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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Convert all locking and condition variables in WebKit to use fast ParkingLot-based locks and condition variables"
href="https://bugs.webkit.org/show_bug.cgi?id=147841">147841</a>
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<th>Summary</th>
<td>Convert all locking and condition variables in WebKit to use fast ParkingLot-based locks and condition variables
</td>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>Product</th>
<td>WebKit
</td>
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<th>Version</th>
<td>528+ (Nightly build)
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<th>Hardware</th>
<td>All
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>Normal
</td>
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<th>Priority</th>
<td>P2
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<th>Component</th>
<td>Web Template Framework
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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<th>Reporter</th>
<td>fpizlo@apple.com
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<pre>The grand plan is:
- Make Lock use atomic increments on the fast path and ParkingLot on the slow path. This will make the fast path a lot better and will reduce the memory usage of Lock.
- Give Lock and ByteLock the ability to act as their own condition variables.
- Create a separate Condition that uses one byte and some ParkingLot magic, for those cases where a separate condition variable is needed.
Then we can remove all uses of std::mutex, std::condition_variable, WTF::Mutex, and WTF::ThreadCondition.</pre>
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