<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<div class="moz-cite-prefix">Hi<br>
<br>
Don't know anything about memory mapped files but two comments...<br>
<br>
1. Try it without the sleep(). If the sleep is in the main
thread it could cause you problems.<br>
2. Perhaps you are low on RAM and the in memory file is actually
having to be paged to disk! <br>
<br>
Hope that's of some use :)<br>
Rob<br>
<br>
On 12/06/2013 12:02 a.m., Ross Levis wrote:<br>
</div>
<blockquote cite="mid:00d201ce669b$99b14a20$cd13de60$@com"
type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1">
<meta name="Generator" content="Microsoft Word 12 (filtered
medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:PMingLiU;
panose-1:2 2 3 0 0 0 0 0 0 0;}
@font-face
{font-family:PMingLiU;
panose-1:2 2 3 0 0 0 0 0 0 0;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:"\@PMingLiU";
panose-1:2 2 3 0 0 0 0 0 0 0;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
<div class="WordSection1">
<p class="MsoNormal"><span
style="font-size:12.0pt;color:#1F497D">I’m using a shared
memory component in 2 apps which communicate with each
other.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;color:#1F497D"> <o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;color:#1F497D">I use a shared memory
component which uses a memory mapped file with no actual
file on the hard drive.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;color:#1F497D">I seem to be having a
problem with communications between the 2 apps when the hard
drive is busy. It appears a change to the shared memory is
not showing up in the other app for over 20 seconds while
the hard drive is busy. Does that sound possible in your
opinion?<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;color:#1F497D">It doesn’t make any
sense to me but that’s all I can come up with currently.
Communication appears to stop sometimes when a separate
thread starts up every 24 hours to load the contents of
perhaps 3000 small files into RAM. There is a sleep(15)
between access of each file to prevent the drive being too
busy, but yet this issue can occur sometimes during the 30
odd seconds this thread is running.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;color:#1F497D">Cheers,<br>
Ross.<o:p></o:p></span></p>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
NZ Borland Developers Group - Delphi mailing list
Post: <a class="moz-txt-link-abbreviated" href="mailto:delphi@listserver.123.net.nz">delphi@listserver.123.net.nz</a>
Admin: <a class="moz-txt-link-freetext" href="http://delphi.org.nz/mailman/listinfo/delphi">http://delphi.org.nz/mailman/listinfo/delphi</a>
Unsubscribe: send an email to <a class="moz-txt-link-abbreviated" href="mailto:delphi-request@listserver.123.net.nz">delphi-request@listserver.123.net.nz</a> with Subject: unsubscribe</pre>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<p class="" avgcert""="" color="#000000" align="left">No virus
found in this message.<br>
Checked by AVG - <a moz-do-not-send="true"
href="http://www.avg.com">www.avg.com</a><br>
Version: 2013.0.3345 / Virus Database: 3199/6402 - Release Date:
06/11/13</p>
</blockquote>
<br>
</body>
</html>