// Snapshot places a snapshot request onto the snapshot queue.
func (bh *BufferHist) Snapshot(buff buffer.Buffer, mc cursor.MultiCursor) {
request := BufferState{
buff: buff.Dup(),
mc: mc.Dup(),
}
bh.reqMutex.Lock()
bh.snapReq = request
bh.reqMutex.Unlock()
select {
case bh.snapChan <- struct{}{}:
default:
}
}
// ForceSnapshot forces a snapshot rather than requesting one.
func (bh *BufferHist) ForceSnapshot(buff buffer.Buffer, mc cursor.MultiCursor) {
bh.snapshot(buff.Dup(), mc.Dup())
}