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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xtappaddtimeout

XtAppAddTimeOut()														 XtAppAddTimeOut()

XtAppAddTimeOut - register a procedure to be called when a specified time elapses.

Synopsis
  XtIntervalId XtAppAddTimeOut(app_context, interval, proc, client_data)
	 XtAppContext app_context;
	 unsigned long interval;
	 XtTimerCallbackProc proc;
	 XtPointer client_data;

Inputs
  app_context
	    Specifies the application context in which the timer is to be set.

  interval  Specifies the time interval in milliseconds.

  proc	    Specifies the procedure that is to be called when the time expires.  See XtTimerCallbackProc(2).

  client_data
	    Specifies data to be passed to proc when it is called.

Returns
  A handle of type XtIntervalId that can be used to unregister the timeout procedure with XtRemoveTimeOut().

Description
  XtAppAddTimeOut()  registers, in application context app_context, a procedure proc, to be called by XtAppNextEvent() with client_data after
  interval milliseconds elapse.  The procedure is called once and automatically unregistered; it will not be called repeatedly every interval
  milliseconds.

  See XtTimerCallbackProc(2) for an explanation of how to write a timer callback.

Usage
  Timer  callbacks  are  automatically unregistered after they are triggered.  To have a callback called at a regular interval, call XtAppAd-
  dTimeOut() again from within the timer callback.

  A timer callback can be explicitly unregistered before it is invoked by calling XtRemoveTimeOut() with the XtIntervalId  returned  by  this
  function.

Structures
  The XtIntervalId type is defined as follows:

     typedef unsigned long XtIntervalId;

See Also
  XtAppNextEvent(1), XtRemoveTimeOut(1),
  XtTimerCallbackProc(2).

Xt - Event Handling														 XtAppAddTimeOut()

UNIX and Linux Applications