diff options
Diffstat (limited to 'src/sync/once.go')
| -rw-r--r-- | src/sync/once.go | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/sync/once.go b/src/sync/once.go index 38373160b9..b6399cfc3d 100644 --- a/src/sync/once.go +++ b/src/sync/once.go @@ -11,6 +11,10 @@ import ( // Once is an object that will perform exactly one action. // // A Once must not be copied after first use. +// +// In the terminology of the Go memory model, +// the return from f “synchronizes before” +// the return from any call of once.Do(f). type Once struct { // done indicates whether the action has been performed. // It is first in the struct because it is used in the hot path. |