Re: triggering an event every 5 minutes in C

From: Pascal Bourguignon (spam_at_mouse-potato.com)
Date: 03/16/05 

Date: 16 Mar 2005 04:22:45 +0100

Jon Zero <jzero@nospam.net> writes:

> I am trying to figure out what the best way to have my program do
> something (change the value of a variable) every x number of minutes. Can
> somebody give me a pointer in the right direction? I am writing in C in
> a linux environment.

Read David's answer.

In most cases something like could work, but be sure to read the man
pages of signal(2) and alarm(2):

    int variable=0;

    int change_variable(int signal){
        variable++;
        alarm(300); }

    int main(){
        signal(SIGALRM,change_variable);
        alarm(300);
        int last=-1;
        while(1){
            if(last!=variable){
                last=variable;
                printf("%d\n",variable); }}} 

-- 
__Pascal Bourguignon__                     http://www.informatimago.com/
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