Is there a way to determine if CloseHandle () is the last for a named object?

Question

When creating a named object in the windows, you can find out if the object exists by calling GetLastError() and checking ERROR_ALREADY_EXISTS .

Is there a way to ask a double question: is my CloseHandle() last to close the (descriptor) named resource?

Answer 1

Directly, no.

However, you can get this indirectly by calling GetHandleInformation after CloseHandle . If the descriptor is invalid, the function will fail and set the error number ERROR_INVALID_HANDLE .

And no, not indirectly and think about it again. This will only tell you that your descriptor is invalid ... which you already know from the moment you close it.

Answer 2

No, kernel handlers are not counted . When you call CloseHandle , it closes the handle.