protected void merge(Object in1, Object in2, Object out) {
FlowSet inSet1 = (FlowSet) in1, inSet2 = (FlowSet) in2;
FlowSet outSet = (FlowSet) out;
inSet1.union(inSet2, outSet);
}
protected void flowThrough(Object inValue, Object unit, Object outValue) {
FlowSet in = (FlowSet) inValue, out = (FlowSet) outValue;
// Perform kill
in.difference(unitToKillSet.get(unit), out);
// Perform generation
out.union(unitToGenerateSet.get(unit), out);
}
public void computeMonitorObjs() {
Set maps = monitor.entrySet();
for (Iterator iter = maps.iterator(); iter.hasNext(); ) {
Map.Entry entry = (Map.Entry) iter.next();
FlowSet fs = (FlowSet) entry.getValue();
Iterator it = fs.iterator();
while (it.hasNext()) {
Object obj = it.next();
if (!monitorObjs.contains(obj)) monitorObjs.add(obj);
}
}
}
private boolean removeBeginNode() {
List heads = getHeads();
if (heads.size() != 1) {
// System.out.println("heads: "+heads);
// System.out.println("Error: the size of heads is not equal to 1!");
return false;
// System.exit(1);
} else {
JPegStmt head = (JPegStmt) heads.get(0);
// System.out.println("test head: "+head);
if (!head.getName().equals("begin")) {
System.err.println("Error: the head is not begin node!");
System.exit(1);
}
// remove begin node from heads list
heads.remove(0);
// set the preds list of the succs of head to a new list and put succs of head into heads
Iterator succOfHeadIt = getSuccsOf(head).iterator();
while (succOfHeadIt.hasNext()) {
JPegStmt succOfHead = (JPegStmt) succOfHeadIt.next();
unitToPreds.put(succOfHead, new ArrayList());
// put succs of head into heads
heads.add(succOfHead);
}
// remove begin node from inlinee Peg
if (!mainPegChain.remove(head)) {
System.err.println("fail to remove begin node in from mainPegChain!");
System.exit(1);
}
if (!allNodes.contains(head)) {
System.err.println("fail to find begin node in FlowSet allNodes!");
System.exit(1);
} else {
allNodes.remove(head);
}
// remove begin node from unitToSuccs
if (unitToSuccs.containsKey(head)) {
unitToSuccs.remove(head);
}
}
return true;
}
public void testWaitingNodes() {
System.out.println("------waiting---begin");
Set maps = waitingNodes.entrySet();
for (Iterator iter = maps.iterator(); iter.hasNext(); ) {
Map.Entry entry = (Map.Entry) iter.next();
System.out.println("---key= " + entry.getKey());
FlowSet fs = (FlowSet) entry.getValue();
if (fs.size() > 0) {
System.out.println("**waiting nodes set:");
Iterator it = fs.iterator();
while (it.hasNext()) {
JPegStmt unit = (JPegStmt) it.next();
System.out.println(unit.toString());
}
}
}
System.out.println("------------waitingnodes---ends--------");
}
public boolean addPeg(PegGraph pg, Chain chain) {
if (!pg.removeBeginNode()) return false;
// System.out.println("adding one peg into another");
// System.out.println("after removeBeginNode===");
// pg.testPegChain();
// System.out.println(pg);
// put every node of peg into this
Iterator mainIt = pg.mainIterator();
while (mainIt.hasNext()) {
JPegStmt s = (JPegStmt) mainIt.next();
// System.out.println("add to mainPegChain: "+s);
mainPegChain.addLast(s);
// if (chain.contains(s)){
// System.err.println("error! chain contains: "+s);
// System.exit(1);
// }
// else
// chain.addLast(s);
}
Iterator it = pg.iterator();
while (it.hasNext()) {
JPegStmt s = (JPegStmt) it.next();
// System.out.println("add to allNodes: "+s);
if (allNodes.contains(s)) {
System.err.println("error! allNodes contains: " + s);
System.exit(1);
} else allNodes.add(s);
}
// testPegChain();
// testIterator();
unitToSuccs.putAll(pg.getUnitToSuccs());
unitToPreds.putAll(pg.getUnitToPreds());
// testUnitToSucc();
// testUnitToPred();
// buildMaps(pg); // RLH
return true;
}
/**
* given a DelayabilityAnalysis and the computations of each unit, calculates the latest
* computation-point for each expression.<br>
* the <code>equivRhsMap</code> could be calculated on the fly, but it is <b>very</b> likely that
* it already exists (as similar maps are used for calculating Earliestness, Delayed,...<br>
* the shared set allows more efficient set-operations, when they the computation is merged with
* other analyses/computations.
