How to allocate huge amounts of memory?
Posted on 2000-02-16
I need to allocate some huge mem blocks (sometimes bigger than physical memory).
But for speed reasons it should be taken from the SysHeap, if possible.
My 1st solution:
- Just call handle=NewhandleSys() and test the return value.
- Problem: if(handle==NULL) then I can see in the computer->AboutBox the the MacOS allocated some mem but it's unable to free these internal blocks (OS-RAM boosted from 30MB to 100MB, only reboot solves the problem)! Why?
My 2nd solution:
- Check first. So I ask the OS via MaxBlockSys(size) - but the answer is always something like 300KB until I made a successful call to NewHandleSys() - how to get the max. allowed size for NewHandleSys()??
I'm getting really confused about that (sorry, but under WinNT I just say malloc() and that's all...).
I'd be really glad if I could get a short explanation about the philosophy behind that. Or a good link.
Thank you very much ion advance!