mirror of https://github.com/v2ray/v2ray-core
83 lines
1.3 KiB
Go
83 lines
1.3 KiB
Go
package signal
|
|
|
|
import (
|
|
"context"
|
|
"sync"
|
|
"time"
|
|
|
|
"v2ray.com/core/common"
|
|
"v2ray.com/core/common/task"
|
|
)
|
|
|
|
type ActivityUpdater interface {
|
|
Update()
|
|
}
|
|
|
|
type ActivityTimer struct {
|
|
sync.RWMutex
|
|
updated chan struct{}
|
|
checkTask *task.Periodic
|
|
onTimeout func()
|
|
}
|
|
|
|
func (t *ActivityTimer) Update() {
|
|
select {
|
|
case t.updated <- struct{}{}:
|
|
default:
|
|
}
|
|
}
|
|
|
|
func (t *ActivityTimer) check() error {
|
|
select {
|
|
case <-t.updated:
|
|
default:
|
|
t.finish()
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (t *ActivityTimer) finish() {
|
|
t.Lock()
|
|
defer t.Unlock()
|
|
|
|
if t.onTimeout != nil {
|
|
t.onTimeout()
|
|
t.onTimeout = nil
|
|
}
|
|
if t.checkTask != nil {
|
|
t.checkTask.Close() // nolint: errcheck
|
|
t.checkTask = nil
|
|
}
|
|
}
|
|
|
|
func (t *ActivityTimer) SetTimeout(timeout time.Duration) {
|
|
if timeout == 0 {
|
|
t.finish()
|
|
return
|
|
}
|
|
|
|
checkTask := &task.Periodic{
|
|
Interval: timeout,
|
|
Execute: t.check,
|
|
}
|
|
|
|
t.Lock()
|
|
|
|
if t.checkTask != nil {
|
|
t.checkTask.Close() // nolint: errcheck
|
|
}
|
|
t.checkTask = checkTask
|
|
t.Unlock()
|
|
t.Update()
|
|
common.Must(checkTask.Start())
|
|
}
|
|
|
|
func CancelAfterInactivity(ctx context.Context, cancel context.CancelFunc, timeout time.Duration) *ActivityTimer {
|
|
timer := &ActivityTimer{
|
|
updated: make(chan struct{}, 1),
|
|
onTimeout: cancel,
|
|
}
|
|
timer.SetTimeout(timeout)
|
|
return timer
|
|
}
|