 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, 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, 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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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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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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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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14 Nov 2013, Konstantin Olchanski, Forum, Installation problem
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> #include "use.h"
> { USED int i=foo(); }
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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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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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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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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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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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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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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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