[gmx-developers] gmx I/O redirection troubles

Schulz, Roland roland.schulz at intel.com
Thu Jan 5 21:31:27 CET 2017


Your patch doesn’t compile. That’s why we usually don’t accept changes other than through Gerrit.

Make sure to sign up for an account on Gerrit first. Then use either the http or ssh connection shown on:

Note the “anonymous http” connection doesn’t work for upload. Make sure that the http/ssh connection is allowed through your firewall. Both are guaranteed to work on our side.


From: Boris Timofeev [mailto:boristim at mail.ru]
Sent: Thursday, January 5, 2017 1:59 AM
To: Schulz, Roland <roland.schulz at intel.com>
Subject: Re[2]: [gmx-developers] gmx I/O redirection troubles

Unfortunately, there are some difficulties with

Gerrit.gromacs.org connection. Therefore a patch in attachment.

Вторник, 3 января 2017, 0:33 +03:00 от "Schulz, Roland" <roland.schulz at intel.com<mailto:roland.schulz at intel.com>>:


Please upload a patch to Gerrit.gromacs.org.


From: gromacs.org_gmx-developers-bounces at maillist.sys.kth.se<mailto:gromacs.org_gmx-developers-bounces at maillist.sys.kth.se> [mailto:gromacs.org_gmx-developers-bounces at maillist.sys.kth.se] On Behalf Of Boris Timofeev
Sent: Monday, January 2, 2017 10:26 AM
To: gromacs.org_gmx-developers at maillist.sys.kth.se<mailto:gromacs.org_gmx-developers at maillist.sys.kth.se>
Subject: [gmx-developers] gmx I/O redirection troubles

Now I finish development of Win64 GUI for a call of the Gromacs commands.
It uses well structured help of Gromacs utilities for dynamic creation of modeless dialog boxes
for a choice of parameters of a commands and then commands execution.
It is implemented by non-blocked I/O redirection of gmx I/O through named pipes.

The main problem which I taked - The commands in interactive mode of user interaction hungs up,
so without showing anything in the pipes. After some time of dances with tambourines (debugging),
I understood that faults caused by buffering of stdout/stderr,
the problem was solved by adding of fflush (stdout/stderr) before an interactive call of fgets (., stdin).
In this regard I have any questions to developpers:
- whether it makes a sense to add correction to a repository or it is better to make it to authors of a code?
- why such disorder with use of stdout and stderr in sources?
List of files witsh adding fflush:


And may be anything else?

Boris Timofeev

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