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);
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());
405 Hashtable<TempDescriptor,Integer> oldtable=temptable.get(fn);
406 if (oldtable==null||!oldtable.equals(currtable)) {
407 // Update table for this node
408 temptable.put(fn, currtable);
409 for(int i=0; i<fn.numNext(); i++) {
410 tovisit.add(fn.getNext(i));
416 void processNewSTM(LocalityBinding lb, FlatNew fn, Hashtable<TempDescriptor, Integer> currtable) {
418 currtable.put(fn.getDst(), SCRATCH);
420 currtable.put(fn.getDst(), NORMAL);
423 void processCallNodeSTM(LocalityBinding currlb, FlatCall fc, boolean isatomic, Hashtable<TempDescriptor, Integer> currtable) {
424 MethodDescriptor nodemd=fc.getMethod();
426 Set runmethodset=null;
428 if (nodemd.isStatic()||nodemd.getReturnType()==null) {
429 methodset=new HashSet();
430 methodset.add(nodemd);
432 methodset=callgraph.getMethods(nodemd, fc.getThis().getType());
433 // Build start -> run link
434 if (nodemd.getClassDesc().getSymbol().equals(TypeUtil.ThreadClass)&&
435 nodemd.getSymbol().equals("start")&&!nodemd.getModifiers().isStatic()&&
436 nodemd.numParameters()==0) {
437 assert(nodemd.getModifiers().isNative());
439 MethodDescriptor runmd=null;
440 for(Iterator methodit=nodemd.getClassDesc().getMethodTable().getSet("staticStart").iterator(); methodit.hasNext();) {
441 MethodDescriptor md=(MethodDescriptor) methodit.next();
442 if (md.numParameters()!=1||!md.getModifiers().isStatic()||!md.getParamType(0).getSymbol().equals(TypeUtil.ThreadClass))
448 runmethodset=callgraph.getMethods(runmd,fc.getThis().getType());
449 methodset.addAll(runmethodset);
450 } else throw new Error("Can't find run method");
454 Integer currreturnval=STMEITHER; //Start off with the either value
455 for(Iterator methodit=methodset.iterator(); methodit.hasNext();) {
456 MethodDescriptor md=(MethodDescriptor) methodit.next();
458 boolean isnative=md.getModifiers().isNative();
459 boolean isjoin = md.getClassDesc().getSymbol().equals(TypeUtil.ThreadClass)&&!nodemd.getModifiers().isStatic()&&nodemd.numParameters()==0&&md.getSymbol().equals("join");
460 boolean isObjectgetType = md.getClassDesc().getSymbol().equals("Object") && md.getSymbol().equals("getType");
461 boolean isObjecthashCode = md.getClassDesc().getSymbol().equals("Object") && md.getSymbol().equals("nativehashCode");
463 LocalityBinding lb=new LocalityBinding(md, isatomic);
464 if (isnative&&isatomic) {
465 System.out.println("Don't call native methods in atomic blocks!"+currlb.getMethod());
468 if (runmethodset==null||!runmethodset.contains(md)) {
469 for(int i=0; i<fc.numArgs(); i++) {
470 TempDescriptor arg=fc.getArg(i);
471 lb.setGlobal(i,currtable.get(arg));
473 if (fc.getThis()!=null) {
474 Integer thistype=currtable.get(fc.getThis());
478 if(thistype.equals(STMCONFLICT))
479 throw new Error("Using type that can be either normal or scratch in context:\n"+currlb.getExplanation());
480 lb.setGlobalThis(thistype);
483 Integer thistype=currtable.get(fc.getThis());
484 if (!thistype.equals(NORMAL)) {
485 throw new Error("Called start on possible scratch object");
487 lb.setGlobal(0,currtable.get(fc.getThis()));
490 if (!discovered.containsKey(lb)) {
492 if (nodemd.getReturnType()==null||!nodemd.getReturnType().isPtr())
493 lb.setGlobalReturn(SCRATCH);
495 lb.setGlobalReturn(NORMAL);
497 lb.setGlobalReturn(STMEITHER);
499 lb.setParent(currlb);
501 discovered.put(lb, lb);
502 if (!classtolb.containsKey(lb.getMethod().getClassDesc()))
503 classtolb.put(lb.getMethod().getClassDesc(), new HashSet<LocalityBinding>());
504 classtolb.get(lb.getMethod().getClassDesc()).add(lb);
505 if (!methodtolb.containsKey(lb.getMethod()))
506 methodtolb.put(lb.getMethod(), new HashSet<LocalityBinding>());
