Remove uses of FCThrow in interlocked helpers #96916
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ghost
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jkotas
commented
Jan 12, 2024
| public static extern object? Exchange([NotNullIfNotNull(nameof(value))] ref object? location1, object? value); | ||
| public static object? Exchange([NotNullIfNotNull(nameof(value))] ref object? location1, object? value) | ||
| { | ||
| if (Unsafe.IsNullRef(ref location1)) |
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The change moves the null check + throw from the C/C++ to C#. The JIT is smart enough to eliminate the null check in number of cases. I was not able to measure any actual perf improvement from that. The CAS operation dominates the perf and the extra null check is noise.
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This is going to have small conflict with #92974. |
FCThrow is implemented usign HELPER_METHOD_FRAME. All uses of FCThrow need to be removed to fix dotnet#95695.
EgorBo
reviewed
Jan 12, 2024
src/coreclr/System.Private.CoreLib/src/System/Threading/Interlocked.CoreCLR.cs
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AaronRobinsonMSFT
approved these changes
Jan 13, 2024
tmds
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Jan 23, 2024
FCThrow is implemented usign HELPER_METHOD_FRAME. All uses of FCThrow need to be removed to fix dotnet#95695.
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FCThrow is implemented usign HELPER_METHOD_FRAME. All uses of FCThrow need to be removed to fix #95695.