Logging Callins

[ftc]

TODO: finish filling this out

Method call:

origional code

v = rec.foo(arg1,... argn)

instrumented code

Object[] args = new Object[n];
args[0] = rec
args[1] = arg1
...
args[n] = argn
signature = "...rec"
methodname="foo"
sourceLocation="..."
caller = this;
try{
    tmp_uniqueIDForEntryFromAtomicInteger = recordEntry(signature, methodName, sourceLocation, args, caller);
    v = rec.foo(arg1,.... argn)
    recordExit(signature, methodName, sourceLocation, v, tmp_uniqueIDForEntryFromAtomicInteger) //v is return value
}catch(Throwable t){
    logThrow(t);
    throw t;
}

We want to log

• (Ignore for now) exceptions thrown -reciever -list of arguments

  Control Dependency of Method Calls

  Object Logging:

Note: these include primitives since java auto casts We want to log:

• address http://docs.oracle.com/javase/6/docs/api/java/lang/System.html#identityHashCode%28java.lang.Object%29
• Type
• First Framework Type
  • Get this at runtime since we cannot statically determine this
• Interfaces
• For Integer, boolean: log value
• For String: log first 200 chars, log if exceeds