qtconcurrent cancel without leak memory

[A Former User]

Hi,

I create some resources with new command in heavy job and I want to cancel it. Is it possible to delete the pointer only if it was alocate?

future_ = QtConcurrent::run(this, &Class::foo);

Class::foo() {
    int* bar = new int;
    sleep(1000);
}

Q_SLOT:
    void cancel_button(){
        future_.cancel();
    }

Regards,
Robin

[m.sue]

Hi,
AFAIK you cannot cancel QtConcurrent::run anyway, using future_.cancel().

You can cancel only QtConcurrent computations that work on a container handling each of its members in a separate thread, as to cancel in QtConcurrent means to start no new threads anymore. It does not mean to stop already running threads.
-Michael.

[A Former User]

Thank you for your reply. My button cancel unrun job and wait for running thread.
Robin