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Josh Bleecher Snyder 3c61cb3dcd net: optimize ReadMsgUDPAddrPort 
Instead of implementing ReadMsgUDPAddrPort in terms of ReadMsgUDP,
do it the other way around. This keeps the code minimal while
still avoiding allocs.

We could also rearrange ReadMsgUDP to be mid-stack inlined to avoid
allocating the *UDPAddr, but anyone who's trying to eliminate
allocs should use ReadMsgUDPAddrPort instead anyway,
because ReadMsgUDP will always allocate at least once (the IP slice).

name                       old time/op    new time/op    delta
ReadWriteMsgUDPAddrPort-8    5.26µs ± 3%    5.29µs ± 6%     ~     (p=0.429 n=12+13)

name                       old alloc/op   new alloc/op   delta
ReadWriteMsgUDPAddrPort-8      176B ± 0%      128B ± 0%  -27.27%  (p=0.000 n=15+15)

name                       old allocs/op  new allocs/op  delta
ReadWriteMsgUDPAddrPort-8      5.00 ± 0%      4.00 ± 0%  -20.00%  (p=0.000 n=15+15)

Change-Id: I15228cb4ec4f13f2f390407b6c62c44c228e7201
Reviewed-on: https://go-review.googlesource.com/c/go/+/360596
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2021-11-02 03:54:24 +00:00
.github .github: update IRC server 2021-09-30 19:56:27 +00:00
api cmd/go: stamp VCS revision and uncommitted status into binaries 2021-10-14 18:44:37 +00:00
doc Revert "cmd/go: remove support for -buildmode=shared" 2021-10-29 17:32:24 +00:00
lib/time lib/time: fix RFC 6557 url 2021-08-15 02:18:46 +00:00
misc Revert "cmd/go: remove support for -buildmode=shared" 2021-10-29 17:32:24 +00:00
src net: optimize ReadMsgUDPAddrPort 2021-11-02 03:54:24 +00:00
test cmd/compile: fix panic when refer to method of imported instantiated type 2021-11-02 03:09:01 +00:00
.gitattributes
.gitignore internal/buildcfg: move build configuration out of cmd/internal/objabi 2021-04-16 19:20:53 +00:00
AUTHORS net/http: guarantee that the Transport dial functions are respected in js/wasm 2021-10-28 17:57:57 +00:00
codereview.cfg codereview.cfg: add codereview.cfg for master branch 2021-02-19 18:44:53 +00:00
CONTRIBUTING.md
CONTRIBUTORS net/http: guarantee that the Transport dial functions are respected in js/wasm 2021-10-28 17:57:57 +00:00
LICENSE
PATENTS
README.md README.md: update contribute URL 2021-09-30 13:33:21 +00:00
SECURITY.md

README.md

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

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