func (s *suite) BenchmarkPushPopFrontDeque(c *gc.C) {
d := deque.New()
for i := 0; i < c.N; i++ {
d.PushFront(i)
}
for i := 0; i < c.N; i++ {
_, _ = d.PopFront()
}
}
func (s *suite) BenchmarkPushPopBackDeque(c *gc.C) {
d := deque.New()
for i := 0; i < c.N; i++ {
d.PushBack(i)
}
for i := 0; i < c.N; i++ {
_, _ = d.PopBack()
}
}
func (w *BufferedLogWriter) loop() {
buffer := deque.New()
var outCh LogRecordCh // Output channel - set when there's something to send.
var outRec *LogRecord // Next LogRecord to send to the output channel.
for {
// If there's something in the buffer and there's nothing
// queued up to send, set up the next LogRecord to send.
if outCh == nil {
if item, haveItem := buffer.PopFront(); haveItem {
outRec = item.(*LogRecord)
outCh = w.out
}
}
select {
case inRec, ok := <-w.in:
if !ok {
// Input channel has been closed; finish up.
close(w.out)
return
}
buffer.PushBack(inRec)
if buffer.Len() > w.maxLen {
// The buffer has exceeded the limit - discard the
// next LogRecord from the front of the queue.
buffer.PopFront()
outRec.DroppedAfter++
}
case outCh <- outRec:
outCh = nil // Signal that send happened.
}
}
}
func (s *suite) SetUpTest(c *gc.C) {
s.deque = deque.New()
}