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.
5 // +build darwin dragonfly freebsd linux netbsd openbsd solaris
13 "golang.org/x/sys/unix"
17 f, _ := os.Create("example.lock")
18 if err := unix.Flock(int(f.Fd()), unix.LOCK_EX); err != nil {
21 // Do work here that requires the lock. When finished, release the lock:
22 if err := unix.Flock(int(f.Fd()), unix.LOCK_UN); err != nil {