odb.c rev 4622 fixes ODB corruption by db_connect_database() if client_name is
too long. Also fixed is potential ODB corruption by too long key names in
db_create_key(). Problem kindly reported by Tim Nichols of T2K/ND280 experiment.
K.O.

> odb.c rev 4622 fixes ODB corruption by db_connect_database() if client_name is
> too long. Also fixed is potential ODB corruption by too long key names in
> db_create_key(). Problem kindly reported by Tim Nichols of T2K/ND280 experiment.


Related bug fix - db_connect_database() should not permit client names that contain
the slash (/) character. Names like "aaa/bbb" create entries /Programs/aaa/bbb (aaa
is a subdirectory) and names like "../aaa" create entries in the ODB root directory.

svn rev 4623.
K.O.

I encountered many warning while building MIDAS (svn r4556). Please see the
attached log file. Most of them are caused by type conversion from string to
"char*".
Though I can ignore all the warning without any problem, I still hate to see
them. :-)

> I encountered many warning while building MIDAS (svn r4556). Please see the
> attached log file. Most of them are caused by type conversion from string to
> "char*".
> Though I can ignore all the warning without any problem, I still hate to see
> them. :-)

There is no "type conversions". The compiler is whining about code like this:

/* data type names */
static char *tid_name[] = {
   "NULL",
   "BYTE",
   ...

I guess we should keep the compiler happy and make them "static const char*".

BTW, my compiler is SL5.2 gcc-4.1.2 and it does not complain. What's your compiler?

K.O.

> There is no "type conversions". The compiler is whining about code like this:
> 
> /* data type names */
> static char *tid_name[] = {
>    "NULL",
>    "BYTE",
>    ...
> 
> I guess we should keep the compiler happy and make them "static const char*".
> 
> BTW, my compiler is SL5.2 gcc-4.1.2 and it does not complain. What's your compiler?
> 
> K.O.

Using built-in specs.
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.3.4-2' --with-
bugurl=file:///usr/share/doc/gcc-4.3/README.Bugs --enable-
languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --enable-shared --enable-multiarch -
-enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-
gettext --enable-threads=posix --enable-nls --with-gxx-include-dir=/usr/include/c++/4.3 
--program-suffix=-4.3 --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc --
enable-mpfr --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --
host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.3.4 (Debian 4.3.4-2)

#define EXPCVADC_COMMON_STR(_name) char *_name[] = {\
"[.]",\
...

#define EXPCVADC_COMMON_STR(_name) const char *_name[] = {\
"[.]",\
...

char *s = "whatever";
...
strcpy(s, "Hello, this is a string longer than the initial one.");

status = db_create_record(hDB, 0, set_str, strcomb(expcvadc_settings_str));

cvadcfe.c: In function ‘frontend_init’:
cvadcfe.c:144: warning: passing argument 1 of ‘strcomb’ from incompatible pointer type

> #define EXPCVADC_COMMON_STR(_name) const char *_name[] = {\
> "[.]",\
>...

Ok, I changed that in odb.c rev. 4620, should be fine now.

I committed an updated lazylogger with updated documentation. The new version supports subruns and 
can save to external storage arbitrary files (i.e. odb dump files). It also moves most book keeping out of 
odb to permit handling more files on bigger storage disks.

Example lazylogger scripts for castor (CERN) and dcache (TRIUMF) are in the directory "utils".

The lazylogger documentation was updated to remove obsolete information and to describe the new 
functions. As usual "make dox; cd doxfiles/html; firefox index.html" or see my copy at:

http://ladd00.triumf.ca/~olchansk/midas/Utilities.html#lazylogger_task

svn rev 4615, 4616.
K.O.

Though ended with ".c", "lazylogger.c" has to be build with C++ compiler. I have 
to modify my CMakeLists.txt. 
Please see the attachment if you need it. It works with svn-r4616.

Hi,
I'm new to both Linux and Midas and having trouble installing the programme - 
the install file suggeats that I should have a directory:

midas/unix

but this doesn't appear.

