metrics,syncs: add ShardedInt support to metrics.LabelMap

metrics.LabelMap grows slightly more heavy, needing a lock to ensure
proper ordering for newly initialized ShardedInt values. An Add method
enables callers to use .Add for both expvar.Int and syncs.ShardedInt
values, but retains the original behavior of defaulting to initializing
expvar.Int values.

Updates tailscale/corp#25450

Co-Authored-By: Andrew Dunham <andrew@du.nham.ca>
Signed-off-by: James Tucker <james@tailscale.com>
This commit is contained in:
James Tucker
2024-12-19 16:32:40 -08:00
committed by James Tucker
parent 72b278937b
commit 68b12a74ed
3 changed files with 46 additions and 0 deletions

View File

@@ -55,6 +55,7 @@ tailscale.com/cmd/stund dependencies: (generated by github.com/tailscale/depawar
tailscale.com/net/stun from tailscale.com/net/stunserver
tailscale.com/net/stunserver from tailscale.com/cmd/stund
tailscale.com/net/tsaddr from tailscale.com/tsweb
tailscale.com/syncs from tailscale.com/metrics
tailscale.com/tailcfg from tailscale.com/version
tailscale.com/tsweb from tailscale.com/cmd/stund
tailscale.com/tsweb/promvarz from tailscale.com/tsweb
@@ -74,6 +75,7 @@ tailscale.com/cmd/stund dependencies: (generated by github.com/tailscale/depawar
L 💣 tailscale.com/util/dirwalk from tailscale.com/metrics
tailscale.com/util/dnsname from tailscale.com/tailcfg
tailscale.com/util/lineiter from tailscale.com/version/distro
tailscale.com/util/mak from tailscale.com/syncs
tailscale.com/util/nocasemaps from tailscale.com/types/ipproto
tailscale.com/util/rands from tailscale.com/tsweb
tailscale.com/util/slicesx from tailscale.com/tailcfg