flock
How to tell which file Apache is waiting for when WCHAN = flock_lock_file_wait
We\'re having an issue with our webservers in which more and more Apache processes are getting stuck waiting for file lock (caused by PHP flock()) to somehow resolve, but never does.Eventually the sit[详细]
2023-03-29 17:11 分类：问答bash flock: exit if can't acquire lock
The following lock mechanism is used for preventing a cron job from running concurrently: #!/bin/bash echo \"Before critical section\"[详细]
2023-03-27 20:08 分类：问答PHP flock() alternative
PHP\'s documentation page for flock() indicates that it\'s not safe to use under IIS. If I can\'t开发者_开发知识库 rely on flock under all circumstances, is there another way I could safely achieve th[详细]
2023-03-26 03:38 分类：问答Running python script with cron only if not running
I need to run a python script (job.py) every minute. This script must not be started if it is already running. Its execution time can be between 10 seconds and several hours.[详细]
2023-03-09 02:49 分类：问答Preventing deadlock caused by flock
I am trying to simulate a file writing on a busy site. I have written a following code which eventually end up freezing computer.[详细]
2023-02-28 15:57 分类：问答call flock with node.js?
I have cron job to run node.js scripts. Want to use flock to lock a file to make sure 开发者_JS百科my cron jobs are not[详细]
2023-02-25 10:43 分类：问答PHP Flock and File Upload
I have two processes running in different scripts indepdent of each other. PHP #1 script reads the filename of a file and writes it to a DB[详细]
2023-01-21 14:59 分类：问答How can I ensure only one copy of a Perl script is running at a time?
I need to ensure that only one copy of my Perl script is running at a time. According to thesuggestions here I wrote a sub to do the check:[详细]
2023-01-20 08:09 分类：问答Having issues with flock() function
I have a question about how flock() works, particularly in python. I have a module that opens a serial connection (via os.open()). I need to make this thread safe. It\'s easy enough making it thread s[详细]
2023-01-20 04:29 分类：问答Does python's fcntl.flock function provide thread level locking of file access?
Python\'s fcnt module provides a method called [flock][1] to proved file locking. It\'s description reads:[详细]
2023-01-19 14:55 分类：问答
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
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