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());
406 Hashtable<TempDescriptor,Integer> oldtable=temptable.get(fn);
407 if (oldtable==null||!oldtable.equals(currtable)) {
408 // Update table for this node
409 temptable.put(fn, currtable);
410 for(int i=0; i<fn.numNext(); i++) {
411 tovisit.add(fn.getNext(i));
417 void processNewSTM(LocalityBinding lb, FlatNew fn, Hashtable<TempDescriptor, Integer> currtable) {
419 currtable.put(fn.getDst(), SCRATCH);
421 currtable.put(fn.getDst(), NORMAL);
424 void processCallNodeSTM(LocalityBinding currlb, FlatCall fc, boolean isatomic, Hashtable<TempDescriptor, Integer> currtable, Hashtable<TempDescriptor, Integer> oldtable) {
425 MethodDescriptor nodemd=fc.getMethod();
427 Set runmethodset=null;
429 if (nodemd.isStatic()||nodemd.getReturnType()==null) {
430 methodset=new HashSet();
431 methodset.add(nodemd);
433 methodset=callgraph.getMethods(nodemd, fc.getThis().getType());
434 // Build start -> run link
435 if (nodemd.getClassDesc().getSymbol().equals(TypeUtil.ThreadClass)&&
436 nodemd.getSymbol().equals("start")&&!nodemd.getModifiers().isStatic()&&
437 nodemd.numParameters()==0) {
438 assert(nodemd.getModifiers().isNative());
440 MethodDescriptor runmd=null;
441 for(Iterator methodit=nodemd.getClassDesc().getMethodTable().getSet("staticStart").iterator(); methodit.hasNext();) {
442 MethodDescriptor md=(MethodDescriptor) methodit.next();
443 if (md.numParameters()!=1||!md.getModifiers().isStatic()||!md.getParamType(0).getSymbol().equals(TypeUtil.ThreadClass))
449 runmethodset=callgraph.getMethods(runmd,fc.getThis().getType());
450 methodset.addAll(runmethodset);
451 } else throw new Error("Can't find run method");
455 Integer currreturnval=STMEITHER; //Start off with the either value
456 if (oldtable!=null&&fc.getReturnTemp()!=null&&
457 oldtable.get(fc.getReturnTemp())!=null) {
459 currreturnval=mergestm(currreturnval, oldtable.get(fc.getReturnTemp()));
462 for(Iterator methodit=methodset.iterator(); methodit.hasNext();) {
463 MethodDescriptor md=(MethodDescriptor) methodit.next();
465 boolean isnative=md.getModifiers().isNative();
466 boolean isjoin = md.getClassDesc().getSymbol().equals(TypeUtil.ThreadClass)&&!nodemd.getModifiers().isStatic()&&nodemd.numParameters()==0&&md.getSymbol().equals("join");
467 boolean isObjectgetType = md.getClassDesc().getSymbol().equals("Object") && md.getSymbol().equals("getType");
468 boolean isObjecthashCode = md.getClassDesc().getSymbol().equals("Object") && md.getSymbol().equals("nativehashCode");
470 LocalityBinding lb=new LocalityBinding(md, isatomic);
471 if (isnative&&isatomic) {
472 System.out.println("Don't call native methods in atomic blocks!"+currlb.getMethod());
475 if (runmethodset==null||!runmethodset.contains(md)) {
476 for(int i=0; i<fc.numArgs(); i++) {
477 TempDescriptor arg=fc.getArg(i);
478 lb.setGlobal(i,currtable.get(arg));
480 if (fc.getThis()!=null) {
481 Integer thistype=currtable.get(fc.getThis());
485 if(thistype.equals(STMCONFLICT))
486 throw new Error("Using type that can be either normal or scratch in context:\n"+currlb.getExplanation());
487 lb.setGlobalThis(thistype);
490 Integer thistype=currtable.get(fc.getThis());
491 if (!thistype.equals(NORMAL)) {
492 throw new Error("Called start on possible scratch object");
494 lb.setGlobal(0,currtable.get(fc.getThis()));
497 if (!discovered.containsKey(lb)) {
499 if (nodemd.getReturnType()==null||!nodemd.getReturnType().isPtr())
500 lb.setGlobalReturn(SCRATCH);
502 lb.setGlobalReturn(NORMAL);
504 lb.setGlobalReturn(STMEITHER);
506 lb.setParent(currlb);
508 discovered.put(lb, lb);
509 if (!classtolb.containsKey(lb.getMethod().getClassDesc()))
510 classtolb.put(lb.getMethod().getClassDesc(), new HashSet<LocalityBinding>());
