| package main |
| |
| import ( |
| "fmt" |
| "runtime" |
| "time" |
| |
| "github.com/smartystreets/go-disruptor" |
| ) |
| |
| const ( |
| BufferSize = 1024 * 64 |
| BufferMask = BufferSize - 1 |
| Iterations = 1000000 * 100 |
| ) |
| |
| var ringBuffer = [BufferSize]int64{} |
| |
| func main() { |
| runtime.GOMAXPROCS(2) |
| |
| written, read := disruptor.NewCursor(), disruptor.NewCursor() |
| writer := disruptor.NewWriter(written, read, BufferSize) |
| reader := disruptor.NewReader(read, written, written, SampleConsumer{}) |
| |
| started := time.Now() |
| reader.Start() |
| publish(writer) |
| reader.Stop() |
| finished := time.Now() |
| fmt.Println(Iterations, finished.Sub(started)) |
| } |
| |
| func publish(writer *disruptor.Writer) { |
| for sequence := disruptor.InitialSequenceValue; sequence <= Iterations; { |
| sequence = writer.Reserve() |
| ringBuffer[sequence&BufferMask] = sequence |
| writer.Commit(sequence) |
| } |
| } |
| |
| type SampleConsumer struct{} |
| |
| func (this SampleConsumer) Consume(lower, upper int64) { |
| for lower <= upper { |
| message := ringBuffer[lower&BufferMask] |
| if message != lower { |
| fmt.Println("Race condition", message, lower) |
| panic("Race condition") |
| } |
| lower++ |
| } |
| } |