Mercurial > hg > CbC > CbC_gcc

comparison libgo/go/internal/syscall/unix/nonblocking_libc.go @ 152:2b5abeee2509

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update gcc11
author anatofuz
date Mon, 25 May 2020 07:50:57 +0900
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145:1830386684a0 152:2b5abeee2509
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 aix darwin solaris
6
7 package unix
8
9 import "syscall"
10
11 //extern __go_fcntl_uintptr
12 func fcntl(uintptr, uintptr, uintptr) (uintptr, uintptr)
13
14 func IsNonblock(fd int) (nonblocking bool, err error) {
15 flag, e1 := fcntl(uintptr(fd), syscall.F_GETFL, 0)
16 if e1 != 0 {
17 return false, syscall.Errno(e1)
18 }
19 return flag&syscall.O_NONBLOCK != 0, nil
20 }