import gov.nasa.jpf.vm.bytecode.ReadInstruction;
import gov.nasa.jpf.vm.bytecode.StoreInstruction;
import gov.nasa.jpf.vm.bytecode.WriteInstruction;
+import gov.nasa.jpf.vm.choice.IntChoiceFromSet;
import java.io.PrintWriter;
**/
public class ConflictTracker extends ListenerAdapter {
+
private final PrintWriter out;
+ private final HashMap<Integer, Node> nodes = new HashMap<Integer, Node>(); // Nodes of a graph
private final HashSet<String> conflictSet = new HashSet<String>(); // Variables we want to track
private final HashSet<String> appSet = new HashSet<String>(); // Apps we want to find their conflicts
private final HashSet<String> manualSet = new HashSet<String>(); // Writer classes with manual inputs to detect direct-direct(No Conflict) interactions
- private final HashMap<Integer, Node> nodes = new HashMap<Integer, Node>(); // Nodes of a graph
private HashSet<Transition> transitions = new HashSet<Transition>();
private ArrayList<Update> currUpdates = new ArrayList<Update>();
private long timeout;
private String operation;
private String detail;
private String errorMessage;
+ private String varName;
private int depth;
private int id;
private boolean manual = false;
private boolean conflictFound = false;
+ private int currentEvent = -1;
+ private boolean debugMode = false;
+ private int popRef = 0;
private final String SET_LOCATION_METHOD = "setLocationMode";
private final String LOCATION_VAR = "locationMode";
public ConflictTracker(Config config, JPF jpf) {
out = new PrintWriter(System.out, true);
+ debugMode = config.getBoolean("debug_mode", false);
String[] conflictVars = config.getStringArray("variables");
// We are not tracking anything if it is null
}
//Check for conflict with the appropriate update set if we are not a manual transition
- if (confupdates != null && !u.isManual()) {
+ //If this is debug mode, then we do not report any conflicts
+ if (!debugMode && confupdates != null && !u.isManual()) {
for(Update u2: confupdates) {
if (conflicts(u, u2)) {
//throw new RuntimeException(createErrorMessage(u, u2));
return message;
}
- Edge createEdge(Node parent, Node current, Transition transition) {
+ Edge createEdge(Node parent, Node current, Transition transition, int evtNum) {
//Check if this transition is explored. If so, just skip everything
if (transitions.contains(transition))
return null;
//Create edge
- Edge e = new Edge(parent, current, transition, currUpdates);
+ Edge e = new Edge(parent, current, transition, evtNum, currUpdates);
parent.addOutEdge(e);
//Mark transition as explored
static class Edge {
Node source, destination;
Transition transition;
+ int eventNumber;
ArrayList<Update> updates = new ArrayList<Update>();
- Edge(Node src, Node dst, Transition t, ArrayList<Update> _updates) {
+ Edge(Node src, Node dst, Transition t, int evtNum, ArrayList<Update> _updates) {
this.source = src;
this.destination = dst;
this.transition = t;
+ this.eventNumber = evtNum;
this.updates.addAll(_updates);
}
return transition;
}
+ int getEventNumber() { return eventNumber; }
+
ArrayList<Update> getUpdates() {
return updates;
}
System.out.println("}");
}
+
+ @Override
+ public void choiceGeneratorAdvanced(VM vm, ChoiceGenerator<?> currentCG) {
+
+ if (currentCG instanceof IntChoiceFromSet) {
+ IntChoiceFromSet icsCG = (IntChoiceFromSet) currentCG;
+ currentEvent = icsCG.getNextChoice();
+ }
+ }
@Override
public void stateAdvanced(Search search) {
Node currentNode = getNode(id);
// Create an edge based on the current transition
- Edge newEdge = createEdge(parentNode, currentNode, transition);
+ Edge newEdge = createEdge(parentNode, currentNode, transition, currentEvent);
// Reset the temporary variables and flags
currUpdates.clear();
ti.setNextPC(nextIns);
}
}
-
+
if (conflictFound) {
StringBuilder sb = new StringBuilder();
sb.append(errorMessage);
Instruction nextIns = ti.createAndThrowException("java.lang.RuntimeException", sb.toString());
ti.setNextPC(nextIns);
- } else if (conflictSet.contains(LOCATION_VAR)) {
- MethodInfo mi = executedInsn.getMethodInfo();
- // Find the last load before return and get the value here
- if (mi.getName().equals(SET_LOCATION_METHOD) &&
- executedInsn instanceof ALOAD && nextInsn instanceof ARETURN) {
- byte type = getType(ti, executedInsn);
- String value = getValue(ti, executedInsn, type);
-
- // Extract the writer app name
- ClassInfo ci = mi.getClassInfo();
- String writer = ci.getName();
-
- // Update the temporary Set set.
- writeWriterAndValue(writer, LOCATION_VAR, value);
- }
} else {
+ // Check if we are ready to pop the values
+ if (popRef == 2) {
+ byte type = getType(ti, executedInsn);
+ varName = getValue(ti, executedInsn, type);
+ String writer = getWriter(ti.getStack(), appSet);
+
+ popRef = popRef-1;
+ } else if (popRef == 1) {
+ byte type = getType(ti, executedInsn);
+ String value = getValue(ti, executedInsn, type);
+ String writer = getWriter(ti.getStack(), appSet);
+
+ for (String var: conflictSet) {
+ if (varName.contains(var)) {
+ if (writer != null)
+ writeWriterAndValue(writer, varName, value);
+ }
+ }
+
+ popRef = popRef-1;
+ }
+
+
+ if (executedInsn.getMnemonic().equals("getfield")) {
+ if (executedInsn.toString().contains("deviceValueSmartThing") ||
+ executedInsn.toString().contains("deviceIntValueSmartThing")) {
+ if (executedInsn.getNext() != null) {
+ if (executedInsn.getNext().getMnemonic().contains("load")) {
+
+ if (executedInsn.getNext().getNext() != null)
+ if (executedInsn.getNext().getNext().getMnemonic().contains("load"))
+ popRef = 2;
+ }
+ }
+ }
+ }
+
if (executedInsn instanceof WriteInstruction) {
String varId = ((WriteInstruction) executedInsn).getFieldInfo().getFullName();
-
- // Check if we have an update to isManualTransaction to update manual field
- if (varId.contains("isManualTransaction")) {
- byte type = getType(ti, executedInsn);
- String value = getValue(ti, executedInsn, type);
-
- manual = (value.equals("true"))?true:false;
- }
-
- for (String var : conflictSet) {
- if (varId.contains(var)) {
- // Get variable info
- byte type = getType(ti, executedInsn);
- String value = getValue(ti, executedInsn, type);
- String writer = getWriter(ti.getStack(), appSet);
-
- // Just return if the writer is not one of the listed apps in the .jpf file
- if (writer == null)
- return;
-
- // Update the current updates
- writeWriterAndValue(writer, var, value);
- }
+ // Check if we have an update to isManualTransaction to update manual field
+ if (varId.contains("isManualTransaction")) {
+ byte type = getType(ti, executedInsn);
+ String value = getValue(ti, executedInsn, type);
+
+ manual = (value.equals("true"))?true:false;
}
}
- }
+ }
}
}
projects / jpf-core.git / blobdiff