507 methodtolb.get(lb.getMethod()).add(lb);
509 lb=discovered.get(lb);
510 Integer returnval=lb.getGlobalReturn();
511 currreturnval=mergestm(returnval, currreturnval);
512 if (!dependence.containsKey(lb))
513 dependence.put(lb, new HashSet<LocalityBinding>());
514 dependence.get(lb).add(currlb);
516 if (!calldep.containsKey(currlb))
517 calldep.put(currlb, new HashSet<LocalityBinding>());
518 calldep.get(currlb).add(lb);
520 if (fc.getReturnTemp()!=null) {
521 currtable.put(fc.getReturnTemp(), currreturnval);
525 void processFieldNodeSTM(LocalityBinding lb, FlatFieldNode ffn, Hashtable<TempDescriptor, Integer> currtable) {
526 Integer type=currtable.get(ffn.getSrc());
527 TempDescriptor dst=ffn.getDst();
528 if (type.equals(SCRATCH)) {
529 currtable.put(dst,SCRATCH);
530 } else if (type.equals(NORMAL)) {
531 if (ffn.getField().getType().isPrimitive()&&!ffn.getField().getType().isArray())
532 currtable.put(dst, SCRATCH); // primitives are local
534 currtable.put(dst, NORMAL);
535 } else if (type.equals(STMEITHER)) {
536 if (ffn.getField().getType().isPrimitive()&&!ffn.getField().getType().isArray())
537 currtable.put(dst, SCRATCH); // primitives are local
539 currtable.put(dst, STMEITHER);
540 } else if (type.equals(STMCONFLICT)) {
541 throw new Error("Access to object that could be either normal or scratch in context:\n"+ffn+" "+lb.getExplanation());
545 //need to handle primitives
546 void processSetFieldNodeSTM(LocalityBinding lb, FlatSetFieldNode fsfn, Hashtable<TempDescriptor, Integer> currtable) {
547 Integer srctype=currtable.get(fsfn.getSrc());
548 Integer dsttype=currtable.get(fsfn.getDst());
550 if (dsttype.equals(SCRATCH)) {
551 if (srctype.equals(SCRATCH) && fsfn.getField().getType().isPrimitive() && !fsfn.getField().getType().isArray())
553 if (!(srctype.equals(SCRATCH)||srctype.equals(STMEITHER)))
554 throw new Error("Writing possible normal reference to scratch object in context: \n"+lb.getExplanation());
555 } else if (dsttype.equals(NORMAL)) {
556 //okay to store primitives in global object
557 if (srctype.equals(SCRATCH) && fsfn.getField().getType().isPrimitive() && !fsfn.getField().getType().isArray())
559 if (!(srctype.equals(NORMAL)||srctype.equals(STMEITHER)))
560 throw new Error("Writing possible scratch reference to normal object in context:\n"+lb.getExplanation()+" for FlatFieldNode "+fsfn);
561 } else if (dsttype.equals(STMEITHER)) {
562 if (srctype.equals(STMCONFLICT))
563 throw new Error("Using reference that could be scratch or normal in context:\n"+lb.getExplanation());
564 } else if (dsttype.equals(STMCONFLICT)) {
565 throw new Error("Access to object that could be either scratch or normal in context:\n"+lb.getExplanation());
569 void processSetElementNodeSTM(LocalityBinding lb, FlatSetElementNode fsen, Hashtable<TempDescriptor, Integer> currtable) {
570 Integer srctype=currtable.get(fsen.getSrc());
571 Integer dsttype=currtable.get(fsen.getDst());
573 if (dsttype.equals(SCRATCH)) {
574 if (!(srctype.equals(SCRATCH)||srctype.equals(STMEITHER)))
575 throw new Error("Writing possible normal reference to scratch object in context:\n"+lb.getExplanation()+fsen);
576 } else if (dsttype.equals(NORMAL)) {
577 if (srctype.equals(SCRATCH) && fsen.getDst().getType().dereference().isPrimitive() && !fsen.getDst().getType().dereference().isArray())
579 if (!(srctype.equals(NORMAL)||srctype.equals(STMEITHER)))
580 throw new Error("Writing possible scratch reference to normal object in context:\n"+lb.getExplanation());
581 } else if (dsttype.equals(STMEITHER)) {
582 if (srctype.equals(STMCONFLICT))
583 throw new Error("Using reference that could be scratch or normal in context:\n"+lb.getExplanation());
584 } else if (dsttype.equals(STMCONFLICT)) {
