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This is an automatically generated e-mail. To reply, visit:
<a href="https://git.reviewboard.kde.org/r/128829/">https://git.reviewboard.kde.org/r/128829/</a>
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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;">I now pushed my changes to 5.0, please test and discard this changeset.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">cheers</p></pre>
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<p>- Milian Wolff</p>
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<p>On September 4th, 2016, 3:37 p.m. UTC, Sven Brauch wrote:</p>
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<div>Review request for KDevelop.</div>
<div>By Sven Brauch.</div>
<p style="color: grey;"><i>Updated Sept. 4, 2016, 3:37 p.m.</i></p>
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<b style="color: #575012; font-size: 10pt;">Repository: </b>
kdevelop
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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;">The constructor of the parse job is called from createParseJob(), which
is called from the background parser with the background parser mutex
locked. If the constructor acquires a DUChain lock (which it did), then
any thread which acquires the DUChain lock first and then the background
parser mutex will cause a deadlock. Other language plugins do this a lot,
esp. qmljs and to some extent also python, by calling
BackgroundParser::isQueued() with the DUChain lock held.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">By doing the initialization in run() with the ForegroundLock held,
we avoid this problem.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">This is a severe bug, I hit it quite often and I have read more than one
report from users complaining about freezing as well.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Requires https://git.reviewboard.kde.org/r/128830/ or it will just assert out.</p></pre>
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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;">Opened several large sessions in a debug build, didn't see any more freezes during initial parsing. Before this was really easy to observe if you opened a C++ and a JS project in parallel.</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>languages/clang/clangparsejob.h <span style="color: grey">(7c0ab7a)</span></li>
<li>languages/clang/clangparsejob.cpp <span style="color: grey">(d676aea)</span></li>
<li>languages/plugins/custom-definesandincludes/compilerprovider/settingsmanager.cpp <span style="color: grey">(590ba4a)</span></li>
<li>languages/plugins/custom-definesandincludes/definesandincludesmanager.cpp <span style="color: grey">(df1be68)</span></li>
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<p><a href="https://git.reviewboard.kde.org/r/128829/diff/" style="margin-left: 3em;">View Diff</a></p>
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