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List:       kde-panel-devel
Subject:    Re: Review Request 115326: fix theme cache cleanup and discarding
From:       "Aaron J. Seigo" <aseigo () kde ! org>
Date:       2014-01-29 13:50:38
Message-ID: 20140129135038.20274.66122 () probe ! kde ! org
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this patch doesn't actually improve anything. in fact, the actual bug is left:

 pixmapCache = new KImageCache(pixmapCacheFileName, config.themeCacheKb() * 1024);

pixmapCacheFileName should have the version # in it. this was an oversight on my part \
when fixing br320855 in 59e88c777b92935cc95f28e52f84fe97563dec9d

this patch should not go in as is, but instead have the cache file name ammended to \
include the version information.


plasma/theme.cpp
<https://git.reviewboard.kde.org/r/115326/#comment34304>

    it's nice to clean up the svg elements files; however without an active cache \
file it doesn't matter and they are a couple dozen K in size. didn't seem worth it \
for cache directory maintenance.  
    leaving them on disk would result them in them being used again if the user \
installs a newer version of the theme, then later rolls back to an older version. \
however, given that the svg file should be tied to the version of the theme, all this \
accomplishes is having to re-calculate all the svg geometry data.  
    i don't see the point in doing this at all.



plasma/theme.cpp
<https://git.reviewboard.kde.org/r/115326/#comment34301>

    discardCache can take both PixmapCache and SvgElementsCache. in fact, calling it \
in this fashion will result in the cache first being invalidated and THEN deleted \
from disk.  
    this should not even be necessary, however: if the cache is removed, then the svg \
elements also are removed.



plasma/theme.cpp
<https://git.reviewboard.kde.org/r/115326/#comment34302>

    by creating the pixmap cache here, the above calls to discardCache won't really \
be doing anything as they act on the pixmapCache .. unless they delete the file from \
disk in which it doesn't matter.  
    iow, you've got a very complex way of doing:
    
    QFile::remove(pixmapCacheFileName);
    pixmapCache = new KImageCache(pixmapCacheFileName, config.themeCacheKb() * 1024);


- Aaron J. Seigo


On Jan. 28, 2014, 9:18 a.m., Harald Sitter wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/115326/
> -----------------------------------------------------------
> 
> (Updated Jan. 28, 2014, 9:18 a.m.)
> 
> 
> Review request for Plasma, Aaron J. Seigo and Martin Klapetek.
> 
> 
> Repository: kdelibs
> 
> 
> Description
> -------
> 
> - introduce svgelements cache handling in useCache()
> - to decide whether or not to discard a cache type now the mtimes of \
> metadata.desktop and the respective cache file are compared (previously this was an \
>                 invalid file compared to cache change time)
> - cache cleanup now happens entirely before creation of the KImageCache instance to \
> prevent any sort of problem there 
> - add fixme comment about broken version-based cache handling. for one the version \
> specific file name is not actually used for the KImageCache and for another the \
> entire shebang is missing from svgelements all together. this has the very \
> unfortunate side effect that the *active* cache files are deleted ever so often, it \
> may be worth removing the code portions until someone finds time/interest to \
> actually implement this in a working fashion. 
> 
> Diffs
> -----
> 
> plasma/theme.cpp cb44878 
> 
> Diff: https://git.reviewboard.kde.org/r/115326/diff/
> 
> 
> Testing
> -------
> 
> upgraded from 4.8 straight to 4.12 -> theme caches correctly discarded
> 
> 
> Thanks,
> 
> Harald Sitter
> 
> 


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 <pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: \
-pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">this patch doesn&#39;t \
actually improve anything. in fact, the actual bug is left:

 pixmapCache = new KImageCache(pixmapCacheFileName, config.themeCacheKb() * 1024);

pixmapCacheFileName should have the version # in it. this was an oversight on my part \
when fixing br320855 in 59e88c777b92935cc95f28e52f84fe97563dec9d

this patch should not go in as is, but instead have the cache file name ammended to \
include the version information.</pre>  <br />







