On Monday, 21 June 2021 19:31:59 CEST Jonathan Wakely via Gcc-patches wrote:
> diff --git a/libstdc++-v3/include/std/mutex b/libstdc++-v3/include/std/mutex
> index d4c5d13f654..5f2d8f9ee7b 100644
> --- a/libstdc++-v3/include/std/mutex
> +++ b/libstdc++-v3/include/std/mutex
> @@ -512,47 +512,44 @@ _
The current std::lock algorithm is the one called "persistent" in Howard
Hinnant's https://howardhinnant.github.io/dining_philosophers.html post.
While it tends to perform acceptably fast, it wastes a lot of CPU cycles
by continuously locking and unlocking the uncontended mutexes.
Effectively, it's
