1 package Analysis.Locality;
4 import Analysis.CallGraph.CallGraph;
8 import IR.MethodDescriptor;
10 import IR.ClassDescriptor;
12 public class LocalityAnalysis {
15 Hashtable<LocalityBinding,LocalityBinding> discovered;
16 Hashtable<LocalityBinding, Set<LocalityBinding>> dependence;
17 Hashtable<LocalityBinding, Set<LocalityBinding>> calldep;
18 Hashtable<LocalityBinding, Hashtable<FlatNode,Hashtable<TempDescriptor, Integer>>> temptab;
19 Hashtable<LocalityBinding, Hashtable<FlatNode, Integer>> atomictab;
20 Hashtable<LocalityBinding, Hashtable<FlatAtomicEnterNode, Set<TempDescriptor>>> tempstosave;
21 Hashtable<ClassDescriptor, Set<LocalityBinding>> classtolb;
22 Hashtable<MethodDescriptor, Set<LocalityBinding>> methodtolb;
23 private LocalityBinding lbmain;
24 private LocalityBinding lbrun;
28 public static final Integer LOCAL=new Integer(0);
29 public static final Integer GLOBAL=new Integer(1);
30 public static final Integer EITHER=new Integer(2);
31 public static final Integer CONFLICT=new Integer(3);
33 public static final Integer STMEITHER=new Integer(0);
34 public static final Integer SCRATCH=new Integer(4);
35 public static final Integer NORMAL=new Integer(8);
36 public static final Integer STMCONFLICT=new Integer(12);
38 public LocalityAnalysis(State state, CallGraph callgraph, TypeUtil typeutil) {
39 this.typeutil=typeutil;
41 this.discovered=new Hashtable<LocalityBinding,LocalityBinding>();
42 this.dependence=new Hashtable<LocalityBinding, Set<LocalityBinding>>();
43 this.calldep=new Hashtable<LocalityBinding, Set<LocalityBinding>>();
44 this.temptab=new Hashtable<LocalityBinding, Hashtable<FlatNode,Hashtable<TempDescriptor, Integer>>>();
45 this.atomictab=new Hashtable<LocalityBinding, Hashtable<FlatNode, Integer>>();
46 this.lbtovisit=new Stack();
47 this.callgraph=callgraph;
48 this.tempstosave=new Hashtable<LocalityBinding, Hashtable<FlatAtomicEnterNode, Set<TempDescriptor>>>();
49 this.classtolb=new Hashtable<ClassDescriptor, Set<LocalityBinding>>();
50 this.methodtolb=new Hashtable<MethodDescriptor, Set<LocalityBinding>>();
54 public LocalityBinding getMain() {
58 /** This method returns the set of LocalityBindings that a given
59 * flatcall could invoke */
61 public LocalityBinding getBinding(LocalityBinding currlb, FlatCall fc) {
62 boolean isatomic=getAtomic(currlb).get(fc).intValue()>0;
63 Hashtable<TempDescriptor, Integer> currtable=getNodePreTempInfo(currlb,fc);
64 MethodDescriptor md=fc.getMethod();
66 boolean isnative=md.getModifiers().isNative();
68 LocalityBinding lb=new LocalityBinding(md, isatomic);
70 for(int i=0; i<fc.numArgs(); i++) {
71 TempDescriptor arg=fc.getArg(i);
72 lb.setGlobal(i,currtable.get(arg));
75 if (state.DSM&&fc.getThis()!=null) {
76 Integer thistype=currtable.get(fc.getThis());
79 lb.setGlobalThis(thistype);
80 } else if (state.SINGLETM&&fc.getThis()!=null) {
81 Integer thistype=currtable.get(fc.getThis());
84 lb.setGlobalThis(thistype);
87 // lb.setGlobalThis(EITHER);//default value
88 if (discovered.containsKey(lb))
89 lb=discovered.get(lb);
90 else throw new Error();
95 /** This method returns a set of LocalityBindings for the parameter class. */
96 public Set<LocalityBinding> getClassBindings(ClassDescriptor cd) {
97 return classtolb.get(cd);
100 /** This method returns a set of LocalityBindings for the parameter method. */
102 public Set<LocalityBinding> getMethodBindings(MethodDescriptor md) {
103 return methodtolb.get(md);
106 public Set<MethodDescriptor> getMethods() {
107 return methodtolb.keySet();
110 /** This method returns a set of LocalityBindings. A
111 * LocalityBinding specifies a context a method can be invoked in.
112 * It specifies whether the method is in a transaction and whether
113 * its parameter objects are locals or globals. */
115 public Set<LocalityBinding> getLocalityBindings() {
116 return discovered.keySet();
119 /** This method returns a hashtable for a given LocalityBinding
120 * that tells the current local/global status of temps at the each
121 * node in the flat representation. */
123 public Hashtable<FlatNode, Hashtable<TempDescriptor, Integer>> getNodeTempInfo(LocalityBinding lb) {
124 return temptab.get(lb);
127 /** This method returns a hashtable for a given LocalityBinding
128 * that tells the current local/global status of temps at the
129 * beginning of each node in the flat representation. */
131 public Hashtable<TempDescriptor, Integer> getNodePreTempInfo(LocalityBinding lb, FlatNode fn) {
132 Hashtable<TempDescriptor, Integer> currtable=new Hashtable<TempDescriptor, Integer>();
133 Hashtable<FlatNode, Hashtable<TempDescriptor, Integer>> temptable=getNodeTempInfo(lb);
135 for(int i=0; i<fn.numPrev(); i++) {
136 FlatNode prevnode=fn.getPrev(i);
137 Hashtable<TempDescriptor, Integer> prevtable=temptable.get(prevnode);
138 for(Iterator<TempDescriptor> tempit=prevtable.keySet().iterator(); tempit.hasNext();) {
139 TempDescriptor temp=tempit.next();
140 Integer tmpint=prevtable.get(temp);
141 Integer oldint=currtable.containsKey(temp) ? currtable.get(temp) : (state.DSM?EITHER:STMEITHER);
142 Integer newint=state.DSM?merge(tmpint, oldint):mergestm(tmpint, oldint);
143 currtable.put(temp, newint);
149 /** This method returns an hashtable for a given LocalitBinding
150 * that tells whether a node in the flat represenation is in a
151 * transaction or not. Integer values greater than 0 indicate
152 * that the node is in a transaction and give the nesting depth.
