges();
-       while(it_sEdges.hasNext()) {
-           ScheduleEdge tse = (ScheduleEdge)it_sEdges.next();
-           if((tse != se) && (tse != sEdge) && (tse.getSourceCNode() == sCNode)) {
-               if((tse.getSourceFState() != fs) && (sFStates.contains(tse.getSourceFState()))) {
-                   tse.setSource(sNode);
-                   tse.setSourceCNode(cNode);
-                   sNode.getEdgeVector().addElement(tse);
-                   toremove.add(tse);
-               }
-           }
+      } else {
+       // clone the whole ScheduleNode lists starting with se's target
+       for(int j = 1; j < repeat; j++ ) {
+         cloneSNodeList(se, true);
        }
-       se.getSource().getEdgeVector().removeAll(toremove);
-       toremove = null;
-       sFStates = null;
-       
-       try {
-           if(!copy) {
-               //merge se into its source ScheduleNode
-               ((ScheduleNode)se.getSource()).mergeSEdge(se);
-               scheduleNodes.remove(se.getTarget());
-               scheduleEdges.removeElement(se);
-               // As se has been changed into an internal edge inside a ScheduleNode, 
-               // change the source and target of se from original ScheduleNodes into ClassNodes.
-               if(se.getType() == ScheduleEdge.NEWEDGE) {
-                   se.setTarget(se.getTargetCNode());
-                   se.setSource(se.getSourceCNode());
-                   se.getTargetCNode().addEdge(se);
-               }
+       se.setNewRate(1);
+       se.setProbability(100);
+      }
+    } catch (Exception e) {
+      e.printStackTrace();
+      System.exit(-1);
+    }
+  }
+
+  private void cloneSNodeList(ScheduleEdge sEdge, boolean copyIE) throws Exception {
+    Hashtable<ClassNode, ClassNode> cn2cn = new Hashtable<ClassNode, ClassNode>();     // hashtable from classnode in orignal se's targe to cloned one
+    ScheduleNode csNode = (ScheduleNode)((ScheduleNode)sEdge.getTarget()).clone(cn2cn, 0);
+    scheduleNodes.add(csNode);
+
+    // Clone all the external in ScheduleEdges
+    int i;
+    if(copyIE) {
+      Vector inedges = sEdge.getTarget().getInedgeVector();
+      for(i = 0; i < inedges.size(); i++) {
+       ScheduleEdge tse = (ScheduleEdge)inedges.elementAt(i);
+       ScheduleEdge se;
+       switch(tse.getType()) {
+       case ScheduleEdge.NEWEDGE: {
+         se = new ScheduleEdge(csNode, "new", tse.getFstate(), tse.getType(), 0);
+         se.setProbability(100);
+         se.setNewRate(1);
+         break;
+       }
+
+       case ScheduleEdge.TRANSEDGE: {
+         se = new ScheduleEdge(csNode, "transmit", tse.getFstate(), tse.getType(), 0);
+         se.setProbability(tse.getProbability());
+         se.setNewRate(tse.getNewRate());
+         break;
+       }
+
+       default: {
+         throw new Exception("Error: not valid ScheduleEdge here");
+       }
+       }
+       se.setSourceCNode(tse.getSourceCNode());
+       se.setTargetCNode(cn2cn.get(tse.getTargetCNode()));
+       se.setFEdge(tse.getFEdge());
+       se.setTargetFState(tse.getTargetFState());
+       se.setIsclone(true);
+       tse.getSource().addEdge(se);
+       scheduleEdges.add(se);
+      }
+      inedges = null;
+    } else {
+      sEdge.getTarget().removeInedge(sEdge);
+      sEdge.setTarget(csNode);
+      csNode.getInedgeVector().add(sEdge);
+      sEdge.setTargetCNode(cn2cn.get(sEdge.getTargetCNode()));
+      sEdge.setIsclone(true);
+    }
+
+    Queue<ScheduleNode> toClone = new LinkedList<ScheduleNode>();     // all nodes to be cloned
+    Queue<ScheduleNode> clone = new LinkedList<ScheduleNode>();     //clone nodes
+    Queue<Hashtable> qcn2cn = new LinkedList<Hashtable>();     // queue of the mappings of classnodes inside cloned ScheduleNode
+    Vector<ScheduleNode> origins = new Vector<ScheduleNode>();     // queue of source ScheduleNode cloned
+    Hashtable<ScheduleNode, ScheduleNode> sn2sn = new Hashtable<ScheduleNode, ScheduleNode>();     // mapping from cloned ScheduleNode to clone ScheduleNode
+    clone.add(csNode);
+    toClone.add((ScheduleNode)sEdge.getTarget());
+    origins.addElement((ScheduleNode)sEdge.getTarget());
+    sn2sn.put((ScheduleNode)sEdge.getTarget(), csNode);
+    qcn2cn.add(cn2cn);
+    while(!toClone.isEmpty()) {
+      Hashtable<ClassNode, ClassNode> tocn2cn = new Hashtable<ClassNode, ClassNode>();
+      csNode = clone.poll();
+      ScheduleNode osNode = toClone.poll();
+      cn2cn = qcn2cn.poll();
+      // Clone all the external ScheduleEdges and the following ScheduleNodes
+      Vector edges = osNode.getEdgeVector();
+      for(i = 0; i < edges.size(); i++) {
+       ScheduleEdge tse = (ScheduleEdge)edges.elementAt(i);
+       ScheduleNode tSNode = (ScheduleNode)((ScheduleNode)tse.getTarget()).clone(tocn2cn, 0);
+       scheduleNodes.add(tSNode);
+       clone.add(tSNode);
+       toClone.add((ScheduleNode)tse.getTarget());
+       origins.addElement((ScheduleNode)tse.getTarget());
+       sn2sn.put((ScheduleNode)tse.getTarget(), tSNode);
+       qcn2cn.add(tocn2cn);
+       ScheduleEdge se = null;
+       switch(tse.getType()) {
+       case ScheduleEdge.NEWEDGE: {
+         se = new ScheduleEdge(tSNode, "new", tse.getFstate(), tse.getType(), 0);
+         break;
+       }
+
+       case ScheduleEdge.TRANSEDGE: {
