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 Set<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 Vector<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 HashSet<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 Vector<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 ) {
184 public void addOutVarSet( Set<TempDescriptor> s ) {
188 public Set<TempDescriptor> getInVarSet() {
192 Vector<TempDescriptor> vecinVars;
194 HashSet<TempDescriptor> paramset=new HashSet<TempDescriptor>();
195 paramset.addAll(inVars);
196 paramset.addAll(outVars);
197 vecinVars=new Vector<TempDescriptor>();
198 vecinVars.addAll(paramset);
201 public TempDescriptor getParameter(int i) {
202 if (vecinVars==null) {
205 return vecinVars.get(i);
208 public int numParameters() {
209 if (vecinVars==null) {
212 return vecinVars.size();
215 public Set<FlatNode> getNodeSet() {
216 HashSet<FlatNode> tovisit=new HashSet<FlatNode>();
217 HashSet<FlatNode> visited=new HashSet<FlatNode>();
219 while(!tovisit.isEmpty()) {
220 FlatNode fn=tovisit.iterator().next();
225 for(int i=0; i<fn.numNext(); i++) {
226 FlatNode nn=fn.getNext(i);
227 if (!visited.contains(nn))
235 public Set<TempDescriptor> getOutVarSet() {
239 public void addNeededStaticName( SESEandAgePair p ) {
240 needStaticNameInCode.add( p );
243 public Set<SESEandAgePair> getNeededStaticNames() {
244 return needStaticNameInCode;
247 public void addStaticInVarSrc( SESEandAgePair p ) {
248 staticInVarSrcs.add( p );
251 public Set<SESEandAgePair> getStaticInVarSrcs() {
252 return staticInVarSrcs;
255 public void addReadyInVar( TempDescriptor td ) {
256 readyInVars.add( td );
259 public Set<TempDescriptor> getReadyInVarSet() {
263 public void addStaticInVar( TempDescriptor td ) {
264 staticInVars.add( td );
267 public Set<TempDescriptor> getStaticInVarSet() {
271 public void putStaticInVar2src( TempDescriptor staticInVar,
272 VariableSourceToken vst ) {
273 staticInVar2src.put( staticInVar, vst );
276 public VariableSourceToken getStaticInVarSrc( TempDescriptor staticInVar ) {
277 return staticInVar2src.get( staticInVar );
280 public void addDynamicInVar( TempDescriptor td ) {
281 dynamicInVars.add( td );
284 public Set<TempDescriptor> getDynamicInVarSet() {
285 return dynamicInVars;
288 public void addDynamicVar( TempDescriptor td ) {
289 dynamicVars.add( td );
292 public Set<TempDescriptor> getDynamicVarSet() {
296 public void mustTrackAtLeastAge( Integer age ) {
297 if( age > oldestAgeToTrack ) {
298 oldestAgeToTrack = new Integer( age );
302 public Integer getOldestAgeToTrack() {
303 return oldestAgeToTrack;
306 public void setfmEnclosing( FlatMethod fm ) { fmEnclosing = fm; }
307 public FlatMethod getfmEnclosing() { return fmEnclosing; }
309 public void setmdEnclosing( MethodDescriptor md ) { mdEnclosing = md; }
310 public MethodDescriptor getmdEnclosing() { return mdEnclosing; }
312 public void setcdEnclosing( ClassDescriptor cd ) { cdEnclosing = cd; }
313 public ClassDescriptor getcdEnclosing() { return cdEnclosing; }
315 public void setfmBogus( FlatMethod fm ) { fmBogus = fm; }
316 public FlatMethod getfmBogus() { return fmBogus; }
318 public void setmdBogus( MethodDescriptor md ) { mdBogus = md; }
319 public MethodDescriptor getmdBogus() { return mdBogus; }
321 public String getSESEmethodName() {
322 assert cdEnclosing != null;
323 assert mdBogus != null;
326 cdEnclosing.getSafeSymbol()+
327 mdBogus.getSafeSymbol()+
329 mdBogus.getSafeMethodDescriptor();
332 public String getSESErecordName() {
333 assert cdEnclosing != null;
334 assert mdBogus != null;
338 cdEnclosing.getSafeSymbol()+
339 mdBogus.getSafeSymbol()+
341 mdBogus.getSafeMethodDescriptor()+
345 public void setCallerSESEplaceholder() {
346 isCallerSESEplaceholder = true;
349 public boolean getIsCallerSESEplaceholder() {
350 return isCallerSESEplaceholder;
354 public boolean equals( Object o ) {
359 if( !(o instanceof FlatSESEEnterNode) ) {
363 FlatSESEEnterNode fsen = (FlatSESEEnterNode) o;
364 return id == fsen.id;
367 public int hashCode() {
371 public void writeEffects(TempDescriptor td, String fd, TypeDescriptor type, HeapRegionNode hrn, boolean strongUpdate){
372 seseEffectsSet.addWritingVar(td, new SESEEffectsKey(fd, type, hrn.getID(), hrn.getGloballyUniqueIdentifier()));
374 seseEffectsSet.addStrongUpdateVar(td, new SESEEffectsKey(fd, type, hrn.getID(), hrn.getGloballyUniqueIdentifier()));
378 public void readEffects(TempDescriptor td, String fd, TypeDescriptor type, HeapRegionNode hrn ){
379 seseEffectsSet.addReadingVar(td, new SESEEffectsKey(fd, type, hrn.getID(), hrn.getGloballyUniqueIdentifier()));
382 public SESEEffectsSet getSeseEffectsSet(){
383 return seseEffectsSet;
387 public void setFirstDepRecField( String field ) {
388 firstDepRecField = field;
391 public String getFirstDepRecField() {
392 return firstDepRecField;
395 public void incNumDepRecs() {
399 public int getNumDepRecs() {
403 public Vector<TempDescriptor> getInVarsForDynamicCoarseConflictResolution() {
404 return inVarsForDynamicCoarseConflictResolution;
407 public void addInVarForDynamicCoarseConflictResolution(TempDescriptor inVar) {
408 if (!inVarsForDynamicCoarseConflictResolution.contains(inVar))
409 inVarsForDynamicCoarseConflictResolution.add(inVar);
412 public void setIsLeafSESE( boolean isLeaf ) {
414 isLeafSESE = ISLEAF_TRUE;
416 isLeafSESE = ISLEAF_FALSE;
420 public boolean getIsLeafSESE() {
421 if( isLeafSESE == ISLEAF_UNINIT ) {
422 throw new Error( "isLeafSESE uninitialized" );
425 return isLeafSESE == ISLEAF_TRUE;