An internal breakpoint is a breakpoint that does not not necessarily stop the execution flow.

mcGDB current information capture mechanism relies on internal breakpoints set during the initialization:

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As we can see in the animation,

  1. During the initialization, several internal breakpoints are set (slides 1-3)
  2. The user gives the order to start the execution. The order is transmitted down to the execution platform. (slide 4)
  3. During the initialization of the environment, the internal breakpoints are triggered (slides 5, 8, 11, 12, 14, 16)
  4. In reaction to these breakpoint hits, mcgdb updates its internal representation (slides 6, 9, 11, 12, 14)
  5. And continues silently the execution …
  6. … until an event interesting the user happens (slide 16).