+         se = new ScheduleEdge(tSNode, "transmit", tse.getFstate(), tse.getType(), 0);
+         break;
+       }
+
+       default: {
+         throw new Exception("Error: not valid ScheduleEdge here");
+       }
+       }
+       se.setSourceCNode(cn2cn.get(tse.getSourceCNode()));
+       se.setTargetCNode(tocn2cn.get(tse.getTargetCNode()));
+       se.setFEdge(tse.getFEdge());
+       se.setTargetFState(tse.getTargetFState());
+       se.setProbability(tse.getProbability());
+       se.setNewRate(tse.getNewRate());
+       se.setIsclone(true);
+       csNode.addEdge(se);
+       scheduleEdges.add(se);
+      }
+      tocn2cn = null;
+      edges = null;
+    }
+
+    toClone = null;
+    clone = null;
+    qcn2cn = null;
+    cn2cn = null;
+  }
+
+  private int calInExeTime(FlagState fs) throws Exception {
+    int exeTime = 0;
+    ClassDescriptor cd = fs.getClassDescriptor();
+    ClassNode cNode = cd2ClassNode.get(cd);
+    exeTime = cNode.getFlagStates().elementAt(0).getExeTime() - fs.getExeTime();
+    while(true) {
+      Vector inedges = cNode.getInedgeVector();
+      // Now that there are associate ScheduleEdges, there may be multiple inedges of a ClassNode
+      if(inedges.size() > 1) {
+       throw new Exception("Error: ClassNode's inedges more than one!");
+      }
+      if(inedges.size() > 0) {
+       ScheduleEdge sEdge = (ScheduleEdge)inedges.elementAt(0);
+       cNode = (ClassNode)sEdge.getSource();
+       exeTime += cNode.getFlagStates().elementAt(0).getExeTime();
+      } else {
+       break;
+      }
+      inedges = null;
+    }
+    exeTime = cNode.getScheduleNode().getExeTime() - exeTime;
+    return exeTime;
+  }
+
+  private ScheduleNode splitSNode(ScheduleEdge se, boolean copy) {
+    assert(ScheduleEdge.NEWEDGE == se.getType());
+
+    FEdge fe = se.getFEdge();
+    FlagState fs = (FlagState)fe.getTarget();
+    FlagState nfs = (FlagState)fs.clone();
+    fs.getEdgeVector().removeAllElements();
+    nfs.getInedgeVector().removeAllElements();
+    ClassNode sCNode = se.getSourceCNode();
+
+    // split the subtree whose root is nfs from the whole flag transition tree
+    Vector<FlagState> sfss = sCNode.getFlagStates();
+    Vector<FlagState> fStates = new Vector<FlagState>();
+    Queue<FlagState> toiterate = new LinkedList<FlagState>();
+    toiterate.add(nfs);
+    fStates.add(nfs);
+    while(!toiterate.isEmpty()){
+      FlagState tfs = toiterate.poll();
+      Iterator it_edges = tfs.edges();
+      while(it_edges.hasNext()) {
+       FlagState temp = (FlagState)((FEdge)it_edges.next()).getTarget();
+       if(!fStates.contains(temp)) {
+         fStates.add(temp);
+         toiterate.add(temp);
+         sfss.removeElement(temp);
+       }
+      }
+    }
+    sfss = null;
+    Vector<FlagState> sFStates = FlagState.DFS.topology(fStates, null);
+    fStates = null;
+    // create a ClassNode and ScheduleNode for this subtree
+    ClassNode cNode = new ClassNode(sCNode.getClassDescriptor(), sFStates);
+    ScheduleNode sNode = new ScheduleNode(cNode, 0);
+    cNode.setScheduleNode(sNode);
+    cNode.setSorted(true);
+    cNode.setTransTime(sCNode.getTransTime());
+    classNodes.add(cNode);
+    scheduleNodes.add(sNode);
+    try {
+      sNode.calExeTime();
+    } catch (Exception e) {
+      e.printStackTrace();
+    }
+    // flush the exeTime of fs and its ancestors
+    fs.setExeTime(0);
+    toiterate.add(fs);
+    while(!toiterate.isEmpty()) {
+      FlagState tfs = toiterate.poll();
+      int ttime = tfs.getExeTime();
+      Iterator it_inedges = tfs.inedges();
+      while(it_inedges.hasNext()) {
+       FEdge fEdge = (FEdge)it_inedges.next();
+       FlagState temp = (FlagState)fEdge.getSource();
+       int time = fEdge.getExeTime() + ttime;
+       if(temp.getExeTime() > time) {
+         temp.setExeTime(time);
+         toiterate.add(temp);
+       }
+      }
+    }
+    toiterate = null;
+
+    // create a 'trans' ScheudleEdge between this new ScheduleNode and se's source ScheduleNode
+    ScheduleEdge sEdge = new ScheduleEdge(sNode, "transmit", fs, ScheduleEdge.TRANSEDGE, 0);   //new ScheduleEdge(sNode, "transmit", cNode.getClassDescriptor(), false, 0);
+    sEdge.setFEdge(fe);
+    sEdge.setSourceCNode(sCNode);
+    sEdge.setTargetCNode(cNode);
+    sEdge.setTargetFState(nfs);
+    // TODO
+    // Add calculation codes for calculating transmit time of an object
+    sEdge.setTransTime(cNode.getTransTime());
+    se.getSource().addEdge(sEdge);
+    scheduleEdges.add(sEdge);
+    // remove the ClassNodes and internal ScheduleEdges out of this subtree to the new ScheduleNode
+    ScheduleNode oldSNode = (ScheduleNode)se.getSource();
+    Iterator it_isEdges = oldSNode.getScheduleEdgesIterator();
+    Vector<ScheduleEdge> toremove = new Vector<ScheduleEdge>();
+    Vector<ClassNode> rCNodes = new Vector<ClassNode>();
+    rCNodes.addElement(sCNode);
+    if(it_isEdges != null){
+      while(it_isEdges.hasNext()) {
+       ScheduleEdge tse = (ScheduleEdge)it_isEdges.next();
+       if(rCNodes.contains(tse.getSourceCNode())) {
+         if(sCNode == tse.getSourceCNode()) {
+           if ((tse.getSourceFState() != fs) && (sFStates.contains(tse.getSourceFState()))) {
+             tse.setSource(cNode);
+             tse.setSourceCNode(cNode);
            } else {
