Help with sin fds

QNX Newsgroups (Archives) qdn.public.qnxrtp.os
1

Hi all,

I have an interpretation problem with the output of “sin fds”. My
programm is getting more and more entries of the kind
117s 737317

where the second number is the process ID of my program. The question
is:

What does the “s” mean?
Why do I get those additional FD’s? I am using IPC between the thread
via Channels/Connections, could the problem be a “Connection leak” or
something like that?

Thanks for your help,
Sven

–
Sven Fischer – DEUTA-Werke GmbH, Abteilung EIT
Dipl.-Phys. Paffrather Str. 140, 51465 Bergisch Gladbach, Germany
Tel.: +49-(0)2202-958-216 Fax.: +49-(0)2202-958-145
Please note the disclaimer: http://www.deutaeit.de/disclaimer.html

2

s means that the connection is a ‘side-channel’ and was created
with the _NTO_SIDE_CHANNEL flag.

Sven Fischer <fischer@deutaeit.de> wrote:

Hi all,

I have an interpretation problem with the output of “sin fds”. My
programm is getting more and more entries of the kind
117s 737317

where the second number is the process ID of my program. The question
is:

What does the “s” mean?
Why do I get those additional FD’s? I am using IPC between the thread
via Channels/Connections, could the problem be a “Connection leak” or
something like that?

Thanks for your help,
Sven

–
Sven Fischer – DEUTA-Werke GmbH, Abteilung EIT
Dipl.-Phys. Paffrather Str. 140, 51465 Bergisch Gladbach, Germany
Tel.: +49-(0)2202-958-216 Fax.: +49-(0)2202-958-145
Please note the disclaimer: > http://www.deutaeit.de/disclaimer.html

–
cburgess@qnx.com

3

Colin Burgess <cburgess@qnx.com> writes:

s means that the connection is a ‘side-channel’ and was created
with the _NTO_SIDE_CHANNEL flag.

Wouldn’t it really be great to read something like this in the docs
for ‘sin’? :wink:

Greetings, Sven

–
Sven Fischer – DEUTA-Werke GmbH, Abteilung EIT
Dipl.-Phys. Paffrather Str. 140, 51465 Bergisch Gladbach, Germany
Tel.: +49-(0)2202-958-216 Fax.: +49-(0)2202-958-145
Please note the disclaimer: http://www.deutaeit.de/disclaimer.html

4

Sven Fischer <fischer@deutaeit.de> wrote:
: Colin Burgess <cburgess@qnx.com> writes:

:> s means that the connection is a ‘side-channel’ and was created
:> with the _NTO_SIDE_CHANNEL flag.

: Wouldn’t it really be great to read something like this in the docs
: for ‘sin’? :wink:

Tell your kids not to become tech writers; everyone thinks that writers are
omniscient and that they withhold information out of sheer malevolence. :frowning:

I’ll create a PR for this. Thanks for pointing this out.

Steve Reid stever@qnx.com
TechPubs (Technical Publications)
QNX Software Systems