 15 Jul 2004, Stefan Ritt, , Severe bug in 1.9.4
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Hello midas'ers,
Today I discovered a severe bug in the routine bm_check_buffers(), which
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 21 Jul 2004, Stefan Ritt, , Introduction of environment variable MIDASSYS
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> Where should MIDAS be installed?
I personally don't have any preference, as long as it's in accordance with "the standard"
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07 Sep 2004, Stefan Ritt, , mlogger crash if using mserver.
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I trapped myself into that problem recently so it's the right time to fix it (;-).
We have two options:
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16 Sep 2004, Stefan Ritt, , midas odb locking
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> I will add a timeout of 10 minutes, then shutdown the ODB client with an error message.
I added a timeout handling to db_lock_database. It was already present in
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21 Sep 2004, Stefan Ritt, , ODB-EPICS gateway
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The easiest way to achieve this is to write a new class driver, probably derived
from the multi.c class driver. One has just to rename all "output" with "write"
(or better "ODB2EPICS") and all "input" with "EPICS2ODB". The multi class driver
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29 Sep 2004, Stefan Ritt, Info, Increased number of clients in midas.h, important!
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Due to some request several limitations like the maximal number of clients to the ODB have
been increased in midas.h and committed to CVS. It is important to note that clients compiled
with the old limits cannot coexist with clients compiled with the new limits. You will get
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03 Oct 2004, Stefan Ritt, Info, Introduction of new transition scheme
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A new transition scheme has been implemented and committed. Previously, one had the
possibility to register for PRE/POST transitions, which was necessary in order to first
stop the frontends, then stop the logger to close the data file. While this scheme
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03 Oct 2004, Stefan Ritt, Info, Increased number of clients in midas.h, important!
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> Stefan, to avoid confusion from crashes caused by incompatible ODBs would it be possible to add a "version number" to ODB,
together with a check and an error message
> saying "oops... incompatible ODB, please rebuild your programs"? We tend to have different versions of midas floating around and
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04 Oct 2004, Stefan Ritt, Info, Increased number of clients in midas.h, important!
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> Right. We cannot fix the past, but we should fix the future. BTW, "do not mix versions" is hard to enforce and mismatches did, do and
> will happen
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13 Oct 2004, Stefan Ritt, Bug Report, db_paste: found string exceeding MAX_STRING_LENGTH
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Can you attach
/twist/data_onl/current/run17548.odb
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13 Oct 2004, Stefan Ritt, Bug Report, silly odbedit "rename Display xxx/yyy"
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> odbedit command "rename Display xxx/yyy" creates a key named "xxx/yyy" (yes,
> with a slash in the name) and this key cannot be deleted or renamed...
> K.O.
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13 Oct 2004, Stefan Ritt, Suggestion, No al_clear_alarm()?
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> We have al_trigger_alarm(), but no matching al_clear_alarm(), and I need it to
> clear my alarm once the alarm condition no longer exists. Any objections if I
> add this function? K.O.
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14 Oct 2004, Stefan Ritt, Bug Report, TWIST upgrade bombed...
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Agree.
Once you did the modification, please check following situation: Create a fresh
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04 Nov 2004, Stefan Ritt, Forum, Frontend code and the ODB
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Hi Jan,
I usually keep under /Experiment/Run Parameters only those settings which are kind of "global" and thus of
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15 Dec 2004, Stefan Ritt, Info, Commit local TWIST modifications
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> - system.c: do not chdir("/") in ss_daemon_init()- it prevents us from ever
> getting core dumps from midas daemons. The old behaviour is trivially
> restored by "cd /" before starting the daemon; or by "limit coredumpsize 0".
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15 Dec 2004, Stefan Ritt, Forum, Frontend index
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> What is the api call to determine the index of the frontend when specifying the
> -i parameter during execution of the frontend?
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22 Dec 2004, Stefan Ritt, Forum, cm_msg
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> Could someone please explain to me how cm_msg, cm_msg1, etc. all work. The
> documentation is very terse.
>
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22 Dec 2004, Stefan Ritt, Suggestion, What to do with invalid data in the history system?
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Dealing with the NaN's in the history system in the past week, a question came
up at PSI about how to deal with invalid history data.
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23 Dec 2004, Stefan Ritt, Suggestion, What to do with invalid data in the history system? 
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I preliminary implemented NaNs into the history system. It works such that if a
device driver returns a read error status, the class driver writes a NaN
(Not-a-Number) into the corresponding variable via the new function ss_nan(). The
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21 Jan 2005, Stefan Ritt, Bug Report, Persistency problem with h1_book() & co
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> I can't get onto cvs@midas.psi.ch right now
> (cvs update
> cvs@midas.psi.ch's password:
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