Commit Graph
9 Commits
Author SHA1 Message Date
Valentin Shergin 5a418c5a5d Fabric: Fixed a bug in Diffing algorithm
Summary: Before the fix, the algorithm compares ShadowViews to make a decision should it recursively call itself or not; that didn't work properly because a ShadowView doesn't fully represent the state of the subtree tree (e.g. they don't have information about children nodes). After the fix, we compare pointers to ShadowNodes (by comparing pairs).

Reviewed By: mdvacca

Differential Revision: D14696996

fbshipit-source-id: 560d623b15a272f13b08a11745dec6be39a5dbdd
2019-03-30 12:21:54 -07:00
Valentin Shergin 28e89e5081 Fabric: ShadowNodeFamily, the first steps
Summary:
ShadowNodeFamily is a new concept that allows us to implement an efficient way to solve the problem of finding a path to some ancestor node (practically reimplement ShadowNode::constructAncestorPath() in some efficient way).

This diff is the first one in the series. It introduces a new class and moves some data into it.

Reviewed By: JoshuaGross

Differential Revision: D14416947

fbshipit-source-id: c93865a8929a2128498e34d3589487696aac6283
2019-03-18 23:56:13 -07:00
Valentin Shergin 56501dcc47 Fabric: Changing the shape of ShadowViewNodePair class
Summary:
I am not sure why it compiled before, it clearly should not, IMO. The `const` types (and references!) are not allowed inside `std::vector` because they are not assignable.
Some experiments that I did caused compilation errors here, so I am changing that to be actually correct.

Reviewed By: JoshuaGross

Differential Revision: D14249199

fbshipit-source-id: 07a22ef13f5de9dfc7ab307493419e6006994bc2
2019-03-04 10:00:01 -08:00
David Vacca 95c414cfbf Introduce "updateProps" field InsertMutation
Summary: This diff introduces the concept of "updateProps" as part of InsertMutation and it changes the diffing algorithm to populate this field.

Reviewed By: shergin

Differential Revision: D14289608

fbshipit-source-id: 642f00d03d294a12ea7fa7482c72e701b756f3d4
2019-03-03 09:00:47 -08:00
Valentin Shergin 77838b5504 Fabric: Systraces are back
Summary:
It's better to comment `DWITH_FBSYSTRACE` out in BUCK files instead of removing them from the code.
I'll publish the BUCK changes as separate diff for simpler backout in the future.

Reviewed By: mdvacca

Differential Revision: D14019272

fbshipit-source-id: 8b322b5c115efe33c15929e008b97a05220813df
2019-02-11 16:01:05 -08:00
Valentin Shergin fd3b8f2000 Fabric: Introducing Better: For faster, clear and ideomatic codebase
Summary:
`Better` is a trivial collection of basic tools borrowed from other low-level general purpose libraries (like Folly, Abseil or Boost). The main goals of Better:
 - Make the codebase more portable;
 - Make the dependency list explicit (by decoupling it as a dependency list of Better);
 - Make relying on modern C++ patterns and tools in code simple and easy.
 - Make executing experiments with different dependencies easier.

 As a first example usage, this diff replaces std::unordered_map with an efficient one from folly on the one of the hottest paths.

Reviewed By: JoshuaGross

Differential Revision: D13944565

fbshipit-source-id: 5fa2c4abe6c17f7361eddcc25f968b6440d5d9db
2019-02-08 13:57:33 -08:00
David Vacca 842b9c106a Temporary remove systraces from Fabric core code
Summary: This is a temporary change to measure production data

Reviewed By: fkgozali

Differential Revision: D13906807

fbshipit-source-id: 2a2f71aa379c4aca63c7bb4a9644704f713cb088
2019-02-02 13:08:06 -08:00
Valentin Shergin cb14b06309 Fabric: More systraces for Diffing and Commit phase
Summary: Trivial.

Reviewed By: mdvacca

Differential Revision: D13644482

fbshipit-source-id: 90cfa04797682e57fc4de009fe4a412167b9e8cd
2019-01-11 18:13:55 -08:00
Valentin Shergin 62173a1569 Introducing fabric/mounting module
Summary:
ShadowView, ShadowViewMutation, and Differentiator were decoupled to separate module.
That enables us to use ShadowView more widely without facing a circular dependency problem.

Reviewed By: mdvacca

Differential Revision: D13205229

fbshipit-source-id: 7373864bf153a7813c2f97edb263a41454ce0b88
2018-11-27 18:34:14 -08:00