perf_hooks: make PerformanceObserver an AsyncResource

PR-URL: #18789
Reviewed-By: Ali Ijaz Sheikh <ofrobots@google.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>

Author: jasnell

lib/perf_hooks.js

@@ -36,6 +36,7 @@ const {
   NODE_PERFORMANCE_MILESTONE_PRELOAD_MODULE_LOAD_END
 } = constants;
 
+const { AsyncResource } = require('async_hooks');
 const L = require('internal/linkedlist');
 const kInspect = require('internal/util').customInspectSymbol;
 const { inherits } = require('util');
@@ -317,12 +318,13 @@ class PerformanceObserverEntryList {
   }
 }
 
-class PerformanceObserver {
+class PerformanceObserver extends AsyncResource {
   constructor(callback) {
     if (typeof callback !== 'function') {
       const errors = lazyErrors();
       throw new errors.TypeError('ERR_INVALID_CALLBACK');
     }
+    super('PerformanceObserver');
     Object.defineProperties(this, {
       [kTypes]: {
         enumerable: false,
@@ -568,7 +570,7 @@ function getObserversList(type) {
 
 function doNotify() {
   this[kQueued] = false;
-  this[kCallback](this[kBuffer], this);
+  this.runInAsyncScope(this[kCallback], this, this[kBuffer], this);
   this[kBuffer][kEntries] = [];
   L.init(this[kBuffer][kEntries]);
 }