Timer application in linux

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12-29-2011

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Timer application in linux

Hello everyone,
It is good to be here.
I am a newbie to Linux.Can anyone help me in designing a timer application.
The timer has to start.And after certain time interval the program should call a function continuously.It should not be in sleep mode.During the course of that time interval the program should execute the rest of the functions or statements.

Plz help me in doing so...thanx in advance

Harry443

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LEARN ABOUT DEBIAN

sdl::time

pods::SDL::Time(3pm)					User Contributed Perl Documentation				      pods::SDL::Time(3pm)

NAME

       SDL::Time - An SDL Perl extension for managing timers

CATEGORY

       Core

SYNOPSIS

	use warnings;
	use strict;

	use threads;
	use threads::shared;

	use SDL::Time;

	package foo;

	use SDL ':all';

	SDL::init(SDL_INIT_TIMER);

	my $tick :shared = 0;
	sub ticker { $tick++; warn $tick; return 100; }

	package main;

	my $id = SDL::Time::add_timer(100, 'foo::ticker');

	sleep(2);

	SDL::Time::remove_timer($id);

METHODS

   add_timer
	my $id = SDL::Timer::add_timer( $ms_interval, $callback );

       This runs in a separate thread and a cloned Perl thread.  "threads" and "threads::shared" must be used to share any variables the timer
       uses.

       The $callback function, specified with a string of the function's name, will be called after the milliseconds of $interval have elapsed.
       The actual delay may be longer than specified depending on the underlying OS.  The callback function is passed the current timer interval
       as well as the $interval parameter and should return the next timer interval.  If the return value from the callback is 0, the timer is
       cancelled; otherwise, the timer will continue to run.

       The timer callback function may run in a different thread to your main program, so it shouldn't call any functions from within itself.  You
       may call SDL::push_event, however.

       "SDL::Time::add_timer" returns the identifier value of the generated timer or undef on error.

       Note: You must initialize ("SDL::init") the timer subsystem to use this function.

   remove_timer
	SDL::Timer::remove_timer( $id );

       The other way to cancel a timer is to use "SDL::Time::remove_timer" on the $id of a timer.  This ID is the return value of the
       "SDL::Time::add_timer" function.

       "SDL::Time::remove_timer" returns 0 on success or "-1" on error.

AUTHORS

       See "AUTHORS" in SDL.

perl v5.14.2							    2012-05-28						      pods::SDL::Time(3pm)

UNIX and Linux Applications