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Full Discussion: Multithreading in Pro*C
Top Forums Programming Multithreading in Pro*C Post 10558 by rwb1959 on Friday 16th of November 2001 08:44:32 AM
Old 11-16-2001
dbx should work for you. You can even
execute the program via dbx and set break points
to allow you to step through the segment of code
and "watch" the variable in question. However,
multithreaded programs tend to be more difficult
to "step" through and in many cases that I have
observed personally, the code will not fail
when executed from the debugger Smilie

I would recommend a couple of things...
I would first add signal handling to catch
the signal (I assume you are getting a SEGV or
Segmentation fault type of error). This will
at least allow you to "control" the fault
detection to allow your program to "clean up"
then you can all "abort()" to dump a core image
if you like. Also, I would go to the
"old fashioned" way of what I like to call
"brute force" debugging. I would add logging
code around the sections of code that assign
values to this variable (be sure to "flush()" the
output to the log before moving on to the next
statement). Also, make sure that the Oracle
libraries and any shared libraries that you use
on the production machine are the same version
as your development environment.

Another thing to try, is if you can build the
code completely with "static" libraries, do that.

It may also help to post the "exact" system
error message. I assuming it's a SEGV error
which typically indicates stack corruption which
can easily happen if the bounds of an array are
exceeded but seeing the error would verify this
assumption.
 

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DH_STRIP(1)							     Debhelper							       DH_STRIP(1)

NAME
dh_strip - strip executables, shared libraries, and some static libraries SYNOPSIS
dh_strip [debhelperoptions] [-Xitem] [--dbg-package=package] [--keep-debug] DESCRIPTION
dh_strip is a debhelper program that is responsible for stripping executables, shared libraries, and static libraries that are not used for debugging. This program examines your package build directories and works out what to strip on its own. It uses file(1) and file permissions and filenames to figure out what files are shared libraries (*.so), executable binaries, and static (lib*.a) and debugging libraries (lib*_g.a, debug/*.so), and strips each as much as is possible. (Which is not at all for debugging libraries.) In general it seems to make very good guesses, and will do the right thing in almost all cases. Since it is very hard to automatically guess if a file is a module, and hard to determine how to strip a module, dh_strip does not currently deal with stripping binary modules such as .o files. OPTIONS
-Xitem, --exclude=item Exclude files that contain item anywhere in their filename from being stripped. You may use this option multiple times to build up a list of things to exclude. --dbg-package=package Causes dh_strip to save debug symbols stripped from the packages it acts on as independent files in the package build directory of the specified debugging package. For example, if your packages are libfoo and foo and you want to include a foo-dbg package with debugging symbols, use dh_strip --dbg-package=foo-dbg. Note that this option behaves significantly different in debhelper compatibility levels 4 and below. Instead of specifying the name of a debug package to put symbols in, it specifies a package (or packages) which should have separated debug symbols, and the separated symbols are placed in packages with -dbg added to their name. -k, --keep-debug Debug symbols will be retained, but split into an independent file in usr/lib/debug/ in the package build directory. --dbg-package is easier to use than this option, but this option is more flexible. NOTES
If the DEB_BUILD_OPTIONS environment variable contains nostrip, nothing will be stripped, in accordance with Debian policy (section 10.1 "Binaries"). CONFORMS TO
Debian policy, version 3.0.1 SEE ALSO
debhelper(7) This program is a part of debhelper. AUTHOR
Joey Hess <joeyh@debian.org> 9.20120909 2012-05-19 DH_STRIP(1)
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