On 8/30/07, mhearne808 wrote:
I'm having a number of problems with the fcntl module.
Read this first: http://linux.die.net/man/2/flock
First of all, if I try this:
file = open(counter.txt,w+)
fcntl.flock(file.fileno(), fcntl.LOCK_NB)
I get this:
Sorry, that last quote-only reply was accidental. :)
On 8/30/07, mhearne808 wrote:
I've been doing some experiments, and here are some specific examples
to try.
[snipped examples]
From these last two experiments I can only conclude that file locking
isn't doing a durned thing.
What's
On Aug 31, 12:23 am, Miles [EMAIL PROTECTED] wrote:
Sorry, that last quote-only reply was accidental. :)
On 8/30/07, mhearne808 wrote:
I've been doing some experiments, and here are some specific examples
to try.
[snipped examples]
From these last two experiments I can only conclude
On 8/31/07, mhearne808 wrote:
I have a script that will be run from a cron job once a minute. One
of the things this script will do is open a file to stash some
temporary results. I expect that this script will always finish its
work in less than 15 seconds, but I didn't want to depend on
mhearne808[insert-at-sign-here]gmail[insert-dot-here]com [EMAIL PROTECTED]
writes:
I think I'm still confused.
What Miles tried to tell you is that you should call fcnt.flock from
both PA and PB. In the example you posted, you failed to call it from
PB. No lock call, so no locking happened.
On Aug 31, 8:42 am, Miles [EMAIL PROTECTED] wrote:
On 8/31/07, mhearne808 wrote:
I have a script that will be run from a cron job once a minute. One
of the things this script will do is open a file to stash some
temporary results. I expect that this script will always finish its
work in
On 8/31/07, mhearne808 wrote:
Looking at my flock(3) man page, I'm guessing that 35 is the error
code for EWOULDBLOCK. Which system header file am I supposed to look
in to figure that magic number out?
I got the error number by looking at the IOError exception raised when
playing with the
In article [EMAIL PROTECTED],
mhearne808[insert-at-sign-here]gmail[insert-dot-here]com
[EMAIL PROTECTED] wrote:
Looking at my flock(3) man page, I'm guessing that 35 is the error
code for EWOULDBLOCK. Which system header file am I supposed to look
in to figure that magic number out?
On a
In message [EMAIL PROTECTED], Miles
wrote:
except IOError, e:
if e.args[0] == 35:
Why not
except IOError, (ErrNo, Msg) :
if ErrNo == errno.EAGAIN :
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I'm having a number of problems with the fcntl module. First off, my
system info:
Mac OS X
Darwin igskcicglthearn.cr.usgs.gov 8.10.1 Darwin Kernel Version
8.10.1: Wed May 23 16:33:00 PDT 2007; root:xnu-792.22.5~1/RELEASE_I386
i386 i386
Python 2.5.1 (built from source)
OK, the weirdness:
First
On Aug 30, 4:19 pm, mhearne808[insert-at-sign-here]gmail[insert-dot-
here]com [EMAIL PROTECTED] wrote:
I'm having a number of problems with the fcntl module. First off, my
system info:
Mac OS X
Darwin igskcicglthearn.cr.usgs.gov 8.10.1 Darwin Kernel Version
8.10.1: Wed May 23 16:33:00 PDT
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