import IR.*;
public class PrefetchPair {
- TempDescriptor base;
- ArrayList<Descriptor> desc;
- ArrayList<Boolean> isTempDesc; //Keeps track if the desc is a FieldDescriptor or TempDescriptor. Has same size() as desc
-
+ public TempDescriptor base;
+ public ArrayList<Descriptor> desc;
+
+ public PrefetchPair(){
+ base = new TempDescriptor("");
+ desc = new ArrayList<Descriptor>();
+ }
+
+ public PrefetchPair(TempDescriptor t, Descriptor f) {
+ base = t;
+ desc = new ArrayList<Descriptor>();
+ desc.add(f);
+ }
- public PrefetchPair() {
- }
-
- public PrefetchPair(TempDescriptor t) {
- base = t;
- desc = null;
- isTempDesc = null;
- }
-
- public PrefetchPair(TempDescriptor t, Descriptor f, Boolean type) {
- base = t;
- if (desc == null)
- desc = new ArrayList<Descriptor>();
- if (isTempDesc == null)
- isTempDesc = new ArrayList<Boolean>();
- desc.add(f);
- isTempDesc.add(type);
- }
-
- public PrefetchPair(TempDescriptor t, ArrayList<Descriptor> descriptor, ArrayList<Boolean> bool) {
- base = t;
- if(desc == null){
- desc = new ArrayList<Descriptor>();
- }
- if(isTempDesc == null)
- isTempDesc = new ArrayList<Boolean>();
- desc.addAll(descriptor);
- isTempDesc.addAll(bool);
- }
-
- public TempDescriptor getBase() {
- return base;
- }
+ public PrefetchPair(TempDescriptor t, ArrayList<Descriptor> descriptor) {
+ base = t;
+ desc = new ArrayList<Descriptor>();
+ desc.addAll(descriptor);
+ }
- public boolean isTempDescDesc(int index) {
- return isTempDesc.get(index).booleanValue();
+ public TempDescriptor getBase() {
+ return base;
+ }
+
+ public Descriptor getDescAt(int index) {
+ return desc.get(index);
+ }
+
+ public ArrayList<Descriptor> getDesc() {
+ return desc;
+ }
+
+ public FieldDescriptor getFieldDesc(int index) {
+ return (FieldDescriptor) desc.get(index);
+ }
+
+ public IndexDescriptor getIndexDesc(int index) {
+ return (IndexDescriptor) desc.get(index);
+ }
+
+ public int hashCode() {
+ int hashcode = base.toString().hashCode();
+ if(desc != null) {
+ hashcode^=desc.hashCode();
}
-
- public Descriptor getDescAt(int index) {
- return desc.get(index);
- }
-
- public ArrayList<Descriptor> getDesc() {
- return desc;
- }
-
- public ArrayList<Boolean> getisTempDesc() {
- return isTempDesc;
+ return hashcode;
+ }
+
+ public String toString() {
+ String label= getBase().toString();
+ if(getDesc() == null)
+ return label;
+ ListIterator it=getDesc().listIterator();
+ for(;it.hasNext();) {
+ Object o = it.next();
+ if(o instanceof FieldDescriptor) {
+ FieldDescriptor fd = (FieldDescriptor) o;
+ label+="."+ fd.toString();
+ } else {
+ IndexDescriptor id = (IndexDescriptor) o;
+ label+= id.toString();
+ }
}
-
- public FieldDescriptor getFieldDesc(int index) {
- return (FieldDescriptor) desc.get(index);
- }
-
- public TempDescriptor getTempDesc(int index) {
- return (TempDescriptor) desc.get(index);
+ return label;
+ }
+
+ public boolean equals(Object o) {
+ if(o instanceof PrefetchPair) {
+ PrefetchPair pp = (PrefetchPair) o;
+ return base == pp.base && desc.equals(pp.desc);
}
-
- public int hashCode() {
- int hashcode = base.toString().hashCode();
