func (m *M) addBuy(b *pqueue.OrderNode) {
if b.Price() == msg.MARKET_PRICE {
panic("It is illegal to send a buy at market price")
}
q := m.getMatchQueues(b.StockId())
if !m.fillableBuy(b, q) {
q.PushBuy(b)
}
}
func (m *M) cancel(o *pqueue.OrderNode) {
q := m.getMatchQueues(o.StockId())
ro := q.Cancel(o)
if ro != nil {
m.completeCancelled(ro)
m.slab.Free(ro)
} else {
m.completeNotCancelled(o)
}
m.slab.Free(o)
}
func (m *M) addSell(s *pqueue.OrderNode) {
q := m.getMatchQueues(s.StockId())
if !m.fillableSell(s, q) {
q.PushSell(s)
}
}
func (m *M) completeTrade(brk, srk msg.MsgKind, b, s *pqueue.OrderNode, price, amount uint64) {
m.Out.Write(msg.Message{Kind: brk, Price: price, Amount: amount, TraderId: b.TraderId(), TradeId: b.TradeId(), StockId: b.StockId()})
m.Out.Write(msg.Message{Kind: srk, Price: price, Amount: amount, TraderId: s.TraderId(), TradeId: s.TradeId(), StockId: s.StockId()})
}
func completeTrade(out chan<- *msg.Message, brk, srk msg.MsgKind, b, s *pqueue.OrderNode, price uint64, amount uint32) {
br := &msg.Message{Kind: brk, Price: price, Amount: amount, TraderId: b.TraderId(), TradeId: b.TradeId(), StockId: b.StockId()}
sr := &msg.Message{Kind: srk, Price: price, Amount: amount, TraderId: s.TraderId(), TradeId: s.TradeId(), StockId: s.StockId()}
out <- br
out <- sr
}