How to visualize the code flow

Question

I would like to visualize the code flow for a C++ project that I need to modify. The code compiles and runs fine.

Background: Actually I am modifying an MRI sequence code. The framework is being called idea (SIEMENS). It somehow combines visual studio 2008 and cygwin to call customized command line inputs. Even the strucutre of makefile is different from usual makefile that I usually use for C++ project. (Disclaimer: I do not understand much about makefile and its customization nor do I know much about use of cygwin.)

1) I have access to dll and .so files

2) Also, path to include files are somehow abbreviated.

Abbreviated include statement:

#include "MrServers/MrMeasSrv/SeqIF/csequence.h"

Full include statement

#include "C:/MIDEA/N4_VD13A_LATEST_20120616/n4/pkg/MrServers/MrMeasSrv/SeqIF/csequence.h"

3) My project does not start with main(); but, it starts with init() and then it pass to prep(), check(), run(). Prep stage becomes particularly complicated.

4) The IDEA framework is designed in combination with cygwin for command line use only. So, I can not place break point.

Could someone suggest me how to visualize the code flow?

@AB_ I would like to visualize the code flow. If somehow this visualization can be done at the functional level, it would be great. — Garima Singh, Feb 21 '15 at 23:40
http://stackoverflow.com/questions/27857/c-c-source-code-visualization — OldProgrammer, Feb 21 '15 at 23:43
@5gon12eder I am looking for something which can help me visualize the dependencies for already working code. I need to modify the code. — Garima Singh, Feb 21 '15 at 23:57
the best thing you can do is place breakpoint into init function and step into code from there — 4pie0, Feb 21 '15 at 23:57
@AB_ The IDEA framework is designed in combination with cygwin for command line use only. So, I can not place break point. — Garima Singh, Feb 22 '15 at 00:03
@OldProgrammer It seems that DoUML may serve my purpose. But, it's asking for *.prj file and I can see only .dsp. .dsw files in my visual studio 2008 project. — Garima Singh, Feb 22 '15 at 00:13
Chcek out this related question: http://stackoverflow.com/q/27857/120163 — Ira Baxter, Feb 22 '15 at 03:22
@IraBaxter It seems that DoUML may serve my purpose. But, it's asking for *.prj file and I can see only .dsp. .dsw files in my visual studio 2008 project. — Garima Singh, Feb 22 '15 at 17:15
My guess is that you will have to make the ".prj" file by hand. Is that hard? — Ira Baxter, Feb 23 '15 at 12:05

How to visualize the code flow

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