"Steve Branin" <[EMAIL PROTECTED]> wrote in message
news:69037@palm-dev-forum...
>
> Hi all,
>
> I have searched the archives extensively and I can't find any posts
that
> relate to my problem so I'll ask it here and hope that this isn't a
frequent
> topic here. Here goes.
>
> Typically in C++ when I want to create an instance of an object I do
> something like this:
>
> MyClass* pMyObject = NULL;
> pMyObject = new MyClass();
> if (pMyObject)
> {
> do something
> }
>
> and this is sufficient to verify that enough heap space was available
to
> successfully create the object. However, when I do this in PalmOS and
there
> is not enough memory my application exits on the "new" line and never
makes
> it to the check. What should I be doing to protect myself from an out
of
> memory condition? I found tons of articles about memory management
but none
> that answered my question. Code snippets would be most helpful.
You should use the nothrow version of new.
#include <new>
...
MyClass* pMyObject = NULL;
pMyObject = new (std::nothrow) MyClass();
if (pMyObject)
{
do something
}
This is the standard C++ way of saying that you want to get new memory,
but you don't want an exception thrown if there is an error.
If you're using CodeWarrior, you'll need to add the proper MSL access
path to your project. In CW Palm 8, this is "{Compiler}(MSL for Palm
OS)". In previous versions, you can add "{Compiler}MSL".
--
For information on using the Palm Developer Forums, or to unsubscribe, please see
http://www.palmos.com/dev/tech/support/forums/