Also, when running the "make" for the library (step 3 of the installation), I 
don't see the directory "zlib.a", but there is a "libz.a" and I note the 
original .tar file has no libz.a file in it. Is this a typo on the 
installation?
The terminal window at this point displays:

undefined reference to `errno'
make: ***[example] Error 1

Further help will no doubt be required as I've used windows throughout my 
research and now looking to learn how to use linux. Any help greatly 
appreciated. Thanks!

Documentation for writing midas history data to SQL (mysql) is now documented in midas doxygen files 
(make dox; firefox doxfiles/html/index.html). The corresponding logger and mhttpd code has been 
committed for some time now and it is used in production environment by the t2k/nd280 slow controls 
daq system at TRIUMF.

svn rev 4487
K.O.

> Documentation for writing midas history data to SQL (mysql) is now documented in midas doxygen files 
> (make dox; firefox doxfiles/html/index.html). The corresponding logger and mhttpd code has been 
> committed for some time now and it is used in production environment by the t2k/nd280 slow controls 
> daq system at TRIUMF.
> svn rev 4487


An updated version of the SQL history code is now committed to midas svn.

The new code is in history_sql.cxx. It implements a C++ interface to the MIDAS history (history.h),
and improves on the old code history_odbc.cxx by adding:
- an index table for remembering MIDAS names of SQL tables and columns (our midas users like to use funny characters in history 
names that are not permitted in SQL table and column names),
- caching of database schema (event names, etc) with a noticeable speedup of mhttpd (there is a new button on the history panel editor 
"clear history cache" to make mhttpd reload the database schema.

The updated documentation for using SQL history is committed to midas svn doxfiles/internal.dox (svn up; make dox; firefox 
doxfiles/html/index.html), or see my copy on the web at
http://ladd00.triumf.ca/~olchansk/midas/Internal.html#History_sql_internal

svn rev 4595
K.O.

$ grep -n "class SqlODBC" src/*
src/history_odbc.cxx:282:class SqlODBC: public SqlBase
src/history_sql.cxx:293:class SqlODBC: public SqlBase

Linking CXX shared library lib/libmidas.so
/usr/bin/cmake -E cmake_link_script CMakeFiles/midas-shared.dir/link.txt --verbose=1
/usr/bin/c++  -fPIC   -shared -Wl,-soname,libmidas.so -o lib/libmidas.so CMakeFiles/midas-shared.dir/src/ftplib.c.o CMakeFiles/midas-shared.dir/src/midas.c.o CMakeFiles/midas-shared.dir/src/system.c.o CMakeFiles/midas-shared.dir/src/mrpc.c.o CMakeFiles/midas-shared.dir/src/odb.c.o CMakeFiles/midas-shared.dir/src/ybos.c.o CMakeFiles/midas-shared.dir/src/history.c.o CMakeFiles/midas-shared.dir/src/alarm.c.o CMakeFiles/midas-shared.dir/src/elog.c.o CMakeFiles/midas-shared.dir/opt/DAQ/repos/bot/mxml/mxml.c.o CMakeFiles/midas-shared.dir/opt/DAQ/repos/bot/mxml/strlcpy.c.o CMakeFiles/midas-shared.dir/src/history_odbc.cxx.o CMakeFiles/midas-shared.dir/src/history_sql.cxx.o 
CMakeFiles/midas-shared.dir/src/history_sql.cxx.o: In function `SqlODBC':
/opt/DAQ/repos/bot/midas/src/history_sql.cxx:200: multiple definition of `SqlODBC::SqlODBC()'
CMakeFiles/midas-shared.dir/src/history_odbc.cxx.o:/opt/DAQ/repos/bot/midas/src/history_odbc.cxx:315: first defined here
...
history_odbc.cxx:727: first defined here
collect2: ld returned 1 exit status
make[2]: *** [lib/libmidas.so] Error 1

> Linking CXX shared library lib/libmidas.so
/usr/bin/c++  ... -o lib/libmidas.so ... CMakeFiles/midas-shared.dir/src/history_odbc.cxx.o 
CMakeFiles/midas-shared.dir/src/history_sql.cxx.o 
CMakeFiles/midas-shared.dir/src/history_sql.cxx.o: In function `SqlODBC':
/opt/DAQ/repos/bot/midas/src/history_sql.cxx:200: multiple definition of `SqlODBC::SqlODBC()'
CMakeFiles/midas-
shared.dir/src/history_odbc.cxx.o:/opt/DAQ/repos/bot/midas/src/history_odbc.cxx:315: first defined 
here
> Why is the class "SqlODBC" duplicated?

