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Community/Discussion/QNX Momentics Community Support/Code Coverage for c++ project/List of Posts
Forum Topic - Code Coverage for c++ project: (8 Items)
   
Update
vijay kumar
05/04/2009 7:21 AM
post28591
Code Coverage for c++ project   
Hi,

I created c++ project in the Momentics IDE 4.0.1.

I have run that project. When i checked for the code coverage.

I found coverage to be the 90% only.

Please find the attached project folder on which i tried.

The coverage data is as follows:

main : 80%
fun1: 75%
Target_based.cc: 88.9%
 
Here i am running all the lines of code. but still it is showing lesser coverage information

Can any one, give the reason for this?

The same type of  C project  is working fine.Its showing 100% coverage information.

Thanks,
Vijay.
Attachment: Compressed file MyWorkspaceTarget.zip 134.51 KB
Elena Laskavaia
05/04/2009 10:46 AM
post28628
Re: Code Coverage for c++ project   
Thanks for attaching your project. We will investigate.

vijay kumar wrote:
> Hi,
> 
> I created c++ project in the Momentics IDE 4.0.1.
> 
> I have run that project. When i checked for the code coverage.
> 
> I found coverage to be the 90% only.
> 
> Please find the attached project folder on which i tried.
> 
> The coverage data is as follows:
> 
> main : 80%
> fun1: 75%
> Target_based.cc: 88.9%
>  
> Here i am running all the lines of code. but still it is showing lesser coverage information
> 
> Can any one, give the reason for this?
> 
> The same type of  C project  is working fine.Its showing 100% coverage information.
> 
> Thanks,
> Vijay.
> 
> _______________________________________________
> QNX Momentics Community Support
> http://community.qnx.com/sf/go/post28591
Alex Chapiro
05/05/2009 9:51 AM
post28691
Re: Code Coverage for c++ project   
Please look at attachment. I used 4.6 IDE, but I think that the same result you will get usiing 4.5 wiith gcc 4.2.
Attachment: Image Target_based.png 70.3 KB
vijay kumar
05/05/2009 1:17 PM
post28721
Re: Code Coverage for c++ project   
Alex,

I am working on Momentics IDE 4.0.1 on QNX System.

I found the problem, It  is with the Launch configuration of the Debug.

When i try to debug the project, its giving the Error while Connecting to Target system.
Its becoming a failure while connecting to the target sytem.
So i am not getting the Code coverage of target system.

I don't know how to connect the target system.

Please let me know how to do this? 
 

Thanks,
Vijay.
Elena Laskavaia
05/05/2009 1:30 PM
post28723
Re: Code Coverage for c++ project   
Last time we talked about it you were trying to run it on Windows. Do you have a target system?

vijay kumar wrote:
> Alex,
> 
> I am working on Momentics IDE 4.0.1 on QNX System.
> 
> I found the problem, It  is with the Launch configuration of the Debug.
> 
> When i try to debug the project, its giving the Error while Connecting to Target system.
> Its becoming a failure while connecting to the target sytem.
> So i am not getting the Code coverage of target system.
> 
> I don't know how to connect the target system.
> 
> Please let me know how to do this? 
>  
> 
> Thanks,
> Vijay.
> 
> _______________________________________________
> QNX Momentics Community Support
> http://community.qnx.com/sf/go/post28721
>
vijay kumar
05/06/2009 9:17 AM
post28787
Re: Code Coverage for c++ project   
I have the Target system(QNX 6.4.0).

Now i tried with the same attached project on Momentics IDE 4.5.0 . I got 100% coverage.

When i tried the same project on Momentics on 4.0.1, Its giving as 90% covearage on QNX Host(6.3.2).

But the same project when I used the "cout" instead of "printf's". 

by enabling the "iostream" and "cstdlib" header files instead of "stdio.h"
 
and "stdlib.h" in Momentics 4.5.0

I am not getting the 100% coverage information.


Can you please give the reason for this?


Thaks,
Vijay.
Alex Chapiro
05/06/2009 10:24 AM
post28813
Re: Code Coverage for c++ project   
If you use classes in your C++ program (which is very natural, by the way:-), for gcc 3.x and older (gcc++ ABI)  you 
newer get 100% block(branch) coverage because of gcc++ implementation  specific .  Below is a fragment extracted from < 
http://www.google.ca/search?hl=en&client=firefox-a&rls=org.mozilla%3Aen-US%3Aofficial&q=gcc+c%2B%2B+abi+constructor+two+destructors&btnG=Search&meta= >, which should explain you why it happens.

G++ emits two copies of constructors and destructors.

    In general there are three types of constructors (and destructors).

       1. The complete object constructor/destructor.
       2. The base object constructor/destructor.
       3. The allocating constructor/deallocating destructor.

    The first two are different, when virtual base classes are involved. 

Line coverage should be free of this specific.
vijay kumar
05/07/2009 1:08 PM
post28960
Re: Code Coverage for c++ project   
Thanks a lot, for this sharing this information.


Regards,
Vijay

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