-               handleScheduleEdge(se, true);
+             continue;
            }
-       } catch (Exception e) {
-           e.printStackTrace();
-           System.exit(-1);
+         }
+         sNode.getScheduleEdges().addElement(tse);
+         sNode.getClassNodes().addElement(tse.getTargetCNode());
+         rCNodes.addElement(tse.getTargetCNode());
+         oldSNode.getClassNodes().removeElement(tse.getTargetCNode());
+         toremove.addElement(tse);
        }
-       
-       return sNode;
+      }
     }
-    
-    public void schedule() throws Exception {
-       if(this.coreNum == -1) {
-           throw new Exception("Error: un-initialized coreNum when doing scheduling.");
+    oldSNode.getScheduleEdges().removeAll(toremove);
+    toremove.clear();
+    // redirect ScheudleEdges out of this subtree to the new ScheduleNode
+    Iterator it_sEdges = se.getSource().edges();
+    while(it_sEdges.hasNext()) {
+      ScheduleEdge tse = (ScheduleEdge)it_sEdges.next();
+      if((tse != se) && (tse != sEdge) && (tse.getSourceCNode() == sCNode)) {
+       if((tse.getSourceFState() != fs) && (sFStates.contains(tse.getSourceFState()))) {
+         tse.setSource(sNode);
+         tse.setSourceCNode(cNode);
+         sNode.getEdgeVector().addElement(tse);
+         toremove.add(tse);
        }
-       
-       if(this.scheduleGraphs == null) {
-           this.scheduleGraphs = new Vector<Vector<ScheduleNode>>();
+      }
+    }
+    se.getSource().getEdgeVector().removeAll(toremove);
+    toremove = null;
+    sFStates = null;
+
+    try {
+      if(!copy) {
+       //merge se into its source ScheduleNode
+       ((ScheduleNode)se.getSource()).mergeSEdge(se);
+       scheduleNodes.remove(se.getTarget());
+       scheduleEdges.removeElement(se);
+       // As se has been changed into an internal edge inside a ScheduleNode,
+       // change the source and target of se from original ScheduleNodes into ClassNodes.
+       if(se.getType() == ScheduleEdge.NEWEDGE) {
+         se.setTarget(se.getTargetCNode());
+         se.setSource(se.getSourceCNode());
+         se.getTargetCNode().addEdge(se);
        }
-       
-       int reduceNum = this.scheduleNodes.size() - this.coreNum;
-       
-       // Combine some ScheduleNode if necessary
-       // May generate multiple graphs suggesting candidate schedulings
-       if(!(reduceNum > 0)) {
-           // Enough cores, no need to combine any ScheduleNode
-           this.scheduleGraphs.addElement(this.scheduleNodes);
-           int gid = 1;
-           String path = "scheduling_" + gid + ".dot";
-           SchedulingUtil.printScheduleGraph(path, this.scheduleNodes);
-       } else {
-           // Go through all the Scheudle Nodes, organize them in order of their cid
-           Vector<Vector<ScheduleNode>> sNodeVecs = new Vector<Vector<ScheduleNode>>();
-           for(int i = 0; i < this.scheduleNodes.size(); i++) {
-               ScheduleNode tmpn = this.scheduleNodes.elementAt(i);
-               int index = tmpn.getCid();
-               while(sNodeVecs.size() <= index) {
-                   sNodeVecs.add(null);
-               }
-               if(sNodeVecs.elementAt(index) == null) {
-                   sNodeVecs.setElementAt(new Vector<ScheduleNode>(), index);
-               }
-               sNodeVecs.elementAt(index).add(tmpn);
-           }
-           
-           CombinationUtil.RootsGenerator rGen = CombinationUtil.allocateRootsGenerator(sNodeVecs, this.coreNum);
-           
-           int gid = 1;
-           while(rGen.nextGen()) {
-               // first get the chosen rootNodes
-               Vector<Vector<ScheduleNode>> rootNodes = rGen.getRootNodes();
-               Vector<Vector<ScheduleNode>> nodes2combine = rGen.getNode2Combine();
-               
-               CombinationUtil.CombineGenerator cGen = CombinationUtil.allocateCombineGenerator(rootNodes, nodes2combine);
-               while (cGen.nextGen()) {
-                   Vector<Vector<CombinationUtil.Combine>> combine = cGen.getCombine();
-                   Vector<ScheduleNode> sNodes = generateScheduling(rootNodes, combine, gid++);
-                   this.scheduleGraphs.add(sNodes);
-                   combine = null;
-                   sNodes = null;
-               }
-               rootNodes = null;
-               nodes2combine = null;
-           }
-           sNodeVecs = null;
+      } else {
+       handleScheduleEdge(se, true);
+      }
+    } catch (Exception e) {
+      e.printStackTrace();
+      System.exit(-1);
+    }
+
+    return sNode;
+  }
+
+  public void schedule() throws Exception {
+    if(this.coreNum == -1) {
+      throw new Exception("Error: un-initialized coreNum when doing scheduling.");
+    }
+
+    if(this.scheduleGraphs == null) {
+      this.scheduleGraphs = new Vector<Vector<ScheduleNode>>();
+    }
+
+    int reduceNum = this.scheduleNodes.size() - this.coreNum;
+
+    // Combine some ScheduleNode if necessary
+    // May generate multiple graphs suggesting candidate schedulings
+    if(!(reduceNum > 0)) {
+      // Enough cores, no need to combine any ScheduleNode
+      this.scheduleGraphs.addElement(this.scheduleNodes);
+      int gid = 1;
+      String path = "scheduling_" + gid + ".dot";
+      SchedulingUtil.printScheduleGraph(path, this.scheduleNodes);