511 classtolb.get(lb.getMethod().getClassDesc()).add(lb);
512 if (!methodtolb.containsKey(lb.getMethod()))
513 methodtolb.put(lb.getMethod(), new HashSet<LocalityBinding>());
514 methodtolb.get(lb.getMethod()).add(lb);
516 lb=discovered.get(lb);
517 Integer returnval=lb.getGlobalReturn();
518 currreturnval=mergestm(returnval, currreturnval);
519 if (!dependence.containsKey(lb))
520 dependence.put(lb, new HashSet<LocalityBinding>());
521 dependence.get(lb).add(currlb);
523 if (!calldep.containsKey(currlb))
524 calldep.put(currlb, new HashSet<LocalityBinding>());
525 calldep.get(currlb).add(lb);
527 if (fc.getReturnTemp()!=null) {
528 currtable.put(fc.getReturnTemp(), currreturnval);
532 void processFieldNodeSTM(LocalityBinding lb, FlatFieldNode ffn, Hashtable<TempDescriptor, Integer> currtable) {
533 Integer type=currtable.get(ffn.getSrc());
534 TempDescriptor dst=ffn.getDst();
535 if (type.equals(SCRATCH)) {
536 currtable.put(dst,SCRATCH);
537 } else if (type.equals(NORMAL)) {
538 if (ffn.getField().getType().isPrimitive()&&!ffn.getField().getType().isArray())
539 currtable.put(dst, SCRATCH); // primitives are local
541 currtable.put(dst, NORMAL);
542 } else if (type.equals(STMEITHER)) {
543 if (ffn.getField().getType().isPrimitive()&&!ffn.getField().getType().isArray())
544 currtable.put(dst, SCRATCH); // primitives are local
546 currtable.put(dst, STMEITHER);
547 } else if (type.equals(STMCONFLICT)) {
548 throw new Error("Access to object that could be either normal or scratch in context:\n"+ffn+" "+lb.getExplanation());
552 //need to handle primitives
553 void processSetFieldNodeSTM(LocalityBinding lb, FlatSetFieldNode fsfn, Hashtable<TempDescriptor, Integer> currtable) {
554 Integer srctype=currtable.get(fsfn.getSrc());
555 Integer dsttype=currtable.get(fsfn.getDst());
557 if (dsttype.equals(SCRATCH)) {
558 if (srctype.equals(SCRATCH) && fsfn.getField().getType().isPrimitive() && !fsfn.getField().getType().isArray())
560 if (!(srctype.equals(SCRATCH)||srctype.equals(STMEITHER)))
561 throw new Error("Writing possible normal reference to scratch object in context: \n"+lb.getExplanation());
562 } else if (dsttype.equals(NORMAL)) {
563 //okay to store primitives in global object
564 if (srctype.equals(SCRATCH) && fsfn.getField().getType().isPrimitive() && !fsfn.getField().getType().isArray())
566 if (!(srctype.equals(NORMAL)||srctype.equals(STMEITHER)))
567 throw new Error("Writing possible scratch reference to normal object in context:\n"+lb.getExplanation()+" for FlatFieldNode "+fsfn);
568 } else if (dsttype.equals(STMEITHER)) {
569 if (srctype.equals(STMCONFLICT))
570 throw new Error("Using reference that could be scratch or normal in context:\n"+lb.getExplanation());
571 } else if (dsttype.equals(STMCONFLICT)) {
572 throw new Error("Access to object that could be either scratch or normal in context:\n"+lb.getExplanation());
576 void processSetElementNodeSTM(LocalityBinding lb, FlatSetElementNode fsen, Hashtable<TempDescriptor, Integer> currtable) {
577 Integer srctype=currtable.get(fsen.getSrc());
578 Integer dsttype=currtable.get(fsen.getDst());
580 if (dsttype.equals(SCRATCH)) {
581 if (!(srctype.equals(SCRATCH)||srctype.equals(STMEITHER)))
582 throw new Error("Writing possible normal reference to scratch object in context:\n"+lb.getExplanation()+fsen);
583 } else if (dsttype.equals(NORMAL)) {
584 if (srctype.equals(SCRATCH) && fsen.getDst().getType().dereference().isPrimitive() && !fsen.getDst().getType().dereference().isArray())
586 if (!(srctype.equals(NORMAL)||srctype.equals(STMEITHER)))
587 throw new Error("Writing possible scratch reference to normal object in context:\n"+lb.getExplanation());
588 } else if (dsttype.equals(STMEITHER)) {
589 if (srctype.equals(STMCONFLICT))
