Record and replay debugging
Record and replay debugging is the process of recording the execution of a software program so that it may be played back within a debugger to help diagnose and resolve defects.[1] The concept is analogous to the use of a flight data recorder to diagnose the cause of an airplane flight malfunction.[2]
Recording and replaying
Record and replay debuggers record application state at every step of the program's process and thread execution, including memory interactions, deterministic and non-deterministic inputs, system resource status, and store it to disk in a log[3]. The recording allows the program to be replayed again and again, and debugged exactly as it happened.
Usage
Recordings can be made in one location and replayed in another[4], which makes it useful for remote debugging.
Record and replay debugging is particularly useful for debugging intermittent and non-deterministic defects, which can be difficult to reproduce.
Record and replay debugging technology is often fundamental to reverse debugging and time travel debugging.
Record and replay debuggers
References
- ^ Mozilla. "Engineering Record And Replay For Deployability Extended Technical Report" (PDF). Cornell University arXiv. Mozilla. Retrieved 16 May 2017.
- ^ Zicari, Roberto. "On Software Reliability. Interview with Barry Morris and Dale Vile". ODBMS Industry Watch. ODBMS Industry Watch. Retrieved 2 April 2019.
- ^ Undo, Ltd. "System and method for debugging of computer programs". Google Patents. US Patent Office. Retrieved 23 February 2016.
- ^ Undo, Ltd. "Remote recording". Undo Documentation. Undo, Ltd. Retrieved 1 October 2019.