585 throw new Error("Access to object that could be either normal or scratch in context:\n"+lb.getExplanation());
589 void processOpNodeSTM(FlatOpNode fon, Hashtable<TempDescriptor, Integer> currtable) {
590 /* Just propagate value */
591 Integer srcvalue=currtable.get(fon.getLeft());
593 if (srcvalue==null) {
594 if (!fon.getLeft().getType().isPtr()) {
597 throw new Error(fon.getLeft()+" is undefined!");
599 currtable.put(fon.getDest(), srcvalue);
602 void processCastNodeSTM(FlatCastNode fcn, Hashtable<TempDescriptor, Integer> currtable) {
603 currtable.put(fcn.getDst(), currtable.get(fcn.getSrc()));
606 void processReturnNodeSTM(LocalityBinding lb, FlatReturnNode frn, Hashtable<TempDescriptor, Integer> currtable) {
607 if(frn.getReturnTemp()!=null) {
608 Integer returntype=currtable.get(frn.getReturnTemp());
609 lb.setGlobalReturn(mergestm(returntype, lb.getGlobalReturn()));
613 void processLiteralNodeSTM(FlatLiteralNode fln, Hashtable<TempDescriptor, Integer> currtable) {
615 if (fln.getType().isNull())
616 currtable.put(fln.getDst(), STMEITHER);
617 else if (fln.getType().isPtr())
618 currtable.put(fln.getDst(), NORMAL);
620 currtable.put(fln.getDst(), SCRATCH);
623 void processElementNodeSTM(LocalityBinding lb, FlatElementNode fen, Hashtable<TempDescriptor, Integer> currtable) {
624 Integer type=currtable.get(fen.getSrc());
625 TempDescriptor dst=fen.getDst();
626 if (type.equals(SCRATCH)) {
627 currtable.put(dst,SCRATCH);
628 } else if (type.equals(NORMAL)) {
629 if(fen.getSrc().getType().dereference().isPrimitive()&&
630 !fen.getSrc().getType().dereference().isArray())
631 currtable.put(dst, SCRATCH);
633 currtable.put(dst, NORMAL);
634 } else if (type.equals(STMEITHER)) {
635 if(fen.getSrc().getType().dereference().isPrimitive()&&
636 !fen.getSrc().getType().dereference().isArray())
637 currtable.put(dst, SCRATCH);
639 currtable.put(dst, STMEITHER);
640 } else if (type.equals(STMCONFLICT)) {
641 throw new Error("Access to object that could be either global or local in context:\n"+lb.getExplanation());
645 private void computeLocalityBindings() {
646 lbmain=new LocalityBinding(typeutil.getMain(), false);
647 lbmain.setGlobalReturn(EITHER);
648 lbmain.setGlobal(0, LOCAL);
649 lbtovisit.add(lbmain);
650 discovered.put(lbmain, lbmain);
651 if (!classtolb.containsKey(lbmain.getMethod().getClassDesc()))
652 classtolb.put(lbmain.getMethod().getClassDesc(), new HashSet<LocalityBinding>());
653 classtolb.get(lbmain.getMethod().getClassDesc()).add(lbmain);
655 if (!methodtolb.containsKey(lbmain.getMethod()))
656 methodtolb.put(lbmain.getMethod(), new HashSet<LocalityBinding>());
657 methodtolb.get(lbmain.getMethod()).add(lbmain);
659 //Do this to force a virtual table number for the run method
660 lbrun=new LocalityBinding(typeutil.getRun(), false);
661 lbrun.setGlobalReturn(EITHER);
662 lbrun.setGlobalThis(GLOBAL);
663 lbtovisit.add(lbrun);
664 discovered.put(lbrun, lbrun);
665 if (!classtolb.containsKey(lbrun.getMethod().getClassDesc()))
666 classtolb.put(lbrun.getMethod().getClassDesc(), new HashSet<LocalityBinding>());
667 classtolb.get(lbrun.getMethod().getClassDesc()).add(lbrun);
669 if (!methodtolb.containsKey(lbrun.getMethod()))
670 methodtolb.put(lbrun.getMethod(), new HashSet<LocalityBinding>());
671 methodtolb.get(lbrun.getMethod()).add(lbrun);
673 while(!lbtovisit.empty()) {
674 LocalityBinding lb=(LocalityBinding) lbtovisit.pop();
675 Integer returnglobal=lb.getGlobalReturn();
676 MethodDescriptor md=lb.getMethod();
677 Hashtable<FlatNode,Hashtable<TempDescriptor, Integer>> temptable=new Hashtable<FlatNode,Hashtable<TempDescriptor, Integer>>();
678 Hashtable<FlatNode, Integer> atomictable=new Hashtable<FlatNode, Integer>();
681 computeCallsFlags(md, lb, temptable, atomictable);
