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Hi, I am trying to allocate some memory using the C malloc( ) function. It works fine but it allocates it on the internal SRAM rather than on the SDRAM. Do you know how i could do dynamic memory allocation on the SDRAM ? Actually, is there a way to have "2 mallocs", one that would allocate on the SRAM and the other on the SDRAM ? Also, i have read on the documentation that malloc( ) is not an optimal function. It's true that i only plan to do mallocs at the initialization stage of my program, so that shouldn't be a problem. But just out of curiosity, is there also a way to specify on which RAM i allocate memory with VDK_MallocBlock( ) ? Thanks, Laurent |
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Dynamic allocation of memory
Started by ●October 2, 2004
Reply by ●October 4, 20042004-10-04
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You could have 2 different user defined malloc subroutines; one for internal memory and one for external memory. There are a lot of different memory allocations schemes out there. Most have to do with the granularity of the allocation and the difference between where and how the allocation data(ie buffer pointer, allocated size, etc) for the memory is defined. By the way, you'd also need two different free subroutines to deallocate the different types of allocated memory. ADI should provide all the source for it's malloc and free subroutines in the lib/src folder. From these you can determine if they fit your needs or not. "It's true that i only plan to do mallocs at the initialization stage of my program, so that shouldn't be a problem." Why are you using dynamic memory? Regards, Tim Dahlin --- In , "Laurent" <laurent@c...> wrote: > > Hi, > > I am trying to allocate some memory using the C malloc( ) function. > It works fine but it allocates it on the internal SRAM rather than on the > SDRAM. > Do you know how i could do dynamic memory allocation on the SDRAM ? > > Actually, is there a way to have "2 mallocs", one that would allocate on the > SRAM and the other on the SDRAM ? > > Also, i have read on the documentation that malloc( ) is not an optimal > function. > It's true that i only plan to do mallocs at the initialization stage of my > program, so that shouldn't be a problem. > But just out of curiosity, is there also a way to specify on which RAM i > allocate memory with VDK_MallocBlock( ) ? > > Thanks, > Laurent |