This is interesting. I do not think my C++ book spells it out that I cannot have class A in foo.cxx
and a class A in bar.cxx. In fact I already discovered that the two classes A will collide (duplicate default 
constructor A::A, even if all other member functions are different) if I link an executable that uses both 
foo.o and bar.o.

Is there a way around this problem? In C, I can declare functions and variables "static" to "hide" them
from the linker.

What is the C++ equivalent for classes? (Any C++ experts here?)

In this specific case, the file history_odbc.cxx will disappear with the next commit of mhttpd, hopefully 
today. mlogger and mh2sql already do not use it.

And I will commit the Makefile change renaming libmidas.so to libmidas-shared.so, so we can build it 
by default but still link midas core executables to the normal midas library.

This will catch such a problem if it happens again.

K.O.

> > Why is the class "SqlODBC" duplicated?
> 
> This is interesting. I do not think my C++ book spells it out that I cannot have class A in foo.cxx
> and a class A in bar.cxx.

I guess nobody knows the answer to this C++ puzzle. In any case history_odbc.cxx is not used anymore removing duplication of class SqlODBC.

svn rev 4594
K.O.

I have experienced a problem building MIDAS from the head of the SVN repository (rev 4458) when 
specifying the shared library flag. Whie the shared library appears to compile and link OK, the 
subsequent compilation of mserver fails as follows:

$ make ROOTSYS= NEED_SHLIB=1

<... snipped some lines ...>

ld -shared -o linux/lib/libmidas.so linux/lib/midas.o linux/lib/system.o linux/lib/mrpc.o 
linux/lib/odb.o linux/lib/ybos.o linux/lib/ftplib.o linux/lib/mxml.o linux/lib/history_midas.o 
linux/lib/history_sql.o linux/lib/history.o linux/lib/alarm.o linux/lib/elog.o linux/lib/strlcpy.o -lutil -
lpthread -lz -lc
cc -c -g -O2 -Wall -Wuninitialized -Iinclude -Idrivers -I../mxml -Llinux/lib -DINCLUDE_FTPLIB   -
D_LARGEFILE64_SOURCE -DHAVE_ZLIB -DOS_LINUX -fPIC -Wno-unused-function -o linux/lib/mana.o 
src/mana.c
cc -c -g -O2 -Wall -Wuninitialized -Iinclude -Idrivers -I../mxml -Llinux/lib -DINCLUDE_FTPLIB   -
D_LARGEFILE64_SOURCE -DHAVE_ZLIB -DOS_LINUX -fPIC -Wno-unused-function -o 
linux/lib/cnaf_callback.o src/cnaf_callback.c
cc -c -g -O2 -Wall -Wuninitialized -Iinclude -Idrivers -I../mxml -Llinux/lib -DINCLUDE_FTPLIB   -
D_LARGEFILE64_SOURCE -DHAVE_ZLIB -DOS_LINUX -fPIC -Wno-unused-function -o linux/lib/mfe.o 
src/mfe.c
g++ -Dextname -DMANA_LITE -c -g -O2 -Wall -Wuninitialized -Iinclude -Idrivers -I../mxml -
Llinux/lib -DINCLUDE_FTPLIB   -D_LARGEFILE64_SOURCE -DHAVE_ZLIB -DOS_LINUX -fPIC -Wno-
unused-function -o linux/lib/fal.o src/fal.c
cc -g -O2 -Wall -Wuninitialized -Iinclude -Idrivers -I../mxml -Llinux/lib -DINCLUDE_FTPLIB   -
D_LARGEFILE64_SOURCE -DHAVE_ZLIB -DOS_LINUX -fPIC -Wno-unused-function -o 
linux/bin/mserver src/mserver.c -lmidas -Wl,-rpath,/usr/local/lib -lutil -lpthread -lz
/usr/bin/ld: linux/bin/mserver: hidden symbol `__dso_handle' in /usr/lib/gcc/x86_64-redhat-
linux/4.1.2/crtbegin.o is referenced by DSO
/usr/bin/ld: final link failed: Nonrepresentable section on output
collect2: ld returned 1 exit status
make: *** [linux/bin/mserver] Error 1

