1. A computer-readable medium comprising computer-program instructions for Just-My-Code (JMC) debugging, the computer-program instructions being executable by a processor for: automatically inserting debugging probes into respective programming constructs representing interesting code, the debugging probes being inserted during computer computer-program compiling operations to generate native code; and executing the native code as a process, the process comprising one or more threads of execution that run-free through uninteresting code during a JMC step operation, a thread of the one or more threads only being halted in the interesting code when an active one of the debugging probes is encountered by the thread while the thread is JMC stepping through the process.