+    } else {
+      // Go through all the Scheudle Nodes, organize them in order of their cid
+      Vector<Vector<ScheduleNode>> sNodeVecs = new Vector<Vector<ScheduleNode>>();
+      for(int i = 0; i < this.scheduleNodes.size(); i++) {
+       ScheduleNode tmpn = this.scheduleNodes.elementAt(i);
+       int index = tmpn.getCid();
+       while(sNodeVecs.size() <= index) {
+         sNodeVecs.add(null);
        }
-       
-       // Generate schedulings according to result schedule graph
-       if(this.schedulings == null) {
-           this.schedulings = new Vector<Vector<Schedule>>();
+       if(sNodeVecs.elementAt(index) == null) {
+         sNodeVecs.setElementAt(new Vector<ScheduleNode>(), index);
        }
-       
-       Vector<TaskDescriptor> multiparamtds = new Vector<TaskDescriptor>();
-       Iterator it_tasks = state.getTaskSymbolTable().getDescriptorsIterator();
-       while(it_tasks.hasNext()) {
-           TaskDescriptor td = (TaskDescriptor)it_tasks.next();
-           if(td.numParameters() > 1) {
-               multiparamtds.addElement(td);
+       sNodeVecs.elementAt(index).add(tmpn);
+      }
+
+      CombinationUtil.RootsGenerator rGen = CombinationUtil.allocateRootsGenerator(sNodeVecs, this.coreNum);
+
+      int gid = 1;
+      while(rGen.nextGen()) {
+       // first get the chosen rootNodes
+       Vector<Vector<ScheduleNode>> rootNodes = rGen.getRootNodes();
+       Vector<Vector<ScheduleNode>> nodes2combine = rGen.getNode2Combine();
+
+       CombinationUtil.CombineGenerator cGen = CombinationUtil.allocateCombineGenerator(rootNodes, nodes2combine);
+       while (cGen.nextGen()) {
+         Vector<Vector<CombinationUtil.Combine>> combine = cGen.getCombine();
+         Vector<ScheduleNode> sNodes = generateScheduling(rootNodes, combine, gid++);
+         this.scheduleGraphs.add(sNodes);
+         combine = null;
+         sNodes = null;
+       }
+       rootNodes = null;
+       nodes2combine = null;
+      }
+      sNodeVecs = null;
+    }
+
+    // Generate schedulings according to result schedule graph
+    if(this.schedulings == null) {
+      this.schedulings = new Vector<Vector<Schedule>>();
+    }
+
+    Vector<TaskDescriptor> multiparamtds = new Vector<TaskDescriptor>();
+    Iterator it_tasks = state.getTaskSymbolTable().getDescriptorsIterator();
+    while(it_tasks.hasNext()) {
+      TaskDescriptor td = (TaskDescriptor)it_tasks.next();
+      if(td.numParameters() > 1) {
+       multiparamtds.addElement(td);
+      }
+    }
+
+    for(int i = 0; i < this.scheduleGraphs.size(); i++) {
+      Hashtable<TaskDescriptor, Vector<Schedule>> td2cores = new Hashtable<TaskDescriptor, Vector<Schedule>>();       // multiparam tasks reside on which cores
+      Vector<ScheduleNode> scheduleGraph = this.scheduleGraphs.elementAt(i);
+      Vector<Schedule> scheduling = new Vector<Schedule>(scheduleGraph.size());
+      // for each ScheduleNode create a schedule node representing a core
+      Hashtable<ScheduleNode, Integer> sn2coreNum = new Hashtable<ScheduleNode, Integer>();
+      int j = 0;
+      for(j = 0; j < scheduleGraph.size(); j++) {
+       sn2coreNum.put(scheduleGraph.elementAt(j), j);
+      }
+      int startupcore = 0;
+      boolean setstartupcore = false;
+      Schedule startup = null;
+      for(j = 0; j < scheduleGraph.size(); j++) {
+       Schedule tmpSchedule = new Schedule(j);
+       ScheduleNode sn = scheduleGraph.elementAt(j);
+
+       Vector<ClassNode> cNodes = sn.getClassNodes();
+       for(int k = 0; k < cNodes.size(); k++) {
+         Iterator it_flags = cNodes.elementAt(k).getFlags();
+         while(it_flags.hasNext()) {
+           FlagState fs = (FlagState)it_flags.next();
+           Iterator it_edges = fs.edges();
+           while(it_edges.hasNext()) {
+             TaskDescriptor td = ((FEdge)it_edges.next()).getTask();
+             tmpSchedule.addTask(td);
+             if(!td2cores.containsKey(td)) {
+               td2cores.put(td, new Vector<Schedule>());
+             }
+             Vector<Schedule> tmpcores = td2cores.get(td);
+             if(!tmpcores.contains(tmpSchedule)) {
+               tmpcores.add(tmpSchedule);
+             }
+             // if the FlagState can be fed to some multi-param tasks,
+             // need to record corresponding ally cores later
+             if(td.numParameters() > 1) {
+               tmpSchedule.addFState4TD(td, fs);
+             }
+             if(td.getParamType(0).getClassDesc().getSymbol().equals(TypeUtil.StartupClass)) {
+               assert(!setstartupcore);
+               startupcore = j;
+               startup = tmpSchedule;
+               setstartupcore = true;
+             }
            }
+         }
        }
-       
-       for(int i = 0; i < this.scheduleGraphs.size(); i++) {
-           Hashtable<TaskDescriptor, Vector<Schedule>> td2cores = new Hashtable<TaskDescriptor, Vector<Schedule>>(); // multiparam tasks reside on which cores
-           Vector<ScheduleNode> scheduleGraph = this.scheduleGraphs.elementAt(i);
-           Vector<Schedule> scheduling = new Vector<Schedule>(scheduleGraph.size());
-           // for each ScheduleNode create a schedule node representing a core
-           Hashtable<ScheduleNode, Integer> sn2coreNum = new Hashtable<ScheduleNode, Integer>();
