// Copy the message data to the out-queue.
func (p *Pumper) PostOut(id MsgId, m Msg) {
p.newerLock.RLock()
defer p.newerLock.RUnlock()
if p.newer != nil {
p.newer.PostOut(id, m)
} else {
cp := poolutil.BufGet(len(m))
copy(cp, m)
p.pushWMsg(id, cp)
}
}
// Inherit inner data from the old pumper.
// The old pumper must have stopped.
func (p *Pumper) Inherit(older *Pumper, reOutN int) bool {
op := older
op.newerLock.Lock()
defer op.newerLock.Unlock()
if reOutN > op.bI.Len() {
return false
}
op.rQ.Lock()
defer op.rQ.Unlock()
op.wQ.Lock()
defer op.wQ.Unlock()
p.rQ.Lock()
defer p.rQ.Unlock()
p.wQ.Lock()
defer p.wQ.Unlock()
// in
p.rQ.List().MergeFrontList(op.rQ.List())
// backup
useless := op.bI.Len() - reOutN
for i := 0; i < useless; i++ {
_, l := op.bI.PopFront()
op.bB.Skip(l)
}
for i := 0; i < reOutN; i++ {
id, l := op.bI.PopFront()
m := poolutil.BufGet(l)
op.bB.Read(m)
p.wQ.List().PushBack(newMsgEntry(id, m))
}
// out
p.wQ.List().MergeBackList(op.wQ.List())
op.newer = p
p.rQ.SetEvent()
p.wQ.SetEvent()
return true
}