5a040c5a36
go/token has had a global "keywords" map filled at init time for years. Overall, the package's init time cost is small, as per GODEBUG=inittrace=1: init go/token @0.51 ms, 0.004 ms clock, 1776 bytes, 5 allocs init go/token @0.44 ms, 0.003 ms clock, 1776 bytes, 5 allocs init go/token @0.45 ms, 0.003 ms clock, 1568 bytes, 4 allocs However, adding the map size hint does help with the allocations: init go/token @0.45 ms, 0.002 ms clock, 944 bytes, 2 allocs init go/token @0.46 ms, 0.002 ms clock, 944 bytes, 2 allocs init go/token @0.55 ms, 0.003 ms clock, 1152 bytes, 3 allocs Three samples are rather unscientific, and the clock time is basically unchanged, but we might as well reduce the allocs. Change-Id: I48121a4cea4113d991882e32f274d7b7736800dc Reviewed-on: https://go-review.googlesource.com/c/go/+/391094 Trust: Daniel Martí <mvdan@mvdan.cc> Run-TryBot: Daniel Martí <mvdan@mvdan.cc> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> |
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README.md
The Go Programming Language
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