683 System.out.println("Error in "+md+" context "+lb);
687 temptab.put(lb, temptable);
688 atomictab.put(lb, atomictable);
690 if (md.getReturnType()!=null&&!returnglobal.equals(lb.getGlobalReturn())) {
691 //return type is more precise now
692 //rerun everything that call us
693 lbtovisit.addAll(dependence.get(lb));
701 public void computeCallsFlags(MethodDescriptor md, LocalityBinding lb, Hashtable<FlatNode, Hashtable<TempDescriptor, Integer>> temptable, Hashtable<FlatNode, Integer> atomictable) {
702 FlatMethod fm=state.getMethodFlat(md);
703 HashSet<FlatNode> tovisit=new HashSet<FlatNode>();
704 tovisit.add(fm.getNext(0));
706 // Build table for initial node
707 Hashtable<TempDescriptor,Integer> table=new Hashtable<TempDescriptor,Integer>();
708 temptable.put(fm, table);
709 atomictable.put(fm, lb.isAtomic() ? 1 : 0);
710 int offset=md.isStatic() ? 0 : 1;
711 if (!md.isStatic()) {
712 table.put(fm.getParameter(0), lb.getGlobalThis());
714 for(int i=offset; i<fm.numParameters(); i++) {
715 TempDescriptor temp=fm.getParameter(i);
716 Integer b=lb.isGlobal(i-offset);
721 while(!tovisit.isEmpty()) {
722 FlatNode fn=tovisit.iterator().next();
724 Hashtable<TempDescriptor, Integer> currtable=new Hashtable<TempDescriptor, Integer>();
726 for(int i=0; i<fn.numPrev(); i++) {
727 FlatNode prevnode=fn.getPrev(i);
728 if (atomictable.containsKey(prevnode)) {
729 atomicstate=atomictable.get(prevnode).intValue();
731 if (!temptable.containsKey(prevnode))
733 Hashtable<TempDescriptor, Integer> prevtable=temptable.get(prevnode);
734 for(Iterator<TempDescriptor> tempit=prevtable.keySet().iterator(); tempit.hasNext();) {
735 TempDescriptor temp=tempit.next();
736 Integer tmpint=prevtable.get(temp);
737 Integer oldint=currtable.containsKey(temp) ? currtable.get(temp) : EITHER;
738 Integer newint=merge(tmpint, oldint);
739 currtable.put(temp, newint);
742 atomictable.put(fn, atomicstate);
745 case FKind.FlatAtomicEnterNode:
746 processAtomicEnterNode((FlatAtomicEnterNode)fn, atomictable);
751 case FKind.FlatAtomicExitNode:
752 processAtomicExitNode((FlatAtomicExitNode)fn, atomictable);
756 processCallNode(lb, (FlatCall)fn, currtable, isAtomic(atomictable, fn));
759 case FKind.FlatFieldNode:
760 processFieldNode(lb, (FlatFieldNode)fn, isAtomic(atomictable, fn), currtable);
763 case FKind.FlatSetFieldNode:
764 processSetFieldNode(lb, (FlatSetFieldNode)fn, isAtomic(atomictable,fn), currtable);
768 processNew(lb, (FlatNew)fn, isAtomic(atomictable, fn), currtable);
771 case FKind.FlatOpNode:
772 processOpNode((FlatOpNode)fn, currtable);
775 case FKind.FlatCastNode:
776 processCastNode((FlatCastNode)fn, currtable);
779 case FKind.FlatLiteralNode:
780 processLiteralNode((FlatLiteralNode)fn, currtable);
783 case FKind.FlatReturnNode:
784 processReturnNode(lb, (FlatReturnNode)fn, currtable);
787 case FKind.FlatSetElementNode:
788 processSetElementNode(lb, (FlatSetElementNode)fn, currtable, isAtomic(atomictable, fn));
791 case FKind.FlatElementNode:
792 processElementNode(lb, (FlatElementNode)fn, currtable, isAtomic(atomictable, fn));
795 case FKind.FlatInstanceOfNode:
796 case FKind.FlatCondBranch:
797 case FKind.FlatBackEdge:
800 case FKind.FlatPrefetchNode:
801 //No action needed for these
804 case FKind.FlatFlagActionNode:
805 case FKind.FlatCheckNode:
806 case FKind.FlatTagDeclaration:
807 throw new Error("Incompatible with tasks!");
809 case FKind.FlatMethod:
812 case FKind.FlatOffsetNode:
813 processOffsetNode((FlatOffsetNode)fn, currtable);
817 throw new Error("In finding fn.kind()= " + fn.kind());
819 Hashtable<TempDescriptor,Integer> oldtable=temptable.get(fn);
820 if (oldtable==null||!oldtable.equals(currtable)) {
821 // Update table for this node
822 temptable.put(fn, currtable);
