Commits on Mar 16, 2021

1. worker: add eventLoopUtilization() …

   Allow calling eventLoopUtilization() directly on a worker thread:
   
       const worker = new Worker('./foo.js');
       const elu = worker.performance.eventLoopUtilization();
       setTimeout(() => {
         worker.performance.eventLoopUtilization(elu);
       }, 10);
   
   Add a new performance object on the Worker instance that will hopefully
   one day hold all the other performance metrics, such as nodeTiming.
   
   Include benchmarks and tests.
   
   PR-URL: nodejs#35664
   Reviewed-By: Juan José Arboleda <soyjuanarbol@gmail.com>
   Reviewed-By: Anna Henningsen <anna@addaleax.net>
   Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>
   Reviewed-By: James M Snell <jasnell@gmail.com>
   
   Backport-PR-URL: nodejs#37165

   

   trevnorris authored and richardlau committed Mar 16, 2021
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2. test: correct test-worker-eventlooputil …

   The active worker check compared the time from sending message till
   response arrived from worker with the complete time the worker was
   running till it responses to the spin request.
   
   If sending back the message is slow for some reason the test fails.
   
   Adapt the test to compare the time seen inside the worker with the
   time read from main thread.
   
   PR-URL: nodejs#35891
   Fixes: nodejs#35844
   Refs: nodejs#35886
   Refs: nodejs#35664
   Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
   Reviewed-By: Rich Trott <rtrott@gmail.com>
   
   Backport-PR-URL: nodejs#37165

   

   Flarna authored and richardlau committed Mar 16, 2021
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