*
* @param dg a ExceptionalUnitGraph
* @param delayed the delayability-analysis of the same graph.
* @param equivRhsMap all computations of the graph
* @param set the shared flowSet
*/
public LatestComputation(
UnitGraph unitGraph, DelayabilityAnalysis delayed, Map equivRhsMap, BoundedFlowSet set) {
unitToLatest = new HashMap<Unit, FlowSet>(unitGraph.size() + 1, 0.7f);
Iterator unitIt = unitGraph.iterator();
while (unitIt.hasNext()) {
/* create a new Earliest-list for each unit */
Unit currentUnit = (Unit) unitIt.next();
/* basically the latest-set is:
* (delayed) INTERSECT (comp UNION (UNION_successors ~Delayed)) =
* (delayed) MINUS ((INTERSECTION_successors Delayed) MINUS comp).
*/
FlowSet delaySet = (FlowSet) delayed.getFlowBefore(currentUnit);
/* Calculate (INTERSECTION_successors Delayed) */
FlowSet succCompSet = (FlowSet) set.topSet();
List succList = unitGraph.getSuccsOf(currentUnit);
Iterator succIt = succList.iterator();
while (succIt.hasNext()) {
Unit successor = (Unit) succIt.next();
succCompSet.intersection((FlowSet) delayed.getFlowBefore(successor), succCompSet);
}
/* remove the computation of this set: succCompSet is then:
* ((INTERSECTION_successors Delayed) MINUS comp) */
if (equivRhsMap.get(currentUnit) != null) succCompSet.remove(equivRhsMap.get(currentUnit));
/* make the difference: */
FlowSet latest = (FlowSet) delaySet.emptySet();
delaySet.difference(succCompSet, latest);
unitToLatest.put(currentUnit, latest);
}
}
/**
* Computes the analysis given a UnitGraph computed from a method body. It is recommended that a
* ExceptionalUnitGraph (or similar) be provided for correct results in the case of exceptional
* control flow.
*
* @param g a graph on which to compute the analysis.
* @see ExceptionalUnitGraph
*/
public SimpleLiveLocals(UnitGraph graph) {
if (Options.v().time()) Timers.v().liveTimer.start();
if (Options.v().verbose())
G.v()
.out
.println(
"["
+ graph.getBody().getMethod().getName()
+ "] Constructing SimpleLiveLocals...");
SimpleLiveLocalsAnalysis analysis = new SimpleLiveLocalsAnalysis(graph);
if (Options.v().time()) Timers.v().livePostTimer.start();
// Build unitToLocals map
{
unitToLocalsAfter = new HashMap<Unit, List>(graph.size() * 2 + 1, 0.7f);
unitToLocalsBefore = new HashMap<Unit, List>(graph.size() * 2 + 1, 0.7f);
Iterator unitIt = graph.iterator();
while (unitIt.hasNext()) {
Unit s = (Unit) unitIt.next();
FlowSet set = (FlowSet) analysis.getFlowBefore(s);
unitToLocalsBefore.put(s, Collections.unmodifiableList(set.toList()));
set = (FlowSet) analysis.getFlowAfter(s);
unitToLocalsAfter.put(s, Collections.unmodifiableList(set.toList()));
}
}
if (Options.v().time()) Timers.v().livePostTimer.end();
if (Options.v().time()) Timers.v().liveTimer.end();
}
public void testMonitor() {
System.out.println("=====test monitor size: " + monitor.size());
Set maps = monitor.entrySet();
for (Iterator iter = maps.iterator(); iter.hasNext(); ) {
Map.Entry entry = (Map.Entry) iter.next();
String key = (String) entry.getKey();
System.out.println("---key= " + key);
FlowSet list = (FlowSet) entry.getValue();
if (list.size() > 0) {
System.out.println("**set: " + list.size());
Iterator it = list.iterator();
while (it.hasNext()) {
Object obj = it.next();
if (obj instanceof JPegStmt) {
