mirror of
https://git.zx2c4.com/wireguard-go
synced 2024-11-15 01:05:15 +01:00
57aadfcb14
We have a bunch of stupid channel tricks, and I'm about to add more. Give them their own file. This commit is 100% code movement. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
70 lines
1.5 KiB
Go
70 lines
1.5 KiB
Go
/* SPDX-License-Identifier: MIT
|
|
*
|
|
* Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved.
|
|
*/
|
|
|
|
package device
|
|
|
|
import "sync"
|
|
|
|
// An outboundQueue is a channel of QueueOutboundElements awaiting encryption.
|
|
// An outboundQueue is ref-counted using its wg field.
|
|
// An outboundQueue created with newOutboundQueue has one reference.
|
|
// Every additional writer must call wg.Add(1).
|
|
// Every completed writer must call wg.Done().
|
|
// When no further writers will be added,
|
|
// call wg.Done to remove the initial reference.
|
|
// When the refcount hits 0, the queue's channel is closed.
|
|
type outboundQueue struct {
|
|
c chan *QueueOutboundElement
|
|
wg sync.WaitGroup
|
|
}
|
|
|
|
func newOutboundQueue() *outboundQueue {
|
|
q := &outboundQueue{
|
|
c: make(chan *QueueOutboundElement, QueueOutboundSize),
|
|
}
|
|
q.wg.Add(1)
|
|
go func() {
|
|
q.wg.Wait()
|
|
close(q.c)
|
|
}()
|
|
return q
|
|
}
|
|
|
|
// A inboundQueue is similar to an outboundQueue; see those docs.
|
|
type inboundQueue struct {
|
|
c chan *QueueInboundElement
|
|
wg sync.WaitGroup
|
|
}
|
|
|
|
func newInboundQueue() *inboundQueue {
|
|
q := &inboundQueue{
|
|
c: make(chan *QueueInboundElement, QueueInboundSize),
|
|
}
|
|
q.wg.Add(1)
|
|
go func() {
|
|
q.wg.Wait()
|
|
close(q.c)
|
|
}()
|
|
return q
|
|
}
|
|
|
|
// A handshakeQueue is similar to an outboundQueue; see those docs.
|
|
type handshakeQueue struct {
|
|
c chan QueueHandshakeElement
|
|
wg sync.WaitGroup
|
|
}
|
|
|
|
func newHandshakeQueue() *handshakeQueue {
|
|
q := &handshakeQueue{
|
|
c: make(chan QueueHandshakeElement, QueueHandshakeSize),
|
|
}
|
|
q.wg.Add(1)
|
|
go func() {
|
|
q.wg.Wait()
|
|
close(q.c)
|
|
}()
|
|
return q
|
|
}
|