/
notice.go
77 lines (52 loc) · 998 Bytes
/
notice.go
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package common
import "sync"
type Notice struct {
sync.Mutex
isSet bool
lastIsSet bool
chs []chan struct{}
}
func NewNotice() *Notice {
return &Notice{isSet: true, chs: make([]chan struct{}, 0)}
}
func (this *Notice) NewChannel() chan struct{} {
this.Lock()
defer this.Unlock()
ch := make(chan struct{})
this.chs = append(this.chs, ch)
return ch
}
func (this *Notice) IsSet() bool {
this.Lock()
defer this.Unlock()
if this.lastIsSet != this.isSet {
this.lastIsSet = this.isSet
DebugFunc(this.isSet)
}
return this.isSet
}
func (this *Notice) Set() bool {
this.Lock()
defer this.Unlock()
if !this.isSet {
DebugFunc()
this.isSet = true
this.chs = make([]chan struct{}, 0)
return true
}
return false
}
func (this *Notice) Unset() bool {
this.Lock()
defer this.Unlock()
if this.isSet {
DebugFunc()
this.isSet = false
for len(this.chs) > 0 {
close(this.chs[0])
this.chs = this.chs[1:]
}
return true
}
return false
}