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https://github.com/strukturag/nextcloud-spreed-signaling
synced 2024-05-04 06:43:11 +02:00
Add helper class to handle close channels.
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parent
2a47829164
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47
closer.go
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47
closer.go
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/**
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* Standalone signaling server for the Nextcloud Spreed app.
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* Copyright (C) 2023 struktur AG
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*
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* @author Joachim Bauch <bauch@struktur.de>
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*
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* @license GNU AGPL version 3 or any later version
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*
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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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*
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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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*
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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 <http://www.gnu.org/licenses/>.
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*/
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package signaling
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import (
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"sync/atomic"
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)
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type Closer struct {
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closed uint32
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C chan struct{}
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}
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func NewCloser() *Closer {
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return &Closer{
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C: make(chan struct{}),
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}
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}
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func (c *Closer) IsClosed() bool {
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return atomic.LoadUint32(&c.closed) != 0
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}
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func (c *Closer) Close() {
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if atomic.CompareAndSwapUint32(&c.closed, 0, 1) {
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close(c.C)
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}
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}
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62
closer_test.go
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62
closer_test.go
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@ -0,0 +1,62 @@
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/**
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* Standalone signaling server for the Nextcloud Spreed app.
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* Copyright (C) 2023 struktur AG
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*
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* @author Joachim Bauch <bauch@struktur.de>
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*
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* @license GNU AGPL version 3 or any later version
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*
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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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*
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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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*
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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 <http://www.gnu.org/licenses/>.
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*/
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package signaling
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import (
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"sync"
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"testing"
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)
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func TestCloserMulti(t *testing.T) {
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closer := NewCloser()
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var wg sync.WaitGroup
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count := 10
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for i := 0; i < count; i++ {
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wg.Add(1)
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go func() {
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defer wg.Done()
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<-closer.C
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}()
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}
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if closer.IsClosed() {
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t.Error("should not be closed")
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}
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closer.Close()
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if !closer.IsClosed() {
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t.Error("should be closed")
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}
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wg.Wait()
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}
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func TestCloserCloseBeforeWait(t *testing.T) {
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closer := NewCloser()
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closer.Close()
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if !closer.IsClosed() {
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t.Error("should be closed")
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}
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<-closer.C
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if !closer.IsClosed() {
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t.Error("should be closed")
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}
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}
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