 10 Jun 2019, Konstantin Olchanski, Info, status of self-signed https certificates
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> > > In the mean time, we continue to recommend that mhttpd should be used behind a password protected https proxy (i.e. apache
> > > httpd, etc).
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10 Jun 2019, Konstantin Olchanski, Release, bin and lib symlinks, mxml-2019-03-a, midas-2019-03-h
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> > > > the midas release 2019-03 is ready for general use.
The latest version of MIDAS puts libraries and executables in $MIDASSYS/lib and bin (the "linux" part of pathname is removed).
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17 Jun 2019, Konstantin Olchanski, Forum, Strange JS array creation
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> db_create_key(hDB, 0, "Equipment/Switching/Variables/DATA_WRITE", TID_INT);
you can also do this from javascript, too, using the db_create rpc call, see mjsonrpc_db_create() and
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 17 Jun 2019, Konstantin Olchanski, Bug Fix, removed modbset() from mhttpd.js
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The modbset() function in mhttpd.js is not used anywhere in midas and it misleads midas users into thinking that it works like the old ODBSet() function,
when
it can not and it does not.
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17 Jun 2019, Konstantin Olchanski, Release, bin and lib symlinks, mxml-2019-03-a, midas-2019-03-h
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>
> If i'm not mistaken the proper commands are
>
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17 Jun 2019, Konstantin Olchanski, Info, MIDAS switching to Cmake
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> Status update on the cmake conversion:
It looks like cmake cannot do several things we need for building midas.
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17 Jun 2019, Konstantin Olchanski, Bug Fix, removed modbset() from mhttpd.js
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If it's a function intended for general use, it should be in midas.js.
The documentation for such a function should be made very clear that:
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17 Jun 2019, Konstantin Olchanski, Bug Fix, restored modbset() in midas.js
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> The modbset() function is used in many custom pages at PSI ...
I restored this function in midas.js with a documentation blurb warning about it's asynchronous nature and about the possibility of out-of-order writes.
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17 Jun 2019, Konstantin Olchanski, Info, MIDAS switching to Cmake
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> > Status update on the cmake conversion:
After the latest updates from Stefan & co, it looks like the cmake builds are working correctly,
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18 Jun 2019, Konstantin Olchanski, Bug Fix, removed modbset() from mhttpd.js
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> A ladder of promise event handlers is certainly one possibility to enforce the order of ODB writes, but I wonder if we could so something simpler:
>
> - modbset creates an object remembering the status of the RPC request. Initially, this object receives the status "open request"
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18 Jun 2019, Konstantin Olchanski, Info, MIDAS switching to Cmake
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> target_compile_options(rmlogger PRIVATE -DHAVE_ROOT)
Got it. Now I can build the duplets of mana.o and rmana.o (and .a) - mana always without ROOT, rmana with ROOT if available. This is the same as
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18 Jun 2019, Konstantin Olchanski, Bug Fix, removed modbset() from mhttpd.js
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> Just to make this point clear: The "write-to-odb-read-via-hotlink" was never meant to guarantee the receiving side to see each change. If changes happen
too often, updates might get lost. If one relies on the
> sequence of updates, one should use direct RPC calls to the frontend or use a midas buffer and encode updates in events.
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19 Jun 2019, Konstantin Olchanski, Release, midas-2019-06 with cmake and c++
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We are happy to the midas release "midas-2019-06" with the build system implemented in cmake and the midas, mxml and mscb
projects switched to C++.
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25 Jun 2019, Konstantin Olchanski, Bug Report, ERROR INSTALLING 32BIT MIDAS LIBRARIES ON 64BIT HOST MACHINE
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Yikes, the error is in the CRC library. The assembly-optimized crc32c function fails to build, and the
error does not look familiar to me. I do not see this error here. What is your host system ("uname -
a") and what is your gcc ("gcc -v")?
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25 Jun 2019, Konstantin Olchanski, Forum, Strange JS array creation
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> --> In the midas back-end I never created an array. I created an INT in the ODB with db_create_key(hDB, 0,
> "Equipment/Switching/Variables/DATA_WRITE", TID_INT). By using modset in javascript and parsing the string
> "/Equipment/Switching/Variables/DATA_WRITE[" + String(i) + "]" I call it like an array and it shows up like an
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26 Jun 2019, Konstantin Olchanski, Forum, Problem transferring fetest data from the remote frontend to the backend
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> Hi again, we now have Midas installed on the Rpi (remote frontend machine) and
> have managed to run Fetest on it. Now we are at a stage where we want to send
> the Fetest data over to the Data Acquisition machine ...
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27 Jun 2019, Konstantin Olchanski, Bug Report, Getting an error when trying to compile a frontend file
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If the latest midas does not work, try the previous release versions. "git tags" and "git branch -
a" will show you what exists. Look for branch and tag names in the form "midas-YYYY-MM".
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27 Jun 2019, Konstantin Olchanski, Bug Report, make linux32 bombs on el7 in crc32c.c, ERROR INSTALLING 32BIT MIDAS LIBRARIES ON 64BIT HOST MACHINE
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Reproduced on el7 (CentOS7). Same thing works on el6 (SL6).
The error is in the SSE4.2-assembly-accelerated library for computing crc32c checksums. I do
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28 Jun 2019, Konstantin Olchanski, Bug Report, make linux32 bombs on el7 in crc32c.c, ERROR INSTALLING 32BIT MIDAS LIBRARIES ON 64BIT HOST MACHINE
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> Reproduced on el7 (CentOS7). Same thing works on el6 (SL6).
Fixed in commit dd937e6. Only enable SSE4.2 crc32c for 64-bit compilation. Still not sure why it worked for 32-bit
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28 Jun 2019, Konstantin Olchanski, Bug Report, Status page reloads every second
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> We observed a strange behavior, from our point of view:
> ... the Midas status page started to reload/refresh every second
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