<?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>232068</bug_id>
          
          <creation_ts>2021-10-21 01:23:40 -0700</creation_ts>
          <short_desc>StreamConnectionWorkQueue is not thread-safe</short_desc>
          <delta_ts>2021-10-22 01:19:14 -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>WebKit2</component>
          <version>WebKit Local Build</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>FIXED</resolution>
          
          <see_also>https://bugs.webkit.org/show_bug.cgi?id=231970</see_also>
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords>InRadar</keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          <blocked>231970</blocked>
          <everconfirmed>1</everconfirmed>
          <reporter name="Kimmo Kinnunen">kkinnunen</reporter>
          <assigned_to name="Kimmo Kinnunen">kkinnunen</assigned_to>
          <cc>kkinnunen</cc>
    
    <cc>webkit-bug-importer</cc>
    
    <cc>wenson_hsieh</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1807039</commentid>
    <comment_count>0</comment_count>
    <who name="Kimmo Kinnunen">kkinnunen</who>
    <bug_when>2021-10-21 01:23:40 -0700</bug_when>
    <thetext>StreamConnectionWorkQueue is not thread-safe

It should be since RemoteRenderingBackend/RemoteDisplayListRecorder implementation is running on it and they add receivers.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1807041</commentid>
    <comment_count>1</comment_count>
      <attachid>441995</attachid>
    <who name="Kimmo Kinnunen">kkinnunen</who>
    <bug_when>2021-10-21 01:35:29 -0700</bug_when>
    <thetext>Created attachment 441995
Patch</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1807171</commentid>
    <comment_count>2</comment_count>
      <attachid>441995</attachid>
    <who name="Wenson Hsieh">wenson_hsieh</who>
    <bug_when>2021-10-21 08:43:10 -0700</bug_when>
    <thetext>Comment on attachment 441995
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=441995&amp;action=review

&gt; Source/WebKit/Platform/IPC/StreamConnectionWorkQueue.cpp:38
&gt; +    // `StreamConnectionWorkQueue::stop()` should be called if anything has been dispatched or listened to.

Should this also assert `m_shouldQuit`?</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1807567</commentid>
    <comment_count>3</comment_count>
    <who name="Kimmo Kinnunen">kkinnunen</who>
    <bug_when>2021-10-22 00:50:35 -0700</bug_when>
    <thetext>(In reply to Wenson Hsieh from comment #2)
&gt; Should this also assert `m_shouldQuit`?

No, it&apos;s ok to create the work queue and never start it and then destroy.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1807578</commentid>
    <comment_count>4</comment_count>
    <who name="EWS">ews-feeder</who>
    <bug_when>2021-10-22 01:18:24 -0700</bug_when>
    <thetext>Committed r284671 (243391@main): &lt;https://commits.webkit.org/243391@main&gt;

All reviewed patches have been landed. Closing bug and clearing flags on attachment 441995.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1807579</commentid>
    <comment_count>5</comment_count>
    <who name="Radar WebKit Bug Importer">webkit-bug-importer</who>
    <bug_when>2021-10-22 01:19:14 -0700</bug_when>
    <thetext>&lt;rdar://problem/84540490&gt;</thetext>
  </long_desc>
      
          <attachment
              isobsolete="0"
              ispatch="1"
              isprivate="0"
          >
            <attachid>441995</attachid>
            <date>2021-10-21 01:35:29 -0700</date>
            <delta_ts>2021-10-22 01:18:25 -0700</delta_ts>
            <desc>Patch</desc>
            <filename>bug-232068-20211021113528.patch</filename>
            <type>text/plain</type>
            <size>6139</size>
            <attacher name="Kimmo Kinnunen">kkinnunen</attacher>
            
              <data encoding="base64">U3VidmVyc2lvbiBSZXZpc2lvbjogMjg0NTkxCmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViS2l0L0No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</data>

          </attachment>
      

    </bug>

</bugzilla>