Sprite 1984 - 1993/Sprite 1984 - 1993.iso/src/cmds/loadavg/RCS/loadAvg.h,v

Text File | 1988-05-16 | 5.8 KB | 320 lines

head     2.7;
access   ;
symbols  ;
locks    ; strict;
comment  @ * @;


2.7
date     88.05.15.21.01.24;  author douglis;  state Exp;
branches ;
next     2.6;

2.6
date     88.04.07.10.30.46;  author douglis;  state Exp;
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next     2.5;

2.5
date     88.03.17.22.43.04;  author douglis;  state Exp;
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next     2.4;

2.4
date     88.02.21.15.55.03;  author douglis;  state Exp;
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2.3
date     87.11.20.12.41.29;  author douglis;  state Exp;
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2.2
date     87.03.15.21.33.50;  author douglis;  state Exp;
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2.1
date     87.03.11.18.12.46;  author douglis;  state Exp;
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next     2.0;

2.0
date     87.03.11.12.39.57;  author douglis;  state Exp;
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desc
@Declarations internal to the loadAvg program.
@


2.7
log
@changed to use the hostInfo C library routines and structures.
@
text
@/*
 * loadAvg.h --
 *
 *    Declarations internal to the loadAvg program.
 *
 * Copyright 1987 Regents of the University of California
 * All rights reserved.
 *
 *
 * $Header: loadAvg.h,v 2.6 88/04/07 10:30:46 douglis Exp $ SPRITE (Berkeley)
 */

#ifndef _LOADAVG
#define _LOADAVG

#include "sprite.h"
#include "status.h"
#include "io.h"
#include "mem.h"
#include "fs.h"
#include "proc.h"
#include "time.h"
#include "byte.h"
#include "dataBase.h"
#include "hostInfo.h"

/*
 * Define pseudo-RPC protocol for named pipes.
 *
 *    LA_RPC_UPDATE        - update load statistics for a node
 *    LA_RPC_IDLE        - get an idle node
 *    LA_RPC_ALLINFO        - output statistics for all nodes
 */

#define LA_RPC_UPDATE 0
#define LA_RPC_IDLE 1
#define LA_RPC_ALL_INFO 2

#define LOAD_NUM_VALUES 3

/*
 * Define constants related to Sprite system characteristics and defaults.
 */

#define STANDARD_OUTPUT 1
#define OPEN_MODE 0664
#define MAX_NUM_HOSTS 256

/*
 * A record contains "%2d %3d %10d %10d %3.0f %3.0f %3.0f %5.2f %5.2f %5.2f\n",
 * plus a null byte.  (This amounts to 54 bytes.)  Make it the next
 * power of 2.
 *
 * Note that after this is debugged, this can be changed to write in binary
 * form rather than converting to ASCII.
 */

#define UTIL_RECORD_SIZE 64

/*
 * Subscripts into the queueThreshold array.
 */
#define MIN_THRESHOLD 0
#define MAX_THRESHOLD 1

/*
 * Arbitrary value larger than the load average on any node
 */
#define MAX_LOAD 1000.0


/*
 * For each machine, keep track of the timestamp for its information and the
 * different load averages reported.   Also, the architecture type
 * (e.g., sun2/sun3/spur) is stored to make sure we can migrate to a machine
 * of the same type.
 */

typedef struct {
    int        hostID;
    int        archType;
    int        utils[LOAD_NUM_VALUES];
    double    lengths[LOAD_NUM_VALUES];
    int     bootTime;
    int     timestamp;
    int     noInput;
    Boolean    allowMigration;
} NodeInfo;

/*
 * If we are not allowing foreign processes, but our time since last input
 * is greater than noInput and our average queue lengths are ALL less than
 * the corresponding values in min, start accepting foreign processes.
 *
 * If we are allowing foreign processes and either the idle time drops
 * or ANY of the average queue lengths exceeds its corresponding value in max,
 * stop accepting them.
 */

typedef struct {
    int        noInput;
    double    min[LOAD_NUM_VALUES];
    double    max[LOAD_NUM_VALUES];
} Thresholds;

/*
 * Global variables.  (Options, plus other global vars initialized at startup.)
 */

extern Boolean debug;
extern Boolean verbose;
extern int loadInterval;
extern int writeInterval;
extern int timeOut;
extern Boolean forkChild;
extern Boolean lockFile;
extern char *dataFile;
extern char *weightString;
extern double weights[];
extern Thresholds thresholds;

extern int hostID;
extern int archType;
extern char *myName;

/*
 * Procedures.
 */

extern void RunDaemon();
extern void RunServer();
extern ReturnStatus OpenCreate();

#endif _LOADAVG
@


2.6
log
@Removed references to "server" and using pipes, since that's obsolete.
@
text
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 * $Header: loadAvg.h,v 2.5 88/03/17 22:43:04 douglis Exp $ SPRITE (Berkeley)
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@


2.5
log
@Added byte.h to include list.
@
text
@d10 1
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 * $Header: loadAvg.h,v 2.4 88/02/21 15:55:03 douglis Exp $ SPRITE (Berkeley)
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extern Boolean useDataFile;
extern Boolean usePipes;
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extern char *pipeDir;
extern char *requestFile;
extern char *responseFile;
@


2.4
log
@just added myName global variable.
@
text
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 * $Header: loadAvg.h,v 2.3 87/11/20 12:41:29 douglis Exp $ SPRITE (Berkeley)
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@


2.3
log
@Store the boottime and architecture type in the global file.
@
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 * $Header: loadAvg.h,v 2.2 87/03/15 21:33:50 douglis Exp $ SPRITE (Berkeley)
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@


2.2
log
@Combined thresholds into a single structure.  Added getting random node.
@
text
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 * $Header: loadAvg.h,v 2.1 87/03/11 18:12:46 douglis Exp $ SPRITE (Berkeley)
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 * different load averages reported.
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@


2.1
log
@Keep track of whether to migrate processes based on load average
and keyboard/mouse idle time.
@
text
@d10 1
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 * $Header: proto.h,v 1.7 87/01/04 17:28:51 andrew Exp $ SPRITE (Berkeley)
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/*
 * Define constants specific to load average statistics.
 */

#define LOAD_INTERVAL 5
#define WRITE_INTERVAL (60 * LOAD_INTERVAL)
#define WEIGHT1 (double) 0.9200444146293232     /* exp(-1/12) */
#define WEIGHT2 (double) 0.9834714538216174     /* exp(-1/60) */
#define WEIGHT3 (double) 0.9944598480048967     /* exp(-1/180) */
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extern int inputThreshold;
extern double queueThreshold[];
@


2.0
log
@Initial revision.
@
text
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#ifndef lint
static char rcsid[] = "$Header: loadAvg.c,v 1.8 87/03/11 11:09:50 douglis Exp $ SPRITE (Berkeley)";
#endif not lint

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#define WRITE_INTERVAL (1 * LOAD_INTERVAL)
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    int            utils[LOAD_NUM_VALUES];
    double        lengths[LOAD_NUM_VALUES];
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extern Boolean writeToStdOut;
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@