Re: Custom memory allocator for running Lua on CM4

[KHMan <keinhong@...>]

On 8/2/2017 7:23 PM, RAHUL KUMAR wrote:
> Right but problem is that system free is not available /restricted
> and even if it is then it will lead to fragmentation. So i was
> thinking to manage the memory myself after system malloc. Just
> wanted to check if there is already allocator available ?

If you have enough memory/performance, Doug Lea's malloc seems 
pretty popular, it's like a de facto standard. Even Cygwin uses 
it, only grumblings I recall relating to Cygwin's malloc are some 
talk of wishing to maximize performance with some sort of 
multi-threaded malloc.

uClibc has some malloc implementations. There are a number of 
other small libc projects in the style of uClibc, all of which 
should offer some sort of malloc.

> On Wed, Aug 2, 2017 at 4:47 PM, Dhaval Kapil wrote:
>
>     > Let me confess i am newbee on Lua and embedded. I am trying to
>     port Lua on custom freertos running on CM4 and which does not
>     have reallocation. is there any standard custom memory
>     allocator available?
>
>     I understand that 'realloc' is unavailable on the custom freertos.
>
>     If you want a 'hack' to get it running, you could probably
>     implement the 'realloc' function as a wrapper over 'malloc'
>     and 'free'?
>
>     On Wed, Aug 2, 2017 at 4:39 PM, RAHUL KUMAR
>     <ryadav.exe@gmail.com <mailto:ryadav.exe@gmail.com>> wrote:
>
>         Let me confess i am newbee on Lua and embedded. I am
>         trying to port Lua on custom freertos running on CM4 and
>         which does not have reallocation. is there any standard
>         custom memory allocator available?
>
>         I was thinking to request a bigger chunk of memory in one
>         shot from the system and later custom allocator will keep
>         allocating and free memory chunk from that.
>
>         Looking forward to hear from you guys.
>
>         -Rahul


--
Cheers,
Kein-Hong Man (esq.)
Selangor, Malaysia