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;
79 // a set of sese located at the first in transitive call chain
80 // starting from the current sese
81 protected Set<FlatSESEEnterNode> seseChildren;
83 public FlatSESEEnterNode( SESENode sn ) {
84 this.id = identifier++;
87 oldestAgeToTrack = new Integer( 0 );
89 children = new HashSet<FlatSESEEnterNode>();
90 inVars = new HashSet<TempDescriptor>();
91 outVars = new HashSet<TempDescriptor>();
92 needStaticNameInCode = new HashSet<SESEandAgePair>();
93 staticInVarSrcs = new HashSet<SESEandAgePair>();
94 readyInVars = new HashSet<TempDescriptor>();
95 staticInVars = new HashSet<TempDescriptor>();
96 dynamicInVars = new HashSet<TempDescriptor>();
97 dynamicVars = new HashSet<TempDescriptor>();
98 seseChildren = new HashSet<FlatSESEEnterNode>();
100 inVarsForDynamicCoarseConflictResolution = new Vector<TempDescriptor>();
102 staticInVar2src = new Hashtable<TempDescriptor, VariableSourceToken>();
104 seseEffectsSet = new SESEEffectsSet();
110 isCallerSESEplaceholder = false;
112 isLeafSESE = ISLEAF_UNINIT;
114 firstDepRecField = null;
118 public void rewriteUse() {
121 public void rewriteDef() {
124 public void setFlatExit( FlatSESEExitNode fsexn ) {
128 public FlatSESEExitNode getFlatExit() {
133 return FKind.FlatSESEEnterNode;
136 public SESENode getTreeNode() {
140 public int getIdentifier() {
144 public String getPrettyIdentifier() {
145 if( treeNode.getID() != null ) {
146 return treeNode.getID();
151 public String toString() {
152 return "sese "+getPrettyIdentifier()+" enter";
155 public String toPrettyString() {
156 return "sese "+getPrettyIdentifier()+getIdentifier();
159 public void setParent( FlatSESEEnterNode parent ) {
160 this.parent = parent;
163 public FlatSESEEnterNode getParent() {
167 public void addChild( FlatSESEEnterNode child ) {
168 children.add( child );
171 public Set<FlatSESEEnterNode> getChildren() {
175 public void addInVar( TempDescriptor td ) {
176 if (!inVars.contains(td))
180 public void addOutVar( TempDescriptor td ) {
184 public void addInVarSet( Set<TempDescriptor> s ) {
188 public void addOutVarSet( Set<TempDescriptor> s ) {
192 public Set<TempDescriptor> getInVarSet() {
196 Vector<TempDescriptor> vecinVars;
198 HashSet<TempDescriptor> paramset=new HashSet<TempDescriptor>();
199 paramset.addAll(inVars);
200 paramset.addAll(outVars);
201 vecinVars=new Vector<TempDescriptor>();
202 vecinVars.addAll(paramset);
205 public TempDescriptor getParameter(int i) {
206 if (vecinVars==null) {
209 return vecinVars.get(i);
212 public int numParameters() {
213 if (vecinVars==null) {
216 return vecinVars.size();
219 public Set<FlatNode> getNodeSet() {
220 HashSet<FlatNode> tovisit=new HashSet<FlatNode>();
221 HashSet<FlatNode> visited=new HashSet<FlatNode>();
223 while(!tovisit.isEmpty()) {
224 FlatNode fn=tovisit.iterator().next();
229 for(int i=0; i<fn.numNext(); i++) {
230 FlatNode nn=fn.getNext(i);
231 if (!visited.contains(nn))
239 public Set<TempDescriptor> getOutVarSet() {
243 public void addNeededStaticName( SESEandAgePair p ) {
244 needStaticNameInCode.add( p );
247 public Set<SESEandAgePair> getNeededStaticNames() {
248 return needStaticNameInCode;
251 public void addStaticInVarSrc( SESEandAgePair p ) {
252 staticInVarSrcs.add( p );
255 public Set<SESEandAgePair> getStaticInVarSrcs() {
256 return staticInVarSrcs;
259 public void addReadyInVar( TempDescriptor td ) {
260 readyInVars.add( td );
263 public Set<TempDescriptor> getReadyInVarSet() {
267 public void addStaticInVar( TempDescriptor td ) {
268 staticInVars.add( td );
271 public Set<TempDescriptor> getStaticInVarSet() {
275 public void putStaticInVar2src( TempDescriptor staticInVar,
276 VariableSourceToken vst ) {
277 staticInVar2src.put( staticInVar, vst );