JPegStmt stmt = (JPegStmt) obj;
Tag tag1 = (Tag) stmt.getTags().get(0);
System.out.println(tag1 + " " + stmt);
} else {
System.out.println("---list---");
Iterator listIt = ((List) obj).iterator();
while (listIt.hasNext()) {
Object oo = listIt.next();
if (oo instanceof JPegStmt) {
JPegStmt unit = (JPegStmt) oo;
Tag tag = (Tag) unit.getTags().get(0);
System.out.println(tag + " " + unit);
} else System.out.println(oo);
}
System.out.println("---list--end-");
}
}
}
}
System.out.println("=========monitor--ends--------");
}
SimpleLiveLocalsAnalysis(UnitGraph g) {
super(g);
if (Options.v().time()) Timers.v().liveSetupTimer.start();
emptySet = new ArraySparseSet();
// Create kill sets.
{
unitToKillSet = new HashMap<Unit, FlowSet>(g.size() * 2 + 1, 0.7f);
Iterator unitIt = g.iterator();
while (unitIt.hasNext()) {
Unit s = (Unit) unitIt.next();
FlowSet killSet = emptySet.clone();
Iterator boxIt = s.getDefBoxes().iterator();
while (boxIt.hasNext()) {
ValueBox box = (ValueBox) boxIt.next();
if (box.getValue() instanceof Local) killSet.add(box.getValue(), killSet);
}
unitToKillSet.put(s, killSet);
}
}
// Create generate sets
{
unitToGenerateSet = new HashMap<Unit, FlowSet>(g.size() * 2 + 1, 0.7f);
Iterator unitIt = g.iterator();
while (unitIt.hasNext()) {
Unit s = (Unit) unitIt.next();
FlowSet genSet = emptySet.clone();
Iterator boxIt = s.getUseBoxes().iterator();
while (boxIt.hasNext()) {
ValueBox box = (ValueBox) boxIt.next();
if (box.getValue() instanceof Local) genSet.add(box.getValue(), genSet);
}
unitToGenerateSet.put(s, genSet);
}
}
if (Options.v().time()) Timers.v().liveSetupTimer.end();
if (Options.v().time()) Timers.v().liveAnalysisTimer.start();
doAnalysis();
if (Options.v().time()) Timers.v().liveAnalysisTimer.end();
}
protected void copy(Object source, Object dest) {
FlowSet sourceSet = (FlowSet) source, destSet = (FlowSet) dest;
sourceSet.copy(destSet);
}
protected Object entryInitialFlow() {
return emptySet.clone();
}
protected void buildSuccsForInlining(JPegStmt stmt, Chain chain, PegGraph inlinee) {
// System.out.println("entering buildSuccsForInlining...");
Tag tag = (Tag) stmt.getTags().get(0);
// System.out.println("stmt is: "+tag+" "+stmt);
/*connect heads of inlinee with the preds of invokeStmt and
* delete stmt from the succs list from the preds
*/
Iterator predIt = getPredsOf(stmt).iterator();
// System.out.println("preds list: "+getPredsOf(stmt));
// System.out.println("preds size: "+getPredsOf(stmt).size());
Iterator headsIt = inlinee.getHeads().iterator();
{
// System.out.println("heads: "+inlinee.getHeads());
while (predIt.hasNext()) {
JPegStmt pred = (JPegStmt) predIt.next();
// System.out.println("pred: "+pred);
List succList = (List) getSuccsOf(pred);
// System.out.println("succList of pred: "+succList);
int pos = succList.indexOf(stmt);
// System.out.println("remove : "+stmt + " from succList: \n"+succList+ "\n of pred" );
// remove invokeStmt
succList.remove(pos);
while (headsIt.hasNext()) {
succList.add(headsIt.next());
}
unitToSuccs.put(pred, succList);
}
{
while (headsIt.hasNext()) {
Object head = headsIt.next();
List predsOfHeads = new ArrayList();
predsOfHeads.addAll(getPredsOf(head));
unitToPreds.put(head, predsOfHeads);
}
}
/*
{
predIt = getPredsOf(stmt).iterator();
