sidkshatriya

8 ms·

91.
Record/Replay Debugging Tutorial(github.com)
3 points by sidkshatriya 1y ago|1 comments
92.
by sidkshatriya 1y ago
How to record/replay and debug a program using reverse debugging through a small example program written in C.
93.
by sidkshatriya 1y ago
It's very important for both the compiler tools chains of go to continue working well for redundancy and feature design validation purposes. However, I'm generally curious -- do people / organizations use gcc-go for some use
94.
by sidkshatriya 1y ago
fish is amazing. I use it as my primary shell. But for writing scripts I would reach for Elvish/Nushell. More powerful.
95.
by sidkshatriya 1y ago
The shell prompt is also a small interface. How your shell responds to tab autocomplete, provides suggestions etc. can be quite helpful. Here I just like the way fish suggests filenames, provides an underline for filenames that exist and so
96.
by sidkshatriya 1y ago
nushell vs Elvish The Nushell and Elvish scripting languages are similar in many ways. I personally find the "shell" experience better in Nushell than Elvish. Nushell - Bigger community and more contributors - Bigger feature set t
97.
by sidkshatriya 1y ago
I don't use Elvish daily (I use fish) but writing scripts in Elvish is a great experience. The elvish executable can serve as an LSP server and that makes writing Elvish scripts a bit easier. I don't care much for the Elvish shell
98.
by sidkshatriya 1y ago
> It just shows the mindset of its devs was a little behind the realities of the industry, or they simply didn't care about concurrency. OCaml cared about concurrency (e.g. Lwt, Async are old libraries that provide concurrency -- th
99.
by sidkshatriya 1y ago
Would you rather have a HFT trade go correctly and a few nanoseconds slower or a few nanoseconds faster but with some edge case bugs related to variable initialisation ? You might claim that that you can have both but bugs are more inevitab
100.
by sidkshatriya 2y ago
TL;DR Your dad's PHP is no longer the current PHP. The language itself has been thoroughly modernized, made more consistent, bug free and performant. There is nothing better than a piece of software that keeps getting improved decade a
101.
by sidkshatriya 2y ago
A good way to penalize planned obsolescence would be to charge a decreasing penalty if the goods are recycled/disposed earlier. So if I return the fridge for recycling after a couple of years (bad fridge) then the company gets charged
102.
by sidkshatriya 2y ago
This is a good design. The company that manufactures the product does not need to be necessarily responsible for the cleanup. The cleanup is done by another company and the costs are added on customer checkout. But this is open to abuse as
103.
by sidkshatriya 2y ago
This is a fair and valid view of looking at things. Though the trick is to not get too heavy handed. At what point does regulation become too stifling ? The American way is to possibly put too few responsibilities on manufacturers. The Euro
104.
by sidkshatriya 2y ago
You should not discuss politics with friends. You should however discuss politics with close friends -- they probably got close to you because you both share a worldview or they like hearing your worldview (even if it differs from yours
105.
Dealing with GitHub Jealously (2021)(github.com)
1 points by sidkshatriya 2y ago|1 comments
106.
by sidkshatriya 2y ago
Probably not at the moment. _Software Counter mode_ rr requires robust support for debuginfod in your Linux distribution. NixOS to my knowledge does not provide debuginfo via a dedicated debuginfod server for all packages so this will mak
107.
by sidkshatriya 2y ago
It's very difficult for a broad based record/replay software like rr to exist for macOS in my opinion. macOS system interfaces are quite basic in terms of functionality compared to Linux and increasingly locked down. rr uses many
108.
by sidkshatriya 2y ago
rr and Gdb are very DWARF debugging focussed. As long as Haskell has only basic DWARF debugging support I wonder how much rr/gdb can do. Though I do see a lot of promise in the future. rr can help make premature evaluation (many expres
109.
by sidkshatriya 2y ago
Thanks for the encouraging words! Please do try it out and report back if it worked well or not for you on the issue tracker. With sufficient usage I think we can make a good case to get merged upstream. This patch introduces dynamic/s
110.
by sidkshatriya 2y ago
Tough to say right now. Here is a long answer: https://github.com/sidkshatriya/rr.soft?tab=readme-ov-file#w...
111.
by sidkshatriya 2y ago
Any gdb integration scripts for Python to get stack frames etc. should work fine in rr and Software Counters Mode rr. `rr replay` and (the software counters equivalent) `rr replay -W` invokes gdb.
112.
by sidkshatriya 2y ago
Yes, io_uring is still not supported due to fundamental issues in the overall rr architecture which my modification does not resolve. My modification only addresses the HW counter requirement of upstream rr and the other core aspects of rr
113.
by sidkshatriya 2y ago
rr has always worked with Python in the sense that it can record and replay Python programs. However, when you try to debug the program you can only debug the C code the Python interpreter is written in. I suppose you want to be able to deb
114.
by sidkshatriya 2y ago
I've not used Pernosco but I am generally aware of it. My guess is that Pernosco would need to be technically modified to support recordings that have "soft ticks" i.e. use Software Counters. I don't see any compelling r
115.
by sidkshatriya 2y ago
Good suggestion. Added to the TL;DR section of the blog post !
116.
by sidkshatriya 2y ago
Author here. Yes there are some tradeoffs: - Performance: slower than using rr with HW counters. Both dynamic and static instrumentation employed by _Software Counter mode_ rr slow things down - Potential fragility: Dynamic and static instr
117.
by sidkshatriya 2y ago
What happened to Swift ? I used to hear so much about it -- now not so much. Maybe I'm in my echo chamber ?
118.
Bringing Record and Replay debugging everywhere on Linux(github.com)
209 points by sidkshatriya 2y ago|28 comments
119.
Bringing and Record and Replay everywhere(github.com)
1 points by sidkshatriya 2y ago|1 comments
120.
by sidkshatriya 2y ago
_Software Counters mode_ `rr` is a reverse debugger built upon the awesome `rr` debugger. It relaxes one major limitation with the `rr` debugger - it does NOT require access to CPU HW performance counters. This allows the debugger to run in

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