Re: How to dispose of memblock after REALPtrToMemoryBlock?

[Jonathan Johnson <jonj at realsoftware dot com>]

On Sep 13, 2004, at 10:27 AM, Peter K.Stys wrote:
> ...but how would I get the ptr to free it using 
> free(REALMemoryBlockGetPtr(returnMemBlock)) if returnMemBlock has gone 
> out of scope (and presumably is nil or garbage?)
You can store the pointer somewhere in your plugin.

> I will be the only one ever calling these functions so is there a 
> danger to free a pointer inside a memblock without RB's knowledge 
> (making sure the block never gets accessed, and doing it right before 
> it goes out of scope?)
Well, take this example:

void DoSomething()
{
        void *theData = GetTheDataSomehow();
        REALmemoryBlock mb = REALPtrToMemoryBlock( (Ptr)theData );

        CallMySpiffyFunctionThatNeedsAMemoryBlock( mb );

        // Now, we are done with the data
	REALUnlockObject( mb ); // This is required because we are the ones 
who created the memoryblock,
                                                //  and now we want to destroy 
it
        free( theData ); // This is to free the actual memory
}

HTH,
Jon

_______________________________________________
Unsubscribe or switch delivery mode:
<http://www.realsoftware.com/support/listmanager/>

Search the archives of this list here:
<http://www.realsoftware.com/listarchives/lists.html>