<div>




<table width="100%" border="0" bgcolor="white" style="border: 1px solid #C0C0C0; \
border-collapse: collapse; margin: 2px padding: 2px;">  <thead>
  <tr>
   <th colspan="4" bgcolor="#F0F0F0" style="border-bottom: 1px solid #C0C0C0; \
font-size: 9pt; padding: 4px 8px; text-align: left;">  <a \
href="https://git.reviewboard.kde.org/r/115326/diff/3/?file=240803#file240803line273" \
style="color: black; font-weight: bold; text-decoration: \
underline;">plasma/theme.cpp</a>  <span style="font-weight: normal;">

     (Diff revision 3)

    </span>
   </th>
  </tr>
 </thead>

 <tbody style="background-color: #e4d9cb; padding: 4px 8px; text-align: center;">
  <tr>

   <td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">const \
char *ThemePrivate::systemColorsTheme = \
&quot;internal-system-colors&quot;;</pre></td>

  </tr>
 </tbody>



 
 

 <tbody>

  <tr>
    <th bgcolor="#e9eaa8" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2">248</font></th>  <td bgcolor="#fdfebc" width="50%"><pre \
style="font-size: 8pt; line-height: 140%; margin: 0; ">        <span \
class="p">}</span></pre></td>  <th bgcolor="#e9eaa8" style="border-left: 1px solid \
#C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font \
size="2">270</font></th>  <td bgcolor="#fdfebc" width="50%"><pre style="font-size: \
8pt; line-height: 140%; margin: 0; ">            <span class="c1">// Repeat for SVG \
caches.</span></pre></td>  </tr>

  <tr>
    <th bgcolor="#e9eaa8" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2">249</font></th>  <td bgcolor="#fdfebc" width="50%"><pre \
style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>  <th \
bgcolor="#e9eaa8" style="border-left: 1px solid #C0C0C0; border-right: 1px solid \
#C0C0C0;" align="right"><font size="2">271</font></th>  <td bgcolor="#fdfebc" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">            \
<span class="n">foreach</span> <span class="p">(</span><span class="k">const</span> \
<span class="n">QString</span> <span class="o">&amp;</span><span \
class="n">file</span><span class="p">,</span> <span class="n">KGlobal</span><span \
class="o">::</span><span class="n">dirs</span><span class="p">()</span><span \
class="o">-&gt;</span><span class="n">findAllResources</span><span \
class="p">(</span><span class="s">&quot;cache&quot;</span><span class="p">,</span> \
<span class="n">svgCacheFileBase</span><span class="p">))</span> <span \
class="p">{</span></pre></td>  </tr>

  <tr>
    <th bgcolor="#e9eaa8" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2">250</font></th>  <td bgcolor="#fdfebc" width="50%"><pre \
style="font-size: 8pt; line-height: 140%; margin: 0; ">        <span \
class="n">ThemeConfig</span> <span class="n">config</span><span \
class="p">;</span></pre></td>  <th bgcolor="#e9eaa8" style="border-left: 1px solid \
#C0C0C0; border-right: 1px solid #C0C0C0;" align="right"><font \
size="2">272</font></th>  <td bgcolor="#fdfebc" width="50%"><pre style="font-size: \
8pt; line-height: 140%; margin: 0; ">                <span class="k">if</span> <span \
class="p">(</span><span class="n">currentSvgCacheFileName</span><span \
class="p">.</span><span class="n">isEmpty</span><span class="p">()</span> <span \
class="o">||</span> <span class="o">!</span><span class="n">file</span><span \
class="p">.</span><span class="n">endsWith</span><span class="p">(</span><span \
class="n">currentSvgCacheFileName</span><span class="p">))</span> <span \
class="p">{</span></pre></td>  </tr>

  <tr>
    <th bgcolor="#e9eaa8" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2">251</font></th>  <td bgcolor="#fdfebc" width="50%"><pre \
style="font-size: 8pt; line-height: 140%; margin: 0; ">        <span \
class="n">pixmapCache</span> <span class="o">=</span> <span class="k">new</span> \
<span class="n">KImageCache</span><span class="p">(</span><span \
class="n">cacheFile</span><span class="p">,</span> <span class="n">config</span><span \
class="p">.</span><span class="n">themeCacheKb</span><span class="p">()</span> <span \
class="o">*</span> <span class="mi">1024</span><span class="p">);</span></pre></td>  \
<th bgcolor="#e9eaa8" style="border-left: 1px solid #C0C0C0; border-right: 1px solid \
#C0C0C0;" align="right"><font size="2">273</font></th>  <td bgcolor="#fdfebc" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">              \
<span class="n">QFile</span><span class="o">::</span><span \
class="n">remove</span><span class="p">(</span><span class="n">file</span><span \
class="p">);</span></pre></td>  </tr>

