News for hackers. Stuff that matters.

A comment on Building a Cloud Database from Scratch: Why We Moved from C++ to Rust. Parent comment

Re:Building a Cloud Database from Scratch: Why We Moved from... by lenkite on Friday May 27, 2022 @11:33PM (#31537378)
This is basically memory arenas right ? How does one handle problems as described here https://www.celonis.com/blog/c-memory-arenas-and-their-impli..., where memory appears to not be returned to the OS ?
[ Parent | on HN ]
Re:Building a Cloud Database from Scratch: Why We Moved from... by Thorrez on Saturday May 28, 2022 @02:23AM (#31538044)
In that blog, the arena is managed by the underlying library, and the programmer has no control over when memory is returned, and sometimes the underlying library keeps the memory around when the programmer doesn't want it to. It sounds like cyber_kinetist is talking about manually managing the arena, so then the programmer is in direct control of when the memory is returned, so the problem won't happen.
[ Parent | on HN ]