Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Catching system exceptions using C++ exception handling

Posted on 2002-06-26
8
Medium Priority
?
372 Views
Last Modified: 2008-03-17
Is that posible to catch system exceptions like "access violation" by using C++ exception handling? In that case what will be the thrown object that I can use into the catch() statement? I don't want to use the catch(...) because I need more information about the exception.

Thanks
0
Comment
Question by:lucand
  • 3
  • 3
  • 2
8 Comments
 
LVL 32

Expert Comment

by:jhance
ID: 7112338
It depends.  What operating system are you using?
0
 
LVL 86

Expert Comment

by:jkr
ID: 7112417
>>It depends.

Actually, there are just 2 ways - SEH (Win32) or signals (all POSIX).

So, in code

(SEH)
__try {

 // code here

} __except ( EXCEPTION_ACCESS_VIOLATION == GetExceptionCode()) {

throw new XcpMyAccVio ();
}

(POSIX)
void my_sigsegv_handler ( int) {

throw new XcpMyAccVio ();
}

signal ( SIGSEGV, my_sigsegv_handler);
0
 

Author Comment

by:lucand
ID: 7113972
I use WindowsNT,2000

I allready tryed signals and _set_se_translator() but not working into a multithreading program(any sugestions?).

SEH is not specifically designed for C++ and I get the following compilation error: "Cannot use __try in functions that require object unwinding"

0
Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

 
LVL 86

Accepted Solution

by:
jkr earned 200 total points
ID: 7114071
>>SEH is not specifically designed for C++ and I get the
>>following compilation error: "Cannot use __try in
>>functions that require object unwinding"

Yes, but this is not a problem. You would overcome this by simply not using the SEH frame handler in functions that have non-scalar data types.

Even easier, you could use 'SetUnhandledExceptionFilter()', e.g.

LONG
UnhandledExceptionFilter(
  STRUCT _EXCEPTION_POINTERS *ExceptionInfo   // address of
                                              // exception info
)
{
 if ( EXCEPTION_ACCESS_VIOLATION == GetExceptionCode() {

  throw new XcpMyAccVio ();
 }

 return EXCEPTION_EXECUTE_HANDLER;
}
 

0
 

Author Comment

by:lucand
ID: 7114383
SetUnhandledExceptionFilter() is working with multithreading.

Thanks jkr!
0
 
LVL 32

Expert Comment

by:jhance
ID: 7114396
Hmmm, like I said originally, "It depends...."

The accepted solution is NOT C++ but rather a Windows-ism.
0
 
LVL 86

Expert Comment

by:jkr
ID: 7114441
Well, you could use the 'signal()' approach on Win32 also...
0
 

Author Comment

by:lucand
ID: 7114511
Jhance you are right, that is not a pure C++ solution but it's working fine in Windows.

signal() is not working if the exception is into a child thread or if signal() is called from a DLL

Thanks
0

Featured Post

Concerto Cloud for Software Providers & ISVs

Can Concerto Cloud Services help you focus on evolving your application offerings, while delivering the best cloud experience to your customers? From DevOps to revenue models and customer support, the answer is yes!

Learn how Concerto can help you.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article shows you how to optimize memory allocations in C++ using placement new. Applicable especially to usecases dealing with creation of large number of objects. A brief on problem: Lets take example problem for simplicity: - I have a G…
Container Orchestration platforms empower organizations to scale their apps at an exceptional rate. This is the reason numerous innovation-driven companies are moving apps to an appropriated datacenter wide platform that empowers them to scale at a …
The viewer will learn how to pass data into a function in C++. This is one step further in using functions. Instead of only printing text onto the console, the function will be able to perform calculations with argumentents given by the user.
The viewer will learn how to use the return statement in functions in C++. The video will also teach the user how to pass data to a function and have the function return data back for further processing.

783 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question