153 * The outermost AtomicEnterNode will have a value of 1 and the
154 * outermost AtomicExitNode will have a value of 0. */
156 public Hashtable<FlatNode, Integer> getAtomic(LocalityBinding lb) {
157 return atomictab.get(lb);
160 /** This methods returns a hashtable for a given LocalityBinding
161 * that tells which temps needs to be saved for each
162 * AtomicEnterNode. */
164 public Hashtable<FlatAtomicEnterNode, Set<TempDescriptor>> getTemps(LocalityBinding lb) {
165 return tempstosave.get(lb);
168 public Set<TempDescriptor> getTempSet(LocalityBinding lb) {
169 HashSet<TempDescriptor> set=new HashSet<TempDescriptor>();
170 Hashtable<FlatAtomicEnterNode, Set<TempDescriptor>> table=getTemps(lb);
172 for(Iterator<FlatAtomicEnterNode> faenit=table.keySet().iterator(); faenit.hasNext();) {
173 FlatAtomicEnterNode faen=faenit.next();
174 set.addAll(table.get(faen));
179 private void doAnalysis() {
181 computeLocalityBindingsSTM();
183 computeLocalityBindings();
184 computeTempstoSave();
188 private void cleanSets() {
189 HashSet<LocalityBinding> lbset=new HashSet<LocalityBinding>();
190 Stack<LocalityBinding> lbstack=new Stack<LocalityBinding>();
195 while(!lbstack.isEmpty()) {
196 LocalityBinding lb=lbstack.pop();
197 if (calldep.containsKey(lb)) {
198 Set<LocalityBinding> set=new HashSet<LocalityBinding>();
199 set.addAll(calldep.get(lb));
200 set.removeAll(lbset);
205 for(Iterator<LocalityBinding> lbit=discovered.keySet().iterator(); lbit.hasNext();) {
206 LocalityBinding lb=lbit.next();
207 if (!lbset.contains(lb)) {
209 classtolb.get(lb.getMethod().getClassDesc()).remove(lb);
210 methodtolb.get(lb.getMethod()).remove(lb);
215 public MethodDescriptor getStart() {
216 ClassDescriptor cd=typeutil.getClass(TypeUtil.ThreadClass);
217 for(Iterator methodit=cd.getMethodTable().getSet("staticStart").iterator(); methodit
219 MethodDescriptor md=(MethodDescriptor) methodit.next();
220 if (md.numParameters()!=1||!md.getModifiers().isStatic()||!md.getParamType(0).getSymbol().equals(TypeUtil.ThreadClass))
224 throw new Error("Can't find Thread.run");
228 private void computeLocalityBindingsSTM() {
229 lbmain=new LocalityBinding(typeutil.getMain(), false);
230 lbmain.setGlobalReturn(STMEITHER);
231 lbmain.setGlobal(0, NORMAL);
232 lbtovisit.add(lbmain);
233 discovered.put(lbmain, lbmain);
234 if (!classtolb.containsKey(lbmain.getMethod().getClassDesc()))
235 classtolb.put(lbmain.getMethod().getClassDesc(), new HashSet<LocalityBinding>());
236 classtolb.get(lbmain.getMethod().getClassDesc()).add(lbmain);
238 if (!methodtolb.containsKey(lbmain.getMethod()))
239 methodtolb.put(lbmain.getMethod(), new HashSet<LocalityBinding>());
240 methodtolb.get(lbmain.getMethod()).add(lbmain);
242 //Do this to force a virtual table number for the run method
243 lbrun=new LocalityBinding(getStart(), false);
244 lbrun.setGlobalReturn(STMEITHER);
245 lbrun.setGlobal(0,NORMAL);
246 lbtovisit.add(lbrun);
247 discovered.put(lbrun, lbrun);
248 if (!classtolb.containsKey(lbrun.getMethod().getClassDesc()))
249 classtolb.put(lbrun.getMethod().getClassDesc(), new HashSet<LocalityBinding>());
250 classtolb.get(lbrun.getMethod().getClassDesc()).add(lbrun);
252 if (!methodtolb.containsKey(lbrun.getMethod()))
253 methodtolb.put(lbrun.getMethod(), new HashSet<LocalityBinding>());
254 methodtolb.get(lbrun.getMethod()).add(lbrun);
256 while(!lbtovisit.empty()) {
257 LocalityBinding lb=(LocalityBinding) lbtovisit.pop();
258 Integer returnglobal=lb.getGlobalReturn();
259 MethodDescriptor md=lb.getMethod();
260 Hashtable<FlatNode,Hashtable<TempDescriptor, Integer>> temptable=new Hashtable<FlatNode,Hashtable<TempDescriptor, Integer>>();
261 Hashtable<FlatNode, Integer> atomictable=new Hashtable<FlatNode, Integer>();
264 computeCallsFlagsSTM(md, lb, temptable, atomictable);
266 System.out.println("Error in "+md+" context "+lb);
270 temptab.put(lb, temptable);
271 atomictab.put(lb, atomictable);
273 if (md.getReturnType()!=null&&!returnglobal.equals(lb.getGlobalReturn())) {
274 //return type is more precise now
275 //rerun everything that call us
276 lbtovisit.addAll(dependence.get(lb));
281 private static Integer mergestm(Integer a, Integer b) {
282 if (a==null||a.equals(STMEITHER))
284 if (b==null||b.equals(STMEITHER))
291 public void computeCallsFlagsSTM(MethodDescriptor md, LocalityBinding lb, Hashtable<FlatNode, Hashtable<TempDescriptor, Integer>> temptable, Hashtable<FlatNode, Integer> atomictable) {
292 FlatMethod fm=state.getMethodFlat(md);
293 HashSet<FlatNode> tovisit=new HashSet<FlatNode>();
294 tovisit.add(fm.getNext(0));
296 // Build table for initial node
297 Hashtable<TempDescriptor,Integer> table=new Hashtable<TempDescriptor,Integer>();
298 temptable.put(fm, table);
299 atomictable.put(fm, lb.isAtomic() ? 1 : 0);
300 int offset=md.isStatic() ? 0 : 1;
301 if (!md.isStatic()) {
302 table.put(fm.getParameter(0), lb.getGlobalThis());
304 for(int i=offset; i<fm.numParameters(); i++) {
305 TempDescriptor temp=fm.getParameter(i);
306 Integer b=lb.isGlobal(i-offset);
311 while(!tovisit.isEmpty()) {
312 FlatNode fn=tovisit.iterator().next();
314 Hashtable<TempDescriptor, Integer> currtable=new Hashtable<TempDescriptor, Integer>();
316 for(int i=0; i<fn.numPrev(); i++) {
317 FlatNode prevnode=fn.getPrev(i);
318 if (atomictable.containsKey(prevnode)) {
319 atomicstate=atomictable.get(prevnode).intValue();
