🚀 Novo no blog: Enviando sinais para threads ou processos no POSIX

Exploro como enviar sinais em POSIX: uso de pthread_kill() para verificar se uma thread está “viva” (com sig = 0) ou para enviar sinais efetivamente; e alternativa mais rica com pthread_sigqueue(), que permite anexar dados ao sinal como sigqueue(), mas direcionado a threads, não ao processo. Leia mais: https://danieltak.com.br/posts/os/enviar-sinal-pthread/

#POSIX #pthread #Signals #Linux #Programacao #Dev #danieltak

Still working on #swad, and currently very busy with improving quality, most of the actual work done inside my #poser library.

After finally supporting #kqueue and #epoll, I now integrated #xxhash to completely replace my previous stupid and naive hashing. I also added a more involved #dictionary class as an alternative to the already existing #hashtable. While the hashtable's size must be pre-configured and collissions are only ever resolved by storing linked lists, the new dictionary dynamically nests multiple hashtables (using different bits of a single hash value). I hope to achieve acceptable scaling while maintaining also acceptable memory overhead that way ...

#swad already uses both container classes as appropriate.

Next I'll probably revisit poser's #threadpool. I think I could replace #pthread condition variables by "simple" #semaphores, which should also reduce overhead ...

https://github.com/Zirias/swad

#c #coding

Los mutex permiten solucionar el problema de las race condition en programación concurrente. En este articulo te explico como usarlos correctamente.

https://www.lateclaescape.com/post/2025/mutex/

#Mutex #raceconditions #pthread #concurrencia

Now that I'm several days into removing pthread from Darknet/YOLO I can finally comment on the image data loading process.

Both how it is currently implemented, and what I'm doing to change it.

A short thread into one of the "darker" portions of the Darknet/YOLO codebase...

#darknet #yolo #cpp #pthread

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