linux flock example

Differences between fcntl (), lockf, and flock in linux. What are the differences between fcntl (), lockf, and flock in linux? what are the differences between fcntl (), lockf, and flock? the functions of lvyilong316 are used to lock files? First,

In the process of simultaneous operation of the same file by multiple processes, it is very easy to cause data confusion in the file, need to lock operation to ensure the integrity of the data, the file-based lock described here, called "File

The difference between fcntl (), LOCKF, and Flock in Linux The difference between fcntl (), LOCKF and Flock--lvyilong316 What is the difference between these three functions, which are all about locking up a file? First flock and Fcntl are system

Refer to the differences between FCNTL (), LOCKF, flock in LinuxWhat is the difference between these three functions , which are all about locking up a file?First flock and fcntl are system calls, and LOCKF is a library function . LOCKF is actually

First flock and Fcntl are system calls, and LOCKF are library functions. LOCKF is actually a fcntl package, so the LOCKF and Fcntl are the same, and the effect of locking the file is the same. The Fcntl and LOCKF are put together in most cases when

Recently I often need to SSH to several computers at the same time to do a lot of work that needs to wait and can be done at the same time. For example: 1. Let the remote computer update the kit at the same time 2. Simultaneous transfer of small

Reprint please indicate source: http://blog.csdn.net/cywosp/article/details/300830151. Overview of the scenein the multi-threaded development, the mutex can be used to protect the critical resources and prevent inconsistent data, which is the most

Pitfalls in crond using the flock command You need to execute a PHP script on a regular basis. The first thought is to use the crond command to implement this function. However, a strange thing was found during the execution of crond. The

Header file # include Defines the int flock (int fd, int operation) function ); Function Description: Flock () performs various locking or unlocking actions on the file referred to by the parameter FD according to the method specified by the

Linux's crontab command, which can be performed on a regular basis, and the minimum cycle is executed once per minute. About Crontab implementation per second can refer to my previous article "Linux Crontab implementation per second" Now there is a