Exceptions are expensive and I hope no body uses it in the hot path (80%). The c... | Hacker News

Hacker Newsnew | past | comments | ask | show | jobs | submit

		arunc on Feb 11, 2020 \| parent \| context \| favorite \| on: Investigating the Performance Overhead of C++ Exce... Exceptions are expensive and I hope no body uses it in the hot path (80%). The compiler has to inject a lot of code to unwind the stack that affects the cache. It is however not expensive for common operations (20%). There are couple of threads in dforum that discusses this and to have throw attribute [1] and eventually making nothrow as default [2]. [1] https://forum.dlang.org/thread/sbdrybtyfkxfhxxjgqco@forum.dl... [2] https://forum.dlang.org/post/qur0l0$2h8s$1@digitalmars.com

josefx on Feb 11, 2020 [–]

Why do you link to forum entries from dlang on a c++ exception topic? Is the implementation identical or at least somewhat similar?

mhh__ on Feb 11, 2020 | [–]

D is evolved from a C++ compiler, and can - in principle, it's a question of priorities I believe, catch C++ exceptions

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact