 06 Nov 2025, Konstantin Olchanski, Info, make clang-tidy
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I added Makefile rules for running MIDAS through the clang-tidy static code
analyzer. (rules for running cppcheck have gone missing, I hope I find them).
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 21 Nov 2025, Konstantin Olchanski, Info, cppcheck
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> (rules for running cppcheck have gone missing, I hope I find them).
found them. I built cppcheck from sources.
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21 Nov 2025, Scott Oser, Bug Report, Cannot edit values in a subtree containing only a single array of BOOLs using the ODB web interface
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I think I've found a bug in MIDAS ...
Description: If you have an ODB subtree that contains only an array of BOOLs, you cannot edit them from the ODB webpage, although you can change |
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19 Nov 2025, Stefan Mathis, Forum, Control external process from inside MIDAS
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Dear all,
I want to control (start / stop / monitor its stdout and stderr) an external process (systemd / EPICS IOC shell script) from within MIDAS.
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19 Nov 2025, Nick Hastings, Forum, Control external process from inside MIDAS
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Hi,
what you describe is exactly how I normally run mhttpd, mlogger, mserver and some other
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20 Nov 2025, Stefan Mathis, Forum, Control external process from inside MIDAS
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Thanks a lot,
Nick. Regarding the messages: Zaher showed me that it is possible to simply place a custom log file generated by the systemd next to midas.log - then it |
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20 Nov 2025, Nick Hastings, Forum, Control external process from inside MIDAS
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Hi,
> Nick. Regarding the messages: Zaher showed me that it is possible to simply place
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20 Nov 2025, Stefan Mathis, Forum, Control external process from inside MIDAS
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Hi,
unfortunately I don't have a documentation link to the feature, I just know that it works on my machine ;-) The general idea is that you place a custom |
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22 Sep 2025, Konstantin Olchanski, Info, switch midas to c++17
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Following discussions at the MIDAS workshop, we propose to move MIDAS from c++11 to c++17. There is
many new features and we want to start using some of them.
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23 Sep 2025, Pavel Murat, Info, switch midas to c++17
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perhaps c++20? - std::format is an immediately useful feature. --regards, Pasha
> Following discussions at the MIDAS workshop, we propose to move MIDAS from c++11 to c++17. There is
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23 Sep 2025, Konstantin Olchanski, Info, switch midas to c++17
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> perhaps c++20? - std::format is an immediately useful feature. --regards, Pasha
confirmed. std::format is an improvement over K&R C printf().
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23 Sep 2025, Pavel Murat, Info, switch midas to c++17
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> > perhaps c++20? - std::format is an immediately useful feature. --regards, Pasha
>
> confirmed. std::format is an improvement over K&R C printf().
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06 Nov 2025, Konstantin Olchanski, Info, switch midas to c++17
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> Following discussions at the MIDAS workshop, we propose to move MIDAS from c++11 to c++17.
There were no objections to this move.
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20 Nov 2025, Konstantin Olchanski, Info, switch midas to c++17
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> > Following discussions at the MIDAS workshop, we propose to move MIDAS from c++11 to c++17.
> We shall move forward with this change.
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20 Nov 2025, Nick Hastings, Info, switch midas to c++17
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> I notice the cmake does not actually pass "-std=c++17" to the c++ compiler, and on U-20, it is likely
> the default c++14 is used. cmake always does the wrong thing and this will need to be fixed later.
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22 Sep 2025, Konstantin Olchanski, Info, removal of ROOT support in mlogger
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Historically, building MIDAS with ROOT caused us many problems - build failures because of c++ version
mismatch, CFLAGS mismatch; run-time failures because of ROOT library mismatches; etc, etc.
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06 Nov 2025, Konstantin Olchanski, Info, removal of ROOT support in mlogger
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> we should finally bite the bullet and remove ROOT support from MIDAS ...
there were no objections to removing ROOT support from mlogger.
