v1.0.0

common/buf/readv_windows.go

@@ -0,0 +1,39 @@
+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)
+}