321 if (!temptable.containsKey(prevnode))
323 Hashtable<TempDescriptor, Integer> prevtable=temptable.get(prevnode);
324 for(Iterator<TempDescriptor> tempit=prevtable.keySet().iterator(); tempit.hasNext();) {
325 TempDescriptor temp=tempit.next();
326 Integer tmpint=prevtable.get(temp);
327 Integer oldint=currtable.containsKey(temp) ? currtable.get(temp) : STMEITHER;
328 Integer newint=mergestm(tmpint, oldint);
329 currtable.put(temp, newint);
332 atomictable.put(fn, atomicstate);
336 case FKind.FlatAtomicEnterNode:
337 processAtomicEnterNode((FlatAtomicEnterNode)fn, atomictable);
342 case FKind.FlatAtomicExitNode:
343 processAtomicExitNode((FlatAtomicExitNode)fn, atomictable);
347 processCallNodeSTM(lb, (FlatCall)fn, isAtomic(atomictable, fn), currtable, temptable.get(fn));
351 processNewSTM(lb, (FlatNew) fn, currtable);
354 case FKind.FlatFieldNode:
355 processFieldNodeSTM(lb, (FlatFieldNode) fn, currtable);
358 case FKind.FlatSetFieldNode:
359 processSetFieldNodeSTM(lb, (FlatSetFieldNode) fn, currtable);
362 case FKind.FlatSetElementNode:
363 processSetElementNodeSTM(lb, (FlatSetElementNode) fn, currtable);
366 case FKind.FlatElementNode:
367 processElementNodeSTM(lb, (FlatElementNode) fn, currtable);
370 case FKind.FlatOpNode:
371 processOpNodeSTM((FlatOpNode)fn, currtable);
374 case FKind.FlatCastNode:
375 processCastNodeSTM((FlatCastNode)fn, currtable);
378 case FKind.FlatReturnNode:
379 processReturnNodeSTM(lb, (FlatReturnNode)fn, currtable);
382 case FKind.FlatLiteralNode:
383 processLiteralNodeSTM((FlatLiteralNode)fn, currtable);
386 case FKind.FlatMethod:
387 case FKind.FlatOffsetNode:
388 case FKind.FlatInstanceOfNode:
389 case FKind.FlatCondBranch:
390 case FKind.FlatBackEdge:
392 case FKind.FlatPrefetchNode:
394 //No action needed for these
397 case FKind.FlatFlagActionNode:
398 case FKind.FlatCheckNode:
399 case FKind.FlatTagDeclaration:
400 throw new Error("Incompatible with tasks!");
403 throw new Error("In finding fn.kind()= " + fn.kind());
408 Hashtable<TempDescriptor,Integer> oldtable=temptable.get(fn);
409 if (oldtable==null||!oldtable.equals(currtable)) {
410 // Update table for this node
411 temptable.put(fn, currtable);
412 for(int i=0; i<fn.numNext(); i++) {
413 tovisit.add(fn.getNext(i));
419 void processNewSTM(LocalityBinding lb, FlatNew fn, Hashtable<TempDescriptor, Integer> currtable) {
421 currtable.put(fn.getDst(), SCRATCH);
423 currtable.put(fn.getDst(), NORMAL);
426 void processCallNodeSTM(LocalityBinding currlb, FlatCall fc, boolean isatomic, Hashtable<TempDescriptor, Integer> currtable, Hashtable<TempDescriptor, Integer> oldtable) {
427 MethodDescriptor nodemd=fc.getMethod();
429 Set runmethodset=null;
431 if (nodemd.isStatic()||nodemd.getReturnType()==null) {
432 methodset=new HashSet();
433 methodset.add(nodemd);
435 methodset=callgraph.getMethods(nodemd, fc.getThis().getType());
436 // Build start -> run link
437 if (nodemd.getClassDesc().getSymbol().equals(TypeUtil.ThreadClass)&&
438 nodemd.getSymbol().equals("start")&&!nodemd.getModifiers().isStatic()&&
439 nodemd.numParameters()==0) {
440 assert(nodemd.getModifiers().isNative());
442 MethodDescriptor runmd=null;
443 for(Iterator methodit=nodemd.getClassDesc().getMethodTable().getSet("staticStart").iterator(); methodit.hasNext();) {
444 MethodDescriptor md=(MethodDescriptor) methodit.next();
445 if (md.numParameters()!=1||!md.getModifiers().isStatic()||!md.getParamType(0).getSymbol().equals(TypeUtil.ThreadClass))
451 runmethodset=callgraph.getMethods(runmd,fc.getThis().getType());
452 methodset.addAll(runmethodset);
453 } else throw new Error("Can't find run method");
457 Integer currreturnval=STMEITHER; //Start off with the either value
458 if (oldtable!=null&&fc.getReturnTemp()!=null&&
459 oldtable.get(fc.getReturnTemp())!=null) {
461 currreturnval=mergestm(currreturnval, oldtable.get(fc.getReturnTemp()));
464 for(Iterator methodit=methodset.iterator(); methodit.hasNext();) {
465 MethodDescriptor md=(MethodDescriptor) methodit.next();
467 boolean isnative=md.getModifiers().isNative();
468 boolean isjoin = md.getClassDesc().getSymbol().equals(TypeUtil.ThreadClass)&&!nodemd.getModifiers().isStatic()&&nodemd.numParameters()==0&&md.getSymbol().equals("join");
469 boolean isObjectgetType = md.getClassDesc().getSymbol().equals("Object") && md.getSymbol().equals("getType");
470 boolean isObjecthashCode = md.getClassDesc().getSymbol().equals("Object") && md.getSymbol().equals("nativehashCode");
472 LocalityBinding lb=new LocalityBinding(md, isatomic);
473 if (isnative&&isatomic) {
474 System.out.println("Don't call native methods in atomic blocks!"+currlb.getMethod());
477 if (runmethodset==null||!runmethodset.contains(md)) {
478 for(int i=0; i<fc.numArgs(); i++) {
479 TempDescriptor arg=fc.getArg(i);
480 lb.setGlobal(i,currtable.get(arg));
482 if (fc.getThis()!=null) {
483 Integer thistype=currtable.get(fc.getThis());
487 if(thistype.equals(STMCONFLICT))
488 throw new Error("Using type that can be either normal or scratch in context:\n"+currlb.getExplanation());
489 lb.setGlobalThis(thistype);
492 Integer thistype=currtable.get(fc.getThis());
493 if (!thistype.equals(NORMAL)) {
494 throw new Error("Called start on possible scratch object");
496 lb.setGlobal(0,currtable.get(fc.getThis()));
499 if (!discovered.containsKey(lb)) {
501 if (nodemd.getReturnType()==null||!nodemd.getReturnType().isPtr())
