Simon Sapin <simon.sapin@octobus.net> [Tue, 05 Jan 2021 21:46:21 +0100] rev 46590
copies-rust: send PyBytes values back be dropped ino the parent thread
… instead of acquiring the GIL in the Rust thread in the Drop impl
This commit is based on the premise that crossbeam-channel
with unbounded send and non-blocking receive is faster than
a contended GIL, but that remains to be measured.
Differential Revision: https://phab.mercurial-scm.org/D9686
Simon Sapin <simon-commits@exyr.org> [Thu, 26 Nov 2020 18:23:51 +0100] rev 46589
copies-rust: introduce PyBytesWithData to reduce GIL requirement
See explanations in new doc-comments.
Differential Revision: https://phab.mercurial-scm.org/D9685
Simon Sapin <simon.sapin@octobus.net> [Wed, 06 Jan 2021 14:09:01 +0100] rev 46588
copies-rust: move CPU-heavy Rust processing into a child thread
… that runs in parallel with the parent thread fetching data.
This can be disabled through a new config. CLI example:
hg --config=devel.copy-tracing.multi-thread=no
For now both threads use the GIL, later commits will reduce this.
Differential Revision: https://phab.mercurial-scm.org/D9684