2 import java.util.HashSet;
3 import java.util.Hashtable;
5 import java.util.Vector;
6 import java.util.Iterator;
7 import java.util.Collection;
9 import Analysis.MLP.SESEEffectsKey;
10 import Analysis.MLP.SESEEffectsSet;
11 import Analysis.MLP.SESEandAgePair;
12 import Analysis.MLP.VariableSourceToken;
13 import Analysis.OwnershipAnalysis.HeapRegionNode;
14 import IR.ClassDescriptor;
15 import IR.FieldDescriptor;
16 import IR.MethodDescriptor;
17 import IR.TypeDescriptor;
18 import IR.Tree.SESENode;
20 public class FlatSESEEnterNode extends FlatNode {
22 // SESE class identifiers should be numbered
23 // sequentially from 0 to 1-(total # SESE's)
24 private static int identifier=0;
27 protected FlatSESEExitNode exit;
28 protected SESENode treeNode;
29 protected FlatSESEEnterNode parent;
30 protected Integer oldestAgeToTrack;
31 protected boolean isCallerSESEplaceholder;
33 protected static final int ISLEAF_UNINIT = 1;
34 protected static final int ISLEAF_FALSE = 2;
35 protected static final int ISLEAF_TRUE = 3;
36 protected int isLeafSESE;
38 protected Set<FlatSESEEnterNode> children;
40 protected Vector<TempDescriptor> inVars;
41 protected Set<TempDescriptor> outVars;
43 protected Set<SESEandAgePair> needStaticNameInCode;
45 protected Set<SESEandAgePair> staticInVarSrcs;
47 protected Set<TempDescriptor> readyInVars;
48 protected Set<TempDescriptor> staticInVars;
49 protected Set<TempDescriptor> dynamicInVars;
51 protected Set<TempDescriptor> dynamicVars;
53 protected Hashtable<TempDescriptor, VariableSourceToken> staticInVar2src;
55 private SESEEffectsSet seseEffectsSet;
57 // a subset of the in-set variables that shouuld be traversed during
58 // the dynamic coarse grained conflict strategy, remember them here so
59 // buildcode can be dumb and just gen the traversals
60 protected Set<TempDescriptor> inVarsForDynamicCoarseConflictResolution;
62 // scope info for this SESE
63 protected FlatMethod fmEnclosing;
64 protected MethodDescriptor mdEnclosing;
65 protected ClassDescriptor cdEnclosing;
67 // structures that allow SESE to appear as
68 // a normal method to code generation
69 protected FlatMethod fmBogus;
70 protected MethodDescriptor mdBogus;
72 // used during code generation to calculate an offset
73 // into the SESE-specific record, specifically to the
74 // first field in a sequence of pointers to other SESE
75 // records which is relevant to garbage collection
76 protected String firstDepRecField;
77 protected int numDepRecs;
80 public FlatSESEEnterNode( SESENode sn ) {
81 this.id = identifier++;
84 oldestAgeToTrack = new Integer( 0 );
86 children = new HashSet<FlatSESEEnterNode>();
87 inVars = new Vector<TempDescriptor>();
88 outVars = new HashSet<TempDescriptor>();
89 needStaticNameInCode = new HashSet<SESEandAgePair>();
90 staticInVarSrcs = new HashSet<SESEandAgePair>();
91 readyInVars = new HashSet<TempDescriptor>();
92 staticInVars = new HashSet<TempDescriptor>();
93 dynamicInVars = new HashSet<TempDescriptor>();
94 dynamicVars = new HashSet<TempDescriptor>();
96 inVarsForDynamicCoarseConflictResolution = new HashSet<TempDescriptor>();
98 staticInVar2src = new Hashtable<TempDescriptor, VariableSourceToken>();
100 seseEffectsSet = new SESEEffectsSet();