502 lb.setGlobalReturn(SCRATCH);
504 lb.setGlobalReturn(NORMAL);
506 lb.setGlobalReturn(STMEITHER);
508 lb.setParent(currlb);
510 discovered.put(lb, lb);
511 if (!classtolb.containsKey(lb.getMethod().getClassDesc()))
512 classtolb.put(lb.getMethod().getClassDesc(), new HashSet<LocalityBinding>());
513 classtolb.get(lb.getMethod().getClassDesc()).add(lb);
514 if (!methodtolb.containsKey(lb.getMethod()))
515 methodtolb.put(lb.getMethod(), new HashSet<LocalityBinding>());
516 methodtolb.get(lb.getMethod()).add(lb);
518 lb=discovered.get(lb);
519 Integer returnval=lb.getGlobalReturn();
520 currreturnval=mergestm(returnval, currreturnval);
521 if (!dependence.containsKey(lb))
522 dependence.put(lb, new HashSet<LocalityBinding>());
523 dependence.get(lb).add(currlb);
525 if (!calldep.containsKey(currlb))
526 calldep.put(currlb, new HashSet<LocalityBinding>());
527 calldep.get(currlb).add(lb);
529 if (fc.getReturnTemp()!=null) {
530 currtable.put(fc.getReturnTemp(), currreturnval);
534 void processFieldNodeSTM(LocalityBinding lb, FlatFieldNode ffn, Hashtable<TempDescriptor, Integer> currtable) {
535 Integer type=currtable.get(ffn.getSrc());
536 TempDescriptor dst=ffn.getDst();
537 if (type.equals(SCRATCH)) {
538 currtable.put(dst,SCRATCH);
539 } else if (type.equals(NORMAL)) {
540 if (ffn.getField().getType().isPrimitive()&&!ffn.getField().getType().isArray())
541 currtable.put(dst, SCRATCH); // primitives are local
543 currtable.put(dst, NORMAL);
544 } else if (type.equals(STMEITHER)) {
545 if (ffn.getField().getType().isPrimitive()&&!ffn.getField().getType().isArray())
546 currtable.put(dst, SCRATCH); // primitives are local
548 currtable.put(dst, STMEITHER);
549 } else if (type.equals(STMCONFLICT)) {
550 throw new Error("Access to object that could be either normal or scratch in context:\n"+ffn+" "+lb.getExplanation());
554 //need to handle primitives
555 void processSetFieldNodeSTM(LocalityBinding lb, FlatSetFieldNode fsfn, Hashtable<TempDescriptor, Integer> currtable) {
556 Integer srctype=currtable.get(fsfn.getSrc());
557 Integer dsttype=currtable.get(fsfn.getDst());
559 if (dsttype.equals(SCRATCH)) {
560 if (srctype.equals(SCRATCH) && fsfn.getField().getType().isPrimitive() && !fsfn.getField().getType().isArray())
562 if (!(srctype.equals(SCRATCH)||srctype.equals(STMEITHER)))
563 throw new Error("Writing possible normal reference to scratch object in context: \n"+lb.getExplanation());
564 } else if (dsttype.equals(NORMAL)) {
565 //okay to store primitives in global object
566 if (srctype.equals(SCRATCH) && fsfn.getField().getType().isPrimitive() && !fsfn.getField().getType().isArray())
568 if (!(srctype.equals(NORMAL)||srctype.equals(STMEITHER)))
569 throw new Error("Writing possible scratch reference to normal object in context:\n"+lb.getExplanation()+" for FlatFieldNode "+fsfn);
570 } else if (dsttype.equals(STMEITHER)) {
571 if (srctype.equals(STMCONFLICT))
572 throw new Error("Using reference that could be scratch or normal in context:\n"+lb.getExplanation());
573 } else if (dsttype.equals(STMCONFLICT)) {
574 throw new Error("Access to object that could be either scratch or normal in context:\n"+lb.getExplanation());
578 void processSetElementNodeSTM(LocalityBinding lb, FlatSetElementNode fsen, Hashtable<TempDescriptor, Integer> currtable) {
579 Integer srctype=currtable.get(fsen.getSrc());
580 Integer dsttype=currtable.get(fsen.getDst());
582 if (dsttype.equals(SCRATCH)) {
583 if (!(srctype.equals(SCRATCH)||srctype.equals(STMEITHER)))
584 throw new Error("Writing possible normal reference to scratch object in context:\n"+lb.getExplanation()+fsen);
585 } else if (dsttype.equals(NORMAL)) {
586 if (srctype.equals(SCRATCH) && fsen.getDst().getType().dereference().isPrimitive() && !fsen.getDst().getType().dereference().isArray())
588 if (!(srctype.equals(NORMAL)||srctype.equals(STMEITHER)))
589 throw new Error("Writing possible scratch reference to normal object in context:\n"+lb.getExplanation());
590 } else if (dsttype.equals(STMEITHER)) {
591 if (srctype.equals(STMCONFLICT))
592 throw new Error("Using reference that could be scratch or normal in context:\n"+lb.getExplanation());
593 } else if (dsttype.equals(STMCONFLICT)) {
594 throw new Error("Access to object that could be either normal or scratch in context:\n"+lb.getExplanation());
598 void processOpNodeSTM(FlatOpNode fon, Hashtable<TempDescriptor, Integer> currtable) {
599 /* Just propagate value */
600 Integer srcvalue=currtable.get(fon.getLeft());
602 if (srcvalue==null) {
603 if (!fon.getLeft().getType().isPtr()) {
606 throw new Error(fon.getLeft()+" is undefined!");
608 currtable.put(fon.getDest(), srcvalue);
611 void processCastNodeSTM(FlatCastNode fcn, Hashtable<TempDescriptor, Integer> currtable) {
612 currtable.put(fcn.getDst(), currtable.get(fcn.getSrc()));
615 void processReturnNodeSTM(LocalityBinding lb, FlatReturnNode frn, Hashtable<TempDescriptor, Integer> currtable) {
616 if(frn.getReturnTemp()!=null) {
617 Integer returntype=currtable.get(frn.getReturnTemp());
618 lb.setGlobalReturn(mergestm(returntype, lb.getGlobalReturn()));
622 void processLiteralNodeSTM(FlatLiteralNode fln, Hashtable<TempDescriptor, Integer> currtable) {
624 if (fln.getType().isNull())
625 currtable.put(fln.getDst(), STMEITHER);
626 else if (fln.getType().isPtr())
627 currtable.put(fln.getDst(), NORMAL);
