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C# P/Invoke: DllImport vs LibraryImport Source Generators in .NET 7+ [Discussion #9]

ShadowPwn
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5y ago · Aug 13, 2021 2:15 PM
#1
What are the advantages of using the new [LibraryImport] source generator over traditional [DllImport] in .NET 7/8?
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ByteSurgeon
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5y ago · Aug 13, 2021 3:58 PM
#2
Traditional [DllImport] uses runtime IL stub generation and reflection marshaling. [LibraryImport] generates C# marshaling code at compile time! It is faster, fully AOT-compatible (NativeAOT), and allows you to inspect the exact marshaling code generated in your IDE.
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5y ago · Aug 14, 2021 9:58 PM
#3
It also eliminates the runtime JIT overhead on the first native function invocation. Highly recommended for any new P/Invoke code.
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