Thread: non maskable global/local variables

Hello Everyone

Please bear with me if this sounds a bit silly.
I would like to know if there is a way(piece of code/snippet in C) by which
at any time during a program execution by pressing a specific key i can jump to a specific location/line in the program.

It is like the non-maskable highest priority interrupt concept(all you embedded guys may know this),where in at any given time if a non-maskable interrupt occurs,the micro-controller leaves/abandons what ever its doing and first does what ever is writen in the ISR(interrupt service routine) and then goes back to pick up where it left of.

I can provide an example if i am not clear to you guys.

Thanks in advance
Arun

I would like to know if there is a way(piece of code/snippet in C) by which at any time during a program execution by pressing a specific key i can jump to a specific location/line in the program.

O_o

That is an extremely bad idea.

Even if you use everything correctly, such as handling all the signals properly without violating the "async" rule, you may wind up with a broken stack depending on the users environment.

I find it unlikely you event want to do such a thing. If you jump out of the signal handler, execution will not naturally return to the code at the point "interrupted".

If you only want to execute arbitrary code, as opposed to "safe for signal handlers", you should pretty much do this through an event system. Register that a signal was triggered, somehow, so that you may process the fact that you received a signal however you like.

Soma