629 currtable.put(fln.getDst(), SCRATCH);
632 void processElementNodeSTM(LocalityBinding lb, FlatElementNode fen, Hashtable<TempDescriptor, Integer> currtable) {
633 Integer type=currtable.get(fen.getSrc());
634 TempDescriptor dst=fen.getDst();
637 System.out.println(fen +" in "+lb+" may access undefined variable");
639 } else if (type.equals(SCRATCH)) {
640 currtable.put(dst,SCRATCH);
641 } else if (type.equals(NORMAL)) {
642 if(fen.getSrc().getType().dereference().isPrimitive()&&
643 !fen.getSrc().getType().dereference().isArray())
644 currtable.put(dst, SCRATCH);
646 currtable.put(dst, NORMAL);
647 } else if (type.equals(STMEITHER)) {
648 if(fen.getSrc().getType().dereference().isPrimitive()&&
649 !fen.getSrc().getType().dereference().isArray())
650 currtable.put(dst, SCRATCH);
652 currtable.put(dst, STMEITHER);
653 } else if (type.equals(STMCONFLICT)) {
654 throw new Error("Access to object that could be either global or local in context:\n"+lb.getExplanation());
658 private void computeLocalityBindings() {
659 lbmain=new LocalityBinding(typeutil.getMain(), false);
660 lbmain.setGlobalReturn(EITHER);
661 lbmain.setGlobal(0, LOCAL);
662 lbtovisit.add(lbmain);
663 discovered.put(lbmain, lbmain);
664 if (!classtolb.containsKey(lbmain.getMethod().getClassDesc()))
665 classtolb.put(lbmain.getMethod().getClassDesc(), new HashSet<LocalityBinding>());
666 classtolb.get(lbmain.getMethod().getClassDesc()).add(lbmain);
668 if (!methodtolb.containsKey(lbmain.getMethod()))
669 methodtolb.put(lbmain.getMethod(), new HashSet<LocalityBinding>());
670 methodtolb.get(lbmain.getMethod()).add(lbmain);
672 //Do this to force a virtual table number for the run method
673 lbrun=new LocalityBinding(typeutil.getRun(), false);
674 lbrun.setGlobalReturn(EITHER);
675 lbrun.setGlobalThis(GLOBAL);
676 lbtovisit.add(lbrun);
677 discovered.put(lbrun, lbrun);
678 if (!classtolb.containsKey(lbrun.getMethod().getClassDesc()))
679 classtolb.put(lbrun.getMethod().getClassDesc(), new HashSet<LocalityBinding>());
680 classtolb.get(lbrun.getMethod().getClassDesc()).add(lbrun);
682 if (!methodtolb.containsKey(lbrun.getMethod()))
683 methodtolb.put(lbrun.getMethod(), new HashSet<LocalityBinding>());
684 methodtolb.get(lbrun.getMethod()).add(lbrun);
686 while(!lbtovisit.empty()) {
687 LocalityBinding lb=(LocalityBinding) lbtovisit.pop();
688 Integer returnglobal=lb.getGlobalReturn();
689 MethodDescriptor md=lb.getMethod();
690 Hashtable<FlatNode,Hashtable<TempDescriptor, Integer>> temptable=new Hashtable<FlatNode,Hashtable<TempDescriptor, Integer>>();
691 Hashtable<FlatNode, Integer> atomictable=new Hashtable<FlatNode, Integer>();
694 computeCallsFlags(md, lb, temptable, atomictable);
696 System.out.println("Error in "+md+" context "+lb);
700 temptab.put(lb, temptable);
701 atomictab.put(lb, atomictable);
703 if (md.getReturnType()!=null&&!returnglobal.equals(lb.getGlobalReturn())) {
704 //return type is more precise now
705 //rerun everything that call us
706 lbtovisit.addAll(dependence.get(lb));
714 public void computeCallsFlags(MethodDescriptor md, LocalityBinding lb, Hashtable<FlatNode, Hashtable<TempDescriptor, Integer>> temptable, Hashtable<FlatNode, Integer> atomictable) {
715 FlatMethod fm=state.getMethodFlat(md);
716 HashSet<FlatNode> tovisit=new HashSet<FlatNode>();
717 tovisit.add(fm.getNext(0));
719 // Build table for initial node
720 Hashtable<TempDescriptor,Integer> table=new Hashtable<TempDescriptor,Integer>();
721 temptable.put(fm, table);
722 atomictable.put(fm, lb.isAtomic() ? 1 : 0);
723 int offset=md.isStatic() ? 0 : 1;
724 if (!md.isStatic()) {
725 table.put(fm.getParameter(0), lb.getGlobalThis());
727 for(int i=offset; i<fm.numParameters(); i++) {
728 TempDescriptor temp=fm.getParameter(i);
729 Integer b=lb.isGlobal(i-offset);
734 while(!tovisit.isEmpty()) {
735 FlatNode fn=tovisit.iterator().next();
737 Hashtable<TempDescriptor, Integer> currtable=new Hashtable<TempDescriptor, Integer>();
739 for(int i=0; i<fn.numPrev(); i++) {
740 FlatNode prevnode=fn.getPrev(i);
741 if (atomictable.containsKey(prevnode)) {
742 atomicstate=atomictable.get(prevnode).intValue();
744 if (!temptable.containsKey(prevnode))
746 Hashtable<TempDescriptor, Integer> prevtable=temptable.get(prevnode);
747 for(Iterator<TempDescriptor> tempit=prevtable.keySet().iterator(); tempit.hasNext();) {
748 TempDescriptor temp=tempit.next();
749 Integer tmpint=prevtable.get(temp);
750 Integer oldint=currtable.containsKey(temp) ? currtable.get(temp) : EITHER;
751 Integer newint=merge(tmpint, oldint);
752 currtable.put(temp, newint);
755 atomictable.put(fn, atomicstate);
758 case FKind.FlatAtomicEnterNode:
759 processAtomicEnterNode((FlatAtomicEnterNode)fn, atomictable);
764 case FKind.FlatAtomicExitNode:
765 processAtomicExitNode((FlatAtomicExitNode)fn, atomictable);
769 processCallNode(lb, (FlatCall)fn, currtable, isAtomic(atomictable, fn));
772 case FKind.FlatFieldNode:
773 processFieldNode(lb, (FlatFieldNode)fn, isAtomic(atomictable, fn), currtable);
776 case FKind.FlatSetFieldNode:
777 processSetFieldNode(lb, (FlatSetFieldNode)fn, isAtomic(atomictable,fn), currtable);
781 processNew(lb, (FlatNew)fn, isAtomic(atomictable, fn), currtable);
784 case FKind.FlatOpNode:
785 processOpNode((FlatOpNode)fn, currtable);
788 case FKind.FlatCastNode:
789 processCastNode((FlatCastNode)fn, currtable);
792 case FKind.FlatLiteralNode:
