Summary:
Previously, we stored `keyIndex_` in a Parser object which is incorrect because it makes the parsing process thread-unsafe (the Parser is shared between parsing processes).
That worked previously most of the time because we never parsed props concurrently but we actually do this in the native animation library.
Reviewed By: yungsters
Differential Revision: D16064557
fbshipit-source-id: 211f4301d0746e0f5126a1dcdd59f1ae9a420aa9
Summary:
This diff reimplements the prop parsing infrastructure in a part where it interacts with RawProps value.
Local synthetic tests show that the new way is 3x faster but the actual production result is quite unpredictable. MobileLab tests show some improvements about 10-20 ms on iPhone 6.
In short, the new way is faster because it inverts the lookup order and heavily relies on actual data types (and their properties) that we use. The old approach required about 130 hash-map lookups (where the key is `std::string`) to parse a single *Props object.
The new approach prepares concrete-props-specific tables with indexes of coming values ahead of time, iterates over raw data and puts it into those tables, and then performs a lookup in a very efficient manner.
Reviewed By: JoshuaGross
Differential Revision: D15752968
fbshipit-source-id: 847106e652eb7fc7ef7b99884a6f819ea3b9fd06
Valentin Shergin