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output.go
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output.go
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package kcp
import (
"io"
"sync"
"v2ray.com/core/common/buf"
)
type SegmentWriter interface {
Write(seg Segment)
}
type BufferedSegmentWriter struct {
sync.Mutex
mtu uint32
buffer *buf.Buffer
writer io.Writer
}
func NewSegmentWriter(writer io.Writer, mtu uint32) *BufferedSegmentWriter {
return &BufferedSegmentWriter{
mtu: mtu,
writer: writer,
buffer: buf.NewSmall(),
}
}
func (v *BufferedSegmentWriter) Write(seg Segment) {
v.Lock()
defer v.Unlock()
nBytes := seg.ByteSize()
if uint32(v.buffer.Len()+nBytes) > v.mtu {
v.FlushWithoutLock()
}
v.buffer.AppendSupplier(seg.Bytes())
}
func (v *BufferedSegmentWriter) FlushWithoutLock() {
v.writer.Write(v.buffer.Bytes())
v.buffer.Clear()
}
func (v *BufferedSegmentWriter) Flush() {
v.Lock()
defer v.Unlock()
if v.buffer.IsEmpty() {
return
}
v.FlushWithoutLock()
}