Ian Cottrell ae19ec7143 internal/telemetry: use atomics to get the exporter ... We change the main exporter to be stored and fetched using atomics rather than aquiring a mutex for a mild (but significant in the disabled case) speedup. Also has the benefit of not holding a global lock over all telemetry operations. benchstat of logging benchmatks before and after: name old time/op new time/op delta Baseline-8 329ns ± 2% 327ns ± 2% ~ (p=0.181 n=19+17) LoggingNoExporter-8 3.08µs ± 3% 2.42µs ± 2% -21.42% (p=0.000 n=20+19) Logging-8 13.7µs ± 2% 13.2µs ± 1% -3.49% (p=0.000 n=19+19) LoggingStdlib-8 5.39µs ± 3% 5.41µs ± 2% ~ (p=0.177 n=19+20) This is a replacement for https://go-review.googlesource.com/c/tools/+/212244 but built on the single exporter principle rather than the exporter list. Change-Id: Icc99319c4357e0bcb63386c64372a733e8a76796 Reviewed-on: https://go-review.googlesource.com/c/tools/+/221218 Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>		2020-03-03 22:56:03 +00:00
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apidiff
fastwalk	internal/fastwalk: fix checkptr failure on Darwin	2020-02-27 19:33:42 +00:00
gocommand	internal/gocommand: kill gracefully	2020-02-25 21:33:51 +00:00
gopathwalk	internal: rationalize debug logging	2020-03-03 16:59:18 +00:00
imports	internal/imports: don't set a logger unless the user has provided it	2020-03-03 21:46:25 +00:00
jsonrpc2	internal/lsp/lsprpc: clean up client session on disconnection	2020-02-24 23:23:05 +00:00
lsp	internal/telemetry: use atomics to get the exporter	2020-03-03 22:56:03 +00:00
memoize	internal/lsp/debug: serve cache entry counts	2020-02-03 22:21:18 +00:00
packagesinternal	internal/lsp: add module versions from "go list" to pkg.go.dev links	2020-02-19 19:55:21 +00:00
span	internal/span: handle URI escaping better	2020-02-18 20:59:02 +00:00
telemetry	internal/telemetry: use atomics to get the exporter	2020-03-03 22:56:03 +00:00
testenv	internal/testenv: reject the resolved 'go' command if it does not match runtime.GOROOT	2019-11-11 19:22:22 +00:00
tool	internal/lsp, internal/tool: clean up command line of gopls	2019-12-16 17:36:52 +00:00
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