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39 lines
733 B

package buf
import (
"syscall"
)
type windowsReader struct {
bufs []syscall.WSABuf
}
func (r *windowsReader) Init(bs []*Buffer) {
if r.bufs == nil {
r.bufs = make([]syscall.WSABuf, 0, len(bs))
}
for _, b := range bs {
r.bufs = append(r.bufs, syscall.WSABuf{Len: uint32(Size), Buf: &b.v[0]})
}
}
func (r *windowsReader) Clear() {
for idx := range r.bufs {
r.bufs[idx].Buf = nil
}
r.bufs = r.bufs[:0]
}
func (r *windowsReader) Read(fd uintptr) int32 {
var nBytes uint32
var flags uint32
err := syscall.WSARecv(syscall.Handle(fd), &r.bufs[0], uint32(len(r.bufs)), &nBytes, &flags, nil, nil)
if err != nil {
return -1
}
return int32(nBytes)
}
func newMultiReader() multiReader {
return new(windowsReader)
}