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9a76102bfb
Make all our package sources use Go 1.17 gofmt format (adding //go:build lines). Not strictly necessary but will avoid spurious changes as files are edited. Part of //go:build change (#41184). See https://golang.org/design/draft-gobuild Change-Id: I01667f826428426a39c84717d02efa25fa44553c Reviewed-on: https://go-review.googlesource.com/c/sys/+/294490 TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by: Matt Layher <mdlayher@gmail.com> Trust: Josh Bleecher Snyder <josharian@gmail.com> Trust: Russ Cox <rsc@golang.org> Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> Run-TryBot: Russ Cox <rsc@golang.org>
27 lines
677 B
Go
27 lines
677 B
Go
// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
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// +build darwin dragonfly freebsd linux netbsd openbsd solaris
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package unix_test
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import (
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"log"
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"os"
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"golang.org/x/sys/unix"
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)
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func ExampleFlock() {
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f, _ := os.Create("example.lock")
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if err := unix.Flock(int(f.Fd()), unix.LOCK_EX); err != nil {
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log.Fatal(err)
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}
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// Do work here that requires the lock. When finished, release the lock:
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if err := unix.Flock(int(f.Fd()), unix.LOCK_UN); err != nil {
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log.Fatal(err)
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}
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}
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