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https://github.com/cwinfo/yggdrasil-go.git
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some peer/link cleanup
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parent
cf2edc99d1
commit
59c5644a52
@ -62,7 +62,6 @@ type linkInterface struct {
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keepAliveTimer *time.Timer // Fires to send keep-alive traffic
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keepAliveTimer *time.Timer // Fires to send keep-alive traffic
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stallTimer *time.Timer // Fires to signal that no incoming traffic (including keep-alive) has been seen
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stallTimer *time.Timer // Fires to signal that no incoming traffic (including keep-alive) has been seen
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closeTimer *time.Timer // Fires when the link has been idle so long we need to close it
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closeTimer *time.Timer // Fires when the link has been idle so long we need to close it
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isIdle bool // True if the peer actor knows the link is idle
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isSending bool // True between a notifySending and a notifySent
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isSending bool // True between a notifySending and a notifySent
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blocked bool // True if we've blocked the peer in the switch
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blocked bool // True if we've blocked the peer in the switch
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}
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}
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@ -279,7 +278,7 @@ func (intf *linkInterface) out(bss [][]byte) {
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// nil to prevent it from blocking if the link is somehow frozen
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// nil to prevent it from blocking if the link is somehow frozen
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// this is safe because another packet won't be sent until the link notifies
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// this is safe because another packet won't be sent until the link notifies
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// the peer that it's ready for one
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// the peer that it's ready for one
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intf.writer.sendFrom(nil, bss, false)
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intf.writer.sendFrom(nil, bss)
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})
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})
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}
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}
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@ -290,7 +289,7 @@ func (intf *linkInterface) linkOut(bs []byte) {
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// additional packets until this one finishes, otherwise this could leak
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// additional packets until this one finishes, otherwise this could leak
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// memory if writing happens slower than link packets are generated...
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// memory if writing happens slower than link packets are generated...
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// that seems unlikely, so it's a lesser evil than deadlocking for now
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// that seems unlikely, so it's a lesser evil than deadlocking for now
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intf.writer.sendFrom(nil, [][]byte{bs}, true)
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intf.writer.sendFrom(nil, [][]byte{bs})
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})
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})
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}
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}
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@ -332,11 +331,8 @@ const (
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)
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)
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// notify the intf that we're currently sending
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// notify the intf that we're currently sending
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func (intf *linkInterface) notifySending(size int, isLinkTraffic bool) {
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func (intf *linkInterface) notifySending(size int) {
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intf.Act(&intf.writer, func() {
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intf.Act(&intf.writer, func() {
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if !isLinkTraffic {
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intf.isIdle = false
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}
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intf.isSending = true
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intf.isSending = true
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intf.sendTimer = time.AfterFunc(sendTime, intf.notifyBlockedSend)
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intf.sendTimer = time.AfterFunc(sendTime, intf.notifyBlockedSend)
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intf._cancelStallTimer()
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intf._cancelStallTimer()
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@ -365,13 +361,18 @@ func (intf *linkInterface) notifyBlockedSend() {
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}
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}
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// notify the intf that we've finished sending, returning the peer to the switch
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// notify the intf that we've finished sending, returning the peer to the switch
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func (intf *linkInterface) notifySent(size int, isLinkTraffic bool) {
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func (intf *linkInterface) notifySent(size int) {
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intf.Act(&intf.writer, func() {
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intf.Act(&intf.writer, func() {
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intf.sendTimer.Stop()
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if intf.sendTimer != nil {
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intf.sendTimer = nil
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intf.sendTimer.Stop()
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if !isLinkTraffic {
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intf.sendTimer = nil
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intf._notifyIdle()
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}
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}
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if intf.keepAliveTimer != nil {
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// TODO? unset this when we start sending, not when we finish...
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intf.keepAliveTimer.Stop()
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intf.keepAliveTimer = nil
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}
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intf._notifyIdle()
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intf.isSending = false
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intf.isSending = false
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if size > 0 && intf.stallTimer == nil {
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if size > 0 && intf.stallTimer == nil {
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intf.stallTimer = time.AfterFunc(stallTime, intf.notifyStalled)
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intf.stallTimer = time.AfterFunc(stallTime, intf.notifyStalled)
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@ -381,10 +382,7 @@ func (intf *linkInterface) notifySent(size int, isLinkTraffic bool) {
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// Notify the peer that we're ready for more traffic
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// Notify the peer that we're ready for more traffic
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func (intf *linkInterface) _notifyIdle() {
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func (intf *linkInterface) _notifyIdle() {
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if !intf.isIdle {
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intf.peer.Act(intf, intf.peer._handleIdle)
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intf.isIdle = true
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intf.peer.Act(intf, intf.peer._handleIdle)
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}
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}
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}
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// Set the peer as stalled, to prevent them from returning to the switch until a read succeeds
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// Set the peer as stalled, to prevent them from returning to the switch until a read succeeds
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@ -416,8 +414,8 @@ func (intf *linkInterface) notifyRead(size int) {
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intf.stallTimer.Stop()
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intf.stallTimer.Stop()
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intf.stallTimer = nil
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intf.stallTimer = nil
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}
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}
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if size > 0 && intf.stallTimer == nil {
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if size > 0 && intf.keepAliveTimer == nil {
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intf.stallTimer = time.AfterFunc(keepAliveTime, intf.notifyDoKeepAlive)
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intf.keepAliveTimer = time.AfterFunc(keepAliveTime, intf.notifyDoKeepAlive)
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}
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}
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if intf.blocked {
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if intf.blocked {
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intf.blocked = false
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intf.blocked = false
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@ -432,7 +430,7 @@ func (intf *linkInterface) notifyDoKeepAlive() {
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if intf.stallTimer != nil {
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if intf.stallTimer != nil {
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intf.stallTimer.Stop()
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intf.stallTimer.Stop()
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intf.stallTimer = nil
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intf.stallTimer = nil
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intf.writer.sendFrom(nil, [][]byte{nil}, true) // Empty keep-alive traffic
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intf.writer.sendFrom(nil, [][]byte{nil}) // Empty keep-alive traffic
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}
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}
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})
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})
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}
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}
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@ -446,7 +444,7 @@ type linkWriter struct {
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closed bool
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closed bool
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}
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}
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func (w *linkWriter) sendFrom(from phony.Actor, bss [][]byte, isLinkTraffic bool) {
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func (w *linkWriter) sendFrom(from phony.Actor, bss [][]byte) {
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w.Act(from, func() {
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w.Act(from, func() {
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if w.closed {
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if w.closed {
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return
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return
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@ -455,9 +453,9 @@ func (w *linkWriter) sendFrom(from phony.Actor, bss [][]byte, isLinkTraffic bool
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for _, bs := range bss {
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for _, bs := range bss {
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size += len(bs)
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size += len(bs)
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}
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}
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w.intf.notifySending(size, isLinkTraffic)
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w.intf.notifySending(size)
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w.worker <- bss
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w.worker <- bss
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w.intf.notifySent(size, isLinkTraffic)
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w.intf.notifySent(size)
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})
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})
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}
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}
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@ -317,7 +317,7 @@ func (p *peer) dropFromQueue(from phony.Actor, seq uint64) {
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p.Act(from, func() {
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p.Act(from, func() {
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if seq == p.seq {
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if seq == p.seq {
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p.drop = true
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p.drop = true
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p.max = p.queue.size
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p.max = p.queue.size + streamMsgSize
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}
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}
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})
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})
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}
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}
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