Having googled the error, it appears to be solved by modifying the linker statement for the shared 
library in the Makefile at line 464 to use g++ rather than ld:

463c463
< 	ld -shared -o $@ $^ $(LIBS) -lc
---
> 	$(CXX) -shared -o $@ $^ $(LIBS) -lc

Presumably this is because g++ knows better how to link in the appropriate system libraries required 
for some of the recently added C++ code? 

This was on Scientific Linux SL5.2 x86_64, gcc version 4.1.2, glibc version 2.5-24.

Tim

> --- Makefile
> < 	ld -shared -o $@ $^ $(LIBS) -lc
> ---
> > 	$(CXX) -shared -o $@ $^ $(LIBS) -lc

Will do. We also have a long standing request to change shared library name from lidmidas.so to libmidas-shared.so.

Different name for the .so file will permit us to build the shared library by default, but still link all MIDAS executables
with the static libmidas.a.

(there is no benefit from linking MIDAS executables - mlogger, mhttpd, etc - with the shared library,
and there is a significant cost in confusion from version skew between the executables and shared
libraries - I have had enough midnight calls "why did odbedit stop working? Oh, who changed LD_LIBRARY_PATH
and why is it now binding against this obsolete libmidas.so left over from 2 years ago?").

For user applications you can do whatever, but for MIDAS core applications I strongly suggest that they
be linked to the midas static library.

K.O.

> > > 	$(CXX) -shared -o $@ $^ $(LIBS) -lc

Done.
MIDAS shared library renamed from libmidas.so to libmidas-shared.so and always build on Linux (.so) and MacOS (.dylib and .so bundle).

Users who wish to link their applications to the shared library should change their Makefile from "gcc ... -lmidas" to "gcc ... -lmidas-shared".

MIDAS core applications (mhttpd, mlogger, etc) are linked to the static library to permit multiple versions of midas to be used
at the same time (LD_LIBRARY_PATH should point to the shared library for *which* midas?!?), avoid problems with wrong setting
of LD_LIBRARY_PATH and to avoid problems with version skew (which we found unavoidable once a midas daq is used for a year or
more - main reason we gave up on using the midas shared library in the first place).

svn rev 4594
K.O.

Platform: Debian Linux testing
Compiler: gcc 4.3.4 (Debian 4.3.4-2)
Arch: x86
Description:
  The "g++" is whining while compiling history_midas.cxx. Please see the attached log file.
This can be fixed by add "#include <cstdlib>" to the C++ source. You know, different versions
of g++ don't act the same way. I think, maybe in version 4.2 or before, g++ can automatically
include the C header "stdlib.h" (which in C++ should be <cstdlib> because of some confusion
between C and C++), but not in version 4.3 or later. I tested g++-4.4, the problem still exists.
And g++-4.2 gives no error.

>  The "g++" is whining while compiling history_midas.cxx. Please see the attached log file.

Fixed. svn 4594. K.O.

The latest version of mfe.c has a problem where poll_event() is called before
frontend_init() and this causes a crash because in poll_event() we try to access
VME before it is initialized in frontend_init(). K.O.

> The latest version of mfe.c has a problem where poll_event() is called before
> frontend_init() and this causes a crash because in poll_event() we try to access
> VME before it is initialized in frontend_init(). K.O.

Oops, that sneaked in when doing the last modification to display the frontend status. 
I refactored register_equipment() so that frontend_init() gets called before 
poll_event().