590 throw new Error("Using reference that could be scratch or normal in context:\n"+lb.getExplanation());
591 } else if (dsttype.equals(STMCONFLICT)) {
592 throw new Error("Access to object that could be either normal or scratch in context:\n"+lb.getExplanation());
596 void processOpNodeSTM(FlatOpNode fon, Hashtable<TempDescriptor, Integer> currtable) {
597 /* Just propagate value */
598 Integer srcvalue=currtable.get(fon.getLeft());
600 if (srcvalue==null) {
601 if (!fon.getLeft().getType().isPtr()) {
604 throw new Error(fon.getLeft()+" is undefined!");
606 currtable.put(fon.getDest(), srcvalue);
609 void processCastNodeSTM(FlatCastNode fcn, Hashtable<TempDescriptor, Integer> currtable) {
610 currtable.put(fcn.getDst(), currtable.get(fcn.getSrc()));
613 void processReturnNodeSTM(LocalityBinding lb, FlatReturnNode frn, Hashtable<TempDescriptor, Integer> currtable) {
614 if(frn.getReturnTemp()!=null) {
615 Integer returntype=currtable.get(frn.getReturnTemp());
616 lb.setGlobalReturn(mergestm(returntype, lb.getGlobalReturn()));
620 void processLiteralNodeSTM(FlatLiteralNode fln, Hashtable<TempDescriptor, Integer> currtable) {
622 if (fln.getType().isNull())
623 currtable.put(fln.getDst(), STMEITHER);
624 else if (fln.getType().isPtr())
625 currtable.put(fln.getDst(), NORMAL);
627 currtable.put(fln.getDst(), SCRATCH);
630 void processElementNodeSTM(LocalityBinding lb, FlatElementNode fen, Hashtable<TempDescriptor, Integer> currtable) {
631 Integer type=currtable.get(fen.getSrc());
632 TempDescriptor dst=fen.getDst();
633 if (type.equals(SCRATCH)) {
634 currtable.put(dst,SCRATCH);
635 } else if (type.equals(NORMAL)) {
636 if(fen.getSrc().getType().dereference().isPrimitive()&&
637 !fen.getSrc().getType().dereference().isArray())
638 currtable.put(dst, SCRATCH);
640 currtable.put(dst, NORMAL);
641 } else if (type.equals(STMEITHER)) {
642 if(fen.getSrc().getType().dereference().isPrimitive()&&
643 !fen.getSrc().getType().dereference().isArray())
644 currtable.put(dst, SCRATCH);
646 currtable.put(dst, STMEITHER);
647 } else if (type.equals(STMCONFLICT)) {
648 throw new Error("Access to object that could be either global or local in context:\n"+lb.getExplanation());
652 private void computeLocalityBindings() {
653 lbmain=new LocalityBinding(typeutil.getMain(), false);
654 lbmain.setGlobalReturn(EITHER);
655 lbmain.setGlobal(0, LOCAL);
656 lbtovisit.add(lbmain);
657 discovered.put(lbmain, lbmain);
658 if (!classtolb.containsKey(lbmain.getMethod().getClassDesc()))
659 classtolb.put(lbmain.getMethod().getClassDesc(), new HashSet<LocalityBinding>());
660 classtolb.get(lbmain.getMethod().getClassDesc()).add(lbmain);
662 if (!methodtolb.containsKey(lbmain.getMethod()))
663 methodtolb.put(lbmain.getMethod(), new HashSet<LocalityBinding>());
664 methodtolb.get(lbmain.getMethod()).add(lbmain);
666 //Do this to force a virtual table number for the run method
667 lbrun=new LocalityBinding(typeutil.getRun(), false);
668 lbrun.setGlobalReturn(EITHER);
669 lbrun.setGlobalThis(GLOBAL);
670 lbtovisit.add(lbrun);
671 discovered.put(lbrun, lbrun);
672 if (!classtolb.containsKey(lbrun.getMethod().getClassDesc()))
673 classtolb.put(lbrun.getMethod().getClassDesc(), new HashSet<LocalityBinding>());
674 classtolb.get(lbrun.getMethod().getClassDesc()).add(lbrun);
676 if (!methodtolb.containsKey(lbrun.getMethod()))
677 methodtolb.put(lbrun.getMethod(), new HashSet<LocalityBinding>());
678 methodtolb.get(lbrun.getMethod()).add(lbrun);
680 while(!lbtovisit.empty()) {
681 LocalityBinding lb=(LocalityBinding) lbtovisit.pop();
682 Integer returnglobal=lb.getGlobalReturn();
683 MethodDescriptor md=lb.getMethod();
684 Hashtable<FlatNode,Hashtable<TempDescriptor, Integer>> temptable=new Hashtable<FlatNode,Hashtable<TempDescriptor, Integer>>();
