Hi Stephan,
I misspoke on Q2. It wasn't compilation error but a register error
CannotRegisterImplementationException:loading component library failed:.
I am not sure how to debug this as same code with osl::socket registers. Do I
need to link with certain libs?
regcomp -register -r CalcAddinThr.rdb -c libCalcAddinThr.so
libCalcAddinThr.so
register component 'libCalcAddinThr.so' in registry 'CalcAddinThr.rdb'
failed!
error (CannotRegisterImplementationException): loading component
library failed: libCalcAddinThr.so
make: *** [regcomp.flag] Error 1
Thanks
Neeraj
-----Original Message-----
From: Stephan Bergmann [mailto:[email protected]]
Sent: Monday, January 28, 2013 11:43 AM
To: Rai, Neeraj [ICG-MKTS]
Cc: '[email protected]'
Subject: Re: [libreoffice-dev] - libreoffice 4.0 - waiting on multiple sockets
On 01/28/2013 04:04 PM, Rai, Neeraj wrote:
> I had tried interprocess communication before and found it to be slow (12 sec
> vs 14ms).
> Somewhere in the docs, there was a mention that it has latency of 2ms.
> However, if you can point me to samples or provide other advise that make it
> as fast as osl::socket, I'd be happy to switch back to it.
"Generic" UNO IPC with all its bells and whistles easily introduces more
overhead than any solution tailored to one specific use-case, but "12
sec vs 14ms" surely sounds broken. Hard to tell what's gone wrong there
from a high-level perspective.
> Q2. Instead of using osl::AcceptorSocket and osl::ConnectorSocket,
> I tried to use
> #include <sys/socket.h>
> int socket = (PF_INET, SOCK_STREAM, 0);
> bind(socket, addr, addrlen);
> listen (socket, 5);
> This would allow me use scalable epoll but I had trouble compiling
> it.
There should be no general reason this should not work. (It would mean
the code is platform-specific, of course.)
> Q3. I would like to understand more about how these threads interact with
> connection::read/write.
> Is there an extra thread created for me per connection ?
> write would be called in my user thread. Is the data queued for
> writer thread ?
> read is called in my user thread. Is it listening on some UNO
> queue to which the dedicated reader thread queues data ?
> Or did you mean that I should create a dedicated thread per
> connection because read/write are blocking calls ?
Reading/writing are blocking operations at the OSL socket level.
Stephan
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