$ odbedit -e expcvadc
odbedit: /opt/DAQ/repos/bot/midas/src/odb.c:651: db_validate_sizes: Assertion `sizeof(EQUIPMENT_INFO) == 400' failed.
zsh: abort      odbedit -e expcvadc

-----------------------------------------------------------------------
r4568 | olchanski | 2009-09-27 23:56:39 +0800 (日, 27  9月 2009) | 5 lines

mhttpd: compile using the C++ compiler.
mhttpd: fix wrong initialization of /History/ODBC_DSN
odb.c: size of EQUIPMENT_INFO has changed.
Makefile: use "-O2" compiler flag instead of "-O3" - to fix SL5 gcc crash (ICE) 

Linking CXX executable bin/mh2sql
CMakeFiles/mh2sql.dir/utils/mh2sql.cxx.o: In function `main':
/opt/DAQ/repos/bot/midas/utils/mh2sql.cxx:150: undefined reference to `MakeMidasHistoryODBC()'

> Linking CXX executable bin/mh2sql
> CMakeFiles/mh2sql.dir/utils/mh2sql.cxx.o: In function `main':
> /opt/DAQ/repos/bot/midas/utils/mh2sql.cxx:150: undefined reference to `MakeMidasHistoryODBC()'

Yes, I am in the process of changing the midas history interface and accidentally committed a version of 
mh2sql (utility for converting MIDAS history .hst files to SQL database) that uses the new interface.

This is now fixed in svn rev 4571.

The new C++ interface to the MIDAS history is in include/history.h and implementations for data storage 
using both midas .hst files and SQL (ODBC/MySQL) database are also committed (history_midas.cxx
and history_sql.cxx). The file history_odbc.cxx will be removed after some more testing of the new 
interface.

(All the new code is not activated yet, pending more testing).

K.O.

> $ odbedit -e expcvadc
> odbedit: /opt/DAQ/repos/bot/midas/src/odb.c:651: db_validate_sizes: Assertion 
`sizeof(EQUIPMENT_INFO) == 400' failed.

Yes, this is now fixed, svn rev 4571 should be okey. Sorry about causing this problem - Stefan added 
some useful additional data to EQUIPMENT_INFO and my check for binary compatibility caught it and 
complained. Unfortunately on Saturday Stefan had to abruptly go back to PSI and things have been a little 
bit chaotic because we did not complete the testing of all the new changes and additions.

K.O.

A new feature has been implemented in revision 4561 which allows runs with a 
certain duration. To use this, one has to set the variaable

/Logger/Run Duration

to a non-zero value in seconds. After a run lasted for this duration, it gets 
stopped automatically by the logger. If the auto-restart flag is on, this allows 
sequences of automatically started and stopped runs with all then have the same 
duration.

> A new feature has been implemented in revision 4561 which allows runs with a 
> certain duration. To use this, one has to set the variaable
> 
> /Logger/Run Duration
> 
> to a non-zero value in seconds. After a run lasted for this duration, it gets 
> stopped automatically by the logger. If the auto-restart flag is on, this allows 
> sequences of automatically started and stopped runs with all then have the same 
> duration.

A similar scheme has been implemented to pose a certain duration on subruns. This can 
be controlled by the variable

/Logger/Subrun duration

when set to a non-zero value in seconds.

Hi All,

I set "/Analyzer/ODB Load" to true and analyzed a run in offline mode. After
that, I found the start time and stop time in /RunInfo did not reflect the
correct time as in online. How do I retrieve the correct start/stop time from
the ODB in offline mode?

Thanks!

Jimmy

> I set "/Analyzer/ODB Load" to true and analyzed a run in offline mode. After
> that, I found the start time and stop time in /RunInfo did not reflect the
> correct time as in online. How do I retrieve the correct start/stop time from
> the ODB in offline mode?