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20 Nov 2025, Konstantin Olchanski, Info, removal of ROOT support in mlogger
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> > we should finally bite the bullet and remove ROOT support from MIDAS ...
as discussed, HAVE_ROOT and OBSOLETE were removed from mlogger. rmana and ROOT support in manalyzed remain,
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20 Nov 2025, Konstantin Olchanski, Bug Fix, ODB update, branch feature/db_delete_key merged into develop
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In the darkside vertical slice midas daq, we observed odb corruption which I
traced to db_delete_key(). cause of corruption is not important. important is to
have a robust odb where small corruption will stay localized and will not
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05 May 2025, Konstantin Olchanski, Info, db_delete_key(TRUE)
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I was working on an odb corruption crash inside db_delete_key() and I noticed
that I did not test db_delete_key() with follow_links set to TRUE. Then I noticed
that nobody nowhere seems to use db_delete_key() with follow_links set to TRUE.
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05 May 2025, Stefan Ritt, Info, db_delete_key(TRUE)
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I would handle this actually like symbolic links are handled under linux. If you delete a symbolic link, the link gets
detected and NOT the file the link is pointing to.
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10 Nov 2025, Konstantin Olchanski, Info, db_delete_key(TRUE)
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> I would handle this actually like symbolic links are handled under linux. If you delete a symbolic link, the link gets
> detected and NOT the file the link is pointing to.
>
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20 Nov 2025, Konstantin Olchanski, Info, db_delete_key(TRUE)
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> > I would handle this actually like symbolic links are handled under linux. If you delete a symbolic link, the link gets
> > detected and NOT the file the link is pointing to.
> >
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18 Nov 2025, Lars Martin, Bug Report, TMFeEquipment fEqConfReadOn not written to ODB
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I'm constructing a TMFeEquipment with this constructor:
MagnetFe(const char *eqname, const char *eqfilename) // ctor
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06 Nov 2025, Konstantin Olchanski, Bug Report, broken scroll on midas web pages
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midas web pages that use overlays (dlgPanel, etc) are currently broken - if
overlay does not fit in the visible window, it's bottom is truncated and control
buttons like "create" and "cancel" are not visible, not clickable, page does not
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13 Nov 2025, Stefan Ritt, Bug Report, broken scroll on midas web pages
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I confirm the problem is there (at least under MacOSX Safari) and I will take care of it.
Stefan |
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14 Nov 2025, Stefan Ritt, Bug Report, broken scroll on midas web pages
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This problem was introduced by ZS in March 2023 with these commits:
https://bitbucket.org/tmidas/midas/commits/25b13f875ff1f7e2f4e987273c81d6356dd2ff53
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16 Nov 2025, Zaher Salman, Bug Report, broken scroll on midas web pages
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Sorry about that. I could not figure out what was the reason for doing this. This was during the time I was working on the file_picker. I removed these
lines and see no effect on the file_picker. I'll continue checking it affect anything else.
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17 Nov 2025, Konstantin Olchanski, Bug Report, broken scroll on midas web pages
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> Sorry about that. I could not figure out what was the reason for doing this. This was during the time I was working on the file_picker. I removed these
lines and see no effect on the file_picker. I'll continue checking it affect anything else.
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27 Oct 2025, Giovanni Mazzitelli, Suggestion, Python sc_frontend.py Display and History variables
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We would like to write an sc_frontend in Python instead of C++. All our drivers
work correctly, as well as the creation of the database in the ODB, including the
creation of Commons, Statistics, Variables, and Settings.
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13 Nov 2025, Stefan Ritt, Suggestion, Python sc_frontend.py Display and History variables
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> We would like to write an sc_frontend in Python instead of C++. All our drivers
> work correctly, as well as the creation of the database in the ODB, including the
> creation of Commons, Statistics, Variables, and Settings.
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13 Nov 2025, Ben Smith, Suggestion, Python sc_frontend.py Display and History variables
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> > We would like to write an sc_frontend in Python instead of C++. All our drivers
> > work correctly, as well as the creation of the database in the ODB, including the
> > creation of Commons, Statistics, Variables, and Settings.
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19 May 2025, Jonas A. Krieger, Suggestion, manalyzer root output file with custom filename including run number
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Hi all,
Would it be possible to extend manalyzer to support custom .root file names that include the run number?
