<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<!DOCTYPE bugzilla SYSTEM "https://bugs.webkit.org/page.cgi?id=bugzilla.dtd">

<bugzilla version="5.0.4.1"
          urlbase="https://bugs.webkit.org/"
          
          maintainer="admin@webkit.org"
>

    <bug>
          <bug_id>201018</bug_id>
          
          <creation_ts>2019-08-21 18:41:43 -0700</creation_ts>
          <short_desc>Migrate from m_layoutTimer to scheduled rendering updates</short_desc>
          <delta_ts>2020-03-10 23:03:02 -0700</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>Layout and Rendering</component>
          <version>WebKit Nightly Build</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>NEW</bug_status>
          <resolution></resolution>
          
          <see_also>https://bugs.webkit.org/show_bug.cgi?id=201019</see_also>
    
    <see_also>https://bugs.webkit.org/show_bug.cgi?id=208780</see_also>
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords></keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          <blocked>202843</blocked>
          <everconfirmed>1</everconfirmed>
          <reporter name="Simon Fraser (smfr)">simon.fraser</reporter>
          <assigned_to name="Nobody">webkit-unassigned</assigned_to>
          <cc>bfulgham</cc>
    
    <cc>koivisto</cc>
    
    <cc>rniwa</cc>
    
    <cc>sabouhallawa</cc>
    
    <cc>simon.fraser</cc>
    
    <cc>zalan</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1563882</commentid>
    <comment_count>0</comment_count>
    <who name="Simon Fraser (smfr)">simon.fraser</who>
    <bug_when>2019-08-21 18:41:43 -0700</bug_when>
    <thetext>Now that we have the rendering update mechanism (RenderingUpdateScheduler), we should remove m_layoutTimer and just call scheduleRenderingUpdate().

I see extra layouts in traces from the layout timer, which never make it to the screen because something else dirties layout before the next update.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1563886</commentid>
    <comment_count>1</comment_count>
    <who name="alan">zalan</who>
    <bug_when>2019-08-21 18:49:29 -0700</bug_when>
    <thetext>(In reply to Simon Fraser (smfr) from comment #0)
&gt; Now that we have the rendering update mechanism (RenderingUpdateScheduler),
&gt; we should remove m_layoutTimer and just call scheduleRenderingUpdate().
&gt; 
&gt; I see extra layouts in traces from the layout timer, which never make it to
&gt; the screen because something else dirties layout before the next update.
This is great! (though having multiple layouts within the same update does not necessarily mean redundant work.)</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>