-           int j = 0;
-           for(j = 0; j < scheduleGraph.size(); j++) {
-               sn2coreNum.put(scheduleGraph.elementAt(j), j);
+
+       // For each of the ScheduleEdge out of this ScheduleNode, add the target ScheduleNode into the queue inside sn
+       Iterator it_edges = sn.edges();
+       while(it_edges.hasNext()) {
+         ScheduleEdge se = (ScheduleEdge)it_edges.next();
+         ScheduleNode target = (ScheduleNode)se.getTarget();
+         Integer targetcore = sn2coreNum.get(target);
+         switch(se.getType()) {
+         case ScheduleEdge.NEWEDGE: {
+           for(int k = 0; k < se.getNewRate(); k++) {
+             tmpSchedule.addTargetCore(se.getFstate(), targetcore);
            }
-           int startupcore = 0;
-           boolean setstartupcore = false;
-           Schedule startup = null;
-           for(j = 0; j < scheduleGraph.size(); j++) {
-               Schedule tmpSchedule = new Schedule(j);
-               ScheduleNode sn = scheduleGraph.elementAt(j);
-               
-               Vector<ClassNode> cNodes = sn.getClassNodes();
-               for(int k = 0; k < cNodes.size(); k++) {
-                   Iterator it_flags = cNodes.elementAt(k).getFlags();
-                   while(it_flags.hasNext()) {
-                       FlagState fs = (FlagState)it_flags.next();
-                       Iterator it_edges = fs.edges();
-                       while(it_edges.hasNext()) {
-                           TaskDescriptor td = ((FEdge)it_edges.next()).getTask();
-                           tmpSchedule.addTask(td);
-                           if(!td2cores.containsKey(td)) {
-                               td2cores.put(td, new Vector<Schedule>());
-                           }
-                           Vector<Schedule> tmpcores = td2cores.get(td);
-                           if(!tmpcores.contains(tmpSchedule)) {
-                               tmpcores.add(tmpSchedule);
-                           }
-                           // if the FlagState can be fed to some multi-param tasks,
-                           // need to record corresponding ally cores later
-                           if(td.numParameters() > 1) {
-                               tmpSchedule.addFState4TD(td, fs);
-                           }
-                           if(td.getParamType(0).getClassDesc().getSymbol().equals(TypeUtil.StartupClass)) {
-                               assert(!setstartupcore);
-                               startupcore = j;
-                               startup = tmpSchedule;
-                               setstartupcore = true;
-                           }
-                       }
-                   }
-               }
+           break;
+         }
 
-               // For each of the ScheduleEdge out of this ScheduleNode, add the target ScheduleNode into the queue inside sn
-               Iterator it_edges = sn.edges();
-               while(it_edges.hasNext()) {
-                   ScheduleEdge se = (ScheduleEdge)it_edges.next();
-                   ScheduleNode target = (ScheduleNode)se.getTarget();
-                   Integer targetcore = sn2coreNum.get(target);
-                   switch(se.getType()) {
-                   case ScheduleEdge.NEWEDGE: {
-                       for(int k = 0; k < se.getNewRate(); k++) {
-                           tmpSchedule.addTargetCore(se.getFstate(), targetcore);
-                       }
-                       break;
-                   }
-                   case ScheduleEdge.TRANSEDGE: {
-                       // 'transmit' edge
-                       tmpSchedule.addTargetCore(se.getFstate(), targetcore, se.getTargetFState());
-                       // check if missed some FlagState associated with some multi-parameter 
-                       // task, which has been cloned when splitting a ClassNode
-                       FlagState fs = se.getSourceFState();
-                       FlagState tfs = se.getTargetFState();
-                       Iterator it = tfs.edges();
-                       while(it.hasNext()) {
-                           TaskDescriptor td = ((FEdge)it.next()).getTask();
-                           if(td.numParameters() > 1) {
-                               if(tmpSchedule.getTasks().contains(td)) {
-                                   tmpSchedule.addFState4TD(td, fs);
-                               }
-                           }
-                       }
-                       break;
-                   }
-                   }
+         case ScheduleEdge.TRANSEDGE: {
+           // 'transmit' edge
+           tmpSchedule.addTargetCore(se.getFstate(), targetcore, se.getTargetFState());
+           // check if missed some FlagState associated with some multi-parameter
+           // task, which has been cloned when splitting a ClassNode
+           FlagState fs = se.getSourceFState();
+           FlagState tfs = se.getTargetFState();
+           Iterator it = tfs.edges();
+           while(it.hasNext()) {
+             TaskDescriptor td = ((FEdge)it.next()).getTask();
+             if(td.numParameters() > 1) {
+               if(tmpSchedule.getTasks().contains(td)) {
+                 tmpSchedule.addFState4TD(td, fs);
                }
-               it_edges = sn.getScheduleEdgesIterator();
+             }
