mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-10 00:10:20 +00:00
52 lines
1.7 KiB
Go
52 lines
1.7 KiB
Go
/*
|
|
Copyright 2023 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package wait
|
|
|
|
import (
|
|
"context"
|
|
"sync"
|
|
"time"
|
|
|
|
"k8s.io/utils/clock"
|
|
)
|
|
|
|
// DelayFunc returns the next time interval to wait.
|
|
type DelayFunc func() time.Duration
|
|
|
|
// Timer takes an arbitrary delay function and returns a timer that can handle arbitrary interval changes.
|
|
// Use Backoff{...}.Timer() for simple delays and more efficient timers.
|
|
func (fn DelayFunc) Timer(c clock.Clock) Timer {
|
|
return &variableTimer{fn: fn, new: c.NewTimer}
|
|
}
|
|
|
|
// Until takes an arbitrary delay function and runs until cancelled or the condition indicates exit. This
|
|
// offers all of the functionality of the methods in this package.
|
|
func (fn DelayFunc) Until(ctx context.Context, immediate, sliding bool, condition ConditionWithContextFunc) error {
|
|
return loopConditionUntilContext(ctx, &variableTimer{fn: fn, new: internalClock.NewTimer}, immediate, sliding, condition)
|
|
}
|
|
|
|
// Concurrent returns a version of this DelayFunc that is safe for use by multiple goroutines that
|
|
// wish to share a single delay timer.
|
|
func (fn DelayFunc) Concurrent() DelayFunc {
|
|
var lock sync.Mutex
|
|
return func() time.Duration {
|
|
lock.Lock()
|
|
defer lock.Unlock()
|
|
return fn()
|
|
}
|
|
}
|