while (predIt.hasNext()){
JPegStmt s = (JPegStmt)predIt.next();
if (unitToSuccs.containsKey(s)){
Iterator succIt = ((List) unitToSuccs.get(s)).iterator();
while(succIt.hasNext()){
//Object successor = succIt.next();
JPegStmt successor = (JPegStmt)succIt.next();
List predList = (List) unitToPreds.get(successor);
if (predList != null) {
try {
predList.add(s);
} catch(NullPointerException e) {
System.out.println(s + "successor: " + successor);
throw e;
}
}
}
}
}
}*/
}
/*connect tails of inlinee with the succ of invokeStmt and
* delete stmt from the
*/
Iterator tailsIt = inlinee.getTails().iterator();
{
// System.out.println("tails: "+inlinee.getTails());
while (tailsIt.hasNext()) {
Iterator succIt = getSuccsOf(stmt).iterator();
JPegStmt tail = (JPegStmt) tailsIt.next();
List succList = null;
if (unitToSuccs.containsKey(tail)) {
// System.out.println("error: unitToSucc containsKey: "+tail);
succList = (List) getSuccsOf(tail);
// System.out.println("succList: "+succList);
} else {
succList = new ArrayList();
}
while (succIt.hasNext()) {
JPegStmt succ = (JPegStmt) succIt.next();
succList.add(succ);
// System.out.println("succ: "+succ);
// remove stmt from the preds list of the succs of itself.
List predListOfSucc = getPredsOf(succ);
if (predListOfSucc == null) {
System.err.println("Error: predListOfSucc is null!");
System.exit(1);
} else {
if (predListOfSucc.size() != 0) {
int pos = predListOfSucc.indexOf(stmt);
if (pos > 0 || pos == 0) {
// System.out.println("remove stmt: "+stmt+" from the preds list"+predListOfSucc+"
// of the succ");
predListOfSucc.remove(pos);
}
// System.out.println("remove(from PRED): ");
}
}
unitToPreds.put(succ, predListOfSucc);
}
unitToSuccs.put(tail, succList);
// System.out.println("put: "+tail);
// System.out.println("succList: "+succList+ "into unitToSucc");
}
}
// add Nov 1
{
tailsIt = inlinee.getTails().iterator();
while (tailsIt.hasNext()) {
JPegStmt s = (JPegStmt) tailsIt.next();
if (unitToSuccs.containsKey(s)) {
Iterator succIt = unitToSuccs.get(s).iterator();
while (succIt.hasNext()) {
// Object successor = succIt.next();
JPegStmt successor = (JPegStmt) succIt.next();
List<JPegStmt> predList = unitToPreds.get(successor);
if (predList != null && !predList.contains(s)) {
try {
predList.add(s);
/*
Tag tag = (Tag)successor.getTags().get(0);
System.out.println("add "+s+" to predlist of "+tag+" "+successor);
*/
} catch (NullPointerException e) {
System.out.println(s + "successor: " + successor);
throw e;
}
}
}
}
}
}
// end add Nov 1
// System.out.println("stmt: "+stmt);
// remove stmt from allNodes and mainPegChain
// System.out.println("mainPegChain contains stmt: "+mainPegChain.contains(stmt));
// testPegChain();
if (!allNodes.contains(stmt)) {
System.err.println("fail to find begin node in allNodes!");
System.exit(1);
} else {
allNodes.remove(stmt);
// System.out.println("remove from allNode: "+stmt);
}
if (!chain.contains(stmt)) {
System.err.println("Error! Chain does not contains stmt (extending point)!");
System.exit(1);
} else {
if (!chain.remove(stmt)) {
System.err.println("fail to remove invoke stmt in from Chain!");
System.exit(1);
}
}
/*
if (!mainPegChain.contains(stmt)){
boolean find = false;
//System.out.println("main chain does not contain AFTER");
