<table><tr><td style="">flherne requested changes to this revision.<br />flherne added inline comments.<br />This revision now requires changes to proceed.
</td><a style="text-decoration: none; padding: 4px 8px; margin: 0 8px 8px; float: right; color: #464C5C; font-weight: bold; border-radius: 3px; background-color: #F7F7F9; background-image: linear-gradient(to bottom,#fff,#f1f0f1); display: inline-block; border: 1px solid rgba(71,87,120,.2);" href="https://phabricator.kde.org/D9016" rel="noreferrer">View Revision</a></tr></table><br /><div><strong>INLINE COMMENTS</strong><div><div style="margin: 6px 0 12px 0;"><div style="border: 1px solid #C7CCD9; border-radius: 3px;"><div style="padding: 0; background: #F7F7F7; border-color: #e3e4e8; border-style: solid; border-width: 0 0 1px 0; margin: 0;"><div style="color: #74777d; background: #eff2f4; padding: 6px 8px; overflow: hidden;"><a style="float: right; text-decoration: none;" href="https://phabricator.kde.org/D9016#inline-40657" rel="noreferrer">View Inline</a><span style="color: #4b4d51; font-weight: bold;">helpers.cpp:370</span></div>
<div style="font: 11px/15px "Menlo", "Consolas", "Monaco", monospace; white-space: pre-wrap; clear: both; padding: 4px 0; margin: 0;"><div style="padding: 0 8px; margin: 0 4px; background: rgba(251, 175, 175, .7);">    <span class="bright">    </span><span class="n"><span class="bright">Helper</span></span><span class="bright"></span><span style="color: #aa2211"><span class="bright">::</span></span><span class="bright"></span><span class="n"><span class="bright">correctionFileDirs</span></span><span class="bright"> </span><span style="color: #aa2211"><span class="bright">=</span></span><span class="bright"> </span><span class="n"><span class="bright">QStandardPaths</span></span><span class="bright"></span><span style="color: #aa2211"><span class="bright">::</span></span><span class="bright"></span><span class="n"><span class="bright">locateAll</span></span><span class="bright"></span><span class="p"><span class="bright">(</span></span><span class="bright"></span><span class="n"><span class="bright">QStandardPaths</span></span><span class="bright"></span><span style="color: #aa2211"><span class="bright">::</span></span><span class="bright"></span><span class="n"><span class="bright">GenericDataLocation</span></span><span class="bright"></span><span class="p"><span class="bright">,</span></span>
</div><div style="padding: 0 8px; margin: 0 4px; background: rgba(151, 234, 151, .6);">    <span class="bright"></span><span style="color: #aa4000"><span class="bright">if</span></span><span class="bright"> </span><span class="p"><span class="bright">(</span></span><span class="bright"> </span><span class="n"><span class="bright">correctionFileDirs</span></span><span class="bright"></span><span class="p"><span class="bright">.</span></span><span class="bright"></span><span class="n"><span class="bright">isEmpty</span></span><span class="bright"></span><span class="p"><span class="bright">()</span></span><span class="bright"> </span><span class="p"><span class="bright">)</span></span><span class="bright"> </span><span class="p"><span class="bright">{</span></span>
</div><div style="padding: 0 8px; margin: 0 4px; background: rgba(151, 234, 151, .6);">        <span class="n">QMutexLocker</span> <span class="n">lock</span><span class="p">(</span><span style="color: #aa2211">&</span><span class="n">cacheMutex</span><span class="p">());</span>
</div><div style="padding: 0 8px; margin: 0 4px; background: rgba(151, 234, 151, .6);">        <span class="n">correctionFileDirs</span> <span style="color: #aa2211">=</span> <span class="n">QStandardPaths</span><span style="color: #aa2211">::</span><span class="n">locateAll</span><span class="p">(</span><span class="n">QStandardPaths</span><span style="color: #aa2211">::</span><span class="n">GenericDataLocation</span><span class="p">,</span>
</div></div></div>
<div style="margin: 8px 0; padding: 0 12px;"><p style="padding: 0; margin: 8px;">I don't believe this is truly safe. It prevents multiple threads writing simultaneously, but other threads may read while the write takes place, which isn't permitted.</p>

<p style="padding: 0; margin: 8px;">Either the mutex should cover the whole thing, or it might be more performant to use a QReadWriteLock?</p>

