From 0b99cb1913a6eaeb731e7b3d640facd174f26b94 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=A1=D0=BA=D0=BE=D0=B2=D0=BE=D1=80=D0=BE=D0=B4=D0=B0=20?=
 =?UTF-8?q?=D0=9D=D0=B8=D0=BA=D0=B8=D1=82=D0=B0=20=D0=90=D0=BD=D0=B4=D1=80?=
 =?UTF-8?q?=D0=B5=D0=B5=D0=B2=D0=B8=D1=87?= <chalkerx@gmail.com>
Date: Fri, 2 Aug 2019 17:10:30 +0300
Subject: [PATCH] process: add .initialEventLoop

PR-URL: https://github.com/nodejs/node/pull/28941
---
 lib/internal/bootstrap/node.js | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/lib/internal/bootstrap/node.js b/lib/internal/bootstrap/node.js
index aa166cc931b94f..3d778ed4f22caa 100644
--- a/lib/internal/bootstrap/node.js
+++ b/lib/internal/bootstrap/node.js
@@ -92,6 +92,22 @@ const rawMethods = internalBinding('process_methods');
   };
 }
 
+{
+  let perf_hooks;
+  let initialEventLoop = true;
+  ObjectDefineProperty(process, 'initialEventLoop', {
+    enumerable: true,
+    configurable: false,
+    get() {
+      if (initialEventLoop) {
+        if (!perf_hooks) perf_hooks = require('perf_hooks');
+        initialEventLoop = perf_hooks.performance.nodeTiming.loopStart < 0;
+      }
+      return initialEventLoop;
+    }
+  });
+}
+
 const credentials = internalBinding('credentials');
 if (credentials.implementsPosixCredentials) {
   process.getuid = credentials.getuid;