yggdrasil-network/yggdrasil-go
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Change some mutexes to atomics, change conns map to pointers, sort of works but seems to deadlock very easily

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This commit is contained in:
Neil Alexander 2019-04-21 11:50:41 +01:00
parent 62621f2960
commit 79bcfbf175
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GPG key ID: A02A2019A2BB0944
6 changed files with 81 additions and 115 deletions
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22
src/yggdrasil/router.go
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@ -287,16 +287,15 @@ func (r *router) sendPacket(bs []byte) {
if destSnet.IsValid() {
sinfo, isIn = r.core.sessions.getByTheirSubnet(&destSnet)
}
sinfo.timeMutex.Lock()
sinfo.initMutex.RLock()
defer sinfo.timeMutex.Unlock()
defer sinfo.initMutex.RUnlock()
sTime := sinfo.time.Load().(time.Time)
pingTime := sinfo.pingTime.Load().(time.Time)
pingSend := sinfo.pingSend.Load().(time.Time)
switch {
case !isIn || !sinfo.init:
case !isIn || !sinfo.init.Load().(bool):
// No or unintiialized session, so we need to search first
doSearch(bs)
case time.Since(sinfo.time) > 6*time.Second:
if sinfo.time.Before(sinfo.pingTime) && time.Since(sinfo.pingTime) > 6*time.Second {
case time.Since(sTime) > 6*time.Second:
if sTime.Before(pingTime) && time.Since(pingTime) > 6*time.Second {
// We haven't heard from the dest in a while
// We tried pinging but didn't get a response
// They may have changed coords
@ -307,16 +306,15 @@ func (r *router) sendPacket(bs []byte) {
// We haven't heard about the dest in a while
now := time.Now()
if !sinfo.time.Before(sinfo.pingTime) {
if !sTime.Before(pingTime) {
// Update pingTime to start the clock for searches (above)
sinfo.pingTime = now
sinfo.pingTime.Store(now)
}
if time.Since(sinfo.pingSend) > time.Second {
if time.Since(pingSend) > time.Second {
// Send at most 1 ping per second
sinfo.pingSend = now
sinfo.pingSend.Store(now)
r.core.sessions.sendPingPong(sinfo, false)
}
sinfo.timeMutex.Unlock()
}
fallthrough // Also send the packet
default: