Remove legacy writev funcs

common/rw/writev_posix.go

@@ -1,31 +0,0 @@
-//go:build !windows
-
-package rw
-
-import (
-	"syscall"
-	"unsafe"
-)
-
-// Deprecated: use vectorised writer
-func WriteV(fd uintptr, data [][]byte) (int, error) {
-	iovecs := make([]syscall.Iovec, len(data))
-	for i := range iovecs {
-		iovecs[i].Base = &data[i][0]
-		iovecs[i].SetLen(len(data[i]))
-	}
-	var (
-		r uintptr
-		e syscall.Errno
-	)
-	for {
-		r, _, e = syscall.Syscall(syscall.SYS_WRITEV, fd, uintptr(unsafe.Pointer(&iovecs[0])), uintptr(len(iovecs)))
-		if e != syscall.EINTR {
-			break
-		}
-	}
-	if e != 0 {
-		return 0, e
-	}
-	return int(r), nil
-}

common/rw/writev_windows.go

@@ -1,19 +0,0 @@
-package rw
-
-import (
-	"syscall"
-)
-
-// Deprecated: use vectorised writer
-func WriteV(fd uintptr, data [][]byte) (int, error) {
-	var n uint32
-	buffers := make([]*syscall.WSABuf, len(data))
-	for i, buf := range data {
-		buffers[i] = &syscall.WSABuf{
-			Len: uint32(len(buf)),
-			Buf: &buf[0],
-		}
-	}
-	err := syscall.WSASend(syscall.Handle(fd), buffers[0], uint32(len(buffers)), &n, 0, nil, nil)
-	return int(n), err
-}