gistfile1.txt

pool := make(chan thing, size)

func Get() {
   t, ok := <-pool
   if !ok { return PoolClosed }
   return t
}

func Return(t) {
   m.lock()
   if !closed {
     pool <- t
   }
   m.unlock()
}

func Close() {
   m.lock()
   if !closed {
     close(pool)
   }
   closed = true
   m.unlock()
}