Max Sherman 2330843fa7 Add API for instrumentation to learn the starting wall time of bg threads ...

Summary: Computing things like "page faults since this thread was created" or "cpu time spent on this thread since it was created" is pretty easy - just measure it when you want it.  However, if you want to know "how much wall time has elapsed since this thread was created" you need to record some timing info when the thread is created.  This diff adds a an API for querying that from the RN thread holder abstraction.

Reviewed By: alexeylang

Differential Revision: D13246235

fbshipit-source-id: d36af61dbe27f662980fe508b2644e9d5255bb7e

2018-12-03 11:50:36 -08:00

..

androidTest

0.87.0 in xplat/js

2018-11-28 17:32:50 -08:00

main

Add API for instrumentation to learn the starting wall time of bg threads

2018-12-03 11:50:36 -08:00

test/java

Remove unused loads from xplat.

2018-11-14 10:51:15 -08:00