The Linux version of mqueue that I am using is implemented as a Linux filesystem. I am reading now, Brandon.<br><br>V.<br><br><div class="gmail_quote">On Sat, May 10, 2008 at 4:09 PM, Brandon S. Allbery KF8NH <<a href="mailto:allbery@ece.cmu.edu">allbery@ece.cmu.edu</a>> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div style=""><div class="Ih2E3d"><br><div><div>On 2008 May 10, at 16:47, Galchin, Vasili wrote:</div>
<br><blockquote type="cite"> Last night I sent out an announcement about some POSIX work that I have been doing. In any case, one of the FFI wrappers is driving me crazy, i.e. the one for mq_receive:<a href="http://opengroup.org/onlinepubs/007908799/xsh/mq_receive.html" target="_blank">http://opengroup.org/onlinepubs/007908799/xsh/mq_receive.html</a> . When I call this function (mqReceive), I get "message too long". In my test cases I am sending and receiving messages that are only 11 bytes! The wrapper seems really straightforward. Perhaps I am looking right at the problem and don't see. I need other eyes on the wrapper to help me ;^). Please see below.<br>
</blockquote></div><div><br></div></div><div>What's the other end sending?</div><div><br></div><div>I suspect most implementations of mq_receive() layer it on top of msgrcv(), which can return E2BIG (== EMSGSIZE) if the message to be received is larger than the receiving buffer --- a condition which I note mq_receive() does not document (unless mq_msgsize means a given queue only supports fixed size messages, which seems odd).</div>
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<font face="Monaco"><span style="font-family: Monaco;"><span style="font-family: Monaco;">-- </span></span></font></div><div><font face="Monaco"><span style="font-family: Monaco;"><span style="font-family: Monaco;">brandon s. allbery [solaris,freebsd,perl,pugs,haskell] <a href="mailto:allbery@kf8nh.com" target="_blank">allbery@kf8nh.com</a></span></span></font></div>
<div><font face="Monaco"><span style="font-family: Monaco;"><span style="font-family: Monaco;">system administrator [openafs,heimdal,too many hats] <a href="mailto:allbery@ece.cmu.edu" target="_blank">allbery@ece.cmu.edu</a></span></span></font></div>
<div><font face="Monaco"><span style="font-family: Monaco;"><span style="font-family: Monaco;">electrical and computer engineering, carnegie mellon university KF8NH</span></span></font></div><span style="border-collapse: separate; border-spacing: 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 11px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px;"><br>
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