793 processLiteralNode((FlatLiteralNode)fn, currtable);
796 case FKind.FlatReturnNode:
797 processReturnNode(lb, (FlatReturnNode)fn, currtable);
800 case FKind.FlatSetElementNode:
801 processSetElementNode(lb, (FlatSetElementNode)fn, currtable, isAtomic(atomictable, fn));
804 case FKind.FlatElementNode:
805 processElementNode(lb, (FlatElementNode)fn, currtable, isAtomic(atomictable, fn));
808 case FKind.FlatInstanceOfNode:
809 case FKind.FlatCondBranch:
810 case FKind.FlatBackEdge:
813 case FKind.FlatPrefetchNode:
814 //No action needed for these
817 case FKind.FlatFlagActionNode:
818 case FKind.FlatCheckNode:
819 case FKind.FlatTagDeclaration:
820 throw new Error("Incompatible with tasks!");
822 case FKind.FlatMethod:
825 case FKind.FlatOffsetNode:
826 processOffsetNode((FlatOffsetNode)fn, currtable);
830 throw new Error("In finding fn.kind()= " + fn.kind());
832 Hashtable<TempDescriptor,Integer> oldtable=temptable.get(fn);
833 if (oldtable==null||!oldtable.equals(currtable)) {
834 // Update table for this node
835 temptable.put(fn, currtable);
836 for(int i=0; i<fn.numNext(); i++) {
837 tovisit.add(fn.getNext(i));
843 private static boolean isAtomic(Hashtable<FlatNode, Integer> atomictable, FlatNode fn) {
844 return atomictable.get(fn).intValue()>0;
847 private static Integer merge(Integer a, Integer b) {
848 if (a==null||a.equals(EITHER))
850 if (b==null||b.equals(EITHER))
857 void processCallNode(LocalityBinding currlb, FlatCall fc, Hashtable<TempDescriptor, Integer> currtable, boolean isatomic) {
858 MethodDescriptor nodemd=fc.getMethod();
860 Set runmethodset=null;
862 if (nodemd.isStatic()||nodemd.getReturnType()==null) {
863 methodset=new HashSet();
864 methodset.add(nodemd);
866 methodset=callgraph.getMethods(nodemd, fc.getThis().getType());
867 // Build start -> run link
868 if (nodemd.getClassDesc().getSymbol().equals(TypeUtil.ThreadClass)&&
869 nodemd.getSymbol().equals("start")&&!nodemd.getModifiers().isStatic()&&
870 nodemd.numParameters()==1&&nodemd.getParamType(0).isInt()) {
871 assert(nodemd.getModifiers().isNative());
873 MethodDescriptor runmd=null;
874 for(Iterator methodit=nodemd.getClassDesc().getMethodTable().getSet("run").iterator(); methodit.hasNext();) {
875 MethodDescriptor md=(MethodDescriptor) methodit.next();
876 if (md.numParameters()!=0||md.getModifiers().isStatic())
882 runmethodset=callgraph.getMethods(runmd,fc.getThis().getType());
883 methodset.addAll(runmethodset);
884 } else throw new Error("Can't find run method");
888 Integer currreturnval=EITHER; //Start off with the either value
889 for(Iterator methodit=methodset.iterator(); methodit.hasNext();) {
890 MethodDescriptor md=(MethodDescriptor) methodit.next();
892 boolean isnative=md.getModifiers().isNative();
893 boolean isjoin = md.getClassDesc().getSymbol().equals(TypeUtil.ThreadClass)&&!nodemd.getModifiers().isStatic()&&nodemd.numParameters()==0&&md.getSymbol().equals("join");
894 boolean isObjectgetType = md.getClassDesc().getSymbol().equals("Object") && md.getSymbol().equals("getType");
895 boolean isObjecthashCode = md.getClassDesc().getSymbol().equals("Object") && md.getSymbol().equals("nativehashCode");
897 LocalityBinding lb=new LocalityBinding(md, isatomic);
898 if (isnative&&isatomic) {
899 System.out.println("Don't call native methods in atomic blocks!"+currlb.getMethod());
901 if (runmethodset==null||!runmethodset.contains(md)) {
902 //Skip this part if it is a run method
903 for(int i=0; i<fc.numArgs(); i++) {
904 TempDescriptor arg=fc.getArg(i);
905 if(isnative&&(currtable.get(arg).equals(GLOBAL)||
906 currtable.get(arg).equals(CONFLICT))&& !(nodemd.getSymbol().equals("rangePrefetch"))) {
907 throw new Error("Potential call to native method "+md+" with global parameter:\n"+currlb.getExplanation());
909 lb.setGlobal(i,currtable.get(arg));
913 if (fc.getThis()!=null) {
914 Integer thistype=currtable.get(fc.getThis());
918 if(runmethodset!=null&&runmethodset.contains(md)&&thistype.equals(LOCAL))
919 throw new Error("Starting thread on local object not allowed in context:\n"+currlb.getExplanation());
920 if(isjoin&&thistype.equals(LOCAL))
921 throw new Error("Joining thread on local object not allowed in context:\n"+currlb.getExplanation());
922 if(thistype.equals(CONFLICT))
923 throw new Error("Using type that can be either local or global in context:\n"+currlb.getExplanation());
924 if(runmethodset==null&&thistype.equals(GLOBAL)&&!isatomic && !isjoin)
925 throw new Error("Using global object outside of transaction in context:\n"+currlb.getExplanation());
926 if (runmethodset==null&&isnative&&thistype.equals(GLOBAL) && !isjoin && !isObjectgetType && !isObjecthashCode)
927 throw new Error("Potential call to native method "+md+" on global objects:\n"+currlb.getExplanation());
928 lb.setGlobalThis(thistype);
931 if (!discovered.containsKey(lb)) {
933 lb.setGlobalReturn(LOCAL);
935 lb.setGlobalReturn(EITHER);
936 lb.setParent(currlb);
938 discovered.put(lb, lb);
939 if (!classtolb.containsKey(lb.getMethod().getClassDesc()))
940 classtolb.put(lb.getMethod().getClassDesc(), new HashSet<LocalityBinding>());
941 classtolb.get(lb.getMethod().getClassDesc()).add(lb);
942 if (!methodtolb.containsKey(lb.getMethod()))
943 methodtolb.put(lb.getMethod(), new HashSet<LocalityBinding>());
944 methodtolb.get(lb.getMethod()).add(lb);
946 lb=discovered.get(lb);