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12 Nov 2025, Jonas A. Krieger, Suggestion, manalyzer root output file with custom filename including run number
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Hi all,
Could you please get back to me about whether something like my earlier suggestion might be considered, or if I should set up some workaround to rename |
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01 Oct 2025, Frederik Wauters, Forum, struct size mismatch of alarms
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So I started our DAQ with an updated midas, after ca. 6 months+.
No issues except all FEs complaining about the Alarm ODB structure.
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01 Oct 2025, Nick Hastings, Forum, struct size mismatch of alarms
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> So I started our DAQ with an updated midas, after ca. 6 months+.
Would be worthwhile mentioning the git commit hash or tag you are using.
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01 Oct 2025, Nick Hastings, Forum, struct size mismatch of alarms
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Just to be clear, it seems that your "EPICS Frontend" was either not recompiled against the new midas yet or the old binary is being run, but "SC Frontend"
is using the new midas.
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02 Oct 2025, Stefan Ritt, Forum, struct size mismatch of alarms
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Sorry to intervene there, but the FEs are usually compiled against libmidas.a . Therefore you have to compile midas, usually do a "make install" to update
the libmidas.a/so, then recompile the FEs. You probably forgot the "make install".
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02 Oct 2025, Frederik Wauters, Forum, struct size mismatch of alarms
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> Sorry to intervene there, but the FEs are usually compiled against libmidas.a . Therefore you have to compile midas, usually do a "make install" to update
the libmidas.a/so, then recompile the FEs. You probably forgot the "make install".
>
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17 Sep 2025, Mark Grimes, Suggestion, Get manalyzer to configure midas::odb when running offline
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Hi,
Lots of users like the midas::odb interface for reading from the ODB in manalyzers. It currently doesn't
work offline however without a few manual lines to tell midas::odb to read from the ODB copy in the run
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17 Sep 2025, Konstantin Olchanski, Suggestion, Get manalyzer to configure midas::odb when running offline
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> Lots of users like the midas::odb interface for reading from the ODB in manalyzers.
> +#include "odbxx.h"
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18 Sep 2025, Mark Grimes, Suggestion, Get manalyzer to configure midas::odb when running offline
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> ....Before commit of this patch, can you confirm the RunInfo destructor
> deletes this ODB stuff from odbxx? manalyzer takes object life times very seriously.
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18 Sep 2025, Stefan Ritt, Suggestion, Get manalyzer to configure midas::odb when running offline
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> > Of course with this patch extending manalyzer to process two or more runs at the same time becomes impossible.
>
> Yes, I hadn't realised that was an option. For that to work I guess the aforementioned static members could be made thread local storage, and
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22 Sep 2025, Stefan Ritt, Suggestion, Get manalyzer to configure midas::odb when running offline
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I will work today on the odbxx API to make sure there are no memory leaks when you switch form one file to another. I talked to KO so he agreed that yo
then commit your proposed change of manalyzer
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22 Sep 2025, Konstantin Olchanski, Suggestion, Get manalyzer to configure midas::odb when running offline
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> I will work today on the odbxx API to make sure there are no memory leaks when you switch form one file to another. I talked to KO so he agreed that yo
then commit your proposed change of manalyzer
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22 Sep 2025, Stefan Ritt, Suggestion, Get manalyzer to configure midas::odb when running offline
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> > I will work today on the odbxx API to make sure there are no memory leaks when you switch form one file to another. I talked to KO so he agreed that
yo then commit your proposed change of manalyzer
>
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26 Sep 2025, Mark Grimes, Suggestion, Get manalyzer to configure midas::odb when running offline
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> ...I talked to KO so he agreed that yo then commit your proposed change of manalyzer
Merged and pushed.
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22 Sep 2025, Konstantin Olchanski, Suggestion, Get manalyzer to configure midas::odb when running offline
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> > ....Before commit of this patch, can you confirm the RunInfo destructor
> > deletes this ODB stuff from odbxx? manalyzer takes object life times very seriously.
