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How do you debug a segmentation fault inside a large C #macro?
Here's how you can debug a lengthy #define. You will need to know a full object build string in your build tool (VERBOSE=1 make if you're using cmake), and install GNU indent.
Then:
cc -E file.c | grep -v '^#' | indent > out
mv out file.c
make # rebuild your project with the new file
Now it's easy to see what part of a macro is causing the -
Concurrent programming is difficult
Pursuing your vision is difficult. Especially, if this vision is a multi-threaded in-memory database ( Read more... ) -
Inotify_add_watch/inotify_rm_watch perofrmance depends on the path
Why is /tmp so much slower? The filesystem is the same (ext4). My only guess is that it has so many events that inotify_rm_watch has to do a lot of work to clear them.
gist.github.com/kostja/3990427faa32d9d5befd -
Один из участников нашего проекта написал письмо про мудаков. Поможет или нет не знаю, но repost
Originally posted by unera at Открытое письмо президенту РФ об информационной политике
В современном мире так сложилось, что институт частной собственности временами выступает мотором для развития общества, а временами - тормозом ( Read more... ) -
Urgent and important vs. anything else
Making people do what you want them to do is impossible. They seem to always do what *they* want to do.
Do we need syntax highlighting in the command line client? Probably. Do we need it now? Definitely not.
But do we need colors in the *test runner*? Yeah, in 2025, perhaps! But we do have it now. And there is nothing I can do about it. Except ( Read more... ) -
Performance of stdarg.h
Most discussions I was able to find online about functions with variable number of arguments in C and C++ focus on syntax and type safety. Perhaps it has to do with C++11 support of such functions. But how much are they actually slower?
I wrote a small test to find out:
https://github.com/kostja/snippets/blob/master/stdarg.ckostja@olah ~/ ( Read more... ) -
Launchpad bug tracker
The issue tracker on our source code host, GitHub, has matured enough for the team to make a decision to moveIt's probably not the best idea to criticize a free home for an open source project, after all, Launchpad wasn't making any money from hosting us, but, truth be said, and perhaps lack of business model is the reason, it has fallen behind in ( Read more... ) -
New algorithm for taking snapshot in Tarantool
Just merged in a patch which I think gives Tarantool one more small but important edge over any other free in-memory database on the market ( Read more... )