 22 Jul 2013, Konstantin Olchanski, Info, MIDAS source code converted from SVN to GIT
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The MIDAS source code repository was converted from SVN to GIT, hosted as bitbucket:
https://bitbucket.org/tmidas.
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 22 Jul 2013, Stefan Ritt, Info, MIDAS source code converted from SVN to GIT
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Konstantin forgot to tell people outside of TRIUMF how to get the newest version of MIDAS. Here it is:
$ git clone https://bitbucket.org/tmidas/midas.git
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24 Jul 2013, Konstantin Olchanski, Info, MidasWiki at TRIUMF
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> We are happy to announce the creation of the MidasWiki at TRIUMF
> https://midas.triumf.ca
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21 Aug 2013, Konstantin Olchanski, Info, Documentation for ODBGet() & co, Javascript and AJAX functions.
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The bulk of the MIDAS AJAX and Javascript functions is now documented on the MIDAS Wiki:
https://midas.triumf.ca/MidasWiki/index.php/Mhttpd.js
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22 Aug 2013, Konstantin Olchanski, Info, Documentation for ODBGet() & co, Javascript and AJAX functions.
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> The bulk of the MIDAS AJAX and Javascript functions is now documented on the MIDAS Wiki:
>
> https://midas.triumf.ca/MidasWiki/index.php/Mhttpd.js
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14 Sep 2013, Konstantin Olchanski, Info, mktime() and daylight savings time
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I would like to share with you a silly problem with mktime() and daylight savings time (Summer
time/Winter time) that I have run into while working on the mhttpd history query page.
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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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24 Sep 2013, Stefan Ritt, Info, mktime() and daylight savings time
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I vaguely remember that I had a similar problem with ELOG. The solution was to call tzset() at the beginning of the program. The man page says that
this function is called automatically by programs using time zones, but apparently it is not. Can you try that? There is also the TZ environment
variable and /etc/localtime. I never understood the details, but playing with these things can influence mktime() and localtime().
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24 Sep 2013, Konstantin Olchanski, Info, mktime() and daylight savings time
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> I vaguely remember that I had a similar problem with ELOG. The solution was to call tzset() at the beginning of the program. The man page says that
> this function is called automatically by programs using time zones, but apparently it is not. Can you try that? There is also the TZ environment
> variable and /etc/localtime. I never understood the details, but playing with these things can influence mktime() and localtime().
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24 Sep 2013, Stefan Ritt, Info, mktime() and daylight savings time
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> > I vaguely remember that I had a similar problem with ELOG. The solution was to call tzset() at the beginning of the program. The man page says that
> > this function is called automatically by programs using time zones, but apparently it is not. Can you try that? There is also the TZ environment
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24 Sep 2013, Stefan Ritt, Info, mktime() and daylight savings time
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> > > I vaguely remember that I had a similar problem with ELOG. The solution was to call tzset() at the beginning of the program. The man page says that
> > > this function is called automatically by programs using time zones, but apparently it is not. Can you try that? There is also the TZ environment |
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25 Sep 2013, Konstantin Olchanski, Info, Documentation for ODBGet() & co, Javascript and AJAX functions.
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> > The bulk of the MIDAS AJAX and Javascript functions is now documented on the MIDAS Wiki:
> >
> > https://midas.triumf.ca/MidasWiki/index.php/Mhttpd.js
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27 Sep 2013, Konstantin Olchanski, Info, ODB JSON support
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> odbedit can now save ODB in JSON-formatted files.
>
> JSON encoding implementation follows specifications at:
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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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09 Oct 2013, Konstantin Olchanski, Info, ODB JSON support
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> > odbedit can now save ODB in JSON-formatted files.
> A bug was reported in my JSON ODB encoder: NaN values are not encoded correctly.
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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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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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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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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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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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