public void executeInstruction(JVM vm) {
Instruction insn = vm.getLastInstruction();
MethodInfo mi = insn.getMethodInfo();
ThreadInfo ti = vm.getLastThreadInfo();
if (mi != lastMi) {
logStack(ti);
lastMi = mi;
} else if (insn instanceof InvokeInstruction) {
MethodInfo callee;
// that's the only little gist of it - if this is a VirtualInvocation,
// we have to dig the callee out by ourselves (it's not known
// before execution)
if (insn instanceof VirtualInvocation) {
VirtualInvocation callInsn = (VirtualInvocation) insn;
int objref = callInsn.getCalleeThis(ti);
callee = callInsn.getInvokedMethod(ti, objref);
} else if (insn instanceof INVOKESPECIAL) {
INVOKESPECIAL callInsn = (INVOKESPECIAL) insn;
callee = callInsn.getInvokedMethod(ti);
} else {
InvokeInstruction callInsn = (InvokeInstruction) insn;
callee = callInsn.getInvokedMethod(ti);
}
if (callee != null) {
if (callee.isMJI()) {
logStack(ti);
}
} else {
out.println("ERROR: unknown callee of: " + insn);
}
}
}
protected MethodInfo createCallStub(String originator, int id) {
MethodInfo mi = new MethodInfo(id);
String cname = ci.getName();
Instruction insn;
mi.name =
originator
+ name; // + cname; // could maybe also include the called method, but keep it fast
mi.signature = "()V";
mi.maxLocals = isStatic() ? 0 : 1;
mi.maxStack = getNumberOfCallerStackSlots(); // <2do> cache for optimization
mi.localVariableNames = EMPTY;
mi.localVariableTypes = EMPTY;
mi.lineNumbers = null;
mi.exceptions = null;
mi.thrownExceptionClassNames = null;
mi.uniqueName = mi.name;
// createAndInitialize the code
CodeBuilder cb = mi.getCodeBuilder();
if (isStatic()) {
mi.modifiers |= Modifier.STATIC;
if (isClinit()) {
insn = insnFactory.create(null, INVOKECLINIT.OPCODE);
} else {
insn = insnFactory.create(null, Constants.INVOKESTATIC);
}
} else if (name.equals("<init>")) {
insn = insnFactory.create(null, Constants.INVOKESPECIAL);
} else {
insn = insnFactory.create(null, Constants.INVOKEVIRTUAL);
}
((InvokeInstruction) insn).setInvokedMethod(cname, name, signature);
cb.append(insn);
insn = insnFactory.create(null, Constants.RETURN);
cb.append(insn);
cb.setCode();
return mi;
}
/** @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();
}
}
}
}