823 for(int i=0; i<fn.numNext(); i++) {
824 tovisit.add(fn.getNext(i));
830 private static boolean isAtomic(Hashtable<FlatNode, Integer> atomictable, FlatNode fn) {
831 return atomictable.get(fn).intValue()>0;
834 private static Integer merge(Integer a, Integer b) {
835 if (a==null||a.equals(EITHER))
837 if (b==null||b.equals(EITHER))
844 void processCallNode(LocalityBinding currlb, FlatCall fc, Hashtable<TempDescriptor, Integer> currtable, boolean isatomic) {
845 MethodDescriptor nodemd=fc.getMethod();
847 Set runmethodset=null;
849 if (nodemd.isStatic()||nodemd.getReturnType()==null) {
850 methodset=new HashSet();
851 methodset.add(nodemd);
853 methodset=callgraph.getMethods(nodemd, fc.getThis().getType());
854 // Build start -> run link
855 if (nodemd.getClassDesc().getSymbol().equals(TypeUtil.ThreadClass)&&
856 nodemd.getSymbol().equals("start")&&!nodemd.getModifiers().isStatic()&&
857 nodemd.numParameters()==1&&nodemd.getParamType(0).isInt()) {
858 assert(nodemd.getModifiers().isNative());
860 MethodDescriptor runmd=null;
861 for(Iterator methodit=nodemd.getClassDesc().getMethodTable().getSet("run").iterator(); methodit.hasNext();) {
862 MethodDescriptor md=(MethodDescriptor) methodit.next();
863 if (md.numParameters()!=0||md.getModifiers().isStatic())
869 runmethodset=callgraph.getMethods(runmd,fc.getThis().getType());
870 methodset.addAll(runmethodset);
871 } else throw new Error("Can't find run method");
875 Integer currreturnval=EITHER; //Start off with the either value
876 for(Iterator methodit=methodset.iterator(); methodit.hasNext();) {
877 MethodDescriptor md=(MethodDescriptor) methodit.next();
879 boolean isnative=md.getModifiers().isNative();
880 boolean isjoin = md.getClassDesc().getSymbol().equals(TypeUtil.ThreadClass)&&!nodemd.getModifiers().isStatic()&&nodemd.numParameters()==0&&md.getSymbol().equals("join");
881 boolean isObjectgetType = md.getClassDesc().getSymbol().equals("Object") && md.getSymbol().equals("getType");
882 boolean isObjecthashCode = md.getClassDesc().getSymbol().equals("Object") && md.getSymbol().equals("nativehashCode");
884 LocalityBinding lb=new LocalityBinding(md, isatomic);
885 if (isnative&&isatomic) {
886 System.out.println("Don't call native methods in atomic blocks!"+currlb.getMethod());
888 if (runmethodset==null||!runmethodset.contains(md)) {
889 //Skip this part if it is a run method
890 for(int i=0; i<fc.numArgs(); i++) {
891 TempDescriptor arg=fc.getArg(i);
892 if(isnative&&(currtable.get(arg).equals(GLOBAL)||
893 currtable.get(arg).equals(CONFLICT))&& !(nodemd.getSymbol().equals("rangePrefetch"))) {
894 throw new Error("Potential call to native method "+md+" with global parameter:\n"+currlb.getExplanation());
896 lb.setGlobal(i,currtable.get(arg));
900 if (fc.getThis()!=null) {
901 Integer thistype=currtable.get(fc.getThis());
905 if(runmethodset!=null&&runmethodset.contains(md)&&thistype.equals(LOCAL))
906 throw new Error("Starting thread on local object not allowed in context:\n"+currlb.getExplanation());
907 if(isjoin&&thistype.equals(LOCAL))
908 throw new Error("Joining thread on local object not allowed in context:\n"+currlb.getExplanation());
909 if(thistype.equals(CONFLICT))
910 throw new Error("Using type that can be either local or global in context:\n"+currlb.getExplanation());
911 if(runmethodset==null&&thistype.equals(GLOBAL)&&!isatomic && !isjoin)
912 throw new Error("Using global object outside of transaction in context:\n"+currlb.getExplanation());
913 if (runmethodset==null&&isnative&&thistype.equals(GLOBAL) && !isjoin && !isObjectgetType && !isObjecthashCode)
914 throw new Error("Potential call to native method "+md+" on global objects:\n"+currlb.getExplanation());
915 lb.setGlobalThis(thistype);
918 if (!discovered.containsKey(lb)) {
