27 lines
874 B
Go
27 lines
874 B
Go
//go:build amd64 || arm64
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package websocket
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func mask(b []byte, key uint32) uint32 {
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// TODO: Will enable in v1.9.0.
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return maskGo(b, key)
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/*
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if len(b) > 0 {
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return maskAsm(&b[0], len(b), key)
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}
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return key
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*/
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}
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// @nhooyr: I am not confident that the amd64 or the arm64 implementations of this
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// function are perfect. There are almost certainly missing optimizations or
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// opportunities for simplification. I'm confident there are no bugs though.
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// For example, the arm64 implementation doesn't align memory like the amd64.
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// Or the amd64 implementation could use AVX512 instead of just AVX2.
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// The AVX2 code I had to disable anyway as it wasn't performing as expected.
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// See https://github.com/nhooyr/websocket/pull/326#issuecomment-1771138049
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//
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//go:noescape
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//lint:ignore U1000 disabled till v1.9.0
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func maskAsm(b *byte, len int, key uint32) uint32
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