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Process handles enumeration and nature (VC++, NT no MFC)

How can a thread easily know what handles its process has and what kind of handles they are (thread handle, sempahore handle, file handle..)?

Is the use of PDH (Performance Data Helper) calls the most simple way?

I'm working in Windows NT, programming a component with VC++, using ATL, and no MFC.

nietod

There is no way provided by the windows API to track your handle usage.

You need do so yourself. You can write classes to help you in this. These classes may also good at preventing leaks from handles that are never closed.

perizi

ASKER

Adjusted points from 20 to 40

perizi

ASKER

A class which helps preventing leaks from handles that are never closed sounds really useful.

How would you draw it?

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nietod

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perizi

ASKER

Thanks NIETOD for the useful code.
However, it sounds strange to me why there are no API functions to get one's used handles.
It would be so useful at debbug time!

Thanks again.

nietod

Not really. it would be just as useful as function that returned your dynamically allocted pointers. What would you do with those pointers? You don't know what they point to. The only useful thing you could use it for is to count the handles to see if there are leaks. use the above approach and avoid the memory leaks in the first place.