<?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>117150</bug_id>
          
          <creation_ts>2013-06-03 08:41:17 -0700</creation_ts>
          <short_desc>[GTK] Migrate WebKitCookieManager to GTask</short_desc>
          <delta_ts>2013-06-19 00:14:06 -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>WebKitGTK</component>
          <version>528+ (Nightly build)</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>RESOLVED</bug_status>
          <resolution>FIXED</resolution>
          
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords>Gtk</keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          <blocked>117149</blocked>
          <everconfirmed>1</everconfirmed>
          <reporter name="Carlos Garcia Campos">cgarcia</reporter>
          <assigned_to name="Nobody">webkit-unassigned</assigned_to>
          <cc>commit-queue</cc>
    
    <cc>danw</cc>
    
    <cc>gustavo</cc>
    
    <cc>mrobinson</cc>
    
    <cc>xan.lopez</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>896460</commentid>
    <comment_count>0</comment_count>
    <who name="Carlos Garcia Campos">cgarcia</who>
    <bug_when>2013-06-03 08:41:17 -0700</bug_when>
    <thetext>Migrate WebKitCookieManager to GTask</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>896466</commentid>
    <comment_count>1</comment_count>
      <attachid>203594</attachid>
    <who name="Carlos Garcia Campos">cgarcia</who>
    <bug_when>2013-06-03 08:46:46 -0700</bug_when>
    <thetext>Created attachment 203594
Patch</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>896467</commentid>
    <comment_count>2</comment_count>
    <who name="WebKit Commit Bot">commit-queue</who>
    <bug_when>2013-06-03 08:48:21 -0700</bug_when>
    <thetext>Thanks for the patch. If this patch contains new public API please make sure it follows the guidelines for new WebKit2 GTK+ API. See http://trac.webkit.org/wiki/WebKitGTK/AddingNewWebKit2API</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>896528</commentid>
    <comment_count>3</comment_count>
      <attachid>203594</attachid>
    <who name="Dan Winship">danw</who>
    <bug_when>2013-06-03 10:27:50 -0700</bug_when>
    <thetext>Comment on attachment 203594
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=203594&amp;action=review

&gt; Source/WebKit2/UIProcess/API/gtk/WebKitCookieManager.cpp:193
&gt; -    if (g_simple_async_result_propagate_error(simpleResult, error))
&gt; -        return WEBKIT_COOKIE_POLICY_ACCEPT_NO_THIRD_PARTY;
&gt; +    g_return_val_if_fail(g_task_is_valid(result, manager), WEBKIT_COOKIE_POLICY_ACCEPT_NO_THIRD_PARTY);
&gt;  
&gt; -    GetAcceptPolicyAsyncData* data = static_cast&lt;GetAcceptPolicyAsyncData*&gt;(g_simple_async_result_get_op_res_gpointer(simpleResult));
&gt; -    return static_cast&lt;WebKitCookieAcceptPolicy&gt;(data-&gt;policy);
&gt; +    return static_cast&lt;WebKitCookieAcceptPolicy&gt;(g_task_propagate_int(G_TASK(result), error));

This means that on error you are now returning -1 rather than WEBKIT_COOKIE_POLICY_ACCEPT_NO_THIRD_PARTY. I suppose the API only worked before if the caller checked the error first anyway, so maybe this doesn&apos;t matter. You could get the old behavior back by checking g_task_had_error() explicitly. (I&apos;d been thinking about having either g_task_propagate_enum(), or else g_task_propagate_int_with_default(), to deal with this problem...)

&gt; Source/WebKit2/UIProcess/API/gtk/WebKitCookieManager.cpp:215
&gt; +    g_task_return_pointer(task.get(), returnValue.get(), reinterpret_cast&lt;GDestroyNotify&gt;(g_ptr_array_unref));

Hm... returnValue is a GRefPtr, so doesn&apos;t that mean will get g_ptr_array_free()ed when this function exits? That&apos;s wrong; you need to hand over ownership of the pointer to the GTask, so that it can free it itself at the appropriate time. But you&apos;re doing that as well, so the data is going to get freed twice... It looks like the old version had a .leakRef() in _finish which you lost. It would be better to leak the ref when calling g_task_return_pointer() anyway; the caller doesn&apos;t necessarily have to call the _finish function right away, so the array needs to live as long as the task does.

Well, and also, there&apos;s no particularly good reason to do the GPtrArray -&gt; char** conversion in _finish rather than here...

