hi,
#include<signal.h>
#include<stdio.h>
void handler();
int alarmflag=0;
{
signal(14,handler);
alarm(3);
while(!alarmflag)
{
pause();
printf("signal received\n");
}
printf("loop ends");
}
void handler()
{
printf("an alarm signal was received\n");
alarmflag=1;
}
here, what is alarm? what is the function handler, it
is a new process or not? when it will be run. please tell me
thank you very much.
Code:ss
Jack
Alarms are used in conjunction with signals to determine if an event has occured or not.
If a signal triggers an event then it updates the alarmflag variable and the function alarm is used for this purpose i guess.
Based on the alarmflag value set your program could take the appropriate action required.
Hope this sufficies.
is the function handler a process?
when it will be run ?
Jack
