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  1.  Home
  2. RPG400-L
  3. August 2016

RE: USleep

Hi Jerry
Your code is not set up to capture an error
The example I found is
/Free

returnStatus = USleep(MSeconds);
*inLr = *on;
/End-Free

Alan Shore
E-mail : ASHORE@xxxxxxxx
Phone [O] : (631) 200-5019
Phone [C] : (631) 880-8640
‘If you're going through hell, keep going.’
Winston Churchill


-----Original Message-----
From: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of (WalzCraft) Jerry Forss
Sent: Thursday, August 04, 2016 12:43 PM
To: 'RPG programming on the IBM i (AS/400 and iSeries)' <rpg400-l@xxxxxxxxxxxx>
Subject: RE: USleep

No error is being thrown, which would have helped.

-----Original Message-----
From: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Alan Shore
Sent: Thursday, August 4, 2016 11:37 AM
To: RPG programming on the IBM i (AS/400 and iSeries)
Subject: RE: USleep

Hi Jerry
Looking at this web site
http://publib.boulder.ibm.com/iseries/v5r1/ic2924/index.htm?info/apis/usleep.htm
It looks like you will get an error if the time interval specified is
1,000,000 or more microseconds
Alan Shore
E-mail : ASHORE@xxxxxxxx
Phone [O] : (631) 200-5019
Phone [C] : (631) 880-8640
‘If you're going through hell, keep going.’
Winston Churchill


-----Original Message-----
From: Alan Shore
Sent: Thursday, August 04, 2016 12:32 PM
To: 'RPG programming on the IBM i (AS/400 and iSeries)' <rpg400-l@xxxxxxxxxxxx>
Subject: RE: USleep

Hi Jerry
I looked at the write up about usleep here
http://www-01.ibm.com/support/docview.wss?uid=nas8N1012283
The piece that got my attention is
If you need to delay the job for less than a second See extract below

The function usleep() is a C API that suspends the current process for the number of microseconds passed to it. It can be used for delaying a job. DLYJOB works well if you are looking to delay a job for more than a second. If you need to delay the job for less than a second, however, you must use the usleep() API. The usleep() API is contained in the service program QSYS/QP0SSRV1. The prototype is as follows:

Because your time is over 3 seconds - is the delay only for .267000 seconds

Just my .02 worth

Alan Shore
E-mail : ASHORE@xxxxxxxx
Phone [O] : (631) 200-5019
Phone [C] : (631) 880-8640
‘If you're going through hell, keep going.’
Winston Churchill

-----Original Message-----
From: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of (WalzCraft) Jerry Forss
Sent: Thursday, August 04, 2016 12:25 PM
To: 'RPG programming on the IBM i (AS/400 and iSeries)' <rpg400-l@xxxxxxxxxxxx>
Subject: RE: USleep

I run it in debug.

The examples I have seen have the value defined as 10U 0.
I did try as integer with no change.

-----Original Message-----
From: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Jon Paris
Sent: Thursday, August 4, 2016 11:22 AM
To: Rpg400 Rpg400-L
Subject: Re: USleep

The return value should be an integer not a an unsigned I believe but that would not make a difference.

You don’t appear to have any timing mechanism in the program so how do you know if it is sleeping or not?


Jon Paris

www.partner400.com
www.SystemiDeveloper.com

On Aug 4, 2016, at 12:07 PM, (WalzCraft) Jerry Forss <JForss@xxxxxxxxxxxxx> wrote:

Hi All,

I am testing the following code:

H Option(*SrcStmt : *NoDebugIO)
H DftActGrp(*No) ActGrp(*Caller) BndDir('QC2LE')

D MicroSec S 10U 0
D StrStamp S Z Inz(Z'2016-07-05-18.55.04.377000')
D EndStamp S Z Inz(Z'2016-07-05-18.55.01.110000')

D USleep PR 10U 0 ExtProc('usleep')
D 10U 0 Value

/Free

MicroSec = %Diff(StrStamp : EndStamp : *MSeconds);

USleep(MicroSec);

*InLr = '1';

The MicroSec gets loaded with 3267000.

When it executes the USleep it should delay 3267000 micro seconds (3.267000 seconds).

There is NO delay at all. What am I not doing correctly?

I am currently on 5.4 (I know, working on it)

Jerry Forss
Information Technology Team
WalzCraft
608-781-6355 EXT 2530
jforss@xxxxxxxxxxxxx


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