Re: [ILUG] [OT] perl: file locking with flock

From: Donnchadh Q=20Donnabh=E1in?= (d_odonnabhain at domain vistech.ie)
Date: Mon 28 Feb 2000 - 17:29:05 GMT

Next message: Bernard Tyers: "RE: [ILUG] Blackbox WM errors.."
Previous message: Thomas B. Quillinan: "[ILUG] Re: ILUG digest, Vol 1 #707 - 26 msgs"
In reply to: John Gaughan: "RE: [ILUG] [OT] perl: file locking with flock"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]
Mail actions: [ respond to this message ] [ mail a new topic ]

John Gaughan wrote:
> attempt to flock() fails. One other thing. I'm not sure it this is normal
> behaviour for the libc version of flock(), but if the file has been locked
> already, perl's flock() appears to wait for the first lock to be released
> and then locks the file, rather than returning an error.

According to the flock(2) manpage this is correct. If you want
nonblocking behaviour use LOCK_NB and flock will fail with errno =
EWOULDBLOCK

Donnchadh

-- 
// Donnchadh O Donnabhain  mailto:d_odonnabhain at domain vistech.ie
// Vistech Software        http://www.vistechsoftware.com
// Inchvale House, Douglas West, Cork, Ireland
// Ph. +353-21-918166      Fax +353-21-896142

Next message: Bernard Tyers: "RE: [ILUG] Blackbox WM errors.."
Previous message: Thomas B. Quillinan: "[ILUG] Re: ILUG digest, Vol 1 #707 - 26 msgs"
In reply to: John Gaughan: "RE: [ILUG] [OT] perl: file locking with flock"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]
Mail actions: [ respond to this message ] [ mail a new topic ]

This archive was generated by hypermail 2.1.6 : Thu 06 Feb 2003 - 13:05:30 GMT