Use optimized hash creation methods on .NET 5+ #67999
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src/Workspaces/Core/Portable/Workspace/Solution/Checksum_Factory.cs
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CyrusNajmabadi
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Apr 27, 2023
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| return From(hash); | ||
| #elif NET5_0_OR_GREATER | ||
| using var pooledHash = s_incrementalHashPool.GetPooledObject(); | ||
| Span<byte> buffer = stackalloc byte[SharedPools.ByteBufferSize]; |
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4K is a much larger buffer than we typically like to stackalloc. It might be fine for your scenarios, just calling it out. We have a rough guideline of not stackalloc'ing more than 1K.
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(Also, keep in mind this whole buffer will be zero'd unless you're using SkipLocalsInit.)
Glad it was helpful. Curious what the net impact looks like if there are any perf tests that surface it... |
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Implements the changes suggested in #67995 (comment)
Review commit-by-commit highly recommended.
Supersedes #67998
Fixes #67995