timers: use uv_now instead of Date.now

This saves a few calls to gettimeofday which can be expensive, and
potentially subject to clock drift. Instead use the loop time which
uses hrtime internally.

fixes #5497

1 files changed, 3 insertions, 1 deletions

diff --git a/lib/tls.js b/lib/tls.js
index 3af078a966e..cc71bd97618 100644
--- a/lib/tls.js
+++ b/lib/tls.js
@@ -28,6 +28,8 @@ var stream = require('stream');
 var assert = require('assert').ok;
 var constants = require('constants');
 
+var Timer = process.binding('timer_wrap').Timer;
+
 var DEFAULT_CIPHERS = 'ECDHE-RSA-AES128-SHA256:AES128-GCM-SHA256:' + // TLS 1.2
                       'RC4:HIGH:!MD5:!aNULL:!EDH';                   // TLS 1.0
 
@@ -720,7 +722,7 @@ function onhandshakestart() {
 
   var self = this;
   var ssl = self.ssl;
-  var now = Date.now();
+  var now = Timer.now();
 
   assert(now >= ssl.lastHandshakeTime);