From 99a2dd03cd286176d639ec898a08f27c1567f85c Mon Sep 17 00:00:00 2001
From: Bartosz Sosnowski <bartosz@janeasystems.com>
Date: Fri, 16 Sep 2016 12:31:22 +0200
Subject: [PATCH] benchmark: add --expose_internals switch

Adds --expose_internals switch to benchmark runner. This makes
misc/freelist.js benchmark run properly

Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Andreas Madsen <amwebdk@gmail.com>
PR-URL: https://github.com/nodejs/node/pull/8547
---
 benchmark/common.js        | 3 ++-
 benchmark/misc/freelist.js | 5 ++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/benchmark/common.js b/benchmark/common.js
index adc04a0b80..495d6fdf36 100644
--- a/benchmark/common.js
+++ b/benchmark/common.js
@@ -137,7 +137,8 @@ Benchmark.prototype._run = function() {
     }
 
     const child = child_process.fork(require.main.filename, childArgs, {
-      env: childEnv
+      env: childEnv,
+      execArgv: ['--expose_internals'].concat(process.execArgv)
     });
     child.on('message', sendResult);
     child.on('close', function(code) {
diff --git a/benchmark/misc/freelist.js b/benchmark/misc/freelist.js
index 7956dc3d6b..a2732c9bc8 100644
--- a/benchmark/misc/freelist.js
+++ b/benchmark/misc/freelist.js
@@ -1,13 +1,16 @@
 'use strict';
 
 var common = require('../common.js');
-var FreeList = require('internal/freelist').FreeList;
 
 var bench = common.createBenchmark(main, {
   n: [100000]
 });
 
 function main(conf) {
+  // Using internal/freelist requires node to be run with --expose_internals
+  // switch. common.js will do that when calling main(), so we require
+  // this module here
+  const FreeList = require('internal/freelist').FreeList;
   var n = conf.n;
   var poolSize = 1000;
   var list = new FreeList('test', poolSize, Object);