https://smeso.it/Mon, 04 Mar 2024 19:00:00 +0100https://smeso.it/2024/03/04/memory-ordering-and-atomic-operations-synchronization.html<p>Every time I need to play with atomic variables and I try to be clever and optimize them as much as possible I need to re-learn what the various memory ordering options do. It doesn't help that memory ordering is easily one of the most complex topics I ever worked with. For this reason I decided to finally write down what I (think) I know about memory ordering, making it easier for the future me …</p>smesoMon, 04 Mar 2024 19:00:00 +0100tag:smeso.it,2024-03-04:/2024/03/04/memory-ordering-and-atomic-operations-synchronization.htmlTechnicalccpprustatomicconcurrencymemorymemory-orderingmemory-modelmemory-barrierlow-latencyoptimizationhttps://smeso.it/2024/03/03/clickhouse-dont-roll-your-own-crypto.html<p>ClickHouse is a column-oriented database management system that is designed for high-performance analytics. It is known for its speed and efficiency in processing large volumes of data, making it a popular choice for companies looking to analyze massive datasets in real-time.</p> <p>(the above text was written by some AI, because I couldn't be bothered to think of anything, but I promise I'll write the rest of the post myself, maybe)</p> <p>Working as a CH contributor …</p>smesoSun, 03 Mar 2024 15:22:00 +0100tag:smeso.it,2024-03-03:/2024/03/03/clickhouse-dont-roll-your-own-crypto.htmlTechnicalclickhousesecuritycryptographyrngvulnerabilitycpphttps://smeso.it/2024/03/02/mips-stacktrace-an-unexpected-journey.html<p>Automatically receiving a stacktrace when your C program crashes isn't rocket science. But this time it was more difficult than I expected. This is a short recollection of the things I found out few years ago. This post assumes that the reader has some basic knowledge about functions' calling conventions, CPU registers, and assembly.</p> <h1>Some context</h1> <p>A C program running on Linux was randomly crashing on one specific embedded device deployed on the other side …</p>smesoSat, 02 Mar 2024 14:30:00 +0100tag:smeso.it,2024-03-02:/2024/03/02/mips-stacktrace-an-unexpected-journey.htmlTechnicalmipsembeddedglibcgccstacktraceCassemblybacktracelibgcchttps://smeso.it/2017/10/06/hello-world.html<p>This is my first post!</p>smesoFri, 06 Oct 2017 10:42:00 +0200tag:smeso.it,2017-10-06:/2017/10/06/hello-world.htmlNewsself-referential