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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ocagent	internal/telemetry: remove Flush method from exporter	2020-02-28 22:46:39 +00:00
prometheus	internal/telemetry: removing the concept of exporter lists	2020-02-26 21:51:01 +00:00
export.go	internal/telemetry: use atomics to get the exporter	2020-03-03 22:56:03 +00:00
log.go	internal/telemetry: remove Flush method from exporter	2020-02-28 22:46:39 +00:00