Use https://github.com/dyninst/examples/blob/master/codeCoverage/README.md as an example.

We can ignore the "learning" mode for now.

Hi,
I am following the instructions given in the README of examples repo. I am trying to build codecoverage example.
I used the following command:

$cmake . -DDYNINST_DIR=/tools/spack/opt/spack/linux-ubuntu18.04-skylake/gcc-7.5.0/dyninst-11.0.1-4s4ejzjbibw4vzclube2rxrvusnauuvf/lib/cmake/Dyninst
-- The CXX compiler identification is GNU 7.5.0
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Configuring done
-- Generating done
-- Build files have been written to: /home/sanjay/tools/dyninst-examples/codeCoverage

After that I use make command to build, but got the following error. I have set env DYNINST_INCLUDE to point to /tools/spack/opt/spack/linux-ubuntu18.04-skylake/gcc-7.5.0/dyninst-11.0.1-4s4ejzjbibw4vzclube2rxrvusnauuvf/include.

$ make 
[ 12%] Building CXX object CMakeFiles/code_coverage.dir/code_coverage.C.o
/tools/dyninst-examples/codeCoverage/code_coverage.C:25:10: fatal error: BPatch.h: No such file or directory
 #include "BPatch.h"
          ^~~~~~~~~~
compilation terminated.
CMakeFiles/code_coverage.dir/build.make:75: recipe for target 'CMakeFiles/code_coverage.dir/code_coverage.C.o' failed
make[2]: *** [CMakeFiles/code_coverage.dir/code_coverage.C.o] Error 1
CMakeFiles/Makefile2:89: recipe for target 'CMakeFiles/code_coverage.dir/all' failed
make[1]: *** [CMakeFiles/code_coverage.dir/all] Error 2
Makefile:90: recipe for target 'all' failed
make: *** [all] Error 2

Any suggest to debug the issue is appreciated. Note: I am new to Dyninst.

PS: I think I understood the problem. I used spack to install dyninst, which in turn installed the dependencies separately, including boost, tbb etc. As a result, build is failing. So, time to explore spack first!

When $LD_LIBRARY_PATH is not set,
libtbbmalloc is not linked with the examples binaries,
even though libtbb and libtbbmalloc_proxy are.

`
ldd maxMalloc | grep tbb

    libtbb.so.2 => /p/paradyn/development/wuxx1279/release/lib/libtbb.so.2 (0x00007f8925ca2000)

libtbbmalloc_proxy.so.2 => /p/paradyn/development/wuxx1279/release/lib/libtbbmalloc_proxy.so.2 (0x00007f8925a9f000)

libtbbmalloc.so.2 => not found

`

I tried to link load TBB_LIBRARIES using load_cache and use target_link_libraries against them, but the problem persists.

Use https://github.com/dyninst/examples/blob/master/codeCoverage/README.md as an example.

Use https://github.com/dyninst/examples/blob/master/codeCoverage/README.md as an example.

If a Dyninst_DIR is specified to cmake, that should be the only dyninst used
by the examples build. If that dyninst is missing, or otherwise not found, cmake
should abort.

Instead what happens is the examples cmake config will silently find a "random"
version of dyninst installed elsewhere on the system.

The current failure mode is that you will receive a "random" version of dyninst,
instead of the dyninst the examples needs to be built against.

Per email from AT (former UMD student, works on PEBIL now), codeCoverage is notably slower than DynamoRIO's coverage tool. Having examined the code, I can say why: function calls are evil in a coverage tool and should only occur at startup/shutdown. It would be much more performant to ensure the mapping of block ID to human-readable data occurs at instrumentation time, and thereby each block simply needs to increment an array element.

Use https://github.com/dyninst/examples/blob/master/codeCoverage/README.md as an example.

Use https://github.com/dyninst/examples/blob/master/codeCoverage/README.md as an example.

https://www.dyninst.org/sites/default/files/apiPreprint.pdf

@MandrakeCQC Could you extract the examples from that paper and turn them into working examples- including a sample mutatee for each one, and submit a PR for that? Definitely feel free to work with any of us to get started on the conversions.

I use processCreate instead of processAttach to evaluate retee. Then I registered another one time code which print something in closeFile. After runing, nothing printed by retee.

A link to a simpler but outdated tutorial is here.
http://pages.cs.wisc.edu/~roundy/coverage/
It might be useful to include this example/tutorial into this project.