From: machenbach@chromium.org <machenbach@chromium.org@ce2b1a6d-e550-0410-aec6-3dcde31c8c00>
Date: Wed, 25 Sep 2013 16:47:56 +0000 (+0000)
Subject: Let timer test retry for 20ms to reduce flakiness.
X-Git-Tag: upstream/4.7.83~12301
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9fd455872caa9218b66a7951b5280c820b6c2d3a;p=platform%2Fupstream%2Fv8.git

Let timer test retry for 20ms to reduce flakiness.

BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/24484003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16948 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
---

diff --git a/test/mjsunit/timer.js b/test/mjsunit/timer.js
index 9b8dc29..be7a561 100644
--- a/test/mjsunit/timer.js
+++ b/test/mjsunit/timer.js
@@ -27,9 +27,20 @@
 
 // Tests timer milliseconds granularity.
 
-var start = Date.now();
-var end = Date.now();
-while (end - start == 0) {
-  end = Date.now();
-}
-assertTrue(end - start <= 2);
+(function run() {
+  var start_test = Date.now();
+  // Let the retry run for maximum 20ms to reduce flakiness.
+  for (var start = Date.now(); start - start_test < 100; start = Date.now()) {
+    var end = Date.now();
+    while (end - start == 0) {
+      end = Date.now();
+    }
+    if (end - start == 1) {
+      // Found milliseconds granularity.
+      return;
+    } else {
+      print("Timer difference too big: " + (end - start) + "ms");
+    }
+  }
+  assertTrue(false);
+})()