Most trees in the ODB are not loaded with "/Analyzer/ODB Load", since you might 
want to have the start/stop time of the offline analysis there for example 
(although I agree that the online start/stop time is more interesting). So you 
have several options:

- modify mana.c. There is a function odb_load(), which first locks the whole ODB 
and then unprotects "/Experiment/Run Parameters" for example. Just add three more 
lines for "/Runinfo".

- write a run summary when running online. After each run, write a summary with 
start/stop time, number of events, settings etc. into some file. I usually do this 
in the EOR routine of the online analyzer and write directly into a CSV file which 
I can import directly into Excel. There I can make filtering depending on certain 
parameters, like show me all runs with more than x events where setting y was 10.

- extract the ODB from the .mid file with "odbhist -e filename.mid" and look into 
that.

- The time stamp of each event is in UNIX time form (seconds since 1.1.1970), so 
you now exactly when each event was recorded.

Hope one of this helps...

- Stefan

Hi,
I am writing shell scripts to create some tree structure in an ODB. When 
creating an array of strings, the default length of each string element is 32 
characters. If odbedit is used interactively to create the array of strings, 
the user is prompted to enter a different length if desired. But if the 
command odbedit is called from a shell script, I did not succeed in passing 
the argument to get a different length.
I tried:
odbedit -c "create STRING Test[8][40]"
Or:
odbedit -c "create STRING Test[8] 40"
Or:
odbedit -c "create STRING Test[8] \n 40"
etc. all produce an array of 8 strings with 32 characters each.
I haven't tried all possible syntaxes, but I suspect the length argument is 
dropped. If it has not been fixed in a later release than the one I am using, 
could this problem be looked at?
Thanks,
Denis.
  

> Hi,
> I am writing shell scripts to create some tree structure in an ODB. When 
> creating an array of strings, the default length of each string element is 32 
> characters. If odbedit is used interactively to create the array of strings, 
> the user is prompted to enter a different length if desired. But if the 
> command odbedit is called from a shell script, I did not succeed in passing 
> the argument to get a different length.
> I tried:
> odbedit -c "create STRING Test[8][40]"
> Or:
> odbedit -c "create STRING Test[8] 40"
> Or:
> odbedit -c "create STRING Test[8] \n 40"
> etc. all produce an array of 8 strings with 32 characters each.
> I haven't tried all possible syntaxes, but I suspect the length argument is 
> dropped. If it has not been fixed in a later release than the one I am using, 
> could this problem be looked at?

Ok, I added a command

odbedit -c "create STRING Test[8][40]"

which works now. Please update to SVN revision 4555 of odbedit.c

- Stefan

> Ok, I added a command
> 
> odbedit -c "create STRING Test[8][40]"
> 
> which works now. Please update to SVN revision 4555 of odbedit.c
> 
> - Stefan

If I want to create only one string, should I write like this:

  odbedit -c "create STRING Test[] [256]"

OK. I need it. I will try the new odbedit.

> > Ok, I added a command
> > 
> > odbedit -c "create STRING Test[8][40]"
> > 
> > which works now. Please update to SVN revision 4555 of odbedit.c
> > 
> > - Stefan
> 
> If I want to create only one string, should I write like this:
> 
>   odbedit -c "create STRING Test[] [256]"
> 
> OK. I need it. I will try the new odbedit.

"create STRING test[1][256]" works.

Another problem while using odbedit.
I tried the batch mode of "odbedit". I created a key as "/A_Str" by mistake and 
wanted to delete it. Then "odbedit" failed to accept the "Return" key. Please see 
the screen-shot attached. :-(

> Another problem while using odbedit.
> I tried the batch mode of "odbedit". I created a key as "/A_Str" by mistake and 
> wanted to delete it. Then "odbedit" failed to accept the "Return" key. Please see 
> the screen-shot attached. :-(

This bug has been fixed in the latest repository.
I encountered it in svn-r4488.

