Re: Multi-threading CRTDUPOBJ

Read the ILE RPG Programmers Guide

1. you did not state what version / release of OS/400 or IBM i you are working on.

2. OS/400 and IBM i do not support multithreading in an interactive (5250) job, (no matter what language you code your programs in.)

3. (page 21 of the V5R4 ILE RPG Programmers Guide) "ILE RPG does not directly support initiating or managing program threads."

4. (page 158 of the V5R4 ILE RPG Programmers Goude) "Normally, running an application in multiple threads can improve the performance of the application. In the case of ILE RPG, this is not true in general."

RTFM

> On 3/4/2013 8:37 AM, RPGLIST wrote:

I am trying to multi-thread the creation of some qtemp objects, but its
not working as it should be. I did check and CRTDUPOBJ is thread safe.

I have a file which contains a list of objects that I need to create in
qtemp, now I have tested this without using the multi-threading code and
everything works fine, so it has something to do with the multi-threading
portion.

Any help would be greatly appreciated.


0001.00 HOPTION(*NODEBUGIO:*SRCSTMT:*noshowcpy:*NOUNREF)
0002.00 Hdftactgrp(*NO) THREAD(*CONCURRENT)
0003.00
0004.00 /copy qsysinc/qrpglesrc,pthread
0004.01 /copy qsysinc/qrpglesrc,errno
0005.00
0012.00
0012.02 D THREAD_COUNT c 1
0012.03
0012.04 D Sleep pr 10u 0 extproc('sleep')
0012.05 D secs 10u 0 value
0012.08
0012.09 D qCmdExc pr Extpgm('QCMDEXC')
0012.10 D cmd 200a options(*varsize) const
0012.11 D cmdlen 15 5
0012.12
0012.13 D qcmd s 200a
0012.14 D qcmdlen s 15 5 Inz(0)
0012.15
0012.21
0013.00 D thr_id ds likeds(pthread_t)
0013.01 D* dim(THREAD_COUNT)
0013.02 D err s 10i 0
0013.03 D x s 10i 0
0013.04 D y s 10i 0
0014.00
0015.00 /Free
0015.09 // For x = 1 to THREAD_COUNT;
0015.11 err = pthread_create( thr_id
0015.12 : *omit
0015.13 : %pAddr(MyProcPF)
0015.14 : *Null );
0015.15 // MyProcPF();
0015.16 If (err <> 0);
0015.17 Endif;
0015.18 // EndFor;
0015.19
0015.20 // for x = 1 to THREAD_COUNT;
0015.21 pthread_join( thr_id : *omit );
0015.22 //EndFor;
0015.23
0015.24 *Inlr = *On;
0016.00 /End-Free
0017.00
0017.01 P MyProcPF b
0017.02 Ffilelist if e k Disk Qualified
0017.03 F Static
0017.04 D pi
0017.05 D Create_parm * Value
0017.06 D MyDs ds LikeRec(FileList.rFileList)
0017.07 D Mytype s 2a Inz('PF')
0017.08 D MyError s 10i 0
0017.09
0017.10 /Free
0017.11 Setll (MyType) FileList;
0017.12 Reade (MyType) FileList MyDs;
0017.13 Dow Not %Eof(FileList);
0017.14 qCmd = 'CRTDUPOBJ OBJ(' + MyDs.FileName + ') +
0017.15 FROMLIB(*LIBL) OBJTYPE(*FILE) TOLIB(QTEMP)';
0017.16 qCmdLen = %Len(%Trim(qCmd));
0017.17 MyError = qCmdExc (qcmd: qCmdLen);
0017.18 Reade (MyType) FileList MyDs;
0017.19 EndDo;
0017.20 // Sleep(30);
0017.21 // return *Null;
0017.22 /End-Free
0017.23
0017.24 P MyProcPF e
0021.00