Category : Alternate Operating Systems - Quarterdeck DesqView, CP/M, etc
Archive   : PCCAPP.ZIP
Filename : PERIODIC.H

/*
* This file is part of the Choices Operating System
* Developed by: The TAPESTRY Parallel Computing Laboratory
* University of Illinois at Urbana-Champaign
* Department of Computer Science
* 1304 W. Springfield Ave.
* Urbana, IL 61801
*
* Copyright (c) 1987, 1988, 1989, 1990, 1991, 1992
* The University of Illinois Board of Trustees.
* All Rights Reserved.
*
* Author: Gary M. Johnston ([email protected])
* Contributing Author: Douglas E. Leyens ([email protected])
* Contributing Author: David Dykstra ([email protected])
* Project Manager and Principal Investigator: Roy Campbell ([email protected])
*
* Funded by: NSF TAPESTRY Grant No. 1-5-30035, NASA ICLASS Grant
* No. 1-5-25469 and No. NSG1471 and AT&T Metronet Grant No. 1-5-37411.
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for educational, research, and non-profit purposes
* is hereby granted provided that the above copyright notice, the
* original authors names, and this permission notice appear in all such
* copies and supporting documentation; that no charge be made for such
* copies; and that the name of the University of Illinois not be used
* in advertising or publicity pertaining to distribution of the
* software without specific prior written permission. Any entity
* desiring permission to incorporate this software into commercial
* products should contact the Computing Research Laboratory, Department
* of Computer Science, University of Illinois, 1304 W. Springfield
* Avenue, Urbana, IL 61801. The University of Illinois makes no
* representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*/
/*
* PeriodicTimer.h - global Periodic timer.
*/

#ifndef PeriodicTimer_h
#define PeriodicTimer_h
#ifdef __GNUG__
#pragma once
#pragma interface
#endif

/* #define PERIODICTIMERDEBUG */

#ifdef PERIODICTIMERDEBUG
#define STATISTICS
#endif

#include "Timer.h" /* parent class */


#include "LOCK.h" /* to get the LOCK define */
/* class LOCK; */

#include "ClassStar.h"
#include "SemaphoreStar.h"

class Statistics;

extern ClassStar PeriodicTimerClass;
class PeriodicTimer : public Timer {
protected:
/*
* This is the per-instance data
*/
SemaphoreStar periodicSemaphore; /* semaphore to V when expires */
char running; /* timer running flag */
int maxCount; /* number of ticks in period */
int count;
PeriodicTimer *nextDifferent; /* single link for different counts */
PeriodicTimer *nextSame; /* single link for same counts */

/*
* Now for the class data and functions
*/
static LOCK *lock; /* lock to protect lists */
static PeriodicTimer *first; /* pointer to first timer */

static Statistics *stat;

#ifdef PERIODICTIMERDEBUG
public:
static void dump();
#endif

public:
static void initialize();

static int perTickBookKeeping();
static void expiryProcessing();

/*
* Now back to regular public functions
*/

proxiable PeriodicTimer();
proxiable ~PeriodicTimer();

proxiable unsigned int start( unsigned int microseconds );
proxiable unsigned int stop();
proxiable unsigned int residual();
proxiable void await();

Class *classOf();
};


#endif /* PeriodicTimer_h */
/*
* This file is part of the Choices Operating System
* Developed by: The TAPESTRY Parallel Computing Laboratory
* University of Illinois at Urbana-Champaign
* Department of Computer Science
* 1304 W. Springfield Ave.
* Urbana, IL 61801
*
* Copyright (c) 1987, 1988, 1989, 1990, 1991, 1992
* The University of Illinois Board of Trustees.
* All Rights Reserved.
*
* Author: Systems Research Group ([email protected])
* Project Manager and Principal Investigator: Roy Campbell ([email protected])
*
* Funded by: NSF TAPESTRY Grant No. 1-5-30035, NASA ICLASS Grant
* No. 1-5-25469 and No. NSG1471 and AT&T Metronet Grant No. 1-5-37411.
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for educational, research, and non-profit purposes
* is hereby granted provided that the above copyright notice, the
* original authors names, and this permission notice appear in all such
* copies and supporting documentation; that no charge be made for such
* copies; and that the name of the University of Illinois not be used
* in advertising or publicity pertaining to distribution of the
* software without specific prior written permission. Any entity
* desiring permission to incorporate this software into commercial
* products should contact the Computing Research Laboratory, Department
* of Computer Science, University of Illinois, 1304 W. Springfield
* Avenue, Urbana, IL 61801. The University of Illinois makes no
* representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*/
/* This file was generated by Proxify++ version 0.1 */

#ifndef PeriodicTimer_h
#define PeriodicTimer_h
#ifdef __GNUG__
#pragma once
#pragma interface
#endif
#include "Timer.h"
#include "LOCK.h"
#include "ClassStar.h"
#include "SemaphoreStar.h"
class Statistics;
extern ClassStar PeriodicTimerClass;
class PeriodicTimer : public Timer {
public:
proxiable PeriodicTimer();
proxiable virtual ~PeriodicTimer();
proxiable virtual unsigned int start(unsigned int microseconds);
proxiable virtual unsigned int stop();
proxiable virtual unsigned int residual();
proxiable virtual void await();
};
#include "VersionInstaller.h"
REQUIREDVERSION( PeriodicTimer );
#endif PeriodicTimer_h