RE: [lwip-users] Using MEM_LIBC_MALLOC == 1 in an OS

[FreeRTOS.org Info]

> -----Original Message-----
> From: address@hidden 
> [mailto:address@hidden On 
> Behalf Of Edward Harris
> Sent: 26 February 2009 10:03
> To: Mailing list for lwIP users
> Subject: [lwip-users] Using MEM_LIBC_MALLOC == 1 in an OS
> 
> Hello all.
> 
> I have just spotted a possible issue in the LwIP port that I 
> am working with under an OS (FreeRTOS).
> 
> The issue is that I have set MEM_LIBC_MALLOC = 1, to use the 
> standard C
> malloc() and free(), however as I'm using an OS, should I redirect the
> mem_xxx() macros to the OS protected versions?
> 
> Also, can someone clarify the use of SYS_LIGHTWEIGHT_PROT, 
> should I have it set to 1?
> 


This does not answer the question directly, but in FreeRTOS if you include
heap_3.c in your project then the FreeRTOS heap calls just use the standard
malloc too - but protected by a critical region (actually a scheduler lock
so interrupts remain enabled).  It would then seem to make sense for the
lwIP calls to use the same functions.

Regards,
Richard.

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