Summary: This diff implements encapsulating all time metrics in a single class for better extensibility and readability.
Reviewed By: JoshuaGross
Differential Revision: D15179835
fbshipit-source-id: 62bdf94435a0d37a87ad9bad613cc8e38043a235
Summary:
Previously we computed the list of nodes that need to be notified about layout changes using a list of mutation instructions. That was fine, but that's not really compatible with some other changes that I plan to make, so I decided to change it (make it better).
Besides the better design (debatable; fewer dependencies to unrelated moving pieces), here is why I believe the new way is more performant:
* The new approach has no `dynamic_casts`, whereas the previous has tons of them (two per a mutation). If a `dynamic_cast` takes 10 ns, for 500 nodes it can take up to 5ms only for casts. (Non-scientific assumption.)
* After removing dependency to mutation instruction, we can enable flattening for views which have `onLayout` event.
Reviewed By: mdvacca
Differential Revision: D15110725
fbshipit-source-id: 31a657ccfd02441734ad1d71a833653223163289
Summary:
Trivial.
Apparently, `DEBUG` is non-standard feature and using `assert` with `DEBUG` is practically asking for bugs. So, if your `assert` relies on some variable which is only defined when `DEBUG` is set, it's easy to get invalid code because NDEBUG and DEBUG can be unsync.
So, we have to use clunky double negative `#ifndef NDEBUG` everywhere where we used DEBUG.
Reviewed By: JoshuaGross
Differential Revision: D15031328
fbshipit-source-id: 036f573e68925741ca46384261885766c87db1e3
Summary:
`MountingTransaction` encapsulates all artifacts of `ShadowTree` commit, particularly list of mutations and meta-data.
We will rely on this heavily in the coming diffs.
Reviewed By: JoshuaGross
Differential Revision: D15021795
fbshipit-source-id: 811da7afd7b929a34a81aa66566193d46bbc34f8
Summary:
We suspect that we have some error in diffing algorithm that cause some crashes in mounting layer, so we decided to write a comprehensive unit tests for that.
Writing them we realized that it would be cool to also enable that for normal app run in the debug more, so we can catch the problem in real environment when/if it happens.
Reviewed By: mdvacca
Differential Revision: D14587123
fbshipit-source-id: 6dcdf451b39489dec751cd6787de33f3b8ffb3fd
Summary: Because it's kinda more logical and we will rely on this in comming diffs.
Reviewed By: mdvacca
Differential Revision: D14587124
fbshipit-source-id: 94ae9410b4ffeffd0fcb4da4a0518f0bb0d2ba63
Valentin Shergin