So I think how it should work is, here you do:

  g_task_return_pointer(task.get(), g_ptr_array_free(returnValue.leakRef(), FALSE), reinterpret_cast&lt;GDestroyNotify&gt;(g_strfreev));

and then in _finish, just do

  return g_task_propagate_pointer(G_TASK(result), error);</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>896551</commentid>
    <comment_count>4</comment_count>
      <attachid>203594</attachid>
    <who name="Carlos Garcia Campos">cgarcia</who>
    <bug_when>2013-06-03 11:16:41 -0700</bug_when>
    <thetext>Comment on attachment 203594
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=203594&amp;action=review

&gt;&gt; Source/WebKit2/UIProcess/API/gtk/WebKitCookieManager.cpp:193
&gt;&gt; +    return static_cast&lt;WebKitCookieAcceptPolicy&gt;(g_task_propagate_int(G_TASK(result), error));
&gt; 
&gt; This means that on error you are now returning -1 rather than WEBKIT_COOKIE_POLICY_ACCEPT_NO_THIRD_PARTY. I suppose the API only worked before if the caller checked the error first anyway, so maybe this doesn&apos;t matter. You could get the old behavior back by checking g_task_had_error() explicitly. (I&apos;d been thinking about having either g_task_propagate_enum(), or else g_task_propagate_int_with_default(), to deal with this problem...)

Good catch, the user should indeed check the error, we were returning WEBKIT_COOKIE_POLICY_ACCEPT_NO_THIRD_PARTY before to use a valid WebKitCookieAcceptPolicy, because it&apos;s the default one. I&apos;ll update it.

&gt;&gt; Source/WebKit2/UIProcess/API/gtk/WebKitCookieManager.cpp:215
&gt;&gt; +    g_task_return_pointer(task.get(), returnValue.get(), reinterpret_cast&lt;GDestroyNotify&gt;(g_ptr_array_unref));
&gt; 
&gt; Hm... returnValue is a GRefPtr, so doesn&apos;t that mean will get g_ptr_array_free()ed when this function exits? That&apos;s wrong; you need to hand over ownership of the pointer to the GTask, so that it can free it itself at the appropriate time. But you&apos;re doing that as well, so the data is going to get freed twice... It looks like the old version had a .leakRef() in _finish which you lost. It would be better to leak the ref when calling g_task_return_pointer() anyway; the caller doesn&apos;t necessarily have to call the _finish function right away, so the array needs to live as long as the task does.
&gt; 
&gt; Well, and also, there&apos;s no particularly good reason to do the GPtrArray -&gt; char** conversion in _finish rather than here...
&gt; 
&gt; So I think how it should work is, here you do:
&gt; 
&gt;   g_task_return_pointer(task.get(), g_ptr_array_free(returnValue.leakRef(), FALSE), reinterpret_cast&lt;GDestroyNotify&gt;(g_strfreev));
&gt; 
&gt; and then in _finish, just do
&gt; 
&gt;   return g_task_propagate_pointer(G_TASK(result), error);

Not exactly, GRefPtr calls g_ptr_arry_unref not _free, but what I didn&apos;t know is that free also decreases the reference counter. Your proposal is indeed less confusing and cleaner, I&apos;ll do that, thanks!</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>896760</commentid>
    <comment_count>5</comment_count>
      <attachid>203660</attachid>
    <who name="Carlos Garcia Campos">cgarcia</who>
    <bug_when>2013-06-04 00:39:34 -0700</bug_when>
    <thetext>Created attachment 203660
Updated patch according to review comments</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>896856</commentid>
    <comment_count>6</comment_count>
      <attachid>203660</attachid>
    <who name="Dan Winship">danw</who>
    <bug_when>2013-06-04 06:11:27 -0700</bug_when>
    <thetext>Comment on attachment 203660
Updated patch according to review comments

everything looks good to me</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>901675</commentid>
    <comment_count>7</comment_count>
    <who name="Carlos Garcia Campos">cgarcia</who>
    <bug_when>2013-06-19 00:14:06 -0700</bug_when>
    <thetext>Committed r151723: &lt;http://trac.webkit.org/changeset/151723&gt;</thetext>
  </long_desc>
      
          <attachment
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              ispatch="1"
              isprivate="0"
          >
            <attachid>203594</attachid>
            <date>2013-06-03 08:46:46 -0700</date>
            <delta_ts>2013-06-04 00:39:34 -0700</delta_ts>
            <desc>Patch</desc>
            <filename>wk2-gtask-cookie-manager.diff</filename>
            <type>text/plain</type>
            <size>8914</size>
            <attacher name="Carlos Garcia Campos">cgarcia</attacher>
            
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          </attachment>
          <attachment
              isobsolete="0"
              ispatch="1"
              isprivate="0"
          >
            <attachid>203660</attachid>
            <date>2013-06-04 00:39:34 -0700</date>
            <delta_ts>2013-06-17 06:38:00 -0700</delta_ts>
            <desc>Updated patch according to review comments</desc>
            <filename>wk2-gtask-cookies2.diff</filename>
            <type>text/plain</type>
            <size>8774</size>
            <attacher name="Carlos Garcia Campos">cgarcia</attacher>
            
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</data>
<flag name="review"
          id="225126"
          type_id="1"
          status="+"
          setter="gustavo"
    />
          </attachment>
      

    </bug>

</bugzilla>