<div dir="ltr"><div>I found it. </div><div><br></div><div>Thanks </div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Mar 4, 2016 at 1:08 PM, Steve Huston <span dir="ltr"><<a href="mailto:shuston@riverace.com" target="_blank">shuston@riverace.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;font-size:11pt">I recommend using Google to look for it. It’s been at least 10 years since I saw it.<u></u><u></u></span></p>
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<p class="MsoNormal"><b><span style="font-family:"Calibri",sans-serif;font-size:11pt">From:</span></b><span style="font-family:"Calibri",sans-serif;font-size:11pt"> h w [mailto:<a href="mailto:hw77377@gmail.com" target="_blank">hw77377@gmail.com</a>]
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<b>Sent:</b> Friday, March 04, 2016 1:00 PM<br>
<b>To:</b> Steve Huston <<a href="mailto:shuston@riverace.com" target="_blank">shuston@riverace.com</a>><br>
<b>Cc:</b> <a href="mailto:ace-users@list.isis.vanderbilt.edu" target="_blank">ace-users@list.isis.vanderbilt.edu</a><br>
<b>Subject:</b> Re: [ace-users] Help ! Porting ACE Proactor Aio application on Linux<u></u><u></u></span></p>
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<p class="MsoNormal">Thank you very much for your help.<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">If someone did to emulate aio using reactive mechanisms, is it possible to find this code/doc as an example/reference?<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Thanks,<u></u><u></u></p>
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<p class="MsoNormal">On Wed, Mar 2, 2016 at 5:30 PM, Steve Huston <<a href="mailto:shuston@riverace.com" target="_blank">shuston@riverace.com</a>> wrote:<u></u><u></u></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;font-size:11pt">Thank you for the PROBLEM-REPORT-FORM.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;font-size:11pt"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;font-size:11pt">I looked for a bit and found no new developments in Linux kernel aio socket support, so the situation has apparently
not changed.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;font-size:11pt"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;font-size:11pt">Your choices are:</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;font-size:11pt">1. Redesign your application to alternate reads and writes; some protocols won’t support this well, but if you can
it’s the easiest way.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;font-size:11pt">2. Change to using Reactor (particularly, ACE_Dev_Poll_Reactor) on Linux, at least.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;font-size:11pt">3. Write something to emulate aio using reactive mechanisms. There was an effort that did this in ACE quite a few
years ago – maybe you can get your hands on that and see if it could work for you.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;font-size:11pt"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;font-size:11pt">-Steve</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;font-size:11pt"> </span><u></u><u></u></p>
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<p class="MsoNormal"><b><span style="font-family:"Calibri",sans-serif;font-size:11pt">From:</span></b><span style="font-family:"Calibri",sans-serif;font-size:11pt"> ace-users [mailto:<a href="mailto:ace-users-bounces@list.isis.vanderbilt.edu" target="_blank">ace-users-bounces@list.isis.vanderbilt.edu</a>]
<b>On Behalf Of </b>h w<br>
<b>Sent:</b> Tuesday, March 01, 2016 9:45 AM<br>
<b>To:</b> <a href="mailto:ace-users@list.isis.vanderbilt.edu" target="_blank">ace-users@list.isis.vanderbilt.edu</a><br>
<b>Subject:</b> [ace-users] Help ! Porting ACE Proactor Aio application on Linux</span><u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">ACE VERSION: 6.3.0<br>
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HOST MACHINE and OPERATING SYSTEM:<br>
Centos 6.7 and Linux kernel 2.6.32-573.12.1.el6.i686<u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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THE $ACE_ROOT/ace/config.h <u></u><u></u></p>
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<p class="MsoNormal"> #define ACE_LACKS_GETIPNODEBYADDR<br>
#define ACE_LACKS_GETIPNODEBYNAME<u></u><u></u></p>
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<p class="MsoNormal"> #define ACE_HAS_AIO_CALLS<br>
#include "ace/config-linux.h"<u></u><u></u></p>
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<u></u><u></u></p>
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THE $ACE_ROOT/include/makeinclude/platform_macros.GNU <u></u><u></u></p>
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<p class="MsoNormal"> include $(ACE_ROOT)/include/makeinclude/platform_linux.GNU<u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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CONTENTS OF $ACE_ROOT/bin/MakeProjectCreator/config/default.features<br>
no such file<br>
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AREA/CLASS/EXAMPLE AFFECTED: no<br>
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DOES THE PROBLEM AFFECT:<br>
COMPILATION? no<br>
LINKING? no<br>
On Unix systems, did you run make realclean first? Yes, I did.<u></u><u></u></p>
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<br>
SYNOPSIS:<br>
Using ACE Proactor AIO framework on network sockets to exchange messages between two or more endpoints on linux OS. It looked the message read or write blocked or in order.<u></u><u></u></p>
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DESCRIPTION:<u></u><u></u></p>
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<p class="MsoNormal"> I am porting an application into Linux which utilizes ACE proactor AIO framework for a network communication ( read/ write socket ). It works fine on Windows OS. However,
on Linux, The application looked like exchange messages in order, for example, When I tried to send a message to the peer, I found that ACE_POSIX_AIOCB_Proactor did invoke aio_write() but the message did not get sent out util the peer sent a message out,
and then got that previous message in. More worse, most time, when the connector estalished a connection and tried to send the first message, the system got locked up because a read operation probably be put before write operation for listening any incoming
messages.<u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal"> I searched the issue and found the similar issue report in the link but it was several years age:
<a href="https://stevehuston.wordpress.com/2008/11/25/when-is-it-ok-to-use-ace-proactor-on-linux/" target="_blank">
https://stevehuston.wordpress.com/2008/11/25/when-is-it-ok-to-use-ace-proactor-on-linux/</a><u></u><u></u></p>
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<p class="MsoNormal">Is it still the limitation on Linux? Is there any way to get the ACE Proactor AIO work for network communication ( exchange message via socket with full duplex) now? Any help
would be greatly appreciated<u></u><u></u></p>
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<p class="MsoNormal"><br>
Thanks!<u></u><u></u></p>
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