685 Hashtable<FlatNode, Integer> atomictable=new Hashtable<FlatNode, Integer>();
688 computeCallsFlags(md, lb, temptable, atomictable);
690 System.out.println("Error in "+md+" context "+lb);
694 temptab.put(lb, temptable);
695 atomictab.put(lb, atomictable);
697 if (md.getReturnType()!=null&&!returnglobal.equals(lb.getGlobalReturn())) {
698 //return type is more precise now
699 //rerun everything that call us
700 lbtovisit.addAll(dependence.get(lb));
708 public void computeCallsFlags(MethodDescriptor md, LocalityBinding lb, Hashtable<FlatNode, Hashtable<TempDescriptor, Integer>> temptable, Hashtable<FlatNode, Integer> atomictable) {
709 FlatMethod fm=state.getMethodFlat(md);
710 HashSet<FlatNode> tovisit=new HashSet<FlatNode>();
711 tovisit.add(fm.getNext(0));
713 // Build table for initial node
714 Hashtable<TempDescriptor,Integer> table=new Hashtable<TempDescriptor,Integer>();
715 temptable.put(fm, table);
716 atomictable.put(fm, lb.isAtomic() ? 1 : 0);
717 int offset=md.isStatic() ? 0 : 1;
718 if (!md.isStatic()) {
719 table.put(fm.getParameter(0), lb.getGlobalThis());
721 for(int i=offset; i<fm.numParameters(); i++) {
722 TempDescriptor temp=fm.getParameter(i);
723 Integer b=lb.isGlobal(i-offset);
728 while(!tovisit.isEmpty()) {
729 FlatNode fn=tovisit.iterator().next();
731 Hashtable<TempDescriptor, Integer> currtable=new Hashtable<TempDescriptor, Integer>();
733 for(int i=0; i<fn.numPrev(); i++) {
734 FlatNode prevnode=fn.getPrev(i);
735 if (atomictable.containsKey(prevnode)) {
736 atomicstate=atomictable.get(prevnode).intValue();
738 if (!temptable.containsKey(prevnode))
740 Hashtable<TempDescriptor, Integer> prevtable=temptable.get(prevnode);
741 for(Iterator<TempDescriptor> tempit=prevtable.keySet().iterator(); tempit.hasNext();) {
742 TempDescriptor temp=tempit.next();
743 Integer tmpint=prevtable.get(temp);
744 Integer oldint=currtable.containsKey(temp) ? currtable.get(temp) : EITHER;
745 Integer newint=merge(tmpint, oldint);
746 currtable.put(temp, newint);
749 atomictable.put(fn, atomicstate);
752 case FKind.FlatAtomicEnterNode:
753 processAtomicEnterNode((FlatAtomicEnterNode)fn, atomictable);
758 case FKind.FlatAtomicExitNode:
759 processAtomicExitNode((FlatAtomicExitNode)fn, atomictable);
763 processCallNode(lb, (FlatCall)fn, currtable, isAtomic(atomictable, fn));
766 case FKind.FlatFieldNode:
767 processFieldNode(lb, (FlatFieldNode)fn, isAtomic(atomictable, fn), currtable);
770 case FKind.FlatSetFieldNode:
771 processSetFieldNode(lb, (FlatSetFieldNode)fn, isAtomic(atomictable,fn), currtable);
775 processNew(lb, (FlatNew)fn, isAtomic(atomictable, fn), currtable);
778 case FKind.FlatOpNode:
779 processOpNode((FlatOpNode)fn, currtable);
782 case FKind.FlatCastNode:
783 processCastNode((FlatCastNode)fn, currtable);
786 case FKind.FlatLiteralNode:
787 processLiteralNode((FlatLiteralNode)fn, currtable);
790 case FKind.FlatReturnNode:
791 processReturnNode(lb, (FlatReturnNode)fn, currtable);
794 case FKind.FlatSetElementNode:
795 processSetElementNode(lb, (FlatSetElementNode)fn, currtable, isAtomic(atomictable, fn));
798 case FKind.FlatElementNode:
799 processElementNode(lb, (FlatElementNode)fn, currtable, isAtomic(atomictable, fn));
802 case FKind.FlatInstanceOfNode:
803 case FKind.FlatCondBranch:
804 case FKind.FlatBackEdge:
807 case FKind.FlatPrefetchNode:
808 //No action needed for these
811 case FKind.FlatFlagActionNode:
812 case FKind.FlatCheckNode:
813 case FKind.FlatTagDeclaration:
814 throw new Error("Incompatible with tasks!");
816 case FKind.FlatMethod:
819 case FKind.FlatOffsetNode:
820 processOffsetNode((FlatOffsetNode)fn, currtable);
824 throw new Error("In finding fn.kind()= " + fn.kind());
826 Hashtable<TempDescriptor,Integer> oldtable=temptable.get(fn);
827 if (oldtable==null||!oldtable.equals(currtable)) {
