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Posted to dev@mina.apache.org by "Emmanuel Lecharny (JIRA)" <ji...@apache.org> on 2009/03/12 19:18:50 UTC
[jira] Updated: (DIRMINA-671) AbstractPollingIoProcessor
[ https://issues.apache.org/jira/browse/DIRMINA-671?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Emmanuel Lecharny updated DIRMINA-671:
--------------------------------------
Fix Version/s: 3.0.0-M1
(I moved it to 3.0)
This is not a bug, it's a "feature". Ok, call it a bloody hack. For some reason, in order to get statistics updated (more precisely, the number of sent messages), you _have_ to send an empty message. This is what is done here.
I 200% agree that it's totally useless, bad, ugly, disgusting. We should be able to update the statistics using the WriteFuture created when we call the session.write(). More important, the statistics should _not_ be handled before the chain, but should be a Filter.
> AbstractPollingIoProcessor
> --------------------------
>
> Key: DIRMINA-671
> URL: https://issues.apache.org/jira/browse/DIRMINA-671
> Project: MINA
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.0.0-M4
> Reporter: Aaron Wald
> Priority: Minor
> Fix For: 3.0.0-M1
>
>
> In flushNow() it appears to me that when writeBuffer is called, when the buffer is completely sent, we will always come into the buffer isn't empty check.
> if (message instanceof IoBuffer) {
> localWrittenBytes = writeBuffer(
> session, req, hasFragmentation,
> maxWrittenBytes - writtenBytes,
> currentTime);
> if (localWrittenBytes > 0 && ((IoBuffer)message).hasRemaining() ) {
> // the buffer isn't empty, we re-interest it in writing
> writtenBytes += localWrittenBytes;
> setInterestedInWrite(session, true);
> return false;
> }
> }
> In writeBuffer this is done:
> if (!buf.hasRemaining() ||
> !hasFragmentation && localWrittenBytes != 0) {
> // Buffer has been sent, clear the current request.
> buf.reset();
> fireMessageSent(session, req);
> }
> fireMessageSent clears the write request, so when we come back after select() we wont double send data but it seems like twice the work is being done.
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