rate: add documentation on Limiter concurrent usage

kamikazechaser · gopherbot · commit 883aed519795 · 2023-11-21T18:52:48.000Z
Closes golang/go#17261 Change-Id: Ifeacc8df45fb59e7781ddcc35c2fde0aa80188eb Reviewed-on: https://go-review.googlesource.com/c/time/+/530855 Auto-Submit: Sameer Ajmani <sameer@golang.org> Reviewed-by: Michael Knyszek <mknyszek@google.com> Reviewed-by: Sameer Ajmani <sameer@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
diff --git a/rate/rate.go b/rate/rate.go
@@ -52,6 +52,8 @@ func Every(interval time.Duration) Limit {
 // or its associated context.Context is canceled.
 //
 // The methods AllowN, ReserveN, and WaitN consume n tokens.
+//
+// Limiter is safe for simultaneous use by multiple goroutines.
 type Limiter struct {
 	mu     sync.Mutex
 	limit  Limit