828 // Update table for this node
829 temptable.put(fn, currtable);
830 for(int i=0; i<fn.numNext(); i++) {
831 tovisit.add(fn.getNext(i));
837 private static boolean isAtomic(Hashtable<FlatNode, Integer> atomictable, FlatNode fn) {
838 return atomictable.get(fn).intValue()>0;
841 private static Integer merge(Integer a, Integer b) {
842 if (a==null||a.equals(EITHER))
844 if (b==null||b.equals(EITHER))
851 void processCallNode(LocalityBinding currlb, FlatCall fc, Hashtable<TempDescriptor, Integer> currtable, boolean isatomic) {
852 MethodDescriptor nodemd=fc.getMethod();
854 Set runmethodset=null;
856 if (nodemd.isStatic()||nodemd.getReturnType()==null) {
857 methodset=new HashSet();
858 methodset.add(nodemd);
860 methodset=callgraph.getMethods(nodemd, fc.getThis().getType());
861 // Build start -> run link
862 if (nodemd.getClassDesc().getSymbol().equals(TypeUtil.ThreadClass)&&
863 nodemd.getSymbol().equals("start")&&!nodemd.getModifiers().isStatic()&&
864 nodemd.numParameters()==1&&nodemd.getParamType(0).isInt()) {
865 assert(nodemd.getModifiers().isNative());
867 MethodDescriptor runmd=null;
868 for(Iterator methodit=nodemd.getClassDesc().getMethodTable().getSet("run").iterator(); methodit.hasNext();) {
869 MethodDescriptor md=(MethodDescriptor) methodit.next();
870 if (md.numParameters()!=0||md.getModifiers().isStatic())
876 runmethodset=callgraph.getMethods(runmd,fc.getThis().getType());
877 methodset.addAll(runmethodset);
878 } else throw new Error("Can't find run method");
882 Integer currreturnval=EITHER; //Start off with the either value
883 for(Iterator methodit=methodset.iterator(); methodit.hasNext();) {
884 MethodDescriptor md=(MethodDescriptor) methodit.next();
886 boolean isnative=md.getModifiers().isNative();
887 boolean isjoin = md.getClassDesc().getSymbol().equals(TypeUtil.ThreadClass)&&!nodemd.getModifiers().isStatic()&&nodemd.numParameters()==0&&md.getSymbol().equals("join");
888 boolean isObjectgetType = md.getClassDesc().getSymbol().equals("Object") && md.getSymbol().equals("getType");
889 boolean isObjecthashCode = md.getClassDesc().getSymbol().equals("Object") && md.getSymbol().equals("nativehashCode");
891 LocalityBinding lb=new LocalityBinding(md, isatomic);
892 if (isnative&&isatomic) {
893 System.out.println("Don't call native methods in atomic blocks!"+currlb.getMethod());
895 if (runmethodset==null||!runmethodset.contains(md)) {
896 //Skip this part if it is a run method
897 for(int i=0; i<fc.numArgs(); i++) {
898 TempDescriptor arg=fc.getArg(i);
899 if(isnative&&(currtable.get(arg).equals(GLOBAL)||
900 currtable.get(arg).equals(CONFLICT))&& !(nodemd.getSymbol().equals("rangePrefetch"))) {
901 throw new Error("Potential call to native method "+md+" with global parameter:\n"+currlb.getExplanation());
903 lb.setGlobal(i,currtable.get(arg));
907 if (fc.getThis()!=null) {
908 Integer thistype=currtable.get(fc.getThis());
912 if(runmethodset!=null&&runmethodset.contains(md)&&thistype.equals(LOCAL))
913 throw new Error("Starting thread on local object not allowed in context:\n"+currlb.getExplanation());
914 if(isjoin&&thistype.equals(LOCAL))
915 throw new Error("Joining thread on local object not allowed in context:\n"+currlb.getExplanation());
916 if(thistype.equals(CONFLICT))
917 throw new Error("Using type that can be either local or global in context:\n"+currlb.getExplanation());
918 if(runmethodset==null&&thistype.equals(GLOBAL)&&!isatomic && !isjoin)
919 throw new Error("Using global object outside of transaction in context:\n"+currlb.getExplanation());
920 if (runmethodset==null&&isnative&&thistype.equals(GLOBAL) && !isjoin && !isObjectgetType && !isObjecthashCode)
921 throw new Error("Potential call to native method "+md+" on global objects:\n"+currlb.getExplanation());
