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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/205823">205823</a></dd>
<dt>Author</dt> <dd>cdumez@apple.com</dd>
<dt>Date</dt> <dd>2016-09-12 14:23:12 -0700 (Mon, 12 Sep 2016)</dd>
</dl>
<h3>Log Message</h3>
<pre>window.performance object resets script-applied properties
https://bugs.webkit.org/show_bug.cgi?id=137407
Reviewed by Darin Adler.
Source/WebCore:
Make sure the window.performance wrapper stays alive for as long as the
associated frame, similarly to what we do for window.screen.
Test: fast/performance/performance-object-gc.html
* page/Performance.idl:
LayoutTests:
Add layout test coverage.
* fast/performance/performance-object-gc-expected.txt: Added.
* fast/performance/performance-object-gc.html: Added.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkLayoutTestsChangeLog">trunk/LayoutTests/ChangeLog</a></li>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCorepagePerformanceidl">trunk/Source/WebCore/page/Performance.idl</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li><a href="#trunkLayoutTestsfastperformanceperformanceobjectgcexpectedtxt">trunk/LayoutTests/fast/performance/performance-object-gc-expected.txt</a></li>
<li><a href="#trunkLayoutTestsfastperformanceperformanceobjectgchtml">trunk/LayoutTests/fast/performance/performance-object-gc.html</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkLayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/ChangeLog (205822 => 205823)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/ChangeLog 2016-09-12 21:13:09 UTC (rev 205822)
+++ trunk/LayoutTests/ChangeLog 2016-09-12 21:23:12 UTC (rev 205823)
</span><span class="lines">@@ -1,3 +1,15 @@
</span><ins>+2016-09-12 Chris Dumez <cdumez@apple.com>
+
+ window.performance object resets script-applied properties
+ https://bugs.webkit.org/show_bug.cgi?id=137407
+
+ Reviewed by Darin Adler.
+
+ Add layout test coverage.
+
+ * fast/performance/performance-object-gc-expected.txt: Added.
+ * fast/performance/performance-object-gc.html: Added.
+
</ins><span class="cx"> 2016-09-12 Jer Noble <jer.noble@apple.com>
</span><span class="cx">
</span><span class="cx"> Fix failing mediasource-play.html and mediasource-config-change-mp4-v-bitrate.html tests
</span></span></pre></div>
<a id="trunkLayoutTestsfastperformanceperformanceobjectgcexpectedtxt"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/fast/performance/performance-object-gc-expected.txt (0 => 205823)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/fast/performance/performance-object-gc-expected.txt (rev 0)
+++ trunk/LayoutTests/fast/performance/performance-object-gc-expected.txt 2016-09-12 21:23:12 UTC (rev 205823)
</span><span class="lines">@@ -0,0 +1,16 @@
</span><ins>+Tests that the Performance wrapper stays alive for as long as its frame.
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS window.performance.__proto__ is Performance.prototype
+PASS window.performance.customProperty is undefined.
+window.performance.customProperty = 1
+PASS window.performance.customProperty is 1
+PASS window.performance.customProperty is 1
+PASS window.performance.customProperty is 1
+PASS window.performance.customProperty is 1
+PASS successfullyParsed is true
+
+TEST COMPLETE
+
</ins></span></pre></div>
<a id="trunkLayoutTestsfastperformanceperformanceobjectgchtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/fast/performance/performance-object-gc.html (0 => 205823)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/fast/performance/performance-object-gc.html (rev 0)
+++ trunk/LayoutTests/fast/performance/performance-object-gc.html 2016-09-12 21:23:12 UTC (rev 205823)
</span><span class="lines">@@ -0,0 +1,31 @@
</span><ins>+<!DOCTYPE html>
+<html>
+<body>
+<script src="../../resources/js-test-pre.js"></script>
+<script>
+description("Tests that the Performance wrapper stays alive for as long as its frame.");
+jsTestIsAsync = true;
+
+shouldBe("window.performance.__proto__", "Performance.prototype");
+shouldBeUndefined("window.performance.customProperty");
+evalAndLog("window.performance.customProperty = 1");
+shouldBe("window.performance.customProperty", "1");
+gc();
+shouldBe("window.performance.customProperty", "1");
+
+onload = function() {
+ gc();
+ shouldBe("window.performance.customProperty", "1");
+ setTimeout(checkAndFinish, 0);
+}
+
+function checkAndFinish()
+{
+ gc();
+ shouldBe("window.performance.customProperty", "1");
+ finishJSTest();
+}
+</script>
+<script src="../../resources/js-test-post.js"></script>
+</body>
+</html>
</ins></span></pre></div>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (205822 => 205823)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog 2016-09-12 21:13:09 UTC (rev 205822)
+++ trunk/Source/WebCore/ChangeLog 2016-09-12 21:23:12 UTC (rev 205823)
</span><span class="lines">@@ -1,3 +1,17 @@
</span><ins>+2016-09-12 Chris Dumez <cdumez@apple.com>
+
+ window.performance object resets script-applied properties
+ https://bugs.webkit.org/show_bug.cgi?id=137407
+
+ Reviewed by Darin Adler.
+
+ Make sure the window.performance wrapper stays alive for as long as the
+ associated frame, similarly to what we do for window.screen.
+
+ Test: fast/performance/performance-object-gc.html
+
+ * page/Performance.idl:
+
</ins><span class="cx"> 2016-09-12 Saam Barati <sbarati@apple.com>
</span><span class="cx">
</span><span class="cx"> Add WebKit support for an option in Safari's debug menu similar to "Get Bytecode Profile" but for the Sampling Profiler's data
</span></span></pre></div>
<a id="trunkSourceWebCorepagePerformanceidl"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/page/Performance.idl (205822 => 205823)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/page/Performance.idl 2016-09-12 21:13:09 UTC (rev 205822)
+++ trunk/Source/WebCore/page/Performance.idl 2016-09-12 21:23:12 UTC (rev 205823)
</span><span class="lines">@@ -32,6 +32,7 @@
</span><span class="cx"> // See: https://dvcs.w3.org/hg/webperf/raw-file/tip/specs/NavigationTiming/Overview.html
</span><span class="cx"> [
</span><span class="cx"> Conditional=WEB_TIMING,
</span><ins>+ GenerateIsReachable=ImplFrame,
</ins><span class="cx"> ] interface Performance : EventTarget {
</span><span class="cx"> readonly attribute PerformanceNavigation navigation;
</span><span class="cx"> readonly attribute PerformanceTiming timing;
</span></span></pre>
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