<p style="padding: 0; margin: 8px;">Of course, since there was no locking at all before and nothing blew up, this is probably a statistical irrelevance...</p></div></div><br /><div style="border: 1px solid #C7CCD9; border-radius: 3px;"><div style="padding: 0; background: #F7F7F7; border-color: #e3e4e8; border-style: solid; border-width: 0 0 1px 0; margin: 0;"><div style="color: #74777d; background: #eff2f4; padding: 6px 8px; overflow: hidden;"><a style="float: right; text-decoration: none;" href="https://phabricator.kde.org/D9016#inline-40658" rel="noreferrer">View Inline</a><span style="color: #4b4d51; font-weight: bold;">helpers.cpp:397</span></div>
<div style="font: 11px/15px "Menlo", "Consolas", "Monaco", monospace; white-space: pre-wrap; clear: both; padding: 4px 0; margin: 0;"><div style="padding: 0 8px; margin: 0 4px; background: rgba(251, 175, 175, .7);">    <span class="bright">    </span><span class="n"><span class="bright">Helper</span></span><span class="bright"></span><span style="color: #aa2211"><span class="bright">::</span></span><span class="bright"></span><span class="n"><span class="bright">localCorrectionFileDir</span></span><span class="bright"> </span><span style="color: #aa2211"><span class="bright">=</span></span><span class="bright"> </span><span class="n"><span class="bright">QStandardPaths</span></span><span class="bright"></span><span style="color: #aa2211"><span class="bright">::</span></span><span class="bright"></span><span class="n"><span class="bright">writableLocation</span></span><span class="bright"></span><span class="p"><span class="bright">(</span></span><span class="bright"></span><span class="n"><span class="bright">QStandardPaths</span></span><span class="bright"></span><span style="color: #aa2211"><span class="bright">::</span></span><span class="bright"></span><span class="n"><span class="bright">GenericDataLocation</span></span><span class="bright"></span><span class="p"><span class="bright">)</span></span><span class="bright"> </span><span style="color: #aa2211"><span class="bright">+</span></span><span class="bright"> </span><span class="n"><span class="bright">QLatin1Char</span></span><span class="bright"></span><span class="p"><span class="bright">(</span></span><span class="bright"></span><span style="color: #766510"><span class="bright">'/'</span></span><span class="bright"></span><span class="p"><span class="bright">)</span></span><span class="bright"> </span><span style="color: #aa2211"><span class="bright">+</span></span><span class="bright"> </span><span style="color: #766510"><span class="bright">"kdevpythonsupport/correction_files/"</span></span><span class="bright"></span><span class="p"><span class="bright">;</span></span>
</div><div style="padding: 0 8px; margin: 0 4px; background: rgba(151, 234, 151, .6);">    <span class="bright"></span><span style="color: #aa4000"><span class="bright">if</span></span><span class="bright"> </span><span class="p"><span class="bright">(</span></span><span class="bright"> </span><span class="n"><span class="bright">localCorrectionFileDir</span></span><span class="bright"></span><span class="p"><span class="bright">.</span></span><span class="bright"></span><span class="n"><span class="bright">isEmpty</span></span><span class="bright"></span><span class="p"><span class="bright">()</span></span><span class="bright"> </span><span class="p"><span class="bright">)</span></span><span class="bright"> </span><span class="p"><span class="bright">{</span></span>
</div><div style="padding: 0 8px; margin: 0 4px; background: rgba(151, 234, 151, .6);">        <span class="n">QMutexLocker</span> <span class="n">lock</span><span class="p">(</span><span style="color: #aa2211">&</span><span class="n">cacheMutex</span><span class="p">());</span>
</div><div style="padding: 0 8px; margin: 0 4px; background: rgba(151, 234, 151, .6);">        <span class="n">localCorrectionFileDir</span> <span style="color: #aa2211">=</span> <span class="n">QStandardPaths</span><span style="color: #aa2211">::</span><span class="n">writableLocation</span><span class="p">(</span><span class="n">QStandardPaths</span><span style="color: #aa2211">::</span><span class="n">GenericDataLocation</span><span class="p">)</span>
</div></div></div>
<div style="margin: 8px 0; padding: 0 12px;"><p style="padding: 0; margin: 8px;">As above.</p></div></div></div></div></div><br /><div><strong>REVISION DETAIL</strong><div><a href="https://phabricator.kde.org/D9016" rel="noreferrer">https://phabricator.kde.org/D9016</a></div></div><br /><div><strong>To: </strong>brauch, flherne<br /><strong>Cc: </strong>anthonyfieroni, kdevelop-devel<br /></div>