Set maps = startToThread.entrySet();
for(Iterator iter=maps.iterator(); iter.hasNext();){
Map.Entry entry = (Map.Entry)iter.next();
Object startNode = entry.getKey();
Iterator runIt = ((List)entry.getValue()).iterator();
while (runIt.hasNext()){
Chain chain=(Chain)runIt.next();
if (chain.contains(stmt)) {
find = true;
if (!chain.remove(stmt)){
System.err.println("fail to remove begin node in from mainPegChain!");
System.exit(1);
}
break;
}
}
if (find == false){
System.err.println("fail to find stmt: "+stmt+" in chains!");
System.exit(1);
}
}
//this.toString();
}
else{
if (!mainPegChain.remove(stmt)) {
System.err.println("fail to remove begin node in from mainPegChain!");
System.exit(1);
}
else{
// System.out.println("remove(from mainchain): "+stmt);
}
}
*/
// remove stmt from unitToSuccs and unitToPreds
if (unitToSuccs.containsKey(stmt)) {
unitToSuccs.remove(stmt);
}
if (unitToPreds.containsKey(stmt)) {
unitToPreds.remove(stmt);
}
}
// This method adds the monitorenter/exit statements into whichever pegChain contains the
// corresponding node statement
protected void addMonitorStmt() {
// System.out.println("====entering addMonitorStmt");
if (synch.size() > 0) {
// System.out.println("synch: "+synch);
Iterator<List> it = synch.iterator();
while (it.hasNext()) {
List list = it.next();
JPegStmt node = (JPegStmt) list.get(0);
JPegStmt enter = (JPegStmt) list.get(1);
JPegStmt exit = (JPegStmt) list.get(2);
// System.out.println("monitor node: "+node);
// System.out.println("monitor enter: "+enter);
// System.out.println("monitor exit: "+exit);
// add for test
// System.out.println("allNodes contains node: "+allNodes.contains(node));
// end add for test
{
if (!mainPegChain.contains(node)) {
boolean find = false;
// System.out.println("main chain does not contain node");
Set maps = startToThread.entrySet();
// System.out.println("size of startToThread: "+startToThread.size());
for (Iterator iter = maps.iterator(); iter.hasNext(); ) {
Map.Entry entry = (Map.Entry) iter.next();
Object startNode = entry.getKey();
Iterator runIt = ((List) entry.getValue()).iterator();
while (runIt.hasNext()) {
Chain chain = (Chain) runIt.next();
// testPegChain(chain);
if (chain.contains(node)) {
find = true;
// System.out.println("---find it---");
chain.add(enter);
chain.add(exit);
break;
}
}
}
if (find == false) {
System.err.println("fail to find stmt: " + node + " in chains!");
System.exit(1);
}
// this.toString();
} else {
mainPegChain.add(enter);
mainPegChain.add(exit);
}
}
allNodes.add(enter);
allNodes.add(exit);
insertBefore(node, enter);
insertAfter(node, exit);
}
}
// add for test
/*
{
// System.out.println("===main peg chain===");
//testPegChain(mainPegChain);
//System.out.println("===end main peg chain===");
Set maps = startToThread.entrySet();
for(Iterator iter=maps.iterator(); iter.hasNext();){
Map.Entry entry = (Map.Entry)iter.next();
Object startNode = entry.getKey();
Iterator runIt = ((List)entry.getValue()).iterator();
while (runIt.hasNext()){
Chain chain=(Chain)runIt.next();
testPegChain(chain);
}
}
}
*/
// System.out.println(this.toString());
// end add for test
}
public Iterator iterator() {
return allNodes.iterator();
}
public int size() {
return allNodes.size();
// return pegSize;
}