benchmark: fix child-process-read on Windows

Under Windows 'ipc' communication requires the other process to format
its messages with 'IPC framing protocol'. Otherwise, an assert is
triggered in libuv. This commit changes child-process-read benchmark
to use stdout to communicate with parent process. It also adds
child-process-read-ipc.js to benchmark IPC communication using
child node process.

PR-URL: https://github.com/nodejs/node/pull/6971
Reviewed-By: João Reis <reis@janeasystems.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

1 files changed, 10 insertions, 3 deletions

diff --git a/benchmark/child_process/child-process-read.js b/benchmark/child_process/child-process-read.js
index 33c268390f..b0128eb796 100644
--- a/benchmark/child_process/child-process-read.js
+++ b/benchmark/child_process/child-process-read.js
@@ -1,7 +1,14 @@
 'use strict';
 const common = require('../common.js');
+const os = require('os');
+
+var messagesLength = [64, 256, 1024, 4096];
+// Windows does not support that long arguments
+if (os.platform() !== 'win32')
+  messagesLength.push(32768);
+
 const bench = common.createBenchmark(main, {
-  len: [64, 256, 1024, 4096, 32768],
+  len: messagesLength,
   dur: [5]
 });
 
@@ -13,11 +20,11 @@ function main(conf) {
   const len = +conf.len;
 
   const msg = '"' + Array(len).join('.') + '"';
-  const options = {'stdio': ['ignore', 'ipc', 'ignore']};
+  const options = { 'stdio': ['ignore', 'pipe', 'ignore'] };
   const child = spawn('yes', [msg], options);
 
   var bytes = 0;
-  child.on('message', function(msg) {
+  child.stdout.on('data', function(msg) {
     bytes += msg.length;
   });