947 Integer returnval=lb.getGlobalReturn();
948 currreturnval=merge(returnval, currreturnval);
949 if (!dependence.containsKey(lb))
950 dependence.put(lb, new HashSet<LocalityBinding>());
951 dependence.get(lb).add(currlb);
953 if (!calldep.containsKey(currlb))
954 calldep.put(currlb, new HashSet<LocalityBinding>());
955 calldep.get(currlb).add(lb);
957 if (fc.getReturnTemp()!=null) {
958 currtable.put(fc.getReturnTemp(), currreturnval);
962 void processFieldNode(LocalityBinding lb, FlatFieldNode ffn, boolean transaction, Hashtable<TempDescriptor, Integer> currtable) {
963 Integer type=currtable.get(ffn.getSrc());
964 TempDescriptor dst=ffn.getDst();
965 if (type.equals(LOCAL)) {
966 if (ffn.getField().isGlobal())
967 currtable.put(dst,GLOBAL);
969 currtable.put(dst,LOCAL);
970 } else if (type.equals(GLOBAL)) {
972 throw new Error("Global access outside of a transaction in context:\n"+lb.getExplanation());
973 if (ffn.getField().getType().isPrimitive()&&!ffn.getField().getType().isArray())
974 currtable.put(dst, LOCAL); // primitives are local
976 currtable.put(dst, GLOBAL);
977 } else if (type.equals(EITHER)) {
978 if (ffn.getField().getType().isPrimitive()&&!ffn.getField().getType().isArray())
979 currtable.put(dst, LOCAL); // primitives are local
980 else if (ffn.getField().isGlobal())
981 currtable.put(dst, GLOBAL);
983 currtable.put(dst, EITHER);
984 } else if (type.equals(CONFLICT)) {
985 throw new Error("Access to object that could be either global or local in context:\n"+lb.getExplanation());
989 //need to handle primitives
990 void processSetFieldNode(LocalityBinding lb, FlatSetFieldNode fsfn, boolean transaction, Hashtable<TempDescriptor, Integer> currtable) {
991 Integer srctype=currtable.get(fsfn.getSrc());
992 Integer dsttype=currtable.get(fsfn.getDst());
994 if (dsttype.equals(LOCAL)) {
995 if (fsfn.getField().isGlobal()) {
996 if (!(srctype.equals(GLOBAL)||srctype.equals(EITHER)))
997 throw new Error("Writing possible local reference to global field in context: \n"+lb.getExplanation());
999 if (!(srctype.equals(LOCAL)||srctype.equals(EITHER)))
1000 throw new Error("Writing possible global reference to local object in context: \n"+lb.getExplanation());
1002 } else if (dsttype.equals(GLOBAL)) {
1004 throw new Error("Global access outside of a transaction in context:\n"+lb.getExplanation());
1005 //okay to store primitives in global object
1006 if (srctype.equals(LOCAL) && fsfn.getField().getType().isPrimitive() && !fsfn.getField().getType().isArray())
1008 if (!(srctype.equals(GLOBAL)||srctype.equals(EITHER)))
1009 throw new Error("Writing possible local reference to global object in context:\n"+lb.getExplanation()+" for FlatFieldNode "+fsfn);
1010 } else if (dsttype.equals(EITHER)) {
1011 if (srctype.equals(CONFLICT))
1012 throw new Error("Using reference that could be local or global in context:\n"+lb.getExplanation());
1013 } else if (dsttype.equals(CONFLICT)) {
1014 throw new Error("Access to object that could be either global or local in context:\n"+lb.getExplanation());
1018 void processNew(LocalityBinding lb, FlatNew fn, boolean transaction, Hashtable<TempDescriptor, Integer> currtable) {
1019 if (fn.isGlobal()&&!transaction) {
1020 throw new Error("Allocating global object outside of transaction in context:"+lb.getExplanation());
1023 currtable.put(fn.getDst(), GLOBAL);
1025 currtable.put(fn.getDst(), LOCAL);
1028 void processOpNode(FlatOpNode fon, Hashtable<TempDescriptor, Integer> currtable) {
1029 /* Just propagate value */
1030 Integer srcvalue=currtable.get(fon.getLeft());
1032 if (srcvalue==null) {
1033 if (!fon.getLeft().getType().isPtr()) {
1036 throw new Error(fon.getLeft()+" is undefined!");
1038 currtable.put(fon.getDest(), srcvalue);
1041 void processCastNode(FlatCastNode fcn, Hashtable<TempDescriptor, Integer> currtable) {
1042 currtable.put(fcn.getDst(), currtable.get(fcn.getSrc()));
1045 void processLiteralNode(FlatLiteralNode fln, Hashtable<TempDescriptor, Integer> currtable) {
1047 if (fln.getValue()==null)
1048 currtable.put(fln.getDst(), EITHER);
1050 currtable.put(fln.getDst(), LOCAL);
1053 void processOffsetNode(FlatOffsetNode fln, Hashtable<TempDescriptor, Integer> currtable) {
1054 currtable.put(fln.getDst(), LOCAL);
1057 void processReturnNode(LocalityBinding lb, FlatReturnNode frn, Hashtable<TempDescriptor, Integer> currtable) {
1058 if(frn.getReturnTemp()!=null) {
1059 Integer returntype=currtable.get(frn.getReturnTemp());
1060 lb.setGlobalReturn(merge(returntype, lb.getGlobalReturn()));
1064 void processSetElementNode(LocalityBinding lb, FlatSetElementNode fsen, Hashtable<TempDescriptor, Integer> currtable, boolean isatomic) {
1065 Integer srctype=currtable.get(fsen.getSrc());
1066 Integer dsttype=currtable.get(fsen.getDst());
1068 if (dsttype.equals(LOCAL)) {
1069 if (!(srctype.equals(LOCAL)||srctype.equals(EITHER)))
1070 throw new Error("Writing possible global reference to local object in context:\n"+lb.getExplanation()+fsen);
1071 } else if (dsttype.equals(GLOBAL)) {
1072 if (srctype.equals(LOCAL) && fsen.getDst().getType().dereference().isPrimitive() && !fsen.getDst().getType().dereference().isArray())
1074 if (!(srctype.equals(GLOBAL)||srctype.equals(EITHER)))
1075 throw new Error("Writing possible local reference to global object in context:\n"+lb.getExplanation());
1077 throw new Error("Global access outside of a transaction in context:\n"+lb.getExplanation());