922 lb.setGlobalThis(thistype);
925 if (!discovered.containsKey(lb)) {
927 lb.setGlobalReturn(LOCAL);
929 lb.setGlobalReturn(EITHER);
930 lb.setParent(currlb);
932 discovered.put(lb, lb);
933 if (!classtolb.containsKey(lb.getMethod().getClassDesc()))
934 classtolb.put(lb.getMethod().getClassDesc(), new HashSet<LocalityBinding>());
935 classtolb.get(lb.getMethod().getClassDesc()).add(lb);
936 if (!methodtolb.containsKey(lb.getMethod()))
937 methodtolb.put(lb.getMethod(), new HashSet<LocalityBinding>());
938 methodtolb.get(lb.getMethod()).add(lb);
940 lb=discovered.get(lb);
941 Integer returnval=lb.getGlobalReturn();
942 currreturnval=merge(returnval, currreturnval);
943 if (!dependence.containsKey(lb))
944 dependence.put(lb, new HashSet<LocalityBinding>());
945 dependence.get(lb).add(currlb);
947 if (!calldep.containsKey(currlb))
948 calldep.put(currlb, new HashSet<LocalityBinding>());
949 calldep.get(currlb).add(lb);
951 if (fc.getReturnTemp()!=null) {
952 currtable.put(fc.getReturnTemp(), currreturnval);
956 void processFieldNode(LocalityBinding lb, FlatFieldNode ffn, boolean transaction, Hashtable<TempDescriptor, Integer> currtable) {
957 Integer type=currtable.get(ffn.getSrc());
958 TempDescriptor dst=ffn.getDst();
959 if (type.equals(LOCAL)) {
960 if (ffn.getField().isGlobal())
961 currtable.put(dst,GLOBAL);
963 currtable.put(dst,LOCAL);
964 } else if (type.equals(GLOBAL)) {
966 throw new Error("Global access outside of a transaction in context:\n"+lb.getExplanation());
967 if (ffn.getField().getType().isPrimitive()&&!ffn.getField().getType().isArray())
968 currtable.put(dst, LOCAL); // primitives are local
970 currtable.put(dst, GLOBAL);
971 } else if (type.equals(EITHER)) {
972 if (ffn.getField().getType().isPrimitive()&&!ffn.getField().getType().isArray())
973 currtable.put(dst, LOCAL); // primitives are local
974 else if (ffn.getField().isGlobal())
975 currtable.put(dst, GLOBAL);
977 currtable.put(dst, EITHER);
978 } else if (type.equals(CONFLICT)) {
979 throw new Error("Access to object that could be either global or local in context:\n"+lb.getExplanation());
983 //need to handle primitives
984 void processSetFieldNode(LocalityBinding lb, FlatSetFieldNode fsfn, boolean transaction, Hashtable<TempDescriptor, Integer> currtable) {
985 Integer srctype=currtable.get(fsfn.getSrc());
986 Integer dsttype=currtable.get(fsfn.getDst());
988 if (dsttype.equals(LOCAL)) {
989 if (fsfn.getField().isGlobal()) {
990 if (!(srctype.equals(GLOBAL)||srctype.equals(EITHER)))
991 throw new Error("Writing possible local reference to global field in context: \n"+lb.getExplanation());
993 if (!(srctype.equals(LOCAL)||srctype.equals(EITHER)))
994 throw new Error("Writing possible global reference to local object in context: \n"+lb.getExplanation());
996 } else if (dsttype.equals(GLOBAL)) {
998 throw new Error("Global access outside of a transaction in context:\n"+lb.getExplanation());
999 //okay to store primitives in global object
1000 if (srctype.equals(LOCAL) && fsfn.getField().getType().isPrimitive() && !fsfn.getField().getType().isArray())
1002 if (!(srctype.equals(GLOBAL)||srctype.equals(EITHER)))
1003 throw new Error("Writing possible local reference to global object in context:\n"+lb.getExplanation()+" for FlatFieldNode "+fsfn);
1004 } else if (dsttype.equals(EITHER)) {
1005 if (srctype.equals(CONFLICT))
1006 throw new Error("Using reference that could be local or global in context:\n"+lb.getExplanation());
1007 } else if (dsttype.equals(CONFLICT)) {
1008 throw new Error("Access to object that could be either global or local in context:\n"+lb.getExplanation());
1012 void processNew(LocalityBinding lb, FlatNew fn, boolean transaction, Hashtable<TempDescriptor, Integer> currtable) {
1013 if (fn.isGlobal()&&!transaction) {
