libgo/go/os/rawconn.go

   1 // Copyright 2018 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 // +build !plan9
   6
   7 package os
   8
   9 import (
  10         "runtime"
  11 )
  12
  13 // rawConn implements syscall.RawConn.
  14 type rawConn struct {
  15         file *File
  16 }
  17
  18 func (c *rawConn) Control(f func(uintptr)) error {
  19         if err := c.file.checkValid("SyscallConn.Control"); err != nil {
  20                 return err
  21         }
  22         err := c.file.pfd.RawControl(f)
  23         runtime.KeepAlive(c.file)
  24         return err
  25 }
  26
  27 func (c *rawConn) Read(f func(uintptr) bool) error {
  28         if err := c.file.checkValid("SyscallConn.Read"); err != nil {
  29                 return err
  30         }
  31         err := c.file.pfd.RawRead(f)
  32         runtime.KeepAlive(c.file)
  33         return err
  34 }
  35
  36 func (c *rawConn) Write(f func(uintptr) bool) error {
  37         if err := c.file.checkValid("SyscallConn.Write"); err != nil {
  38                 return err
  39         }
  40         err := c.file.pfd.RawWrite(f)
  41         runtime.KeepAlive(c.file)
  42         return err
  43 }
  44
  45 func newRawConn(file *File) (*rawConn, error) {
  46         return &rawConn{file: file}, nil
  47 }