920 lb.setGlobalReturn(LOCAL);
922 lb.setGlobalReturn(EITHER);
923 lb.setParent(currlb);
925 discovered.put(lb, lb);
926 if (!classtolb.containsKey(lb.getMethod().getClassDesc()))
927 classtolb.put(lb.getMethod().getClassDesc(), new HashSet<LocalityBinding>());
928 classtolb.get(lb.getMethod().getClassDesc()).add(lb);
929 if (!methodtolb.containsKey(lb.getMethod()))
930 methodtolb.put(lb.getMethod(), new HashSet<LocalityBinding>());
931 methodtolb.get(lb.getMethod()).add(lb);
933 lb=discovered.get(lb);
934 Integer returnval=lb.getGlobalReturn();
935 currreturnval=merge(returnval, currreturnval);
936 if (!dependence.containsKey(lb))
937 dependence.put(lb, new HashSet<LocalityBinding>());
938 dependence.get(lb).add(currlb);
940 if (!calldep.containsKey(currlb))
941 calldep.put(currlb, new HashSet<LocalityBinding>());
942 calldep.get(currlb).add(lb);
944 if (fc.getReturnTemp()!=null) {
945 currtable.put(fc.getReturnTemp(), currreturnval);
949 void processFieldNode(LocalityBinding lb, FlatFieldNode ffn, boolean transaction, Hashtable<TempDescriptor, Integer> currtable) {
950 Integer type=currtable.get(ffn.getSrc());
951 TempDescriptor dst=ffn.getDst();
952 if (type.equals(LOCAL)) {
953 if (ffn.getField().isGlobal())
954 currtable.put(dst,GLOBAL);
956 currtable.put(dst,LOCAL);
957 } else if (type.equals(GLOBAL)) {
959 throw new Error("Global access outside of a transaction in context:\n"+lb.getExplanation());
960 if (ffn.getField().getType().isPrimitive()&&!ffn.getField().getType().isArray())
961 currtable.put(dst, LOCAL); // primitives are local
963 currtable.put(dst, GLOBAL);
964 } else if (type.equals(EITHER)) {
965 if (ffn.getField().getType().isPrimitive()&&!ffn.getField().getType().isArray())
966 currtable.put(dst, LOCAL); // primitives are local
967 else if (ffn.getField().isGlobal())
968 currtable.put(dst, GLOBAL);
970 currtable.put(dst, EITHER);
971 } else if (type.equals(CONFLICT)) {
972 throw new Error("Access to object that could be either global or local in context:\n"+lb.getExplanation());
976 //need to handle primitives
977 void processSetFieldNode(LocalityBinding lb, FlatSetFieldNode fsfn, boolean transaction, Hashtable<TempDescriptor, Integer> currtable) {
978 Integer srctype=currtable.get(fsfn.getSrc());
979 Integer dsttype=currtable.get(fsfn.getDst());
981 if (dsttype.equals(LOCAL)) {
982 if (fsfn.getField().isGlobal()) {
983 if (!(srctype.equals(GLOBAL)||srctype.equals(EITHER)))
984 throw new Error("Writing possible local reference to global field in context: \n"+lb.getExplanation());
986 if (!(srctype.equals(LOCAL)||srctype.equals(EITHER)))
987 throw new Error("Writing possible global reference to local object in context: \n"+lb.getExplanation());
989 } else if (dsttype.equals(GLOBAL)) {
991 throw new Error("Global access outside of a transaction in context:\n"+lb.getExplanation());
992 //okay to store primitives in global object
993 if (srctype.equals(LOCAL) && fsfn.getField().getType().isPrimitive() && !fsfn.getField().getType().isArray())
995 if (!(srctype.equals(GLOBAL)||srctype.equals(EITHER)))
996 throw new Error("Writing possible local reference to global object in context:\n"+lb.getExplanation()+" for FlatFieldNode "+fsfn);
997 } else if (dsttype.equals(EITHER)) {
998 if (srctype.equals(CONFLICT))
999 throw new Error("Using reference that could be local or global in context:\n"+lb.getExplanation());
1000 } else if (dsttype.equals(CONFLICT)) {
1001 throw new Error("Access to object that could be either global or local in context:\n"+lb.getExplanation());
1005 void processNew(LocalityBinding lb, FlatNew fn, boolean transaction, Hashtable<TempDescriptor, Integer> currtable) {
1006 if (fn.isGlobal()&&!transaction) {
