[DUG] Sending data between process on same computer on windows

[Leigh Wanstead]

Hi Ross,

I am currently using a memory mapped file.

Regards
Leigh

 -----Original Message-----
From: delphi-bounces at delphi.org.nz [mailto:delphi-bounces at delphi.org.nz]On
Behalf Of Ross Levis
Sent: Tuesday, 8 May 2007 5:37 p.m.
To: 'NZ Borland Developers Group - Delphi List'
Subject: RE: [DUG] Sending data between process on same computer on windows


  I would use shared memory.  I use this free component.

  http://www.torry.net/vcl/system/appscommunications/sharedmemory.zip



  It uses a memory mapped file system but without a physical file.  It can
use messages for triggering events at each end, but I actually use a
variable in a record which I check in a 10ms loop to know when to do
something.  It works very well.



  Ross.



  From: delphi-bounces at delphi.org.nz [mailto:delphi-bounces at delphi.org.nz]
On Behalf Of Myles Penlington
  Sent: Tuesday, 8 May 2007 9:40
  To: NZ Borland Developers Group - Delphi List
  Subject: RE: [DUG] Sending data between process on same computer on
windows



  Shared memory of course!



  How much data are you talking about, how often?



  For IPC, IMO, I would never use Sendmessage for something that needed to
be 100% reliable.



  Myles.



  From: delphi-bounces at delphi.org.nz [mailto:delphi-bounces at delphi.org.nz]
On Behalf Of Leigh Wanstead
  Sent: Tuesday, 8 May 2007 09:35
  To: delphi at delphi.org.nz
  Subject: [DUG] Sending data between process on same computer on windows



  Hello everyone,



  May I ask what is the fastest way to send data between process on same
computer on windows? I assume sendmessage api faster than semaphore waiting,
of course faster than TCP/IP which will go through huge amounts of tcp/ip
stack. I just want lowest overhead on per call. Anyone have any experiences
on that?



  TIA



  Regards

  Leigh

  www.smootharm.com

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