go/src/net/splice_linux.go

var pollSplice …

// spliceFrom transfers data from r to c using the splice system call to minimize
// copies from and to userspace. c must be a TCP connection.
// Currently, spliceFrom is only enabled if r is a TCP or a stream-oriented Unix connection.
//
// If spliceFrom returns handled == false, it has performed no work.
func spliceFrom(c *netFD, r io.Reader) (written int64, err error, handled bool) { … }

// spliceTo transfers data from c to w using the splice system call to minimize
// copies from and to userspace. c must be a TCP connection.
// Currently, spliceTo is only enabled if w is a stream-oriented Unix connection.
//
// If spliceTo returns handled == false, it has performed no work.
func spliceTo(w io.Writer, c *netFD) (written int64, err error, handled bool) { … }