1007 throw new Error("Allocating global object outside of transaction in context:"+lb.getExplanation());
1010 currtable.put(fn.getDst(), GLOBAL);
1012 currtable.put(fn.getDst(), LOCAL);
1015 void processOpNode(FlatOpNode fon, Hashtable<TempDescriptor, Integer> currtable) {
1016 /* Just propagate value */
1017 Integer srcvalue=currtable.get(fon.getLeft());
1019 if (srcvalue==null) {
1020 if (!fon.getLeft().getType().isPtr()) {
1023 throw new Error(fon.getLeft()+" is undefined!");
1025 currtable.put(fon.getDest(), srcvalue);
1028 void processCastNode(FlatCastNode fcn, Hashtable<TempDescriptor, Integer> currtable) {
1029 currtable.put(fcn.getDst(), currtable.get(fcn.getSrc()));
1032 void processLiteralNode(FlatLiteralNode fln, Hashtable<TempDescriptor, Integer> currtable) {
1034 if (fln.getValue()==null)
1035 currtable.put(fln.getDst(), EITHER);
1037 currtable.put(fln.getDst(), LOCAL);
1040 void processOffsetNode(FlatOffsetNode fln, Hashtable<TempDescriptor, Integer> currtable) {
1041 currtable.put(fln.getDst(), LOCAL);
1044 void processReturnNode(LocalityBinding lb, FlatReturnNode frn, Hashtable<TempDescriptor, Integer> currtable) {
1045 if(frn.getReturnTemp()!=null) {
1046 Integer returntype=currtable.get(frn.getReturnTemp());
1047 lb.setGlobalReturn(merge(returntype, lb.getGlobalReturn()));
1051 void processSetElementNode(LocalityBinding lb, FlatSetElementNode fsen, Hashtable<TempDescriptor, Integer> currtable, boolean isatomic) {
1052 Integer srctype=currtable.get(fsen.getSrc());
1053 Integer dsttype=currtable.get(fsen.getDst());
1055 if (dsttype.equals(LOCAL)) {
1056 if (!(srctype.equals(LOCAL)||srctype.equals(EITHER)))
1057 throw new Error("Writing possible global reference to local object in context:\n"+lb.getExplanation()+fsen);
1058 } else if (dsttype.equals(GLOBAL)) {
1059 if (srctype.equals(LOCAL) && fsen.getDst().getType().dereference().isPrimitive() && !fsen.getDst().getType().dereference().isArray())
1061 if (!(srctype.equals(GLOBAL)||srctype.equals(EITHER)))
1062 throw new Error("Writing possible local reference to global object in context:\n"+lb.getExplanation());
1064 throw new Error("Global access outside of a transaction in context:\n"+lb.getExplanation());
1065 } else if (dsttype.equals(EITHER)) {
1066 if (srctype.equals(CONFLICT))
1067 throw new Error("Using reference that could be local or global in context:\n"+lb.getExplanation());
1068 } else if (dsttype.equals(CONFLICT)) {
1069 throw new Error("Access to object that could be either global or local in context:\n"+lb.getExplanation());
1073 void processElementNode(LocalityBinding lb, FlatElementNode fen, Hashtable<TempDescriptor, Integer> currtable, boolean isatomic) {
1074 Integer type=currtable.get(fen.getSrc());
1075 TempDescriptor dst=fen.getDst();
1076 if (type.equals(LOCAL)) {
1077 currtable.put(dst,LOCAL);
1078 } else if (type.equals(GLOBAL)) {
1080 throw new Error("Global access outside of a transaction in context:\n"+lb.getExplanation());
1081 if(fen.getSrc().getType().dereference().isPrimitive()&&
1082 !fen.getSrc().getType().dereference().isArray())
1083 currtable.put(dst, LOCAL);
1085 currtable.put(dst, GLOBAL);
1086 } else if (type.equals(EITHER)) {
1087 if(fen.getSrc().getType().dereference().isPrimitive()&&
1088 !fen.getSrc().getType().dereference().isArray())
1089 currtable.put(dst, LOCAL);
1091 currtable.put(dst, EITHER);
1092 } else if (type.equals(CONFLICT)) {
1093 throw new Error("Access to object that could be either global or local in context:\n"+lb.getExplanation());
1097 void processAtomicEnterNode(FlatAtomicEnterNode fen, Hashtable<FlatNode, Integer> atomictable) {
1098 int atomic=atomictable.get(fen).intValue();
1099 atomictable.put(fen, new Integer(atomic+1));
1102 void processAtomicExitNode(FlatAtomicExitNode fen, Hashtable<FlatNode, Integer> atomictable) {