 </tbody>

</table>

<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; \
white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">it&#39;s \
nice to clean up the svg elements files; however without an active cache file it \
doesn&#39;t matter and they are a couple dozen K in size. didn&#39;t seem worth it \
for cache directory maintenance.

leaving them on disk would result them in them being used again if the user installs \
a newer version of the theme, then later rolls back to an older version. however, \
given that the svg file should be tied to the version of the theme, all this \
accomplishes is having to re-calculate all the svg geometry data.

i don&#39;t see the point in doing this at all.</pre>
</div>
<br />

<div>




<table width="100%" border="0" bgcolor="white" style="border: 1px solid #C0C0C0; \
border-collapse: collapse; margin: 2px padding: 2px;">  <thead>
  <tr>
   <th colspan="4" bgcolor="#F0F0F0" style="border-bottom: 1px solid #C0C0C0; \
font-size: 9pt; padding: 4px 8px; text-align: left;">  <a \
href="https://git.reviewboard.kde.org/r/115326/diff/3/?file=240803#file240803line291" \
style="color: black; font-weight: bold; text-decoration: \
underline;">plasma/theme.cpp</a>  <span style="font-weight: normal;">

     (Diff revision 3)

    </span>
   </th>
  </tr>
 </thead>

 <tbody style="background-color: #e4d9cb; padding: 4px 8px; text-align: center;">
  <tr>

   <td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">const \
char *ThemePrivate::systemColorsTheme = \
&quot;internal-system-colors&quot;;</pre></td>

  </tr>
 </tbody>



 
 

