nonblocking_unix.mx raw

   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  //go:build unix
   6  
   7  package unix
   8  
   9  import "syscall"
  10  
  11  func IsNonblock(fd int) (nonblocking bool, err error) {
  12  	flag, e1 := Fcntl(fd, syscall.F_GETFL, 0)
  13  	if e1 != nil {
  14  		return false, e1
  15  	}
  16  	return flag&syscall.O_NONBLOCK != 0, nil
  17  }
  18  
  19  func HasNonblockFlag(flag int) bool {
  20  	return flag&syscall.O_NONBLOCK != 0
  21  }
  22