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std::list.clear not clearing?!?

Started by vesoljc Jan 9, 2004 at 3:52 AM 6 replies 300+ views

Original Post

Jan 9, 2004 at 3:52 AM

i''m using std::list with my own class as a template param. the class has no dynamic variables, only float, int and a std::string. when my list is being filled, the mem usage under Task Manager/Processes is growing. after the calcuations, i call clear on my list, i check it''s size and it''s zero, but the mem usage is still the same, it has not droped down... why the mem is''t freed?

vesoljc

Author

vesoljc

Jan 9, 2004 at 4:10 AM

yeah, i know the diff between

<my> and <my*>

and i using the first one....

[edited by - vesoljc on January 9, 2004 5:12:33 AM]

CWizard

Jan 9, 2004 at 4:24 AM

The STL use its own memory handler, that will allocate and free memory in a more efficient manner than through the OS. Thus, the STL is probably still sitting on that memory, ready to give it away on the next allocation needed by an STL object.

Is the memory returned when the list is destroyed/goes out of scope?

vesoljc

Author

vesoljc

Jan 9, 2004 at 4:47 AM

i tried this:


int main(int ldArgNum, char** lpArgArray)
{
    gdArgNum    = ldArgNum;
    gpArgArray  = lpArgArray;

    {
        DSS  gDSS1;
        gDSS1.Init(gdArgNum, gpArgArray);

        gDSS1.Update();
        gDSS1.mdPEList.clear();
    }
    
    // do other stuff, point a

}

dss is my class, init creates the basic stuff and update fills the list. constructor and destructor of gDSS1 are being called, but mem usage is still tha same...

Qw3r7yU10p!

Jan 9, 2004 at 5:11 AM

resize(0) will free the memory

vesoljc

Author

vesoljc

Jan 9, 2004 at 5:39 AM

think it works

tnx

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