+           }
+           break;
+         }
+         }
+       }
+       it_edges = sn.getScheduleEdgesIterator();
+       while(it_edges.hasNext()) {
+         ScheduleEdge se = (ScheduleEdge)it_edges.next();
+         switch(se.getType()) {
+         case ScheduleEdge.NEWEDGE: {
+           for(int k = 0; k < se.getNewRate(); k++) {
+             tmpSchedule.addTargetCore(se.getFstate(), j);
+           }
+           break;
+         }
+
+         case ScheduleEdge.TRANSEDGE: {
+           // 'transmit' edge
+           tmpSchedule.addTargetCore(se.getFstate(), j, se.getTargetFState());
+           break;
+         }
+         }
+       }
+       scheduling.add(tmpSchedule);
+      }
+
+      int number = this.coreNum;
+      if(scheduling.size() < number) {
+       number = scheduling.size();
+      }
+
+      // set up all the associate ally cores
+      if(multiparamtds.size() > 0) {
+       for(j = 0; j < multiparamtds.size(); ++j) {
+         TaskDescriptor td = multiparamtds.elementAt(j);
+         Vector<FEdge> fes = (Vector<FEdge>) this.taskanalysis.getFEdgesFromTD(td);
+         Vector<Schedule> cores = td2cores.get(td);
+         for(int k = 0; k < cores.size(); ++k) {
+           Schedule tmpSchedule = cores.elementAt(k);
+
+           for(int h = 0; h < fes.size(); ++h) {
+             FEdge tmpfe = fes.elementAt(h);
+             FlagState tmpfs = (FlagState)tmpfe.getTarget();
+             Vector<TaskDescriptor> tmptds = new Vector<TaskDescriptor>();
+             if((tmpSchedule.getTargetCoreTable() == null) || (!tmpSchedule.getTargetCoreTable().contains(tmpfs))) {
+               // add up all possible cores' info
+               Iterator it_edges = tmpfs.edges();
                while(it_edges.hasNext()) {
-                   ScheduleEdge se = (ScheduleEdge)it_edges.next();
-                   switch(se.getType()) {
-                   case ScheduleEdge.NEWEDGE: {
-                       for(int k = 0; k < se.getNewRate(); k++) {
-                           tmpSchedule.addTargetCore(se.getFstate(), j);
+                 TaskDescriptor tmptd = ((FEdge)it_edges.next()).getTask();
+                 if(!tmptds.contains(tmptd)) {
+                   tmptds.add(tmptd);
+                   Vector<Schedule> tmpcores = td2cores.get(tmptd);
+                   for(int m = 0; m < tmpcores.size(); ++m) {
+                     if(m != tmpSchedule.getCoreNum()) {
+                       // if the FlagState can be fed to some multi-param tasks,
+                       // need to record corresponding ally cores later
+                       if(tmptd.numParameters() > 1) {
+                         tmpSchedule.addAllyCore(tmpfs, tmpcores.elementAt(m).getCoreNum());
+                       } else {
+                         tmpSchedule.addTargetCore(tmpfs, tmpcores.elementAt(m).getCoreNum());
                        }
-                       break;
-                   }
-                   case ScheduleEdge.TRANSEDGE: {
-                       // 'transmit' edge
-                       tmpSchedule.addTargetCore(se.getFstate(), j, se.getTargetFState());
-                       break;
-                   }
+                     }
                    }
+                 }
                }
-               scheduling.add(tmpSchedule);
-           }       
-
-           int number = this.coreNum;
-           if(scheduling.size() < number) {
-               number = scheduling.size();
+             }
            }
-           
-           // set up all the associate ally cores
-           if(multiparamtds.size() > 0) {      
-               for(j = 0; j < multiparamtds.size(); ++j) {
-                   TaskDescriptor td = multiparamtds.elementAt(j);
-                   Vector<FEdge> fes = (Vector<FEdge>)this.taskanalysis.getFEdgesFromTD(td);
-                   Vector<Schedule> cores = td2cores.get(td);
-                   for(int k = 0; k < cores.size(); ++k) {
-                       Schedule tmpSchedule = cores.elementAt(k);
-                       
-                       for(int h = 0; h < fes.size(); ++h) {
-                           FEdge tmpfe = fes.elementAt(h);
-                           FlagState tmpfs = (FlagState)tmpfe.getTarget();
-                           Vector<TaskDescriptor> tmptds = new Vector<TaskDescriptor>();
-                           if((tmpSchedule.getTargetCoreTable() == null) || (!tmpSchedule.getTargetCoreTable().contains(tmpfs))) {
-                               // add up all possible cores' info
-                               Iterator it_edges = tmpfs.edges();
-                               while(it_edges.hasNext()) {
-                                   TaskDescriptor tmptd = ((FEdge)it_edges.next()).getTask();
-                                   if(!tmptds.contains(tmptd)) {
-                                       tmptds.add(tmptd);
-                                       Vector<Schedule> tmpcores = td2cores.get(tmptd);
-                                       for(int m = 0; m < tmpcores.size(); ++m) {
-                                           if(m != tmpSchedule.getCoreNum()) {
-                                               // if the FlagState can be fed to some multi-param tasks,
-                                               // need to record corresponding ally cores later
