libgo/go/runtime/nbpipe_pipe2.go

   1 // Copyright 2019 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 freebsd linux netbsd openbsd solaris
   6
   7 package runtime
   8
   9 func nonblockingPipe() (r, w int32, errno int32) {
  10         r, w, errno = pipe2(_O_NONBLOCK | _O_CLOEXEC)
  11         if errno == -_ENOSYS {
  12                 r, w, errno = pipe()
  13                 if errno != 0 {
  14                         return -1, -1, errno
  15                 }
  16                 closeonexec(r)
  17                 setNonblock(r)
  18                 closeonexec(w)
  19                 setNonblock(w)
  20         }
  21         return r, w, errno
  22 }