>
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22 Sep 2025, Stefan Ritt, Suggestion, Get manalyzer to configure midas::odb when running offline
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> > > Of course with this patch extending manalyzer to process two or more runs at the same time becomes impossible.
> > Yes, I hadn't realised that was an option.
>
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22 Sep 2025, Konstantin Olchanski, Info, obsolete mana.c removal
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Following discussions at the MIDAS workshop and the proposed removal of support for ROOT, the very obsolete mana.c
analyzer framework has reached the end of the line.
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23 Sep 2025, Andreas Suter, Info, obsolete mana.c removal
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Hi,
at the LEM Experiment at PSI, we still use mana.c and would like to keep it until end of 2026, where we will enter a long shutdown.
There we will switch to the manalyzer. Before that, there is simply no time for the change over. One thing I already noticed is the "lack" of documentation, |
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23 Sep 2025, Konstantin Olchanski, Info, obsolete mana.c removal
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> Hi, at the LEM Experiment at PSI, we still use mana.c and would like to keep it until end of 2026, where we will enter a long shutdown.
Excellent, good to hear from you! Once we remove ROOT support rmana.o will be gone, only mana.o (no ROOT) will remain. Will this break your builds?
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24 Sep 2025, Andreas Suter, Info, obsolete mana.c removal
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Sorry,
I have had now the time to dig deeper in our code and realized that we actually use rmana, i.e. WITH ROOT. If there is an easy way to incorporate the necessary |
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24 Sep 2025, Thomas Lindner, Suggestion, Improve process for adding new variables that can be shown in history plots
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Documenting a discussion I had with Konstantin a while ago.
One aspect of the MIDAS history plotting I find frustrating is the sequence for adding a new history
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23 Sep 2025, Konstantin Olchanski, Info, long history variable names
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To record discussion with Stefan about long history variable names.
We have several requests to remove the 32-byte limit on history variable names.
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23 Sep 2025, Konstantin Olchanski, Info, 64-bit time_t
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To record discussion with Stefan regarding 64-bit time_t
To remember:
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07 Feb 2025, Konstantin Olchanski, Info, switch midas to next c++
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to continue where we left off in 2019,
https://daq00.triumf.ca/elog-midas/Midas/1520
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20 Mar 2025, Konstantin Olchanski, Info, switch midas to next c++
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> time to choose the next c++!
Ununtu-24.04, MIDAS builds with -std=c++23 without errors or any additional warnings. (but does it work? "make
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22 Sep 2025, Konstantin Olchanski, Info, switch midas to next c++
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As part of discussions with Stefan during the MIDAS workshop,
an update to supported versions of c++ on different platforms.
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16 Apr 2025, Thomas Lindner, Info, MIDAS workshop (online) Sept 22-23, 2025
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Dear MIDAS enthusiasts,
We are planning a fifth MIDAS workshop, following on from previous successful
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03 Jun 2025, Thomas Lindner, Info, MIDAS workshop (online) Sept 22-23, 2025
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Dear all,
We have setup an indico page for the MIDAS workshop on Sept 22-23. The page is here
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08 Sep 2025, Thomas Lindner, Info, MIDAS workshop (online) Sept 22-23, 2025
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Dear all,
A reminder we will have our MIDAS workshop starting two weeks from today (Sept 22-23). The
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18 Sep 2025, Thomas Lindner, Info, MIDAS workshop (online) Sept 22-23, 2025
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Dear all,
A final reminder that the MIDAS workshop will be occurring next Monday and Tuesday (at least in Europe
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22 Sep 2025, Thomas Lindner, Info, MIDAS workshop (online) Sept 22-23, 2025
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Dear all,
The original zoom link on the indico page was not correct. We have created a new zoom link and updated the
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17 Sep 2025, Mark Grimes, Bug Report, Midas no longer compiles on macOS
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Hi,
The current develop branch no longer compiles on macOS. I get lots of errors of the form
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17 Sep 2025, Konstantin Olchanski, Bug Report, Midas no longer compiles on macOS
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> The current develop branch no longer compiles on macOS. I get lots of errors of the form
> /Users/me/midas/src/history_schema.cxx:740:4: error: unknown type name 'off64_t' ...
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