[Qt-interest] Huge memory consumption

[Oliver.Knoll at comit.ch]

jjDaNiMoTh wrote on Wednesday, July 07, 2010 3:33 PM:

>> ...
>>  if (theData != 0) {
>>    delete theData;
>>  }

> http://www.parashift.com/c++-faq-lite/freestore-mgmt.html#faq-16.8
> void destroy (TheData *p) {
>    delete p;
> }

Yeah, whatever... that was just me being paranoid ;) I even thought about posting an example code like

void destroy (TheData **theData) {
  delete *theData;
  *theData = 0;
}

Possible syntax errors left in as an exercise for the reader ;) Or would that work, using a reference?

void destroy (TheData &*theData) {
  delete theData;
  theData = 0;
}

Hmmm, been a while since I coded stuff like that. Ain't C/C++ such fun... ;)


So when the caller accidentally accesses the same pointer again you would get a "clean and instant" null pointer access.  But since I always use the same address space across DLL boundaries anyway, I don't need to write such dodgy "helper destroy" functions anyway (because then you still need to remember which object was allocated where, and pick the proper "destroy" function - if I want to deallocate memory, I just want to be able to call delete, never mind "where" it was allocated in the first place. :)

Cheers, Oliver
-- 
Oliver Knoll
Dipl. Informatik-Ing. ETH
COMIT AG - ++41 79 520 95 22