github.com/gogf/gkafka@v1.0.1-0.20190702070843-033a14468069/third/golang.org/x/sys/unix/example_flock_test.go (about)

     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 darwin dragonfly freebsd linux netbsd openbsd solaris
     6  
     7  package unix_test
     8  
     9  import (
    10  	"log"
    11  	"os"
    12  
    13  	"github.com/gogf/gkafka/third/golang.org/x/sys/unix"
    14  )
    15  
    16  func ExampleFlock() {
    17  	f, _ := os.Create("example.lock")
    18  	if err := unix.Flock(int(f.Fd()), unix.LOCK_EX); err != nil {
    19  		log.Fatal(err)
    20  	}
    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 {
    23  		log.Fatal(err)
    24  	}
    25  }