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

Text File | 1989-08-01 | 6.1 KB | 342 lines

head     1.7;
branch   ;
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locks    ; strict;
comment  @ * @;


1.7
date     89.07.31.17.51.57;  author douglis;  state Exp;
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next     1.6;

1.6
date     89.07.13.23.24.40;  author douglis;  state Exp;
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next     1.5;

1.5
date     89.05.04.15.49.00;  author douglis;  state Exp;
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next     1.4;

1.4
date     89.03.17.12.42.02;  author douglis;  state Exp;
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next     1.3;

1.3
date     88.11.19.15.53.06;  author douglis;  state Exp;
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next     1.2;

1.2
date     88.11.14.13.28.22;  author douglis;  state Exp;
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next     1.1;

1.1
date     88.09.04.22.37.23;  author douglis;  state Exp;
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next     ;


desc
@declarations internal to the loadavg program.
@


1.7
log
@single '.')
>> use the kernel idle time by default, but changes to support statting
if only it would work without requiring exclusive access
@
text
@/*
 * loadAvg.h --
 *
 *    Declarations internal to the loadavg program.
 *
 * Copyright 1987 Regents of the University of California
 * All rights reserved.
 *
 *
 * $Header: /a/newcmds/loadavg/RCS/loadavg.h,v 1.6 89/07/13 23:24:40 douglis Exp Locker: douglis $ SPRITE (Berkeley)
 */

#ifndef _LOADAVG
#define _LOADAVG

#include <time.h>
#include <db.h>
#include <mig.h>
#include <stdio.h>
#include <stdlib.h>

#include <proc.h>
#include <kernel/net.h>

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

/*
 * Arbitrary value larger than the load average on any node (we hope!)
 */
#define MAX_LOAD 1000.0

/*
 * Buffer lengths.
 */
#define HOST_NAME_SIZE 64
#define MAX_PATH_NAME_LENGTH 1024


/*
 * 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.
 */

/*
 * 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[MIG_NUM_LOAD_VALUES];
    double    max[MIG_NUM_LOAD_VALUES];
} Thresholds;

typedef enum {
    EVICT,
    CHECK_COUNT
} FindForeignParam;

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

extern int debug;
extern int verbose;
extern int loadInterval;
extern int writeInterval;
extern int timeOut;
extern int neverAccept;
extern int alwaysAccept;
extern int migVersion;
extern int numLowPris;
extern int useKernelIdleTime;
extern char *dataFile;
extern char *weightString;
extern double weights[];
extern Thresholds thresholds;

extern int errno;

extern int hostID;
extern char *myName;
extern char hostname[];
extern char *machType;
extern int kernelState;
#ifdef INTERIM
extern int oldKernel;
#endif /* INTERIM */

/*
 * Procedures.
 */

extern void RunDaemon();
extern int FindForeign();

extern char *malloc();
extern char *strcpy();
extern char *strerror();
#endif _LOADAVG

@


1.6
log
@Don't charge low priority processes against the load average when deciding whether to accept migrations
@
text
@d10 1
a10 1
 * $Header: /a/newcmds/loadavg/RCS/loadavg.h,v 1.5 89/05/04 15:49:00 douglis Exp Locker: douglis $ SPRITE (Berkeley)
d84 1
@


1.5
log
@changed to use the kernel state variable for import/export permissions.
@
text
@d1 1
a1 1
    /*
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 * $Header: /a/newcmds/loadavg/RCS/loadavg.h,v 1.4 89/03/17 12:42:02 douglis Exp Locker: douglis $ SPRITE (Berkeley)
d83 1
@


1.4
log
@added decl. for strerror.
@
text
@d10 1
a10 1
 * $Header: /a/newcmds/loadavg/RCS/loadavg.h,v 1.3 88/11/19 15:53:06 douglis Exp Locker: douglis $ SPRITE (Berkeley)
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extern int forkChild;
d94 4
@


1.3
log
@got rid of some obsolete declarations and converted some more over
to use constants from mig.h.
@
text
@d10 1
a10 1
 * $Header: /a/newcmds/loadavg/RCS/loadavg.h,v 1.2 88/11/14 13:28:22 douglis Exp Locker: douglis $ SPRITE (Berkeley)
d105 1
@


1.2
log
@converted to new library, mostly.
@
text
@d1 1
a1 1
/*
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 * $Header: loadavg.h,v 1.1 88/09/04 22:37:23 douglis Exp $ SPRITE (Berkeley)
d23 1
a25 22
 * 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

/*
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 * Arbitrary value larger than the load average on any node
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    double    min[LOAD_NUM_VALUES];
    double    max[LOAD_NUM_VALUES];
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a83 1
extern int lockFile;
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a101 2
extern void RunServer();
extern ReturnStatus OpenCreate();
@


1.1
log
@Initial revision
@
text
@d4 1
a4 1
 *    Declarations internal to the loadAvg program.
d10 1
a10 1
 * $Header: loadAvg.h,v 2.7 88/05/15 21:01:24 douglis Exp $ SPRITE (Berkeley)
d16 5
a20 10
#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"
d22 2
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 * 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

/*
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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;

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extern Boolean debug;
extern Boolean verbose;
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extern Boolean forkChild;
extern Boolean lockFile;
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extern int archType;
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@