Finding memory leaks

Printable View

June 3rd, 2006, 05:24 AM
ravikishore77

Finding memory leaks

can we efficiently find the memory leaks through task manager?
is it a good way?

thanks a lot
RaviKishore.
June 3rd, 2006, 07:00 AM
wildfrog

Re: Finding memory leaks

Quote:

can we efficiently find the memory leaks through task manager?
is it a good way?

Well, there are probably better solutions. But, both the Task Manager and the Performance Monitor will help you a great deal with finding memory and resource (handles, gdi etc.) leaks.

- petter
June 4th, 2006, 04:25 AM
tthmaz

Re: Finding memory leaks

I've heard that both firefox and opera have memory leaks.

I used both programs and i do agree that sometimes too many tabs are open at the same time, the memory will spike to the top.

Anyone have the same experience with me or am the only one?

What actually causes memory leaks?
From what i know: using malloc() without ending it with free()

Any other causes?
June 4th, 2006, 05:54 AM
Ajay Vijay

Re: Finding memory leaks
Here are few combinations:
- malloc - free
- new - delete
- VirtualAlloc - VirtualFree
- HeapAlloc - HeapFree
- LocalAlloc - LocalFree
- GlobalAlloc - GlobalFree
June 4th, 2006, 07:33 AM
Emiene

Re: Finding memory leaks

Improper use of constructors and destructors
June 4th, 2006, 02:00 PM
Ajay Vijay

Re: Finding memory leaks

Quote:

Originally Posted by Emiene

Improper use of constructors and destructors

Can you give a single example for CTOR/DTOR implications, without putting the memory allocation/de-allocation stuff?? :rolleyes:
June 5th, 2006, 12:11 AM
tthmaz

Re: Finding memory leaks

Quote:

Originally Posted by Ajay Vijay

Here are few combinations:[*]new - delete

Can you show me how can this cause a problem?

I have some experience with Java, and the "new" is used for defining new objects of a class. I think it is used for the same purpose in Visual C++ (correct me if i'm wrong). But in Java, i never see the need to "delete" after "new". Is it because Java does garbage collection and cleanup by itself while visual C++ doesn't?
June 5th, 2006, 09:59 AM
Ajay Vijay

Re: Finding memory leaks

Quote:

I have some experience with Java, and the "new" is used for defining new objects of a class. I think it is used for the same purpose in Visual C++ (correct me if i'm wrong). But in Java, i never see the need to "delete" after "new". Is it because Java does garbage collection and cleanup by itself while visual C++ doesn't?

Absolutely. Java has its Runtime environment called JVM.
C++ does NOT have anything as such. The runtime environment is the OS (unless it is attached to debugger, in that case Debugger is actually RTE).

You have to delete the memory yourself. This is one of the reason why C/C++ gives manifold performance over Java and other "runtime needed" languages like C#, VB.NET etc.

You'll find thousands of articles on the Internet about Java and C++ differences.