-                                               if(tmptd.numParameters() > 1) {
-                                                   tmpSchedule.addAllyCore(tmpfs, tmpcores.elementAt(m).getCoreNum());
-                                               } else {
-                                                   tmpSchedule.addTargetCore(tmpfs, tmpcores.elementAt(m).getCoreNum());
-                                               }
-                                           }
-                                       }
-                                   }  
-                               }
-                           }
-                       }
-                       
-                       if(cores.size() > 1) {  
-                           Vector<FlagState> tmpfss = tmpSchedule.getFStates4TD(td);
-                           for(int h = 0; h < tmpfss.size(); ++h) {
-                               for(int l = 0; l < cores.size(); ++l) {
-                                   if(l != k) {
-                                       tmpSchedule.addAllyCore(tmpfss.elementAt(h), cores.elementAt(l).getCoreNum());
-                                   }
-                               }
-                           }
-                       }
-                   }
+
+           if(cores.size() > 1) {
+             Vector<FlagState> tmpfss = tmpSchedule.getFStates4TD(td);
+             for(int h = 0; h < tmpfss.size(); ++h) {
+               for(int l = 0; l < cores.size(); ++l) {
+                 if(l != k) {
+                   tmpSchedule.addAllyCore(tmpfss.elementAt(h), cores.elementAt(l).getCoreNum());
+                 }
                }
+             }
            }
-           
-           this.schedulings.add(scheduling);
+         }
        }
+      }
+
+      this.schedulings.add(scheduling);
     }
-    
-    public Vector<ScheduleNode> generateScheduling(Vector<Vector<ScheduleNode>> rootnodes, Vector<Vector<CombinationUtil.Combine>> combine, int gid) {
-       Vector<ScheduleNode> result = new Vector<ScheduleNode>();
-
-       // clone the ScheduleNodes
-       Hashtable<ScheduleNode, Hashtable<ClassNode, ClassNode>> sn2hash = new Hashtable<ScheduleNode, Hashtable<ClassNode, ClassNode>>();
-       Hashtable<ScheduleNode, ScheduleNode> sn2sn = new Hashtable<ScheduleNode, ScheduleNode>();
-       for(int i = 0; i < this.scheduleNodes.size(); i++) {
-           Hashtable<ClassNode, ClassNode> cn2cn = new Hashtable<ClassNode, ClassNode>();
-           ScheduleNode tocopy = this.scheduleNodes.elementAt(i);
-           ScheduleNode temp = (ScheduleNode)tocopy.clone(cn2cn, gid);
-           result.add(i, temp);
-           sn2hash.put(temp, cn2cn);
-           sn2sn.put(tocopy, temp);
-           cn2cn = null;
-       }
-       // clone the ScheduleEdges
-       for(int i = 0; i < this.scheduleEdges.size(); i++) {
-           ScheduleEdge sse = this.scheduleEdges.elementAt(i);
-           ScheduleNode csource = sn2sn.get(sse.getSource());
-           ScheduleNode ctarget = sn2sn.get(sse.getTarget());
-           Hashtable<ClassNode, ClassNode> sourcecn2cn = sn2hash.get(csource);
-           Hashtable<ClassNode, ClassNode> targetcn2cn = sn2hash.get(ctarget);
-           ScheduleEdge se =  null;
-           switch(sse.getType()) {
-           case ScheduleEdge.NEWEDGE: {
-               se = new ScheduleEdge(ctarget, "new", sse.getFstate(), sse.getType(), gid);//new ScheduleEdge(ctarget, "new", sse.getClassDescriptor(), sse.getIsNew(), gid);
-               se.setProbability(sse.getProbability());
-               se.setNewRate(sse.getNewRate());
-               break;
-           } 
-           case ScheduleEdge.TRANSEDGE: {
-               se = new ScheduleEdge(ctarget, "transmit", sse.getFstate(), sse.getType(), gid);//new ScheduleEdge(ctarget, "transmit", sse.getClassDescriptor(), false, gid);
-               break;
-           }
-           }
-           se.setSourceCNode(sourcecn2cn.get(sse.getSourceCNode()));
-           se.setTargetCNode(targetcn2cn.get(sse.getTargetCNode()));
-           se.setFEdge(sse.getFEdge());
-           se.setTargetFState(sse.getTargetFState());
-           se.setIsclone(true);
-           csource.addEdge(se);
-           sourcecn2cn = null;
-           targetcn2cn = null;
-       }
-       
-       // combine those nodes in combine with corresponding rootnodes
-       for(int i = 0; i < combine.size(); i++) {
-           if(combine.elementAt(i) != null) {
-               for(int j = 0; j < combine.elementAt(i).size(); j++) {
-                   CombinationUtil.Combine tmpcombine = combine.elementAt(i).elementAt(j);
-                   ScheduleNode tocombine = sn2sn.get(tmpcombine.node);
-                   ScheduleNode root = sn2sn.get(rootnodes.elementAt(tmpcombine.root).elementAt(tmpcombine.index));
-                   ScheduleEdge se = (ScheduleEdge)tocombine.inedges().next();
-                   try{
-                       if(root.equals(((ScheduleNode)se.getSource()))) {
-                           root.mergeSEdge(se);
-                           if(ScheduleEdge.NEWEDGE == se.getType()) {
-                               // As se has been changed into an internal edge inside a ScheduleNode, 
-                               // change the source and target of se from original ScheduleNodes into ClassNodes.