106 isCallerSESEplaceholder = false;
108 isLeafSESE = ISLEAF_UNINIT;
110 firstDepRecField = null;
114 public void rewriteUse() {
117 public void rewriteDef() {
120 public void setFlatExit( FlatSESEExitNode fsexn ) {
124 public FlatSESEExitNode getFlatExit() {
129 return FKind.FlatSESEEnterNode;
132 public SESENode getTreeNode() {
136 public int getIdentifier() {
140 public String getPrettyIdentifier() {
141 if( treeNode.getID() != null ) {
142 return treeNode.getID();
147 public String toString() {
148 return "sese "+getPrettyIdentifier()+" enter";
151 public String toPrettyString() {
152 return "sese "+getPrettyIdentifier()+getIdentifier();
155 public void setParent( FlatSESEEnterNode parent ) {
156 this.parent = parent;
159 public FlatSESEEnterNode getParent() {
163 public void addChild( FlatSESEEnterNode child ) {
164 children.add( child );
167 public Set<FlatSESEEnterNode> getChildren() {
171 public void addInVar( TempDescriptor td ) {
172 if (!inVars.contains(td))
176 public void addOutVar( TempDescriptor td ) {
180 public void addInVarSet( Set<TempDescriptor> s ) {
181 for(Iterator<TempDescriptor> sit=s.iterator();sit.hasNext();) {
182 TempDescriptor tmp=sit.next();
183 if (!inVars.contains(tmp))
188 public void addOutVarSet( Set<TempDescriptor> s ) {
192 public Collection<TempDescriptor> getInVarSet() {
196 public Vector<TempDescriptor> getInVarVector() {
200 Vector<TempDescriptor> vecinVars;
202 HashSet<TempDescriptor> paramset=new HashSet<TempDescriptor>();
203 paramset.addAll(inVars);
204 paramset.addAll(outVars);
205 vecinVars=new Vector<TempDescriptor>();
206 vecinVars.addAll(paramset);
209 public TempDescriptor getParameter(int i) {
210 if (vecinVars==null) {
213 return vecinVars.get(i);
216 public int numParameters() {
217 if (vecinVars==null) {
220 return vecinVars.size();
223 public Set<FlatNode> getNodeSet() {
224 HashSet<FlatNode> tovisit=new HashSet<FlatNode>();
225 HashSet<FlatNode> visited=new HashSet<FlatNode>();
227 while(!tovisit.isEmpty()) {
228 FlatNode fn=tovisit.iterator().next();
233 for(int i=0; i<fn.numNext(); i++) {
234 FlatNode nn=fn.getNext(i);
235 if (!visited.contains(nn))
243 public Set<TempDescriptor> getOutVarSet() {
247 public void addNeededStaticName( SESEandAgePair p ) {
248 needStaticNameInCode.add( p );
251 public Set<SESEandAgePair> getNeededStaticNames() {
252 return needStaticNameInCode;
255 public void addStaticInVarSrc( SESEandAgePair p ) {
256 staticInVarSrcs.add( p );
259 public Set<SESEandAgePair> getStaticInVarSrcs() {
260 return staticInVarSrcs;
263 public void addReadyInVar( TempDescriptor td ) {
264 readyInVars.add( td );
267 public Set<TempDescriptor> getReadyInVarSet() {
271 public void addStaticInVar( TempDescriptor td ) {
272 staticInVars.add( td );
275 public Set<TempDescriptor> getStaticInVarSet() {
279 public void putStaticInVar2src( TempDescriptor staticInVar,
280 VariableSourceToken vst ) {
281 staticInVar2src.put( staticInVar, vst );
284 public VariableSourceToken getStaticInVarSrc( TempDescriptor staticInVar ) {
285 return staticInVar2src.get( staticInVar );
288 public void addDynamicInVar( TempDescriptor td ) {
289 dynamicInVars.add( td );
292 public Set<TempDescriptor> getDynamicInVarSet() {
