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GitHub Repository: att/ast
 Path: blob/master/src/lib/libcs/csnote.c
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/***********************************************************************

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*                                                                      *

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*               This software is part of the ast package               *

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*          Copyright (c) 1990-2011 AT&T Intellectual Property          *

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*                      and is licensed under the                       *

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*                 Eclipse Public License, Version 1.0                  *

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*                    by AT&T Intellectual Property                     *

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*                                                                      *

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*                A copy of the License is available at                 *

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*          http://www.eclipse.org/org/documents/epl-v10.html           *

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*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *

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*                                                                      *

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*              Information and Software Systems Research               *

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*                            AT&T Research                             *

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*                           Florham Park NJ                            *

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*                                                                      *

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*                 Glenn Fowler <[email protected]>                  *

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*                                                                      *

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***********************************************************************/

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#pragma prototyped

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/*

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 * Glenn Fowler

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 * AT&T Research

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 *

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 * note host status change for name

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 * this is the daemon side of csstat()

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 *

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 * NOTE: name must already exist and pwd must be CS_STAT_DIR

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 */

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#include "cslib.h"

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/*

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 * encode 4 byte int into 2 bytes

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 */

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static unsigned short

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encode(register unsigned long n)

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{

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	register int	e;

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	e = 0;

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	while (n > 03777)

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	{

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		n >>= 1;

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		e++;

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	}

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	return n | (e << 11);

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}

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int

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csnote(register Cs_t* state, const char* name, register Csstat_t* sp)

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{

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	unsigned long	idle;

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	long		up;

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	if (sp->up < 0)

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	{

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		idle = -sp->up;

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		up = 0;

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	}

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	else

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	{

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		idle = sp->idle;

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		up = sp->up;

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	}

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#if 0

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	{

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		unsigned long	a;

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		unsigned long	m;

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		a = (encode(up) << 16) | encode(idle);

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		m = (((sp->load >> 3) & 0377) << 24) | ((sp->pctsys & 0377) << 16) | ((sp->pctusr & 0377) << 8) | (sp->users & 0377);

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		error(-1, "csnote: <%lu,%lu> load=%lu:%lu pctsys=%lu:%lu pctusr=%lu:%lu users=%lu:%lu idle=%lu:%lu", sp->load, ((m >> 24) & 0xff) << 3, sp->pctsys, (m >> 16) & 0xff, sp->pctusr, (m >> 8) & 0xff, sp->users, m & 0xff, sp->idle, sp->users ? ((a & 0x7ff) << ((a >> 11) & 0x1f)) : ~0, a, m);

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	}

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#endif

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	return touch(name, (encode(up) << 16) | encode(idle), (((sp->load >> 3) & 0377) << 24) | ((sp->pctsys & 0377) << 16) | ((sp->pctusr & 0377) << 8) | (sp->users & 0377), -1);

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}

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int

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_cs_note(const char* name, Csstat_t* sp)

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{

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	return csnote(&cs, name, sp);

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}

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