[mythtv-firehose] mythtv branch master updated by jyavenard. v0.28-pre-1117-g3771b88

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The branch, master has been updated on the
mythtv repository by gitolite user jyavenard.
       via  3771b8872a8d545faa63c39f3aa2b852bcc11e78 (commit)
       via  c1e5b232d779b019441f5bf0a246f7f3ae1583cb (commit)
      from  d7eb6bddc2061287d15bade8d275f9422362f969 (commit)

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- Log -----------------------------------------------------------------
commit 3771b8872a8d545faa63c39f3aa2b852bcc11e78
Author:    Cédric Schieli <cschieli at gmail.com> at Sat, 1 Feb 2014 10:35:28 +0100
Committer: Jean-Yves Avenard <jyavenard at mythtv.org> at Thu, 1 May 2014 13:55:43 +1000
URL:       http://code.mythtv.org/cgit/mythtv/commit/?id=3771b8872a8d545faa63c39f3aa2b852bcc11e78

Fix random SBE PlaybackSock timeout in MBE.
SBE PlaybackSocks in the master suffer from random disconnection, occuring
after a 7000 ms timeout. It often happens when a frontend ask for the
thumbnail of a program currently being recorded on a slave backend.

I could identify two problems causing this:

First, there is a race between MainServer::ProcessRequestWork and
PlaybackSock::SendReceiveStringList. Even if callbacks are disabled during
SendReceiveStringList execution, a ProcessRequestWork may already be running
and can swallow the reply, leading to the timeout in SendReceiveStringList.

The second problem is that an invocation of ProcessRequestWork is fired for
each block of data arriving in the socket (for example when a reply is long
enough to be fragmented, ie. GENERATED_PIXMAP) but this data is consumed all at
once by one worker, leaving the other workers without food. This also leads to
the timeout in ReadStringList.

This patch fixes the first problem by assuring that no worker reads from the
socket while a SendReceiveStringList is running and the second one by aborting
a worker if there is no more data to read, but only once the lock has been
acquired.

Signed-off-by: Jean-Yves Avenard <jyavenard at mythtv.org>



commit c1e5b232d779b019441f5bf0a246f7f3ae1583cb
Author:    Jean-Yves Avenard <jyavenard at mythtv.org> at Thu, 1 May 2014 13:52:22 +1000
Committer: Jean-Yves Avenard <jyavenard at mythtv.org> at Thu, 1 May 2014 13:52:22 +1000
URL:       http://code.mythtv.org/cgit/mythtv/commit/?id=c1e5b232d779b019441f5bf0a246f7f3ae1583cb

Revert "Fix random SBE PlaybackSock timeout in MBE."
Incorrect author name

This reverts commit d7eb6bddc2061287d15bade8d275f9422362f969.



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Summary of changes:
 mythtv/programs/mythbackend/playbacksock.cpp |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

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