- if(desc != null) {
- ListIterator li = desc.listIterator();
- while(li.hasNext()) {
- hashcode = hashcode ^ li.next().toString().hashCode();
- }
+ return false;
+ }
+
+ public Object clone() {
+ PrefetchPair newpp = new PrefetchPair();
+ newpp.base = this.base;
+ for(int i = 0; i < this.desc.size(); i++) {
+ Object o = desc.get(i);
+ if(o instanceof FieldDescriptor) {
+ newpp.desc.add((FieldDescriptor) o);
+ } else {
+ ArrayList<TempDescriptor> td = new ArrayList<TempDescriptor>();
+ for(int j = 0; j < ((IndexDescriptor)o).tddesc.size(); j++) {
+ td.add(((IndexDescriptor)o).getTempDescAt(j));
}
- return hashcode;
+ IndexDescriptor idesc = new IndexDescriptor();
+ idesc.tddesc = td;
+ idesc.offset = ((IndexDescriptor)o).offset;
+ newpp.desc.add(idesc);
+ }
}
+ return newpp;
+ }
- public String toString() {
- String label= getBase().toString();
- if(getDesc() == null || getisTempDesc() == null)
- return label;
- ListIterator it=getDesc().listIterator();
- ListIterator istemp=getisTempDesc().listIterator();
- for(;it.hasNext() && istemp.hasNext();) {
- Boolean isFd = (Boolean) istemp.next();
- if(isFd.booleanValue() == false) {
- FieldDescriptor fd = (FieldDescriptor) it.next();
- label+="."+ fd.toString();
- } else {
- TempDescriptor td = (TempDescriptor) it.next();
- label+="."+ td.toString();
- }
+ /** This function returns true if a tempdescriptor object is found in the array of descriptors
+ * for a given prefetch pair else returns false*/
+ public boolean containsTemp(TempDescriptor td) {
+ ArrayList<Descriptor> desc = (ArrayList<Descriptor>) getDesc();
+ for(ListIterator it = desc.listIterator();it.hasNext();) {
+ Object o = it.next();
+ if(o instanceof IndexDescriptor) {
+ ArrayList<TempDescriptor> tdarray = (ArrayList<TempDescriptor>)((IndexDescriptor)o).tddesc;
+ if(tdarray.contains(td)) {
+ return true;
}
- return label;
+ }
}
+ return false;
+ }
- public boolean equals(Object o) {
- if(o instanceof PrefetchPair) {
- PrefetchPair pp = (PrefetchPair) o;
- if(base != pp.base) {
- return false;
- }
- if (desc == null && pp.desc == null) {
- return true;
- } else if (desc != null && pp.desc != null) {
- if (desc.equals((List<Descriptor>)pp.desc) &&
- isTempDesc.equals((List<Boolean>)pp.isTempDesc)) {
- return true;
- }
- }
+ /** This function creates a new Arraylist of Descriptors by replacing old tempdescriptors with new
+ * tempdescriptors when there is a match */
+ public PrefetchPair replaceTemp(TempDescriptor td, TempDescriptor[] newtd) {
+ PrefetchPair npp=(PrefetchPair)clone();
+ ArrayList<Descriptor> desc = (ArrayList<Descriptor>) npp.getDesc();
+ for(ListIterator it = desc.listIterator();it.hasNext();) {
+ Object currdesc = it.next();
+ if(currdesc instanceof IndexDescriptor) {
+ ArrayList<TempDescriptor> tdarray = (ArrayList<TempDescriptor>)((IndexDescriptor)currdesc).tddesc;
+ if (tdarray.contains(td)) {
+ int index = tdarray.indexOf(td);
+ tdarray.set(index, newtd[0]);
+ for(int i=1;i<newtd.length;i++) {
+ tdarray.add(newtd[i]);
+ }
}
- return false;
+ }
}
+ return npp;
+ }
+
}
projects / IRC.git / blobdiff