ulCriticalNesting

Kernel
1

johnalfredo wrote on Thursday, May 28, 2009:

Hi,

What does

    ( void ) ulCriticalNesting;

do?  It is at the bottom of the portSAVE_CONTEXT macro for ARM7_LPC2000, where at the top of the macro I see

    extern volatile unsigned portLONG ulCriticalNesting;

Thanks in advance,

John Alfredo

2

rtel wrote on Thursday, May 28, 2009:

I have not checked the code, but if its where I think it is then it is just to prevent the compiler generating a warning about an unused parameter.  The parameter is in fact used, but only from inline asm where the compiler does not see it.

Regards.