280 public VariableSourceToken getStaticInVarSrc( TempDescriptor staticInVar ) {
281 return staticInVar2src.get( staticInVar );
284 public void addDynamicInVar( TempDescriptor td ) {
285 dynamicInVars.add( td );
288 public Set<TempDescriptor> getDynamicInVarSet() {
289 return dynamicInVars;
292 public void addDynamicVar( TempDescriptor td ) {
293 dynamicVars.add( td );
296 public Set<TempDescriptor> getDynamicVarSet() {
300 public void mustTrackAtLeastAge( Integer age ) {
301 if( age > oldestAgeToTrack ) {
302 oldestAgeToTrack = new Integer( age );
306 public Integer getOldestAgeToTrack() {
307 return oldestAgeToTrack;
310 public void setfmEnclosing( FlatMethod fm ) { fmEnclosing = fm; }
311 public FlatMethod getfmEnclosing() { return fmEnclosing; }
313 public void setmdEnclosing( MethodDescriptor md ) { mdEnclosing = md; }
314 public MethodDescriptor getmdEnclosing() { return mdEnclosing; }
316 public void setcdEnclosing( ClassDescriptor cd ) { cdEnclosing = cd; }
317 public ClassDescriptor getcdEnclosing() { return cdEnclosing; }
319 public void setfmBogus( FlatMethod fm ) { fmBogus = fm; }
320 public FlatMethod getfmBogus() { return fmBogus; }
322 public void setmdBogus( MethodDescriptor md ) { mdBogus = md; }
323 public MethodDescriptor getmdBogus() { return mdBogus; }
325 public String getSESEmethodName() {
326 assert cdEnclosing != null;
327 assert mdBogus != null;
330 cdEnclosing.getSafeSymbol()+
331 mdBogus.getSafeSymbol()+
333 mdBogus.getSafeMethodDescriptor();
336 public String getSESErecordName() {
337 assert cdEnclosing != null;
338 assert mdBogus != null;
342 cdEnclosing.getSafeSymbol()+
343 mdBogus.getSafeSymbol()+
345 mdBogus.getSafeMethodDescriptor()+
349 public void setCallerSESEplaceholder() {
350 isCallerSESEplaceholder = true;
353 public boolean getIsCallerSESEplaceholder() {
354 return isCallerSESEplaceholder;
357 public void addSESEChildren(FlatSESEEnterNode child){
358 seseChildren.add(child);
361 public void addSESEChildren(Set<FlatSESEEnterNode> children){
362 seseChildren.addAll(children);
365 public Set<FlatSESEEnterNode> getSESEChildren(){
369 public boolean equals( Object o ) {
374 if( !(o instanceof FlatSESEEnterNode) ) {
378 FlatSESEEnterNode fsen = (FlatSESEEnterNode) o;
379 return id == fsen.id;
382 public int hashCode() {
386 public void writeEffects(TempDescriptor td, String fd, TypeDescriptor type, HeapRegionNode hrn, boolean strongUpdate){
387 seseEffectsSet.addWritingVar(td, new SESEEffectsKey(fd, type, hrn.getID(), hrn.getGloballyUniqueIdentifier()));
389 seseEffectsSet.addStrongUpdateVar(td, new SESEEffectsKey(fd, type, hrn.getID(), hrn.getGloballyUniqueIdentifier()));
393 public void readEffects(TempDescriptor td, String fd, TypeDescriptor type, HeapRegionNode hrn ){
394 seseEffectsSet.addReadingVar(td, new SESEEffectsKey(fd, type, hrn.getID(), hrn.getGloballyUniqueIdentifier()));
397 public SESEEffectsSet getSeseEffectsSet(){
398 return seseEffectsSet;
402 public void setFirstDepRecField( String field ) {
403 firstDepRecField = field;
406 public String getFirstDepRecField() {
407 return firstDepRecField;
410 public void incNumDepRecs() {
414 public int getNumDepRecs() {
418 public Vector<TempDescriptor> getInVarsForDynamicCoarseConflictResolution() {
419 return inVarsForDynamicCoarseConflictResolution;
422 public void addInVarForDynamicCoarseConflictResolution(TempDescriptor inVar) {
423 if (!inVarsForDynamicCoarseConflictResolution.contains(inVar))
424 inVarsForDynamicCoarseConflictResolution.add(inVar);
427 public void setIsLeafSESE( boolean isLeaf ) {
429 isLeafSESE = ISLEAF_TRUE;
431 isLeafSESE = ISLEAF_FALSE;
435 public boolean getIsLeafSESE() {
436 if( isLeafSESE == ISLEAF_UNINIT ) {
437 throw new Error( "isLeafSESE uninitialized" );
440 return isLeafSESE == ISLEAF_TRUE;