THe 'signal' function question

Hi,

I hav a question about the 'signal' function in the signal handling library. say i've got

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signal( SIGINT, signal_handler );

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But if the signal_handler function has a parameter. Like a prototype below

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void signal_handler( int signalValue );

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What will signalValue be if i report the signal using 'raise()' ?
What will be passed to the signal handling function?

thnx

it will return 0 if the raise was successfull, otherwise it will return 1 or -1.

and the other question is out of my understanding. Sorry about it

You havn'et answered my question yet. I only asked one.

thnx, anybody else?

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Originally posted by Nutshell
What will signalValue be if i report the signal using 'raise()' ?
What will be passed to the signal handling function?

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The numeric value of the signal raised. For example SIGINT == 2 and SIGKILL == 9. You can get a complete listing in the header file /usr/include/signal.h

Whatever the value of the SIGINT is. Assuming, of course, that you call raise() like this:

raise(SIGINT);

The numeric value of SIGINT is implementation-defined so it needn't be the same on all systems. The only requirements are that it be a positive number. A common value is 2.

yep thnx