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This is an automatically generated e-mail. To reply, visit:
<a href="https://git.reviewboard.kde.org/r/127387/">https://git.reviewboard.kde.org/r/127387/</a>
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<p style="margin-top: 0;">On March 15th, 2016, 11:42 p.m. UTC, <b>David Edmundson</b> wrote:</p>
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<a href="https://git.reviewboard.kde.org/r/127387/diff/1/?file=453202#file453202line216" style="color: black; font-weight: bold; text-decoration: underline;">src/backendmanager.cpp</a>
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(Diff revision 1)
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="c1">//qCDebug(KSCREEN) << "Trying" << finfo.filePath() << loader->isLoaded();</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="n">KScreen</span><span class="o">::</span><span class="n">AbstractBackend</span> <span class="o">*</span><span class="n">BackendManager</span><span class="o">::</span><span class="n">loadBackendPlugin</span><span class="p">(</span><span class="n">QPluginLoader</span> <span class="o">*</span><span class="n">loader</span><span class="p">,</span> <span class="k">const</span> <span class="n">QString</span> <span class="o">&</span><span class="n">name</span><span class="p">,</span></pre></td>
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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;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">is the name argument still used?</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">It looks like that used to be the name of the backend to load, which you now determine yourself inside the function, rendering it useless.</p></pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Yes, I want to kill "name", but it's used from a couple of places in the API (but doesn't get used in the end, it's not needed since we share all the logic now with in- and out-of-process loading. I'll remove the remainders of name in a separate patch.</p></pre>
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<p>- Sebastian</p>
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<p>On March 15th, 2016, 5:57 p.m. UTC, Sebastian Kügler wrote:</p>
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<div>Review request for Plasma, Solid, Daniel Vrátil, and Martin Gräßlin.</div>
<div>By Sebastian Kügler.</div>
<p style="color: grey;"><i>Updated March 15, 2016, 5:57 p.m.</i></p>
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<b style="color: #575012; font-size: 10pt;">Repository: </b>
libkscreen
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<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;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Refactor the backend loading code</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;"><div class="codehilite" style="background: #f8f8f8"><pre style="line-height: 125%">Untangle the large plugin loading logic in the BackendManager static
into separate bits. This makes the code clearer and easier to auto-test.
- listBackends() compiles a list of backends from the plugin paths
- preferredBackend() picks the backend, in this priority:
- if KSCREEN_BACKEND is set in the environment, this is the only
used method to find the backend plugin
- if platform is X11, the XRandR backend is picked
- if platform is wayland, KWayland backend is picked
- if neither is the case, QScreen backend is picked
It does introduce a slight behavioral change: The mechanism was based on
falling through, so it would consider another backend if the logically
picked on fails to load. This is undesired behavior, however, since the
backendloader may be able to load the plugin, but that doesn't mean that
the plugin actually work.
Parsing of the KSCREEN_BACKEND variable is kept case-insensitive.
autotests for new backend loading logic
- makes sure we find plugins installed
- pick plugins from env var
We can't sensible test all the runtime cases yet, but this at least
covers the code paths around those few lines that do runtime detection
of x11 and wayland.
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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<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;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">manual runtime tests and autotests pass</p></pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>autotests/CMakeLists.txt <span style="color: grey">(26c7952)</span></li>
<li>autotests/testbackendloader.cpp <span style="color: grey">(PRE-CREATION)</span></li>
<li>src/backendmanager.cpp <span style="color: grey">(382ae71)</span></li>
<li>src/backendmanager_p.h <span style="color: grey">(150883b)</span></li>
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<p><a href="https://git.reviewboard.kde.org/r/127387/diff/" style="margin-left: 3em;">View Diff</a></p>
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