Mark Williamson

CTO and Bad Movie Expert @

[Daisy Hollman @The_Whole_Daisy]

Today we're announcing Claude Code plugins!

https://t.co/WD2TfN8d3d

It's the first major feature in Claude Code that I've gotten the opportunity to lead, and I'm really excited to see how everyone uses it! 🧵1/4

[Undo @undo_io]

Watch Mark Williamson as he brings a zombie back to life by using Time Travel Debugging!

https://t.co/wvnv8xURZr

#Coding #Gamedev

[Undo @undo_io]

Are you interested in learning how Doom works under the hood? Then try out Time Travel Debugging!

https://t.co/wvnv8xVpOZ

#Coding #Gamedev

[Mark Williamson @mark_undoio]

Bugs whose effects travel across multiple processes? Fear no more!

[Undo @undo_io]

Tired of chasing values across processes? 😩

UDB & Live Recorder let you:
🔎 Record & replay multi-process execution
🔄 Track IPC flow across C & C++ apps
⚡ Find & fix bugs faster than ever
Watch Magne Hov’s guide now! 🎥

https://t.co/ognrjIn0J5

#Cprogramming #Testing

[Axel Souchet @0vercl0k]

The latest TTD release includes some pretty cool changes; you can now 'break on registers' (!tt br) & navigate to the next module boundary (!tt bm) and more! 🔥

https://t.co/gfoNPtzyRr

[Mark Williamson @mark_undoio]

It's me!

[Undo @undo_io]

Watch @mark_undoio as he brings a zombie back to life by using Time Travel Debugging!

https://t.co/wvnv8xURZr

#Coding #Gamedev

[Undo @undo_io]

In light of the recent news about DeepSeek AI, check out our new YouTube Video!

How DeepSeek AI Works Under The Hood - Watch Replayed Program Execution with Time Travel Debugging

https://t.co/seB1afZ9RU

#Coding #Openai #Programming

[Mark Williamson @mark_undoio]

If you're writing C / C++ and you've not tried a modern time travel debugger then you're missing out.

[Undo @undo_io]

Check out our new C & C++ debugging tutorial using the Undo Visual Studio Code Extension!

How To Debug C++ & C in VS Code - Debugging Race Conditions

https://t.co/7Nk9v77b2S

#Cplusplus #Cpp #Vscode

[Mark Williamson @mark_undoio]

There's also some good predictions for what I might do in future - maybe I can take those as a plan for the year!

[Mark Williamson @mark_undoio]

Guilty!: https://t.co/EpsJCCWsHl

- Spends so much time talking about time travel debugging, [...] dreams in reverse chronological order
- [...] used GDB more times than most people have used their smartphone

[Mark Williamson @mark_undoio]

- Could write a PhD thesis on debugging [...] prints 'Hello World' when testing new languages

[The Cultural Tutor @culturaltutor]

This is the American Radiator Building, a 101 year old black and gold skyscraper that's half Gothic, half Art Deco.

It's famous, but not as famous as it should be — so here's a brief history of one of the world's coolest skyscrapers...

[Mark Williamson @mark_undoio]

@culturaltutor The instant I saw the American Radiator building it became my favourite skyscraper in New York. I also go looking for it in Open World video games but am generally disappointed :-(

[Mark Williamson @mark_undoio]

@Glaucous_Noise @ID_AA_Carmack Huh, I actually wouldn't have expected a substantial slowdown from the debugger on one of those - do you have any idea where the performance is lost? Is it also an unoptimised build?

[Mark Williamson @mark_undoio]

@Glaucous_Noise @ID_AA_Carmack Ah, what language? Compiled language debuggers generally get pretty close to zero overhead because of how they're implemented - but other runtimes choose a different tradeoff. Ideally all languages would have a zero overhead debugger but it does create some challenges.

[Windows @Windows]

computer

[Mark Williamson @mark_undoio]

@Andrath1975 @ID_AA_Carmack The annoying thing about "optimized out" is that it makes it harder to reason about some parts of the program - I think compilers don't always generate the quality of debug information to reason well about this stuff (but being able to inspect it at all is an improvement on not!)

[Mark Williamson @mark_undoio]

@Lyle__Pro @ID_AA_Carmack You can use a time travel debugger to capture a recording, then get it back out of K8s and debug it offline.

[Mark Williamson @mark_undoio]

@eeuoss @meow464_ @ID_AA_Carmack The Golang ecosystem has got this more right, I think - debug info built into binaries unless you opt out.

[Mark Williamson @mark_undoio]

@eeuoss @meow464_ @ID_AA_Carmack Over time I've come to quite like the GDB command line interface - it's not perfect but actually the core command set is quite small and fairly consistent. But your point about building with -g is interesting - it's not even just the debugger, it's the whole ecosystem.