Bout timers/interrupts

[narayana_20]

I want to make a program that will execute a function after 10 minutes. I mean along the process it will pause after ten minutes then execute a certain function. After execution it will resume the other process then count another 10 min. I tried using the delay(); and sleep(); function but it didnt worked. Is there any function that would be this possible?


ex

#include <stdio.h>
main()
{
clrscr();
/ * start counting for 10 minutes then execute a certain fxn*/
/* resume where it stopped */


}

[transcendental]

IIRC, sleep() is in milliseconds, so 10 minutes would be sleep(600000);

If the problem isn't this, please state the problem clearly instead of saying "it didnt worked."

[Jop]

You could also use the GetTickCount api.. this example pauses for 10 seconds and then quits:

#include <windows.h>

int main(){

DWORD start = GetTickCount();
	for(;;)
		if((GetTickCount() - start) > 10000)
			break;
	return 1;
}

Alternativly you could use the time functions or as said above, the sleep function...

[parksie]

That code will just go round and round and round at 100% CPU.

Under Windows, calling Sleep(0) will tell the scheduler you don't want any more of your time-slice, hence you can get away with:

#include <windows.h>

int main() {
    DWORD start = GetTickCount();

    for(;;) {
        if((GetTickCount() - start) > 10000)
            break;

        Sleep(0);
    }

    return 0; // return 0 for normal exit, 1 is an error condition
}

[Jop]

Thanks for correcting me mike, didn't know about the sleep(0) thing.. ah and also, I always mix up return 1 and return 0 this was the last time hehe (nullrmal )

[narayana_20]

Thanks guys! Ill try this one... I'll keep in touch...

[CornedBee]

If you're already using Sleep, why not simply sleep for 8000 ticks and then enter a fast loop? This way you don't even start CPU shifts.