-                               se.setTarget(se.getTargetCNode());
-                               se.setSource(se.getSourceCNode());
-                               se.getTargetCNode().addEdge(se);
-                           }
-                       } else {
-                           root.mergeSNode(tocombine);
-                       }
-                   } catch(Exception e) {
-                       e.printStackTrace();
-                       System.exit(-1);
-                   }
-                   result.removeElement(tocombine);
-               }
+  }
+
+  public Vector<ScheduleNode> generateScheduling(Vector<Vector<ScheduleNode>> rootnodes, Vector<Vector<CombinationUtil.Combine>> combine, int gid) {
+    Vector<ScheduleNode> result = new Vector<ScheduleNode>();
+
+    // clone the ScheduleNodes
+    Hashtable<ScheduleNode, Hashtable<ClassNode, ClassNode>> sn2hash = new Hashtable<ScheduleNode, Hashtable<ClassNode, ClassNode>>();
+    Hashtable<ScheduleNode, ScheduleNode> sn2sn = new Hashtable<ScheduleNode, ScheduleNode>();
+    for(int i = 0; i < this.scheduleNodes.size(); i++) {
+      Hashtable<ClassNode, ClassNode> cn2cn = new Hashtable<ClassNode, ClassNode>();
+      ScheduleNode tocopy = this.scheduleNodes.elementAt(i);
+      ScheduleNode temp = (ScheduleNode)tocopy.clone(cn2cn, gid);
+      result.add(i, temp);
+      sn2hash.put(temp, cn2cn);
+      sn2sn.put(tocopy, temp);
+      cn2cn = null;
+    }
+    // clone the ScheduleEdges
+    for(int i = 0; i < this.scheduleEdges.size(); i++) {
+      ScheduleEdge sse = this.scheduleEdges.elementAt(i);
+      ScheduleNode csource = sn2sn.get(sse.getSource());
+      ScheduleNode ctarget = sn2sn.get(sse.getTarget());
+      Hashtable<ClassNode, ClassNode> sourcecn2cn = sn2hash.get(csource);
+      Hashtable<ClassNode, ClassNode> targetcn2cn = sn2hash.get(ctarget);
+      ScheduleEdge se =  null;
+      switch(sse.getType()) {
+      case ScheduleEdge.NEWEDGE: {
+       se = new ScheduleEdge(ctarget, "new", sse.getFstate(), sse.getType(), gid);       //new ScheduleEdge(ctarget, "new", sse.getClassDescriptor(), sse.getIsNew(), gid);
+       se.setProbability(sse.getProbability());
+       se.setNewRate(sse.getNewRate());
+       break;
+      }
+
+      case ScheduleEdge.TRANSEDGE: {
+       se = new ScheduleEdge(ctarget, "transmit", sse.getFstate(), sse.getType(), gid);       //new ScheduleEdge(ctarget, "transmit", sse.getClassDescriptor(), false, gid);
+       break;
+      }
+      }
+      se.setSourceCNode(sourcecn2cn.get(sse.getSourceCNode()));
+      se.setTargetCNode(targetcn2cn.get(sse.getTargetCNode()));
+      se.setFEdge(sse.getFEdge());
+      se.setTargetFState(sse.getTargetFState());
+      se.setIsclone(true);
+      csource.addEdge(se);
+      sourcecn2cn = null;
+      targetcn2cn = null;
+    }
+
+    // combine those nodes in combine with corresponding rootnodes
+    for(int i = 0; i < combine.size(); i++) {
+      if(combine.elementAt(i) != null) {
+       for(int j = 0; j < combine.elementAt(i).size(); j++) {
+         CombinationUtil.Combine tmpcombine = combine.elementAt(i).elementAt(j);
+         ScheduleNode tocombine = sn2sn.get(tmpcombine.node);
+         ScheduleNode root = sn2sn.get(rootnodes.elementAt(tmpcombine.root).elementAt(tmpcombine.index));
+         ScheduleEdge se = (ScheduleEdge)tocombine.inedges().next();
+         try{
+           if(root.equals(((ScheduleNode)se.getSource()))) {
+             root.mergeSEdge(se);
+             if(ScheduleEdge.NEWEDGE == se.getType()) {
+               // As se has been changed into an internal edge inside a ScheduleNode,
+               // change the source and target of se from original ScheduleNodes into ClassNodes.
+               se.setTarget(se.getTargetCNode());
+               se.setSource(se.getSourceCNode());
+               se.getTargetCNode().addEdge(se);
+             }
+           } else {
+             root.mergeSNode(tocombine);
            }
+         } catch(Exception e) {
+           e.printStackTrace();
+           System.exit(-1);
+         }
+         result.removeElement(tocombine);
        }
-       
-       sn2hash = null;
-       sn2sn = null;
-       
-       String path = "scheduling_" + gid + ".dot";
-       SchedulingUtil.printScheduleGraph(path, result);
-       
-       return result;
+      }
     }
+
+    sn2hash = null;
+    sn2sn = null;
+
+    String path = "scheduling_" + gid + ".dot";
+    SchedulingUtil.printScheduleGraph(path, result);
+
+    return result;
+  }
 }