context: document CancelFunc to be safe for simultaneous use by multi…

…ple goroutines Fixes golang#32145 Change-Id: If4c9dd3a2af748974141ad6e571f80efcbaad772 Reviewed-on: https://go-review.googlesource.com/c/go/+/177899 Reviewed-by: Brad Fitzpatrick <[email protected]>
pkroll · May 20, 2019 · 82ee4e7 · 82ee4e7
1 parent 295c566
commit 82ee4e7
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/context/context.go b/src/context/context.go
@@ -220,6 +220,7 @@ func TODO() Context {
 
 // A CancelFunc tells an operation to abandon its work.
 // A CancelFunc does not wait for the work to stop.
+// A CancelFunc may be called by multiple goroutines simultaneously.
 // After the first call, subsequent calls to a CancelFunc do nothing.
 type CancelFunc func()