1078 } else if (dsttype.equals(EITHER)) {
1079 if (srctype.equals(CONFLICT))
1080 throw new Error("Using reference that could be local or global in context:\n"+lb.getExplanation());
1081 } else if (dsttype.equals(CONFLICT)) {
1082 throw new Error("Access to object that could be either global or local in context:\n"+lb.getExplanation());
1086 void processElementNode(LocalityBinding lb, FlatElementNode fen, Hashtable<TempDescriptor, Integer> currtable, boolean isatomic) {
1087 Integer type=currtable.get(fen.getSrc());
1088 TempDescriptor dst=fen.getDst();
1089 if (type.equals(LOCAL)) {
1090 currtable.put(dst,LOCAL);
1091 } else if (type.equals(GLOBAL)) {
1093 throw new Error("Global access outside of a transaction in context:\n"+lb.getExplanation());
1094 if(fen.getSrc().getType().dereference().isPrimitive()&&
1095 !fen.getSrc().getType().dereference().isArray())
1096 currtable.put(dst, LOCAL);
1098 currtable.put(dst, GLOBAL);
1099 } else if (type.equals(EITHER)) {
1100 if(fen.getSrc().getType().dereference().isPrimitive()&&
1101 !fen.getSrc().getType().dereference().isArray())
1102 currtable.put(dst, LOCAL);
1104 currtable.put(dst, EITHER);
1105 } else if (type.equals(CONFLICT)) {
1106 throw new Error("Access to object that could be either global or local in context:\n"+lb.getExplanation());
1110 void processAtomicEnterNode(FlatAtomicEnterNode fen, Hashtable<FlatNode, Integer> atomictable) {
1111 int atomic=atomictable.get(fen).intValue();
1112 atomictable.put(fen, new Integer(atomic+1));
1115 void processAtomicExitNode(FlatAtomicExitNode fen, Hashtable<FlatNode, Integer> atomictable) {
1116 int atomic=atomictable.get(fen).intValue();
1117 atomictable.put(fen, new Integer(atomic-1));
1120 Hashtable<FlatNode, Set<TempDescriptor>> computeLiveTemps(FlatMethod fm) {
1121 Hashtable<FlatNode, Set<TempDescriptor>> nodetotemps=new Hashtable<FlatNode, Set<TempDescriptor>>();
1123 Set<FlatNode> toprocess=fm.getNodeSet();
1125 while(!toprocess.isEmpty()) {
1126 FlatNode fn=toprocess.iterator().next();
1127 toprocess.remove(fn);
1129 List<TempDescriptor> reads=Arrays.asList(fn.readsTemps());
1130 List<TempDescriptor> writes=Arrays.asList(fn.writesTemps());
1132 HashSet<TempDescriptor> tempset=new HashSet<TempDescriptor>();
1133 for(int i=0; i<fn.numNext(); i++) {
1134 FlatNode fnnext=fn.getNext(i);
1135 if (nodetotemps.containsKey(fnnext))
1136 tempset.addAll(nodetotemps.get(fnnext));
1138 tempset.removeAll(writes);
1139 tempset.addAll(reads);
1140 if (!nodetotemps.containsKey(fn)||
1141 !nodetotemps.get(fn).equals(tempset)) {
1142 nodetotemps.put(fn, tempset);
1143 for(int i=0; i<fn.numPrev(); i++)
1144 toprocess.add(fn.getPrev(i));
1150 private void computeTempstoSave() {
1151 for(Iterator<LocalityBinding> lbit=getLocalityBindings().iterator(); lbit.hasNext();) {
1152 LocalityBinding lb=lbit.next();
1153 computeTempstoSave(lb);
1157 /* Need to checkpoint all temps that could be read from along any
1158 * path that are either:
1159 1) Written to by any assignment inside the transaction
1160 2) Read from a global temp.
1162 Generate tempstosave map from
1163 localitybinding->flatatomicenternode->Set<TempDescriptors>
1166 private void computeTempstoSave(LocalityBinding lb) {
1169 Hashtable<FlatNode, Integer> atomictab=getAtomic(lb);
1170 Hashtable<FlatNode, Hashtable<TempDescriptor, Integer>> temptab=getNodeTempInfo(lb);
1171 MethodDescriptor md=lb.getMethod();
1172 FlatMethod fm=state.getMethodFlat(md);
1173 Hashtable<FlatNode, Set<TempDescriptor>> nodetotemps=computeLiveTemps(fm);
1174 Hashtable<FlatAtomicEnterNode, Set<TempDescriptor>> nodetosavetemps=new Hashtable<FlatAtomicEnterNode, Set<TempDescriptor>>();
1175 tempstosave.put(lb, nodetosavetemps);
1176 Hashtable<FlatNode, FlatAtomicEnterNode> nodemap=new Hashtable<FlatNode, FlatAtomicEnterNode>();
1177 HashSet<FlatNode> toprocess=new HashSet<FlatNode>();
1178 HashSet<FlatNode> discovered=new HashSet<FlatNode>();
1181 while(!toprocess.isEmpty()) {
1182 FlatNode fn=toprocess.iterator().next();
1183 toprocess.remove(fn);
1184 boolean isatomic=atomictab.get(fn).intValue()>0;
1186 atomictab.get(fn.getPrev(0)).intValue()==0) {
1187 assert(fn.getPrev(0).kind()==FKind.FlatAtomicEnterNode);
1188 nodemap.put(fn, (FlatAtomicEnterNode)fn);
1189 nodetosavetemps.put((FlatAtomicEnterNode)fn, new HashSet<TempDescriptor>());
1190 } else if (isatomic) {
1191 FlatAtomicEnterNode atomicnode=nodemap.get(fn);
1192 Set<TempDescriptor> livetemps=nodetotemps.get(fn);
1193 List<TempDescriptor> reads=Arrays.asList(fn.readsTemps());
1194 List<TempDescriptor> writes=Arrays.asList(fn.readsTemps());
1196 for(Iterator<TempDescriptor> tempit=livetemps.iterator(); tempit.hasNext();) {
1197 TempDescriptor tmp=tempit.next();
1198 if (writes.contains(tmp)) {
1199 nodetosavetemps.get(atomicnode).add(tmp);
1200 } else if (state.DSM) {
1201 if (reads.contains(tmp)&&temptab.get(fn).get(tmp)==GLOBAL) {
1202 nodetosavetemps.get(atomicnode).add(tmp);
1204 } else if (state.SINGLETM) {
1205 if (reads.contains(tmp)&&tmp.getType().isPtr()&&temptab.get(fn).get(tmp)==NORMAL) {
1206 nodetosavetemps.get(atomicnode).add(tmp);
1211 for(int i=0; i<fn.numNext(); i++) {
1212 FlatNode fnnext=fn.getNext(i);
1213 if (!discovered.contains(fnnext)) {
1214 discovered.add(fnnext);
1215 toprocess.add(fnnext);
1217 nodemap.put(fnnext, nodemap.get(fn));