1014 throw new Error("Allocating global object outside of transaction in context:"+lb.getExplanation());
1017 currtable.put(fn.getDst(), GLOBAL);
1019 currtable.put(fn.getDst(), LOCAL);
1022 void processOpNode(FlatOpNode fon, Hashtable<TempDescriptor, Integer> currtable) {
1023 /* Just propagate value */
1024 Integer srcvalue=currtable.get(fon.getLeft());
1026 if (srcvalue==null) {
1027 if (!fon.getLeft().getType().isPtr()) {
1030 throw new Error(fon.getLeft()+" is undefined!");
1032 currtable.put(fon.getDest(), srcvalue);
1035 void processCastNode(FlatCastNode fcn, Hashtable<TempDescriptor, Integer> currtable) {
1036 currtable.put(fcn.getDst(), currtable.get(fcn.getSrc()));
1039 void processLiteralNode(FlatLiteralNode fln, Hashtable<TempDescriptor, Integer> currtable) {
1041 if (fln.getValue()==null)
1042 currtable.put(fln.getDst(), EITHER);
1044 currtable.put(fln.getDst(), LOCAL);
1047 void processOffsetNode(FlatOffsetNode fln, Hashtable<TempDescriptor, Integer> currtable) {
1048 currtable.put(fln.getDst(), LOCAL);
1051 void processReturnNode(LocalityBinding lb, FlatReturnNode frn, Hashtable<TempDescriptor, Integer> currtable) {
1052 if(frn.getReturnTemp()!=null) {
1053 Integer returntype=currtable.get(frn.getReturnTemp());
1054 lb.setGlobalReturn(merge(returntype, lb.getGlobalReturn()));
1058 void processSetElementNode(LocalityBinding lb, FlatSetElementNode fsen, Hashtable<TempDescriptor, Integer> currtable, boolean isatomic) {
1059 Integer srctype=currtable.get(fsen.getSrc());
1060 Integer dsttype=currtable.get(fsen.getDst());
1062 if (dsttype.equals(LOCAL)) {
1063 if (!(srctype.equals(LOCAL)||srctype.equals(EITHER)))
1064 throw new Error("Writing possible global reference to local object in context:\n"+lb.getExplanation()+fsen);
1065 } else if (dsttype.equals(GLOBAL)) {
1066 if (srctype.equals(LOCAL) && fsen.getDst().getType().dereference().isPrimitive() && !fsen.getDst().getType().dereference().isArray())
1068 if (!(srctype.equals(GLOBAL)||srctype.equals(EITHER)))
1069 throw new Error("Writing possible local reference to global object in context:\n"+lb.getExplanation());
1071 throw new Error("Global access outside of a transaction in context:\n"+lb.getExplanation());
1072 } else if (dsttype.equals(EITHER)) {
1073 if (srctype.equals(CONFLICT))
1074 throw new Error("Using reference that could be local or global in context:\n"+lb.getExplanation());
1075 } else if (dsttype.equals(CONFLICT)) {
1076 throw new Error("Access to object that could be either global or local in context:\n"+lb.getExplanation());
1080 void processElementNode(LocalityBinding lb, FlatElementNode fen, Hashtable<TempDescriptor, Integer> currtable, boolean isatomic) {
1081 Integer type=currtable.get(fen.getSrc());
1082 TempDescriptor dst=fen.getDst();
1083 if (type.equals(LOCAL)) {
1084 currtable.put(dst,LOCAL);
1085 } else if (type.equals(GLOBAL)) {
1087 throw new Error("Global access outside of a transaction in context:\n"+lb.getExplanation());
1088 if(fen.getSrc().getType().dereference().isPrimitive()&&
1089 !fen.getSrc().getType().dereference().isArray())
1090 currtable.put(dst, LOCAL);
1092 currtable.put(dst, GLOBAL);
1093 } else if (type.equals(EITHER)) {
1094 if(fen.getSrc().getType().dereference().isPrimitive()&&
1095 !fen.getSrc().getType().dereference().isArray())
1096 currtable.put(dst, LOCAL);
1098 currtable.put(dst, EITHER);
1099 } else if (type.equals(CONFLICT)) {
1100 throw new Error("Access to object that could be either global or local in context:\n"+lb.getExplanation());
1104 void processAtomicEnterNode(FlatAtomicEnterNode fen, Hashtable<FlatNode, Integer> atomictable) {
1105 int atomic=atomictable.get(fen).intValue();
1106 atomictable.put(fen, new Integer(atomic+1));
