 23 Sep 2013, Stefan Ritt, Info, Custom page header implemented 
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Due to popular request, I implemented a custom header for mhttpd. This allows to inject some HTML code
to be shown on top of the menu bar on all mhttpd pages. One possible application is to bring back the old
status line with the name of the current experiment, the actual time and the refresh interval.
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 12 Feb 2014, Stefan Ritt, Info, Custom page header implemented
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As reported in the bug tracker, the proposed header does not work if no specific (= different from the default 60 sec.) update period is specified,
since then no cookie is present. Here is the updated code which works for all cases:
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18 Feb 2014, Konstantin Olchanski, Info, Custom page header implemented
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I am not sure what to do with the javascript snippet - I understand it should be somehow connected to /Custom/Header, but if I create the /Custom/Header
string, I cannot put this snippet
into this string using odbedit - if I try to cut&paste it into odbedit, it is truncated to the first line - nor using the mhttpd odb editor - when I cut&paste |
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19 Feb 2014, Stefan Ritt, Info, Custom page header implemented
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> I am not sure what to do with the javascript snippet
Just read elog:908, it tells you to put this into a file, name it header.html for example, and put into the ODB:
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29 Jan 2014, Konstantin Olchanski, Bug Fix, make dox
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The capability to generate doxygen documentation of MIDAS was restored.
Use "make dox" and "make cleandox",
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30 Jan 2014, Stefan Ritt, Bug Fix, make dox
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> The capability to generate doxygen documentation of MIDAS was restored.
>
> Use "make dox" and "make cleandox",
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18 Feb 2014, Konstantin Olchanski, Bug Fix, make dox
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> > The capability to generate doxygen documentation of MIDAS was restored.
> >
> > Use "make dox" and "make cleandox",
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19 Feb 2014, Stefan Ritt, Bug Fix, make dox
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> On most Linux systems, doxygen is easy to install. Red Hat instructions are here:
> http://www.triumf.info/wiki/DAQwiki/index.php/SLinstall#Install_packages_needed_for_QUARTUS.2C_ROOT.2C_EPICS_and_MIDAS_DAQ
>
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31 Jan 2014, Stefan Ritt, Info, Separation of MSCB subtree
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Since several projects at PSI need MSCB but not MIDAS, I decided to separate the two repositories. So if you
need MIDAS with MSCB support inside mhttpd, you have to clone MIDAS, MXML and MSCB from bitbucket
(or the local clone at TRIUMF) as described in
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18 Feb 2014, Konstantin Olchanski, Info, Separation of MSCB subtree
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> Since several projects at PSI need MSCB but not MIDAS, I decided to separate the two repositories. So if you
> need MIDAS with MSCB support inside mhttpd, you have to clone MIDAS, MXML and MSCB from bitbucket
> (or the local clone at TRIUMF) as described in
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11 Feb 2014, Andreas Suter, Bug Report, mhttpd, etc.
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I found a couple of bugs in the current mhttpd, midas version: "93fa5ed"
This concerns all browser I checked (firefox, chrome, internet explorer, opera)
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11 Feb 2014, Stefan Ritt, Bug Report, mhttpd, etc.
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[quote="Andreas Suter"]I found a couple of bugs in the current mhttpd, midas version: "93fa5ed"[/quote]
See my reply on the issue tracker:
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15 Jan 2014, Konstantin Olchanski, Bug Report, MIDAS password protection is broken
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If you follow the MIDAS documentation for setting up password protection, you will get strange messages:
ladd00:midas$ ./linux/bin/odbedit
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15 Jan 2014, Konstantin Olchanski, Bug Report, MIDAS password protection is broken
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> I through to improve this by fixing a bug in cm_msg_log() (where the messages are coming from)
The periodic messages about broken semaphore actually come from al_check(). I put some whining there, too.
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05 Feb 2014, Stefan Ritt, Bug Report, MIDAS password protection is broken
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> If you follow the MIDAS documentation for setting up password protection, you will get strange messages:
This is interesting. When I used it last time (some years ago...) it worked fine. I did not touch this, and now it's broken. Must be related to some modifications |
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15 Jan 2014, Konstantin Olchanski, Bug Report, MIDAS Web password broken
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The MIDAS Web password function is broken - with the web password enabled, I am not prompted for a
password when editing ODB. The password still partially works - I am prompted for the web password
when starting a run. K.O.
