public Instruction execute(SystemState ss, KernelState ks, ThreadInfo ti) {
if (!ti.isFirstStepInsn()) {
InvocationCG cg = new InvocationCG("INVOKECG", invokes);
ss.setNextChoiceGenerator(cg);
return this;
} else {
InvocationCG cg = ss.getCurrentChoiceGenerator("INVOKECG", InvocationCG.class);
assert (cg != null) : "no current InvocationCG";
Invocation call = cg.getNextChoice();
MethodInfo callee = call.getMethodInfo();
InstructionFactory insnFactory = MethodInfo.getInstructionFactory();
if (callee.isStatic()) {
realInvoke = (InvokeInstruction) insnFactory.create(null, Constants.INVOKESTATIC);
} else {
realInvoke = (InvokeInstruction) insnFactory.create(null, Constants.INVOKENONVIRTUAL);
}
realInvoke.init(mi, offset, position);
realInvoke.setInvokedMethod(
callee.getClassInfo().getName(), callee.getName(), callee.getSignature());
pushArguments(ti, call.getArguments(), call.getAttrs());
return realInvoke;
}
}
/** @see gov.nasa.jpf.ListenerAdapter#instructionExecuted(gov.nasa.jpf.jvm.JVM) */
public void instructionExecuted(JVM vm) {
Instruction instr = vm.getLastInstruction();
ThreadInfo ti = vm.getLastThreadInfo();
if (instr instanceof InvokeInstruction) {
InvokeInstruction invInstr = ((InvokeInstruction) instr);
String method = invInstr.toString();
// if(method.contains("Test"))
// System.out.println(method);
MethodInfo mi = ((InvokeInstruction) instr).getInvokedMethod();
if (this.traceDefFilter != null && this.traceDefFilter.accept(mi)) {
// Callee
ElementInfo calleeElement = ti.getThisElementInfo();
MethodInfo calleeMethod = invInstr.getInvokedMethod();
ClassInfo calleeClass = null;
int calleeID = -1;
if (calleeMethod.isStatic()) {
// static method: method declared in class
calleeClass = calleeMethod.getClassInfo();
// static methods do not have a instance
calleeID = -1;
} else {
// non static method: method is maybe overridden. get the current class
// instead of the class the method is declared in.
calleeClass = calleeElement.getClassInfo();
// get the current instance
calleeID = calleeElement.getThisReference();
}
assert (calleeClass != null);
// Caller
ElementInfo callerElement = ti.getElementInfo(ti.getCallerStackFrame().getThis());
if (callerElement != null) {
MethodInfo callerMethod = invInstr.getMethodInfo();
ClassInfo callerClass = null;
int callerID = -1;
if (callerMethod.isStatic()) {
// see above
callerClass = callerMethod.getClassInfo();
callerID = -1;
} else {
// see above
callerClass = callerElement.getClassInfo();
callerID = callerElement.getThisReference();
}
// Arguments
Object[] argumentValues = invInstr.getArgumentValues(ti);
Object[] arguments = new Object[argumentValues.length];
for (int i = 0; i < arguments.length; i++) {
if (this.argumentValues) {
if (argumentValues[i] instanceof ElementInfo)
arguments[i] = ((ElementInfo) argumentValues[i]).getThisReference();
else arguments[i] = argumentValues[i];
} else arguments[i] = null;
}
MethodEntry methodEntry =
new MethodEntry(
callerID,
callerMethod,
callerClass,
calleeID,
calleeMethod,
calleeClass,
arguments,
ti.getName());
this.currentStateNode.methods.add(methodEntry);
if (this.timeStamps) methodEntry.time = new Date().getTime();
}
}
}
}