flock

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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