diff options
Diffstat (limited to 'pkg/amutex/amutex.go')
| -rw-r--r-- | pkg/amutex/amutex.go | 30 |
1 files changed, 3 insertions, 27 deletions
diff --git a/pkg/amutex/amutex.go b/pkg/amutex/amutex.go index a078a31db..d7acc1d9f 100644 --- a/pkg/amutex/amutex.go +++ b/pkg/amutex/amutex.go @@ -19,41 +19,17 @@ package amutex import ( "sync/atomic" + "gvisor.dev/gvisor/pkg/context" "gvisor.dev/gvisor/pkg/syserror" ) // Sleeper must be implemented by users of the abortable mutex to allow for // cancellation of waits. -type Sleeper interface { - // SleepStart is called by the AbortableMutex.Lock() function when the - // mutex is contended and the goroutine is about to sleep. - // - // A channel can be returned that causes the sleep to be canceled if - // it's readable. If no cancellation is desired, nil can be returned. - SleepStart() <-chan struct{} - - // SleepFinish is called by AbortableMutex.Lock() once a contended mutex - // is acquired or the wait is aborted. - SleepFinish(success bool) - - // Interrupted returns true if the wait is aborted. - Interrupted() bool -} +type Sleeper = context.ChannelSleeper // NoopSleeper is a stateless no-op implementation of Sleeper for anonymous // embedding in other types that do not support cancelation. -type NoopSleeper struct{} - -// SleepStart implements Sleeper.SleepStart. -func (NoopSleeper) SleepStart() <-chan struct{} { - return nil -} - -// SleepFinish implements Sleeper.SleepFinish. -func (NoopSleeper) SleepFinish(success bool) {} - -// Interrupted implements Sleeper.Interrupted. -func (NoopSleeper) Interrupted() bool { return false } +type NoopSleeper = context.Context // Block blocks until either receiving from ch succeeds (in which case it // returns nil) or sleeper is interrupted (in which case it returns |