 02 Mar 2021, Konstantin Olchanski, Info, shortest possible sleep
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since I am implementing a polled equipment, I was curious what is the smallest possible sleep time on current computers.
in current UNIX, there are 2 system calls available for sleeping: select() (with microsecond granularity) and nanosleep() (with nanosecond granularity).
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 02 Mar 2021, Stefan Ritt, Info, shortest possible sleep
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Why do you need that? Periodic equipment typically runs ever ten seconds or so, meaning one can do this easily in a scheduler.
For polled equipment, you don't want to sleep at all. Because if you sleep, you might miss an event. That's why I put my poll in mfe.c into a for() loop. |
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03 Mar 2021, Konstantin Olchanski, Info, shortest possible sleep
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> Why do you need that?
UNIX/POSIX advertises functions for sleeping in microseconds and nanoseconds,
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30 Mar 2021, Konstantin Olchanski, Info, INT64/UINT64/QWORD not permitted in ODB and history... Change of TID_xxx data types
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> We have to request of a 64-bit integer data type to be included in MIDAS banks.
> Since 64-bit integers are on some systems "long" and on other systems "long long",
> I decided to create the two new data types
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04 Apr 2021, Konstantin Olchanski, Info, bk_init32a data format
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In April 4th 2020 Stefan added a new data format that fixes the well known problem with alternating banks being
misaligned against 64-bit addresses. (cannot find announcement on this forum. midas commit
https://bitbucket.org/tmidas/midas/commits/541732ea265edba63f18367c7c9b8c02abbfc96e)
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04 Apr 2021, Konstantin Olchanski, Info, Change of TID_xxx data types
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>
> To be consistent, I renamed the old types:
>
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05 Apr 2021, Konstantin Olchanski, Info, blog - convert mfe frontend to tmfe c++ framework
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notes from converting ALPHA-g chronobox frontend fechrono to tmfe c++ framework.
the chronobox device is a timestamp/low resolution tdc/scaler/generic TTL and ECL io
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05 Apr 2021, Konstantin Olchanski, Info, blog - convert mfe frontend to tmfe c++ framework
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Result is here:
https://bitbucket.org/expalpha/chronobox_software/src/master/fechrono_tmfe.cxx
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13 Apr 2021, Konstantin Olchanski, Info, bk_init32a data format
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Until commit a4043ceacdf241a2a98aeca5edf40613a6c0f575 today, mdump mostly did not work with bank32a data.
K.O.
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14 Apr 2021, Stefan Ritt, Info, INT64/UINT64/QWORD not permitted in ODB and history... Change of TID_xxx data types
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> These 64-bit data types do not work with ODB and they do not work with the MIDAS history.
They were never meant to work with the history. They were primarily implemented to put large 64-
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06 May 2021, Ben Smith, Info, New feature in odbxx that works like db_check_record()
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For those unfamiliar, odbxx is the interface that looks like a C++ map, but automatically syncs with the ODB - https://midas.triumf.ca/MidasWiki/index.php/Odbxx.
I've added a new feature that is similar to the existing odb::connect() function, but works like the old db_check_record(). The new odb::connect_and_fix_structure() |
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19 May 2021, Konstantin Olchanski, Info, update of event buffer code
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a big update to the event buffer code was merged today.
two important bug fixes:
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26 May 2021, Marco Chiappini, Info, label ordering in history plot
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Dear all,
is there any way to order the labels in the history plot legend? In the old
system there was the “order” column in the config panel, but I can not find it
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27 May 2021, Joseph McKenna, Info, MIDAS Messenger - A program to send MIDAS messages to Discord, Slack and or Mattermost
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I have created a simple program that parses the message buffer in MIDAS and
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28 May 2021, Joseph McKenna, Info, MIDAS Messenger - A program to forward MIDAS messages to Discord, Slack and or Mattermost merged
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A simple program to forward MIDAS messages to Discord, Slack and or Mattermost
(Python 3 required)
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28 May 2021, Konstantin Olchanski, Info, MidasConfig.cmake usage
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How does "find_package (Midas REQUIRED)" find the location of MIDAS?
The best I can tell from the current code, the package config files are installed
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28 May 2021, Marius Koeppel, Info, MidasConfig.cmake usage
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> Does anybody actually use "find_package(midas)", does it actually work for anybody?
What we do is to include midas as a submodule and than we call find_package:
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28 May 2021, Konstantin Olchanski, Info, MidasConfig.cmake usage
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> > Does anybody actually use "find_package(midas)", does it actually work for anybody?
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> What we do is to include midas as a submodule and than we call find_package:
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31 May 2021, Stefan Ritt, Info, MidasConfig.cmake usage
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MidasConfig.cmake might at some point get included in the standard Cmake installation (or some add-on). It will then reside in the Cmake system path
and you don't have to explicitly know where this is. Just the find_package(Midas) will then be enough.
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02 Jun 2021, Konstantin Olchanski, Info, MidasConfig.cmake usage
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> MidasConfig.cmake might at some point get included in the standard Cmake installation (or some add-on). It will then reside in the Cmake system path
> and you don't have to explicitly know where this is. Just the find_package(Midas) will then be enough.
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