/
notice.go
80 lines (58 loc) · 1.06 KB
/
notice.go
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package common
import (
"sync"
)
type Notice struct {
isSet bool
mu sync.Mutex
chs []chan struct{}
}
func NewNotice(isSet bool) *Notice {
return &Notice{
isSet: isSet,
chs: make([]chan struct{}, 0),
}
}
func (this *Notice) NewChannel() chan struct{} {
this.mu.Lock()
defer this.mu.Unlock()
ch := make(chan struct{})
this.chs = append(this.chs, ch)
return ch
}
func (this *Notice) RemoveChannel(ch chan struct{}) {
this.mu.Lock()
defer this.mu.Unlock()
p := SliceIndex(this.chs, ch)
if p != -1 {
this.chs = SliceDelete(this.chs, p)
}
}
func (this *Notice) IsSet() bool {
this.mu.Lock()
defer this.mu.Unlock()
return this.isSet
}
func (this *Notice) Set() bool {
this.mu.Lock()
defer this.mu.Unlock()
if !this.isSet {
this.isSet = true
this.chs = make([]chan struct{}, 0)
return true
}
return false
}
func (this *Notice) Unset() bool {
this.mu.Lock()
defer this.mu.Unlock()
if this.isSet {
this.isSet = false
for len(this.chs) > 0 {
close(this.chs[0])
this.chs = this.chs[1:]
}
return true
}
return false
}