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46 lines
1.1 KiB
Go
46 lines
1.1 KiB
Go
/*
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Real-time Online/Offline Charging System (OCS) for Telecom & ISP environments
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Copyright (C) ITsysCOM GmbH
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>
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*/
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package utils
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import (
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"sync"
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)
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func NewSyncedChan() *SyncedChan {
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return &SyncedChan{
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c: make(chan struct{}),
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d: new(sync.Once),
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}
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}
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type SyncedChan struct {
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c chan struct{}
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d *sync.Once
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}
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func (s *SyncedChan) CloseOnce() {
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s.d.Do(func() {
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close(s.c)
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})
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}
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func (s *SyncedChan) Done() <-chan struct{} {
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return s.c
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}
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