I write some configure file to build MIDAS using CMake. The usage is simple:
1. Unzip the attachment, copy "CMakeLists.txt" and directory "cmake" into the
midas source tree.
   $ cp -rp CMakeLists.txt cmake/  <PATH-TO-MIDAS>/
2. make a separate directory, such as "build". It's a good habit to build a
project without polluting the source tree. :-)
   $ mkdir build
3. Executing cmake
   $ cd build && cmake <PATH-TO-MIDAS>
4. Make
   $ make

Or, you can generate Xcode project files:
  $ cmake -G Xcode <PATH-TO-MIDAS>
or using visual studio
  $ cmake -G "Visual Studio" <PATH-TO-MIDAS>
(I havn't Visual Studio and windows, so the above command is not tested.)
or using other IDEs, such as KDevelop3, Eclipse, etc, just type:
  $ cmake -G "KDevelop3" <PATH-TO-MIDAS>
or
  $ cmake -G "Eclipse CDT4" <PATH-TO-MIDAS>


I test the configure file with GNU make and CMake 2.6.4 on Debian Lenny. I
havn't add installation commands now. Maybe later. If anyone interests in it, I
may check it again. Anyway, I'm using it.

Add installation commands. Please see the attachment.

/opt/DAQ/bot/midas/src/history_odbc.cxx: In member function 'virtual int 
SqlODBC::GetNumRows()':
/opt/DAQ/bot/midas/src/history_odbc.cxx:589: error: cannot convert 'SQLINTEGER*' 
to 'long int*' for argument '2' to 'SQLRETURN SQLRowCount(void*, long int*)'
/opt/DAQ/bot/midas/src/history_odbc.cxx: In member function 'virtual const char* 
SqlODBC::GetColumn(int)':
/opt/DAQ/bot/midas/src/history_odbc.cxx:638: error: cannot convert 'SQLINTEGER*' 
to 'long int*' for argument '6' to 'SQLRETURN SQLGetData(void*, SQLUSMALLINT, 
SQLSMALLINT, void*, long int, long int*)'
make[2]: *** [CMakeFiles/midas-static.dir/src/history_odbc.cxx.o] Error 1
make[2]: Leaving directory `/opt/DAQ/bot/midas/build'
make[1]: *** [CMakeFiles/midas-static.dir/all] Error 2
make[1]: Leaving directory `/opt/DAQ/bot/midas/build'

I tried to use odbedit to set the "/System/Prompt" to "%h:%e:%s %p> " and got a
problem: pressing "Return" doesn't work any more. But "[%h:%e:%s]%p> " works fine.
Please see the attachment.

> I tried to use odbedit to set the "/System/Prompt" to "%h:%e:%s %p> " and got a
> problem: pressing "Return" doesn't work any more. But "[%h:%e:%s]%p> " works fine.
> Please see the attachment.

I fixed that problem in SVN revision 4556. It occurred when the prompt does start with a 
'%' which nobody tried before...

180:         printf("camop\n");
181:         camop();

void cam_op()
{
}

mcnaf.c:(.text+0x3b1): undefined reference to `camop'
collect2: ld returned 1 exit status

> If you compile each source into an object, you may encounter a link error ...

Also camac rpc did not work at all last time we tried to use it at triumf, maybe 4 month ago in the Dragon 
experiment (upgrade from older version of midas). Never got around to trace down why. YMMV.

K.O.

drivers/camac/camaclx.c:760:INLINE void cam_op()
drivers/camac/camacnul.c:200:INLINE void cam_op()
drivers/camac/camacrpc.c:563:void cam_op()
drivers/camac/cc7700pci.c:744:INLINE void cam_op()
drivers/camac/ces2117.c:227:void cam_op()
drivers/camac/ces8210.c:553:void cam_op(void)
drivers/camac/ces8210.c:576:    cam_op();
drivers/camac/ces8210.c:625:    cam_op();
drivers/camac/dsp004.c:692:void cam_op()
drivers/camac/hyt1331.c:1125:INLINE void cam_op()
drivers/camac/jorway73a.c:563:INLINE void cam_op()
drivers/camac/kcs2926.c:618:INLINE void cam_op()
drivers/camac/kcs2927.c:677:INLINE void cam_op()
drivers/camac/wecc32.c:554:INLINE void cam_op()

cc -g -O3 -Wall -Wuninitialized -Iinclude -Idrivers -I../mxml -Llinux/lib -DINCLUDE_FTPLIB   -D_LARGEFILE64_SOURCE -DHAVE_MYSQL -I/usr/include/mysql -DHAVE_ODBC -DHAVE_ZLIB -DOS_LINUX -fPIC -Wno-unused-function -o linux/bin/mcnaf utils/mcnaf.c drivers/camac/camacrpc.c linux/lib/libmidas.a -lutil -lpthread -lodbc -lz