 <tbody>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2"></font></th>  <td bgcolor="#c5ffc4" width="50%"><pre \
style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>  <th \
bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid \
#C0C0C0;" align="right"><font size="2">286</font></th>  <td bgcolor="#c5ffc4" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">              \
<span class="n">KStandardDirs</span><span class="o">::</span><span \
class="n">locate</span><span class="p">(</span><span \
class="s">&quot;cache&quot;</span><span class="p">,</span> <span \
class="n">pixmapCacheFileName</span><span class="p">);</span></pre></td>  </tr>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2"></font></th>  <td bgcolor="#c5ffc4" width="50%"><pre \
style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>  <th \
bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid \
#C0C0C0;" align="right"><font size="2">287</font></th>  <td bgcolor="#c5ffc4" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">              \
<span class="k">const</span> <span class="n">QFileInfo</span> <span \
class="nf">pixmapCacheFileInfo</span><span class="p">(</span><span \
class="n">pixmapCacheFilePath</span><span class="p">);</span></pre></td>  </tr>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2"></font></th>  <td bgcolor="#c5ffc4" width="50%"><pre \
style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>  <th \
bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid \
#C0C0C0;" align="right"><font size="2">288</font></th>  <td bgcolor="#c5ffc4" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">              \
<span class="k">if</span> <span class="p">(</span><span \
class="n">metaDataFileInfo</span><span class="p">.</span><span \
class="n">lastModified</span><span class="p">().</span><span \
class="n">toTime_t</span><span class="p">()</span> <span class="o">&gt;</span> <span \
class="n">pixmapCacheFileInfo</span><span class="p">.</span><span \
class="n">lastModified</span><span class="p">().</span><span \
class="n">toTime_t</span><span class="p">())</span> <span \
class="p">{</span></pre></td>  </tr>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2"></font></th>  <td bgcolor="#c5ffc4" width="50%"><pre \
style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>  <th \
bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid \
#C0C0C0;" align="right"><font size="2">289</font></th>  <td bgcolor="#c5ffc4" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">              \
<span class="n">discardCache</span><span class="p">(</span><span \
class="n">PixmapCache</span><span class="p">);</span></pre></td>  </tr>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2"></font></th>  <td bgcolor="#c5ffc4" width="50%"><pre \
style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>  <th \
bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid \
#C0C0C0;" align="right"><font size="2">290</font></th>  <td bgcolor="#c5ffc4" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">              \
<span class="p">}</span></pre></td>  </tr>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2"></font></th>  <td bgcolor="#c5ffc4" width="50%"><pre \
style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>  <th \
bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid \
#C0C0C0;" align="right"><font size="2">291</font></th>  <td bgcolor="#c5ffc4" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>  \
</tr>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2"></font></th>  <td bgcolor="#c5ffc4" width="50%"><pre \
style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>  <th \
bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid \
#C0C0C0;" align="right"><font size="2">292</font></th>  <td bgcolor="#c5ffc4" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">              \
<span class="k">const</span> <span class="n">QString</span> <span \
class="n">svgCacheFilePath</span> <span class="o">=</span></pre></td>  </tr>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2"></font></th>  <td bgcolor="#c5ffc4" width="50%"><pre \
style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>  <th \
bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid \
#C0C0C0;" align="right"><font size="2">293</font></th>  <td bgcolor="#c5ffc4" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">              \
<span class="n">KStandardDirs</span><span class="o">::</span><span \
class="n">locate</span><span class="p">(</span><span \
class="s">&quot;cache&quot;</span><span class="p">,</span> <span \
class="n">svgCacheFileName</span><span class="p">);</span></pre></td>  </tr>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2"></font></th>  <td bgcolor="#c5ffc4" width="50%"><pre \
style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>  <th \
bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid \
#C0C0C0;" align="right"><font size="2">294</font></th>  <td bgcolor="#c5ffc4" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">              \
<span class="k">const</span> <span class="n">QFileInfo</span> <span \
class="nf">svgCacheFileInfo</span><span class="p">(</span><span \
class="n">svgCacheFilePath</span><span class="p">);</span></pre></td>  </tr>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2"></font></th>  <td bgcolor="#c5ffc4" width="50%"><pre \
style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>  <th \
bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid \
#C0C0C0;" align="right"><font size="2">295</font></th>  <td bgcolor="#c5ffc4" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">              \
<span class="k">if</span> <span class="p">(</span><span \
class="n">metaDataFileInfo</span><span class="p">.</span><span \
class="n">lastModified</span><span class="p">().</span><span \
class="n">toTime_t</span><span class="p">()</span> <span class="o">&gt;</span> <span \
class="n">svgCacheFileInfo</span><span class="p">.</span><span \
class="n">lastModified</span><span class="p">().</span><span \
class="n">toTime_t</span><span class="p">())</span> <span \
class="p">{</span></pre></td>  </tr>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2"></font></th>  <td bgcolor="#c5ffc4" width="50%"><pre \
style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>  <th \
bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid \
#C0C0C0;" align="right"><font size="2">296</font></th>  <td bgcolor="#c5ffc4" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">              \
<span class="n">discardCache</span><span class="p">(</span><span \
class="n">SvgElementsCache</span><span class="p">);</span></pre></td>  </tr>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2"></font></th>  <td bgcolor="#c5ffc4" width="50%"><pre \
style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>  <th \
bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid \
#C0C0C0;" align="right"><font size="2">297</font></th>  <td bgcolor="#c5ffc4" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">              \
<span class="p">}</span></pre></td>  </tr>

 </tbody>

</table>

<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; \
white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: \
break-word;">discardCache can take both PixmapCache and SvgElementsCache. in fact, \
calling it in this fashion will result in the cache first being invalidated and THEN \
deleted from disk.

this should not even be necessary, however: if the cache is removed, then the svg \
elements also are removed.</pre> </div>
<br />

<div>




<table width="100%" border="0" bgcolor="white" style="border: 1px solid #C0C0C0; \
border-collapse: collapse; margin: 2px padding: 2px;">  <thead>
  <tr>
   <th colspan="4" bgcolor="#F0F0F0" style="border-bottom: 1px solid #C0C0C0; \
font-size: 9pt; padding: 4px 8px; text-align: left;">  <a \
href="https://git.reviewboard.kde.org/r/115326/diff/3/?file=240803#file240803line306" \
style="color: black; font-weight: bold; text-decoration: \
underline;">plasma/theme.cpp</a>  <span style="font-weight: normal;">

     (Diff revision 3)

