From bcdd228f90b3e9e428b584814e7d52627616456a Mon Sep 17 00:00:00 2001
From: James M Snell <jasnell@gmail.com>
Date: Mon, 7 Jan 2019 11:36:35 -0800
Subject: perf_hooks: implement histogram based api

Add a sampling-based event loop delay monitor.

```js
const { monitorEventLoopDelay } = require('perf_hooks');

const h = monitorEventLoopDelay();

h.enable();

h.disable();

console.log(h.percentiles);
console.log(h.min);
console.log(h.max);
console.log(h.mean);
console.log(h.stddev);
console.log(h.percentile(50));
```

PR-URL: https://github.com/nodejs/node/pull/25378
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
---
 node.gypi | 1 +
 1 file changed, 1 insertion(+)

(limited to 'node.gypi')

diff --git a/node.gypi b/node.gypi
index d4b3c9c8d7d..7d6ff06128a 100644
--- a/node.gypi
+++ b/node.gypi
@@ -233,6 +233,7 @@
     [ 'OS=="aix"', {
       'defines': [
         '_LINUX_SOURCE_COMPAT',
+        '__STDC_FORMAT_MACROS'
       ],
       'conditions': [
         [ 'force_load=="true"', {
-- 
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