1103 int atomic=atomictable.get(fen).intValue();
1104 atomictable.put(fen, new Integer(atomic-1));
1107 Hashtable<FlatNode, Set<TempDescriptor>> computeLiveTemps(FlatMethod fm) {
1108 Hashtable<FlatNode, Set<TempDescriptor>> nodetotemps=new Hashtable<FlatNode, Set<TempDescriptor>>();
1110 Set<FlatNode> toprocess=fm.getNodeSet();
1112 while(!toprocess.isEmpty()) {
1113 FlatNode fn=toprocess.iterator().next();
1114 toprocess.remove(fn);
1116 List<TempDescriptor> reads=Arrays.asList(fn.readsTemps());
1117 List<TempDescriptor> writes=Arrays.asList(fn.writesTemps());
1119 HashSet<TempDescriptor> tempset=new HashSet<TempDescriptor>();
1120 for(int i=0; i<fn.numNext(); i++) {
1121 FlatNode fnnext=fn.getNext(i);
1122 if (nodetotemps.containsKey(fnnext))
1123 tempset.addAll(nodetotemps.get(fnnext));
1125 tempset.removeAll(writes);
1126 tempset.addAll(reads);
1127 if (!nodetotemps.containsKey(fn)||
1128 !nodetotemps.get(fn).equals(tempset)) {
1129 nodetotemps.put(fn, tempset);
1130 for(int i=0; i<fn.numPrev(); i++)
1131 toprocess.add(fn.getPrev(i));
1137 private void computeTempstoSave() {
1138 for(Iterator<LocalityBinding> lbit=getLocalityBindings().iterator(); lbit.hasNext();) {
1139 LocalityBinding lb=lbit.next();
1140 computeTempstoSave(lb);
1144 /* Need to checkpoint all temps that could be read from along any
1145 * path that are either:
1146 1) Written to by any assignment inside the transaction
1147 2) Read from a global temp.
1149 Generate tempstosave map from
1150 localitybinding->flatatomicenternode->Set<TempDescriptors>
1153 private void computeTempstoSave(LocalityBinding lb) {
1156 Hashtable<FlatNode, Integer> atomictab=getAtomic(lb);
1157 Hashtable<FlatNode, Hashtable<TempDescriptor, Integer>> temptab=getNodeTempInfo(lb);
1158 MethodDescriptor md=lb.getMethod();
1159 FlatMethod fm=state.getMethodFlat(md);
1160 Hashtable<FlatNode, Set<TempDescriptor>> nodetotemps=computeLiveTemps(fm);
1161 Hashtable<FlatAtomicEnterNode, Set<TempDescriptor>> nodetosavetemps=new Hashtable<FlatAtomicEnterNode, Set<TempDescriptor>>();
1162 tempstosave.put(lb, nodetosavetemps);
1163 Hashtable<FlatNode, FlatAtomicEnterNode> nodemap=new Hashtable<FlatNode, FlatAtomicEnterNode>();
1164 HashSet<FlatNode> toprocess=new HashSet<FlatNode>();
1165 HashSet<FlatNode> discovered=new HashSet<FlatNode>();
1168 while(!toprocess.isEmpty()) {
1169 FlatNode fn=toprocess.iterator().next();
1170 toprocess.remove(fn);
1171 boolean isatomic=atomictab.get(fn).intValue()>0;
1173 atomictab.get(fn.getPrev(0)).intValue()==0) {
1174 assert(fn.getPrev(0).kind()==FKind.FlatAtomicEnterNode);
1175 nodemap.put(fn, (FlatAtomicEnterNode)fn);
1176 nodetosavetemps.put((FlatAtomicEnterNode)fn, new HashSet<TempDescriptor>());
1177 } else if (isatomic) {
1178 FlatAtomicEnterNode atomicnode=nodemap.get(fn);
1179 Set<TempDescriptor> livetemps=nodetotemps.get(fn);
1180 List<TempDescriptor> reads=Arrays.asList(fn.readsTemps());
1181 List<TempDescriptor> writes=Arrays.asList(fn.readsTemps());
1183 for(Iterator<TempDescriptor> tempit=livetemps.iterator(); tempit.hasNext();) {
1184 TempDescriptor tmp=tempit.next();
1185 if (writes.contains(tmp)) {
1186 nodetosavetemps.get(atomicnode).add(tmp);
1187 } else if (state.DSM) {
1188 if (reads.contains(tmp)&&temptab.get(fn).get(tmp)==GLOBAL) {
1189 nodetosavetemps.get(atomicnode).add(tmp);
1191 } else if (state.SINGLETM) {
1192 if (reads.contains(tmp)&&tmp.getType().isPtr()&&temptab.get(fn).get(tmp)==NORMAL) {
1193 nodetosavetemps.get(atomicnode).add(tmp);
1198 for(int i=0; i<fn.numNext(); i++) {
1199 FlatNode fnnext=fn.getNext(i);
1200 if (!discovered.contains(fnnext)) {
1201 discovered.add(fnnext);
1202 toprocess.add(fnnext);
1204 nodemap.put(fnnext, nodemap.get(fn));