    </span>
   </th>
  </tr>
 </thead>

 <tbody style="background-color: #e4d9cb; padding: 4px 8px; text-align: center;">
  <tr>

   <td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">const \
char *ThemePrivate::systemColorsTheme = \
&quot;internal-system-colors&quot;;</pre></td>

  </tr>
 </tbody>



 
 

 <tbody>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2"></font></th>  <td bgcolor="#c5ffc4" width="50%"><pre \
style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>  <th \
bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid \
#C0C0C0;" align="right"><font size="2">301</font></th>  <td bgcolor="#c5ffc4" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">        <span \
class="n">ThemeConfig</span> <span class="n">config</span><span \
class="p">;</span></pre></td>  </tr>

  <tr>
    <th bgcolor="#b1ebb0" style="border-right: 1px solid #C0C0C0;" \
align="right"><font size="2"></font></th>  <td bgcolor="#c5ffc4" width="50%"><pre \
style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>  <th \
bgcolor="#b1ebb0" style="border-left: 1px solid #C0C0C0; border-right: 1px solid \
#C0C0C0;" align="right"><font size="2">302</font></th>  <td bgcolor="#c5ffc4" \
width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">        <span \
class="n">pixmapCache</span> <span class="o">=</span> <span class="k">new</span> \
<span class="n">KImageCache</span><span class="p">(</span><span \
class="n">pixmapCacheFileName</span><span class="p">,</span> <span \
class="n">config</span><span class="p">.</span><span \
class="n">themeCacheKb</span><span class="p">()</span> <span class="o">*</span> <span \
class="mi">1024</span><span class="p">);</span></pre></td>  </tr>

 </tbody>

</table>

<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; \
white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">by creating \
the pixmap cache here, the above calls to discardCache won&#39;t really be doing \
anything as they act on the pixmapCache .. unless they delete the file from disk in \
which it doesn&#39;t matter.

iow, you&#39;ve got a very complex way of doing:

QFile::remove(pixmapCacheFileName);
pixmapCache = new KImageCache(pixmapCacheFileName, config.themeCacheKb() * \
1024);</pre> </div>
<br />



<p>- Aaron J. Seigo</p>


<br />
<p>On January 28th, 2014, 9:18 a.m. UTC, Harald Sitter wrote:</p>








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  <td>

<div>Review request for Plasma, Aaron J. Seigo and Martin Klapetek.</div>
<div>By Harald Sitter.</div>


<p style="color: grey;"><i>Updated Jan. 28, 2014, 9:18 a.m.</i></p>









<div style="margin-top: 1.5em;">
 <b style="color: #575012; font-size: 10pt;">Repository: </b>
kdelibs
</div>


<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
 <table width="100%" bgcolor="#ffffff" cellspacing="0" cellpadding="10" \
style="border: 1px solid #b8b5a0">  <tr>
  <td>
   <pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: \
-moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: \
                break-word;">- introduce svgelements cache handling in useCache()
- to decide whether or not to discard a cache type now the mtimes of metadata.desktop \
and the respective cache file are compared (previously this was an invalid file \
                compared to cache change time)
- cache cleanup now happens entirely before creation of the KImageCache instance to \
prevent any sort of problem there

- add fixme comment about broken version-based cache handling. for one the version \
specific file name is not actually used for the KImageCache and for another the \
entire shebang is missing from svgelements all together. this has the very \
unfortunate side effect that the *active* cache files are deleted ever so often, it \
may be worth removing the code portions until someone finds time/interest to actually \
implement this in a working fashion.</pre>  </td>
 </tr>
</table>


<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
<table width="100%" bgcolor="#ffffff" cellspacing="0" cellpadding="10" style="border: \
1px solid #b8b5a0">  <tr>
  <td>
   <pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: \
-moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: \
break-word;">upgraded from 4.8 straight to 4.12 -&gt; theme caches correctly \
discarded</pre>  </td>
 </tr>
</table>


<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
<ul style="margin-left: 3em; padding-left: 0;">

 <li>plasma/theme.cpp <span style="color: grey">(cb44878)</span></li>

</ul>

<p><a href="https://git.reviewboard.kde.org/r/115326/diff/" style="margin-left: \
3em;">View Diff</a></p>







  </td>
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</table>








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