1. In a computing environment, a method of debugging an executing process, the method comprising: generating a unique key for a runtime function in the executing process, the runtime function corresponding to runtime code which is represented by at least two different representations in different domains of source code corresponding to the runtime function; using the unique key, storing a mapping between the source code for the runtime function and the binary form instructions for the runtime function in the executing process; annotating a runtime for the executing process with the unique key; detecting that the function is executing; using the unique key, providing an indication in one or more of the at least two different representations that the function is executing.