mirror of
https://github.com/tursom/GoCollections.git
synced 2025-03-23 00:10:07 +08:00
47 lines
564 B
Go
47 lines
564 B
Go
package collections
|
|
|
|
import (
|
|
"sync"
|
|
|
|
"github.com/tursom/GoCollections/util/time"
|
|
)
|
|
|
|
type Park struct {
|
|
lock sync.Mutex
|
|
ch chan struct{}
|
|
}
|
|
|
|
func (p *Park) getCh() chan struct{} {
|
|
p.lock.Lock()
|
|
defer p.lock.Unlock()
|
|
|
|
if p.ch == nil {
|
|
p.ch = make(chan struct{})
|
|
}
|
|
|
|
return p.ch
|
|
}
|
|
|
|
func (p *Park) Park() {
|
|
<-p.getCh()
|
|
}
|
|
|
|
func (p *Park) ParkT(timeout time.Duration) {
|
|
select {
|
|
case <-p.getCh():
|
|
case <-time.After(timeout):
|
|
}
|
|
}
|
|
|
|
func (p *Park) Unpark() {
|
|
p.lock.Lock()
|
|
defer p.lock.Unlock()
|
|
|
|
if p.ch == nil {
|
|
return
|
|
}
|
|
|
|
close(p.ch)
|
|
p.ch = nil
|
|
}
|