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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Dimensions CM by Serena’ Category

Crap: the outsourcing party of the client wrote C-code like this in 2005, and nobody scrutinized it

Posted by jpluimers on 2013/06/12

I was involved in a big project migrating a complex stack from Windows XP to Windows 7 x86, and got scared this !@#$ out of me.

The stack communicated to WebSphere MQ on AS/400 from Windows, and on the Windows side of things consisted of a UI developed in in Cool:Gen, a C interface to a Delphi DLL, which takes care of the communication to WebSphere MQ.

Digression:

This all was histerically grown. In the beginning (early to mid 90s last century) it was a big Borland Pascal/Turbo Pascal application – running on DOS, Windows 3.1x, Windows 95 and OS/2 2.x/3.0 – that talked over a propriatary layer over SNA to AS/400.
The vendor of that layer didn’t respond to a request for Windows NT 4.x compatibility, and meanwhile some client applications were about to be developed in Delphi.

So in 1997/1998 – together with a great AS/400 software developer – I wrote a SNA based APPC/CPI-C communication layer in Delphi 3 that could be accessed from both Turbo Pascal (using a file based interface) and Delphi (using an object interface).
The DOS interface was an executable around the Delphi interface, which was a set of classes.

Delphi part

The Delphi part of the DOS interface was centered around FindFirstChangeNotification/CreateProcess combined with MsgWaitForMultipleObjects/WaitForSingleObject to make the waiting as efficient as possible.

DOS part

DOS part

The DOS part of the Delphi interface was centered around this piece to make waiting efficient:

asm
  int $28
  mov ax, $1000
  int $15 { DESQview/TopView give up time slice }
  mov ax, $1680
  int $2F
end;

Thanks to the RBIL: Ralf Brown’s Interrupt List (there are now multiple HTML versions of it), it makes use of these tricks so DOS applications can efficiently wait : Read the rest of this entry »

Posted in C, CVS, Delphi, Delphi 2006, Delphi 3, Delphi 5, Delphi XE2, Development, Dimensions CM by Serena, MKS Integrity, Software Development, Source Code Management | 3 Comments »

Some links on Serena Dimensions DMCLI command-line usage

Posted by jpluimers on 2011/06/29

A client uses Serena Dimensions, and though the Windows and Web clients are very usable (the 2009 version actually feels a lot faster than version 8), often it is nice to do some of the work on the command-line.

They have the DMCLI tool for with documentation, but that is not available on-line.
There is not a lot of on-line DMCLI documentation available, so here are some links I used to get going:

–jeroen

Posted in Development, Dimensions CM by Serena, Source Code Management | Leave a Comment »

 
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