golang fd_fsync_windows 代码
文件路径：/src/internal/poll/fd_fsync_windows.go
/ Copyright 2018 The Go Authors. All rights reserved.
/ Use of this source code is governed by a BSD-style
/ license that can be found in the LICENSE file.
package poll
import "syscall"
/ Fsync wraps syscall.Fsync.
func (fd *FD) Fsync() error {
if err := fd.incref(); err != nil {
return err
}
defer fd.decref()
return syscall.Fsync(fd.Sysfd)
}