#ifndef _ANULLF_H_
#define _ANULLF_H_ 1

#define EXTERNAL extern

#if defined( _MSC_VER )
#define INLINE __inline
#elif defined(__GNUC__)
#define INLINE __inline__
#else
#define INLINE
#endif
/* make functions under WinNT dll exportable */
#if defined(_MSC_VER) && defined(MIDAS_DLL)
#define EXPRT __declspec(dllexport)
#else
#define EXPRT
#endif

EXTERNAL INLINE void EXPRT camop() {  };

#endif

#include "anullf.h"

void cam_op() {}

#include "anullf.h"
#include <stdio.h>

int main(int argc, char** argv)
{
  camop();
}

$ gcc -O -o ma ma_1.c ma.c

Dear All,

I'm using SL5 and MIDAS rev 4528. Occasionally, when I stop a run in odbedit, 
a timeout would occur: 
[midas.c:9496:rpc_client_call,ERROR] rpc timeout after 121 sec, routine 
= "rc_transition", host = "computerB", connection closed
Error: Unknown error 504 from client 'Frontend' on host computerB

This error seems to be random without any reason or pattern. After this error 
occurs, I cannot start or stop any run. Sometime restarting MIDAS can bring 
the system working again, but sometime not.

Another transition timeout occurs after I change any ODB value using the web 
interface:
[midas.c:8291:rpc_client_connect,ERROR] timeout on receive remote computer 
info: 
[midas.c:3642:cm_transition,ERROR] cannot connect to client "Frontend" on host 
computerB, port 36255, status 503
Error: Cannot connect to client 'Frontend'

This error is reproducible: start run -> change ODB value within webpage -> 
stop run -> timeout!

Any idea?

Thanks,
Jimmy

> Dear All,
> 
> I'm using SL5 and MIDAS rev 4528. Occasionally, when I stop a run in odbedit, 
> a timeout would occur: 
> [midas.c:9496:rpc_client_call,ERROR] rpc timeout after 121 sec, routine 
> = "rc_transition", host = "computerB", connection closed
> Error: Unknown error 504 from client 'Frontend' on host computerB
> 
> This error seems to be random without any reason or pattern. After this error 
> occurs, I cannot start or stop any run. Sometime restarting MIDAS can bring 
> the system working again, but sometime not.
> 
> Another transition timeout occurs after I change any ODB value using the web 
> interface:
> [midas.c:8291:rpc_client_connect,ERROR] timeout on receive remote computer 
> info: 
> [midas.c:3642:cm_transition,ERROR] cannot connect to client "Frontend" on host 
> computerB, port 36255, status 503
> Error: Cannot connect to client 'Frontend'
> 
> This error is reproducible: start run -> change ODB value within webpage -> 
> stop run -> timeout!

A few hints for debugging:

- do the run stop via odbedit and the "-v" flag, like

[local:Online:R]/> stop -v

then you see which computer is contacted when.

- Then put some debugging code into your front-end end_of_run() routine at the 
beginning and the end of that routine, so you see when it's executed and how long 
this takes. If you do lots of things in your EOR routine, this could maybe cause a 
timeout.

- Then make sure that cm_yield() in mfe.c is called periodically by putting some 
debugging code there. This function checks for any network message, such as the 
stop command from odbedit. If you trigger event readout has an endless loop for 
example, cm_yield() will never be called and any transition will timeout.

- Make sure that not 100% CPU is used on your frontend. Some OSes have problems 
handling incoming network connections if the CPU is completely used of if 
input/output operations are too heavy.

- Stefan