1109 void processAtomicExitNode(FlatAtomicExitNode fen, Hashtable<FlatNode, Integer> atomictable) {
1110 int atomic=atomictable.get(fen).intValue();
1111 atomictable.put(fen, new Integer(atomic-1));
1114 Hashtable<FlatNode, Set<TempDescriptor>> computeLiveTemps(FlatMethod fm) {
1115 Hashtable<FlatNode, Set<TempDescriptor>> nodetotemps=new Hashtable<FlatNode, Set<TempDescriptor>>();
1117 Set<FlatNode> toprocess=fm.getNodeSet();
1119 while(!toprocess.isEmpty()) {
1120 FlatNode fn=toprocess.iterator().next();
1121 toprocess.remove(fn);
1123 List<TempDescriptor> reads=Arrays.asList(fn.readsTemps());
1124 List<TempDescriptor> writes=Arrays.asList(fn.writesTemps());
1126 HashSet<TempDescriptor> tempset=new HashSet<TempDescriptor>();
1127 for(int i=0; i<fn.numNext(); i++) {
1128 FlatNode fnnext=fn.getNext(i);
1129 if (nodetotemps.containsKey(fnnext))
1130 tempset.addAll(nodetotemps.get(fnnext));
1132 tempset.removeAll(writes);
1133 tempset.addAll(reads);
1134 if (!nodetotemps.containsKey(fn)||
1135 !nodetotemps.get(fn).equals(tempset)) {
1136 nodetotemps.put(fn, tempset);
1137 for(int i=0; i<fn.numPrev(); i++)
1138 toprocess.add(fn.getPrev(i));
1144 private void computeTempstoSave() {
1145 for(Iterator<LocalityBinding> lbit=getLocalityBindings().iterator(); lbit.hasNext();) {
1146 LocalityBinding lb=lbit.next();
1147 computeTempstoSave(lb);
1151 /* Need to checkpoint all temps that could be read from along any
1152 * path that are either:
1153 1) Written to by any assignment inside the transaction
1154 2) Read from a global temp.
1156 Generate tempstosave map from
1157 localitybinding->flatatomicenternode->Set<TempDescriptors>
1160 private void computeTempstoSave(LocalityBinding lb) {
1163 Hashtable<FlatNode, Integer> atomictab=getAtomic(lb);
1164 Hashtable<FlatNode, Hashtable<TempDescriptor, Integer>> temptab=getNodeTempInfo(lb);
1165 MethodDescriptor md=lb.getMethod();
1166 FlatMethod fm=state.getMethodFlat(md);
1167 Hashtable<FlatNode, Set<TempDescriptor>> nodetotemps=computeLiveTemps(fm);
1168 Hashtable<FlatAtomicEnterNode, Set<TempDescriptor>> nodetosavetemps=new Hashtable<FlatAtomicEnterNode, Set<TempDescriptor>>();
1169 tempstosave.put(lb, nodetosavetemps);
1170 Hashtable<FlatNode, FlatAtomicEnterNode> nodemap=new Hashtable<FlatNode, FlatAtomicEnterNode>();
1171 HashSet<FlatNode> toprocess=new HashSet<FlatNode>();
1172 HashSet<FlatNode> discovered=new HashSet<FlatNode>();
1175 while(!toprocess.isEmpty()) {
1176 FlatNode fn=toprocess.iterator().next();
1177 toprocess.remove(fn);
1178 boolean isatomic=atomictab.get(fn).intValue()>0;
1180 atomictab.get(fn.getPrev(0)).intValue()==0) {
1181 assert(fn.getPrev(0).kind()==FKind.FlatAtomicEnterNode);
1182 nodemap.put(fn, (FlatAtomicEnterNode)fn);
1183 nodetosavetemps.put((FlatAtomicEnterNode)fn, new HashSet<TempDescriptor>());
1184 } else if (isatomic) {
1185 FlatAtomicEnterNode atomicnode=nodemap.get(fn);
1186 Set<TempDescriptor> livetemps=nodetotemps.get(fn);
1187 List<TempDescriptor> reads=Arrays.asList(fn.readsTemps());
1188 List<TempDescriptor> writes=Arrays.asList(fn.readsTemps());
1190 for(Iterator<TempDescriptor> tempit=livetemps.iterator(); tempit.hasNext();) {
1191 TempDescriptor tmp=tempit.next();
1192 if (writes.contains(tmp)) {
1193 nodetosavetemps.get(atomicnode).add(tmp);
1194 } else if (state.DSM) {
1195 if (reads.contains(tmp)&&temptab.get(fn).get(tmp)==GLOBAL) {
1196 nodetosavetemps.get(atomicnode).add(tmp);
1198 } else if (state.SINGLETM) {
1199 if (reads.contains(tmp)&&tmp.getType().isPtr()&&temptab.get(fn).get(tmp)==NORMAL) {
1200 nodetosavetemps.get(atomicnode).add(tmp);
1205 for(int i=0; i<fn.numNext(); i++) {
1206 FlatNode fnnext=fn.getNext(i);
1207 if (!discovered.contains(fnnext)) {
1208 discovered.add(fnnext);
1209 toprocess.add(fnnext);
1211 nodemap.put(fnnext, nodemap.get(fn));