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05 Feb 2014, Stefan Ritt, Bug Report, MIDAS Web password broken
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> The MIDAS Web password function is broken - with the web password enabled, I am not prompted for a
> password when editing ODB. The password still partially works - I am prompted for the web password
> when starting a run. K.O.
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16 Jan 2014, Konstantin Olchanski, Info, MIDAS and "international characters", UTF-8 and Unicode.
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I made some tests of MIDAS support for "international characters" and we seem to be in a reasonable
shape.
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15 Jan 2014, Konstantin Olchanski, Bug Fix, Fixed spurious symlinks to midas.log
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In some experiments (i.e. DEAP), we see spurious symlinks to midas.log scattered just about everywhere. I
now traced this to an uninitialized variable in cm_msg_log() and it should be fixed now. K.O. |
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17 Dec 2013, Stefan Ritt, Info, IEEE Real Time 2014 Call for Abstracts
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Hello,
I'm co-organizing the upcoming Real Time Conference, which covers also the field of data acquisition, so it might be interesting for people working
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16 Dec 2013, Konstantin Olchanski, Bug Fix, Abolished SYNC and ASYNC defines
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A few months ago, definitions of SYNC and ASYNC in midas.h have been changed away from "0" and "1",
and this caused problems with some event buffer management functions bm_xxx().
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16 Dec 2013, Konstantin Olchanski, Info, MIDAS on ARM
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I added MIDAS Makefile rules for building ARM binaries: "make linuxarm" and "make cleanarm" will create
(and clean) object files, libraries and executables under "linux-arm" using the TI Sitara ARM SDK or the
Yocto SDK ARM cross-compilers (GCC 4.7.x and 4.8.x respectively). (Makefile rules for building PPC
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28 Nov 2013, Konstantin Olchanski, Info, Audit of fixed size arrays
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In one of the experiments, we hit a long time bug in mdump - there was an array of 32 equipments and if
there were more than 32 entries under /equipment, it would overrun and corrupt memory. Somehow this
only showed up after mdump was switched to c++. The solution was to use std::vector instead of fixed
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20 Nov 2013, Konstantin Olchanski, Bug Report, Too many bm_flush_cache() in mfe.c
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I was looking at something in the mserver and noticed that for remote frontends, for every periodic event,
there are about 3 RPC calls to bm_flush_cache().
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21 Nov 2013, Stefan Ritt, Bug Report, Too many bm_flush_cache() in mfe.c
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> And I think that works just fine for frontends directly connected to the shared memory, one call to
> bm_flush_buffer() should be sufficient.
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15 Nov 2013, Konstantin Olchanski, Bug Report, stuck data buffers
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We have seen several times a problem with stuck data buffers. The symptoms are very confusing -
frontends cannot start, instead hang forever in a state very hard to kill. Also "mdump -s -d -z
BUF03" for the affected data buffers is stuck.
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14 Nov 2013, Konstantin Olchanski, Bug Report, MacOS10.9 strlcpy() problem
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On MacOS 10.9 MIDAS will crashes in strlcpy() somewhere inside odb.c. We think this is because strlcpy()
in MacOS 10.9 was changed to abort() if input and output strings overlap. For overlapping memory one is
supposed to use memmove(). This is fixed in current midas, for older versions, you can try this patch:
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09 Nov 2013, Razvan Stefan Gornea, Forum, Installation problem
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Hi,
I run into problems while trying to install Midas on Slackware 14.0. In the past
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10 Nov 2013, Stefan Ritt, Forum, Installation problem
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Seems to me a problem with the ODBC library, so maybe Konstantin can comment.
/Stefan |
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11 Nov 2013, Konstantin Olchanski, Forum, Installation problem
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> I run into problems while trying to install Midas on Slackware 14.0.
Thank you for reporting this. We do not have any slackware computers so we cannot see these message usually.
