mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-12-12 10:00:46 +01:00
37 lines
655 B
Go
37 lines
655 B
Go
|
package runners
|
||
|
|
|
||
|
|
import (
|
||
|
|
"context"
|
||
|
|
"time"
|
||
|
|
)
|
||
|
|
|
||
|
|
// ContextWithCancel returns a new context.Context impl with cancel.
|
||
|
|
func ContextWithCancel() (context.Context, context.CancelFunc) {
|
||
|
|
ctx := make(cancelctx)
|
||
|
|
return ctx, func() { close(ctx) }
|
||
|
|
}
|
||
|
|
|
||
|
|
// cancelctx is the simplest possible cancellable context.
|
||
|
|
type cancelctx (chan struct{})
|
||
|
|
|
||
|
|
func (cancelctx) Deadline() (time.Time, bool) {
|
||
|
|
return time.Time{}, false
|
||
|
|
}
|
||
|
|
|
||
|
|
func (ctx cancelctx) Done() <-chan struct{} {
|
||
|
|
return ctx
|
||
|
|
}
|
||
|
|
|
||
|
|
func (ctx cancelctx) Err() error {
|
||
|
|
select {
|
||
|
|
case <-ctx:
|
||
|
|
return context.Canceled
|
||
|
|
default:
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (cancelctx) Value(key interface{}) interface{} {
|
||
|
|
return nil
|
||
|
|
}
|