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<DIV><SPAN class=156421021-08052007><FONT face=Arial color=#0000ff size=2>Hi
Ross,</FONT></SPAN></DIV>
<DIV><SPAN class=156421021-08052007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=156421021-08052007><FONT face=Arial color=#0000ff size=2>I am
currently using a memory mapped file.</FONT></SPAN></DIV>
<DIV><SPAN class=156421021-08052007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=156421021-08052007><FONT face=Arial color=#0000ff
size=2>Regards</FONT></SPAN></DIV>
<DIV><SPAN class=156421021-08052007><FONT face=Arial color=#0000ff
size=2>Leigh</FONT></SPAN></DIV>
<DIV><SPAN class=156421021-08052007></SPAN><FONT face=Tahoma><BR><FONT
size=2><SPAN class=156421021-08052007><FONT face=Arial
color=#0000ff> </FONT></SPAN>-----Original Message-----<BR><B>From:</B>
delphi-bounces@delphi.org.nz [mailto:delphi-bounces@delphi.org.nz]<B>On Behalf
Of </B>Ross Levis<BR><B>Sent:</B> Tuesday, 8 May 2007 5:37 p.m.<BR><B>To:</B>
'NZ Borland Developers Group - Delphi List'<BR><B>Subject:</B> RE: [DUG] Sending
data between process on same computer on windows<BR><BR></FONT></DIV></FONT>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=Section1>
<P class=MsoNormal><SPAN
style="COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">I would use shared
memory. I use this free component.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">http://www.torry.net/vcl/system/appscommunications/sharedmemory.zip<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">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.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">Ross.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<DIV>
<DIV
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0cm; BORDER-TOP: #b5c4df 1pt solid; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; PADDING-TOP: 3pt; BORDER-BOTTOM: medium none">
<P class=MsoNormal><B><SPAN lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'">From:</SPAN></B><SPAN
lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'">
delphi-bounces@delphi.org.nz [mailto:delphi-bounces@delphi.org.nz] <B>On
Behalf Of </B>Myles Penlington<BR><B>Sent:</B> Tuesday, 8 May 2007
9:40<BR><B>To:</B> NZ Borland Developers Group - Delphi
List<BR><B>Subject:</B> RE: [DUG] Sending data between process on same
computer on windows<o:p></o:p></SPAN></P></DIV></DIV>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">Shared
memory of course!<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">How
much data are you talking about, how often?<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">For
IPC, IMO, I would never use Sendmessage for something that needed to be 100%
reliable.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">Myles.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<DIV>
<DIV
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0cm; BORDER-TOP: #b5c4df 1pt solid; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; PADDING-TOP: 3pt; BORDER-BOTTOM: medium none">
<P class=MsoNormal><B><SPAN lang=EN-US
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'">From:</SPAN></B><SPAN
lang=EN-US style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'">
delphi-bounces@delphi.org.nz [mailto:delphi-bounces@delphi.org.nz] <B>On
Behalf Of </B>Leigh Wanstead<BR><B>Sent:</B> Tuesday, 8 May 2007
09:35<BR><B>To:</B> delphi@delphi.org.nz<BR><B>Subject:</B> [DUG] Sending data
between process on same computer on windows<o:p></o:p></SPAN></P></DIV></DIV>
<P class=MsoNormal><o:p> </o:p></P>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">Hello
everyone,</SPAN><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal> <o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">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?</SPAN><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal> <o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">TIA</SPAN><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal> <o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">Regards</SPAN><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">Leigh</SPAN><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'"><A
href="http://www.smootharm.com">www.smootharm.com</A></SPAN><o:p></o:p></P></DIV>
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