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11 Nov 2013, Konstantin Olchanski, Forum, Installation problem
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> > I run into problems while trying to install Midas on Slackware 14.0.
>
> b) an actual error in fal.c:
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13 Nov 2013, Konstantin Olchanski, Forum, Installation problem
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> > I run into problems while trying to install Midas on Slackware 14.0.
>
> Thank you for reporting this. We do not have any slackware computers so we cannot see these message usually.
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13 Nov 2013, Stefan Ritt, Forum, Installation problem
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> got around to look at compile messages on ubuntu: in addition to "variable 'error' set but not used" we have these:
>
> warning: ignoring return value of 'ssize_t write(int, const void*, size_t)'
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14 Nov 2013, Razvan Stefan Gornea, Forum, Installation problem
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Hi, Thanks a lot for the response! Yes to search packages and list their content in Slackware it is pretty similar to your illustration. Slackware seems
to use iODBC in which case it would link with -liodbc I guess.
root@lheppc83:~# slackpkg file-search sql.h |
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14 Nov 2013, Konstantin Olchanski, Forum, Installation problem
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# slackpkg file-search sql.h
[ installed ] - libiodbc-3.52.7-x86_64-2
...
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12 Nov 2013, Stefan Ritt, Forum, Installation problem
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The warnings with the set but unused variables are real. While John O'Donnell proposed:
==========
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14 Nov 2013, Konstantin Olchanski, Forum, Installation problem
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> #include "use.h"
> { USED int i=foo(); }
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22 Oct 2013, Konstantin Olchanski, Info, midas programs "auto start", etc
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MIDAS "programs" settings include: /programs/xxx/"auto start", "auto restart" and "auto stop". What do
they do?
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06 Nov 2013, Stefan Ritt, Info, midas programs "auto start", etc
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> "programs auto start" : works but has strange interactions and side effects, do not use it.
> "programs auto stop" : works, can be used to stop programs at the end of run (but what for?)
> "programs auto restart" : works, seems to work correctly, can be used to auto restart mlogger, frontends,
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25 Oct 2013, Konstantin Olchanski, Bug Fix, fixed mlogger run auto restart bug
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A problem existed in midas for some time: when recording long data sets of time (or event) limited runs
with logger run auto restart set to "yes", the runs will automatically stop and restart as expected, but
sometimes the run will stop and never restart and beam will be lost until the experiment operator on shift
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25 Oct 2013, Stefan Ritt, Bug Fix, fixed mlogger run auto restart bug
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> A problem existed in midas for some time: when recording long data sets of time (or event) limited runs
> with logger run auto restart set to "yes", the runs will automatically stop and restart as expected, but
> sometimes the run will stop and never restart and beam will be lost until the experiment operator on shift
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28 Oct 2013, Konstantin Olchanski, Bug Fix, fixed mlogger run auto restart bug
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>
> More generally I kind of consider the mlogger auto restart facility as deprecated. It works in the background and the operator does not have a clue
> what is going on. We use now the sequencer to achieve exactly the same functionality.
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28 Oct 2013, Stefan Ritt, Bug Fix, fixed mlogger run auto restart bug
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> Does the sequencer survive a crash or a restart of mhttpd?
Yes. Of course runs will not be started/stopped when mhttpd is not running, but when you restart it gracefully continues where it stopped, since all variables |
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01 Oct 2013, Konstantin Olchanski, Info, MacOS select() problem
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The following code found in mhttpd does not work on MacOS (BSD UNIX).
On Linux, the do-loop will finish after 2 seconds as expected. On MacOS (and other BSD systems), it will
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25 Oct 2013, Konstantin Olchanski, Info, MacOS select() problem
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> The following code found in mhttpd does not work on MacOS (BSD UNIX). ...
Because of this problem, on MacOS, run transitions can get stuck forever - most timeouts do not work. (Specifically, recv_string() never times out)
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22 Oct 2013, Konstantin Olchanski, Info, audit of db_get_record()
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Record-oriented ODB functions db_create_record(), db_get_record(), db_check_record() and
db_set_record() require special attention to the consistency between their "C struct"s (usually defined in
midas.h), their initialization strings (usually defined in midas.h) and the contents of ODB.
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