<table><tr><td style="">bruns created this revision.<br />bruns added reviewers: Baloo, Frameworks, ngraham, astippich, poboiko.<br />Herald added projects: Frameworks, Baloo.<br />Herald added a subscriber: kde-frameworks-devel.<br />bruns requested review of this revision.
</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/D19287">View Revision</a></tr></table><br /><div><strong>REVISION SUMMARY</strong><div><p>In many cases, only a few plugins are required, or even only one<br />
(e.g. for baloo-widgets, baloo_filemetadata_temp_extractor) or none<br />
(in case there is no extractor for a given mimetype).</p>
<p>Loading of plugins is somewhat costly, so delay loading of plugins until<br />
they are requested by fetchExtractors(mimetype).</p>
<p>For e.g. extracting tags from an mp3 file, which only requires the<br />
taglibextractor, the runtime is reduced by more than 90%.</p></div></div><br /><div><strong>TEST PLAN</strong><div><p>ctest<br />
valgrind --tool=callgrind</p></div></div><br /><div><strong>REPOSITORY</strong><div><div>R286 KFileMetaData</div></div></div><br /><div><strong>BRANCH</strong><div><div>lazy_loading</div></div></div><br /><div><strong>REVISION DETAIL</strong><div><a href="https://phabricator.kde.org/D19287">https://phabricator.kde.org/D19287</a></div></div><br /><div><strong>AFFECTED FILES</strong><div><div>src/extractor.cpp<br />
src/extractor.h<br />
src/extractor_p.h<br />
src/extractorcollection.cpp<br />
src/extractorcollection.h</div></div></div><br /><div><strong>To: </strong>bruns, Baloo, Frameworks, ngraham, astippich, poboiko<br /><strong>Cc: </strong>kde-frameworks-devel, domson, ashaposhnikov, michaelh, astippich, spoorun, ngraham, bruns, abrahams<br /></div>