293 return dynamicInVars;
296 public void addDynamicVar( TempDescriptor td ) {
297 dynamicVars.add( td );
300 public Set<TempDescriptor> getDynamicVarSet() {
304 public void mustTrackAtLeastAge( Integer age ) {
305 if( age > oldestAgeToTrack ) {
306 oldestAgeToTrack = new Integer( age );
310 public Integer getOldestAgeToTrack() {
311 return oldestAgeToTrack;
314 public void setfmEnclosing( FlatMethod fm ) { fmEnclosing = fm; }
315 public FlatMethod getfmEnclosing() { return fmEnclosing; }
317 public void setmdEnclosing( MethodDescriptor md ) { mdEnclosing = md; }
318 public MethodDescriptor getmdEnclosing() { return mdEnclosing; }
320 public void setcdEnclosing( ClassDescriptor cd ) { cdEnclosing = cd; }
321 public ClassDescriptor getcdEnclosing() { return cdEnclosing; }
323 public void setfmBogus( FlatMethod fm ) { fmBogus = fm; }
324 public FlatMethod getfmBogus() { return fmBogus; }
326 public void setmdBogus( MethodDescriptor md ) { mdBogus = md; }
327 public MethodDescriptor getmdBogus() { return mdBogus; }
329 public String getSESEmethodName() {
330 assert cdEnclosing != null;
331 assert mdBogus != null;
334 cdEnclosing.getSafeSymbol()+
335 mdBogus.getSafeSymbol()+
337 mdBogus.getSafeMethodDescriptor();
340 public String getSESErecordName() {
341 assert cdEnclosing != null;
342 assert mdBogus != null;
346 cdEnclosing.getSafeSymbol()+
347 mdBogus.getSafeSymbol()+
349 mdBogus.getSafeMethodDescriptor()+
353 public void setCallerSESEplaceholder() {
354 isCallerSESEplaceholder = true;
357 public boolean getIsCallerSESEplaceholder() {
358 return isCallerSESEplaceholder;
362 public boolean equals( Object o ) {
367 if( !(o instanceof FlatSESEEnterNode) ) {
371 FlatSESEEnterNode fsen = (FlatSESEEnterNode) o;
372 return id == fsen.id;
375 public int hashCode() {
379 public void writeEffects(TempDescriptor td, String fd, TypeDescriptor type, HeapRegionNode hrn, boolean strongUpdate){
380 seseEffectsSet.addWritingVar(td, new SESEEffectsKey(fd, type, hrn.getID(), hrn.getGloballyUniqueIdentifier()));
382 seseEffectsSet.addStrongUpdateVar(td, new SESEEffectsKey(fd, type, hrn.getID(), hrn.getGloballyUniqueIdentifier()));
386 public void readEffects(TempDescriptor td, String fd, TypeDescriptor type, HeapRegionNode hrn ){
387 seseEffectsSet.addReadingVar(td, new SESEEffectsKey(fd, type, hrn.getID(), hrn.getGloballyUniqueIdentifier()));
390 public SESEEffectsSet getSeseEffectsSet(){
391 return seseEffectsSet;
395 public void setFirstDepRecField( String field ) {
396 firstDepRecField = field;
399 public String getFirstDepRecField() {
400 return firstDepRecField;
403 public void incNumDepRecs() {
407 public int getNumDepRecs() {
411 public Set<TempDescriptor> getInVarsForDynamicCoarseConflictResolution() {
412 return inVarsForDynamicCoarseConflictResolution;
415 public void addInVarForDynamicCoarseConflictResolution(TempDescriptor inVar) {
416 inVarsForDynamicCoarseConflictResolution.add(inVar);
420 public void setIsLeafSESE( boolean isLeaf ) {
422 isLeafSESE = ISLEAF_TRUE;
424 isLeafSESE = ISLEAF_FALSE;
428 public boolean getIsLeafSESE() {
429 if( isLeafSESE == ISLEAF_UNINIT ) {
430 throw new Error( "isLeafSESE uninitialized" );
433 return isLeafSESE == ISLEAF_TRUE;