[U2] [UV] Obtaining a file creation date and time without locking it
Hello, Currently I have code that does something like this: EQU TM.LIMIT TO 3 ;* File useable if created less than TM.LIMIT seconds ago. OPENSEQ PATH.HOUSE:ipcs.txt TO F.IPCS ELSE RETURN STATUS STAT FROM F.IPCS THEN CLOSESEQ F.IPCS IPCS.TM = STAT15 IPCS.DT = STAT16 SEC.PASSED = (DATE() - IPCS.DT) * 86400 SEC.PASSED += (TIME() - IPCS.TM) IF SEC.PASSED TM.LIMIT THEN RETURN ;* Too old can't use it END The problem with this approach, is that in order to query the file's internal date and time, I have to do an OPENSEQ which locks the file. This means that another process that may need to perform the same check has to wait for the lock to be released. Any way to open the file in a ReadOnly mode in UV so that It won't get locked ? Jacques ___ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users
Re: [U2] [UV] Obtaining a file creation date and time without locking it
Someone posted a program to do this a couple of years ago. I can post my version if needed. Rich Richard Sammartino Systems Analyst School District of Philadelphia 440 N Broad Street Philadelphia, PA 19130 Phone (215) 400-5086 Fax (215) 400-4411 - Original Message - From: Jacques G. jacque...@yahoo.com To: U2 Users List u2-users@listserver.u2ug.org Sent: Thursday, June 2, 2011 1:50:03 PM Subject: [U2] [UV] Obtaining a file creation date and time without locking it Hello, Currently I have code that does something like this: EQU TM.LIMIT TO 3 ;* File useable if created less than TM.LIMIT seconds ago. OPENSEQ PATH.HOUSE:ipcs.txt TO F.IPCS ELSE RETURN STATUS STAT FROM F.IPCS THEN CLOSESEQ F.IPCS IPCS.TM = STAT15 IPCS.DT = STAT16 SEC.PASSED = (DATE() - IPCS.DT) * 86400 SEC.PASSED += (TIME() - IPCS.TM) IF SEC.PASSED TM.LIMIT THEN RETURN ;* Too old can't use it END The problem with this approach, is that in order to query the file's internal date and time, I have to do an OPENSEQ which locks the file. This means that another process that may need to perform the same check has to wait for the lock to be released. Any way to open the file in a ReadOnly mode in UV so that It won't get locked ? Jacques ___ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users ___ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users
Re: [U2] [UV] Obtaining a file creation date and time without locking it
On Thu, Jun 2, 2011 at 4:30 PM, Sammartino, Richard
rsamm...@philasd.org wrote:
Someone posted a program to do this a couple of years ago. I can post my
version if needed.
Rich
Richard Sammartino
Systems Analyst
School District of Philadelphia
440 N Broad Street
Philadelphia, PA 19130
Phone (215) 400-5086
Fax (215) 400-4411
- Original Message -
From: Jacques G. jacque...@yahoo.com
To: U2 Users List u2-users@listserver.u2ug.org
Sent: Thursday, June 2, 2011 1:50:03 PM
Subject: [U2] [UV] Obtaining a file creation date and time without locking it
Hello,
Currently I have code that does something like this:
EQU TM.LIMIT TO 3 ;* File useable if created less than TM.LIMIT seconds ago.
OPENSEQ PATH.HOUSE:ipcs.txt TO F.IPCS ELSE RETURN
STATUS STAT FROM F.IPCS THEN
CLOSESEQ F.IPCS
IPCS.TM = STAT15
IPCS.DT = STAT16
SEC.PASSED = (DATE() - IPCS.DT) * 86400
SEC.PASSED += (TIME() - IPCS.TM)
IF SEC.PASSED TM.LIMIT THEN RETURN ;* Too old can't use it
END
The problem with this approach, is that in order to query the file's internal
date and time, I have to do an OPENSEQ which locks the file. This means that
another process that may need to perform the same check has to wait for the
lock
to be released.
Any way to open the file in a ReadOnly mode in UV so that It won't get locked
?
Jacques
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I would just do an EXECUTE to a scripting language and parse the results.
An ls -l with some awk will make quick work of it.
Here is a thread that describes ways to do it in python.
http://stackoverflow.com/questions/237079/how-to-get-file-creation-modification-date-times-in-python
PCPERFORM \python -c import os; print os.stat('test.xml').st_mtime\
CAPTURING OUTPUT will come back with the modification time in epoch
time.
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Re: [U2] [UV] Obtaining a file creation date and time without locking it
Have you had a look at the openpath statement? That shouldn't lock it AFAIK. openpath path.house:ipcs.txt to f.ipcs then status stat from f.ipcs Stuart -Original Message- From: u2-users-boun...@listserver.u2ug.org [mailto:u2-users-boun...@listserver.u2ug.org] On Behalf Of Jacques G. Sent: Friday, 3 June 2011 03:50 To: U2 Users List Subject: [U2] [UV] Obtaining a file creation date and time without locking it Hello, Currently I have code that does something like this: EQU TM.LIMIT TO 3 ;* File useable if created less than TM.LIMIT seconds ago. OPENSEQ PATH.HOUSE:ipcs.txt TO F.IPCS ELSE RETURN STATUS STAT FROM F.IPCS THEN CLOSESEQ F.IPCS IPCS.TM = STAT15 IPCS.DT = STAT16 SEC.PASSED = (DATE() - IPCS.DT) * 86400 SEC.PASSED += (TIME() - IPCS.TM) IF SEC.PASSED TM.LIMIT THEN RETURN ;* Too old can't use it END The problem with this approach, is that in order to query the file's internal date and time, I have to do an OPENSEQ which locks the file. This means that another process that may need to perform the same check has to wait for the lock to be released. Any way to open the file in a ReadOnly mode in UV so that It won't get locked ? Jacques ___ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users ___ U2-Users mailing list U2-Users@listserver.u2ug.org http://listserver.u2ug.org/mailman/listinfo/u2-users
